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ZyXEL U-336R/RE User's Manual

1. 34 CONNECT 41600 je 35 CONNECT 31200 j je p 36 CONNECT 24960 37 _ CONNECT 20800 je 38 __ CONNECT 33600 j je fs p 39 CONNECT 28800 j je p 40 CONNECT 26400 e esy 41 CONNECT 24000 je 2 CONNECT 21600 fe e fe e le s Use 42 6 to disable RINGING result code When more than one type of Distinctive Ring is turned on S40b3 6 RING n will be reported n Ring Type 1 4 Result Code Chart Symbol Reference Supported Reports the DTE Speed as lt cr gt lt lf gt CONNECT DTE_Speed lt cr gt lt lf gt CONNECT DTE_Speed Protocol 112 Status Registers amp Result Codes 14400 V 42bis lt cr gt lt If gt CONNECT DCE_Speed Error_Code lt cr gt lt lf gt Example CONNECT 14400 ARQ CONNECT DCE _Speed Error_Code Error_Control Example CONNECT 14400 ARQ MNP5 f Data compression included SREJ is appended if a V 42 connection with selective reject is established DCE_Speed Error_Control Example CONNECT 38400 V 32bis Result Code Field Descriptions Field Name Possible Values NONE ARQ Error_Control LAPM V42 This field will not show if no error control is negotiated V42b DCE_Speed All possible DCE speeds supported DTE_Speed All possible DTE speeds supported Connect Strings for Error Corrected Connections To enable the following numerical
2. EDR detection either CNG or DTMF tones will be disabled once detection occurs However a customer s program might not answer because the setting of the software may require multiple rings to answer S51 bits 0 1 control the number of rings that the modem will report once the CNG or DTMF tone is detected The timing relationship between the Caller ID if enabled EDR and ring detection is as follows ringl ring2 ring3 3sec 3s 3s 3s S7 time out CID EDR RD EDR RD EDR RD EDR RD CID Caller ID task RD Ring Detection task EDR EDR task NOTE DURING THE EDR PERIOD ANY AT COMMAND WILL DISABLE THE EDR FUNCTION EDR Application Example If we use ZFAX as our fax receiving application and we don t want it to answer the call unless it is a fax call the way to set it up would be 1 Set ZFAX to answer on 2 rings 2 Set 51 0 1 to enable EDR and report RING twice The modem will not report a normal RING and ZFAX will not answer a call unless EDR RING is reported 3 Set 51 4 1 to enable fax CNG tone detection It is reported as RING 50 Special Functions 4 Set 51 2 1 to enable DTMF tone detection It is reported as RING If the remote fax machine does not generate the CNG tone ask a fax caller through your answering machine message to press or any other DTMF key if he or she wants to send a fax Save the settings in a profile and reset the modem with A
3. This chapter describes special features of the U 336R RE and offers instructions on how each is used Security Functions Your modem provides security that prevents unauthorized users from making connections Two types of security functions are provided e Type 1 security is used when the remote modem is also a ZyXEL modem e Type 2 security is used when the remote modem is any other brand The type 1 connection the dial in remote modem will send in its supervisor password for checking at the initial connection and the local modem will check this password against its pre stored acceptable password list The type 2 connection the remote terminal will be prompted to enter the password at the initial connection and the local modem will do the password checking Levels of Security Two levels of security are provided Special Functions 39 e With level 1 security the local modem will maintain the connection if the password is OK otherwise the line disconnected e With level 2 security redial the phone number corresponding to the dial in password The line simply disconnects if the password does not match User Passwords Fifty user passwords may be defined The corresponding 50 dial back numbers are the modem s 50 stored phone numbers Any character ASCII 0 127 can be used in the password the maximum password length is 8 characters Security functions are only accessible through AT commands in terminal mode
4. i Enable type 2 and level 2 security with password check and callback remote site enters the callback number BEFORE THE SECURITY TYPE OR LEVEL CAN BE CHANGED THE MODEM REQUIRES THE SUPERVISOR PASSWORD For type 2 security the remote site will be prompted to enter the user password A maximum of 3 tries in 40 seconds is allowed If a correct password is not entered within this time limit the line will be disconnected If the remote site is to enter the callback number it will be prompted to do so Special Functions 41 Remote Configuration Remote configuration for your modem is provided as a profile by profile batch mode When on line the remote modem s current configuration or one of its profiles can be read into one of the local modem s user profiles This profile is modified locally and the line can be disconnected during this time Local profile modification is done by loading this profile as the active settings and then modifying and saving the active settings back to the profile Then the connection is reestablished and the profile transmitted to the remote modem Reading a remote profile b into a local profile a is achieved with the command AT Rab Local user profile number Remote user profile number Remote factory default Return the modems to on line status again The local modem can upload write its profile to the remote modem s profile and have the remote modem reset from the new profile This
5. 5 f5 19200bps fe _ 16800bps_ J 7 f l4400bps J s fs 12000bps_ J 9 fo 9600 bps o d 10 fa 200bs J 11 fB f4800bps S 12 fC f2400bps o S 13 fD 1200bps J 14 JE 460800 bps 15 JF Boobs J 16 jio 307200 bps J 17 11 153600bps J 18 12 102400bps J 20 14 ol440bps J 21 fis 51200bps J 22 jie 624000bp s J 24 jis 124800bps Command bit dec hex Function and description Ref 96 Status Registers amp Result Codes o l 5 5 unction and description Ref 2400 bps 1600 bps 1200 bps 960 bps 0800 bps 21600 bps o S20 15 are supported by auto speed N e NIIAJ N BINININININ amp DSO G0 1 ON e Note Only the speeds u detection gz Bit mapped register Oooo Maintain non error control EO connection when modem error control handshake fails Drop connection when El modem error control handshake fails lt peaker always OFF peaker ON until carrier is 1 etected default peaker always ON Speaker ON after last digit is M3 dialed out until carrier detected DSR always ON According to CCITT see also 44 4 S41 5 CD always ON CD tracks presence of data carrier see also 38 3 CTS Follows RTS in RO synchronous mode Response delay set in 26 aN zZ Re amp 5 Status Registers amp Result Codes 97 Idec hex Function and description Ignore RTS CTS always ON in synchronous mo
6. Any access attempt will result in the modem s prompting the user to enter the supervisor password The attempt will be rejected if the entered password is not correct The default supervisor password is ZyXEL when the modem is shipped from the factory This supervisor password is also the password sent for automatic password checking in a type connection To modify the supervisor password use AT HS You will be asked for the original password and a new password and then to re enter the new password for verification For example Password Enter supervisor password KKKKKKKK Password Enter new supervisor password KKKKKKKK The command AT V will list the 50 user passwords and the supervisor password on the screen for viewing Again you will be prompted to enter the supervisor password first 40 Special Functions NOTE The following commands will enable different types and Verify Enter the new supervisor password again KOK KK KK OK The command AT Hn will modify the nth user password You will be prompted to enter the supervisor password first and then be prompted to enter the nth user password Levels of security Disable security function Enable type 1 and level 1 security with password check G2 Enable type 1 and level 2 security with password check and callback G5 Enable type 2 and level 1 security with password check Enable type 2 and level 2 security with password check and callback
7. Diagnostics amp Troubleshooting 119 FONOTE Dialing Indicator The V34 LED will flash on and off for 1 2 second intervals to indicate that the modem is dialing This flash will continue after dialing until a carrier is detected Therefore the V34 LED will also flash during leased line modem connections when one modem is trying to handshake but the other modem is not turned on Handshaking And Retrain Indicator The V34 LED will flash on and off for in 1 2 second intervals to indicate that the modem is handshaking or retraining Line Condition Status Display Regarding data being transmitted over telephone line circuits there are many kinds of line impairments that can affect the data being received by the remote modem Your modem can measure four major line impairments From the impairment readings you can understand the current line condition Your modem also logs line events over a long period so you know what the line condition has been We will describe these readings and logs as follows READINGS ARE ONLY AVAILABLE WHEN USING THE U 336R RE INSTALLED IN RS 1612 RACK SYSTEM THE READINGS DISPLAYED ARE NOT MEASUREMENTS AND SHOULD ONLY BE USED AS A REFERENCE Signal to Noise Ratio S N This reading is expressed in 1 dB resolution The higher the speed the higher the S N ratio required The modem measures the S N ratio by measuring the distance between the demodulated signal point and the ideal signal point For V 32 V 32bis
8. compatibl with amp K2 Flow control disabled e Hardware RTS CTS flow control Software XON XOFF flow control No response to poor signal quality Retrain action taken if signal quality Q1 is poor Adaptive rate auto fall back forward when signal quality changes quality is poor S elect V 22 for 1200 bps communication 100 Status Registers amp Result Codes Command bit dec hex Function and description Ref bps communication Eo e S29 0 49 0 31 Set default dial phone number pointer use AT amp Zn s to store phone numbers Peet eel Holds the ASCII decimal 255 value of the XON ee Sia Holds the ASCII decimal 255 value of the XOFF Bit mapped register 1 Disable aborting from terminal during modem handshaking ie Dn pressed modem will dial the S29 default number ae a er V 42 Default 64 40 Enable password protection WO to profile saving When AT amp WO is issued and profile 0 in the NVRAM has this bit set the supervisory Status Registers amp Result Codes 101 Command bit_ dec_ hex Function and description Ref _ password will be requested This bit in profile O also protects the supervisory password from a hardware reset 7 128 Enable extended numerical result codes from 50 71 when an error corrected connection is made Use with ATVO see result code table Bit mapped register 1 1 2 32 64 102 Status Registers amp
9. the modem measured S N ratio is generally about 2 dB higher than what is actually on the line because the modem rejects some of the out of band noise For V 22 22bis the difference can be as high as 8 dB because the modem only uses part of the 3 KHz bandwidth and rejects more than half of the voice band noise 120 Diagnostics amp Troubleshooting Received Signal Power Level RX This reading is expressed in 1 dBm resolution The modem measured receiving signal power is generally within 1 2 dBm of the actual value with relative accuracy The receiver sensitivity specification for your modem is 43 dBm Strong signal power could cause signal saturation in the channel and degrade the data validity To avoid this situation decrease the transmission power of the remote modem For increased line operability your modem s transmission power level on a leased line operation could be adjusted from 0 dBm to 27 dBm The default value is 11 dBm Phase Jitter PJ This reading is expressed in peak to peak degrees for phase jitter in the 20 to 300 Hz frequency range in degree resolution Frequency Offset FO Frequency offset is expressed in 1 Hz resolution It is the difference between the transmitted carrier frequency and the received carrier frequency Retrain Granted RG The count of the granting of the remote modem s retrain requests Each request is an indicator of bad receiving conditions Retrain Requested RT The count of th
10. 3421600 l 86 AT Command Set Summaries V34 19200 o d V34 16800 o S V34 14400 o d amp N69 V 3412000 amp N70_ V 349000 amp N71 V 347200 o o amp N72_ V 344800 o o ie 23 2 Function amp Description amp N73 V 34 2400 amp PO make break 39 61 amp P1 make break 33 67 Ea RTS Request To Send function 21 5 selection aa tracks RTS response delay is set in S26 ON RR ee ea ee a selection amp SO DSR overridden DSR always ON ef Pulse dial make break ratio 23 2 16 DSR according to CCITT ITU TSS See also 41 5 44 4 amp TO Een ical e a aoe test PP ae LDL test request from remote modem request from remote modem AT Command Set Summaries 87 Modem testing SS amp TO loge RDL test eT menapa s with self test RDL ST PS ash test ALB ST View profile settings amp VO _ View current active settings amp T6 amp T7 amp T8 amp VO amp Vn View the n 1 user profile settings n 1 4 amp V5 0 amp X1 amp X2 amp YO View factory default settings 3 amp v5 n Write current settings to user profile n in non volatile RAM See also S35 6 source selection amp X0 Modem provides synchronous transmit clock signal Internal clock to pin 15 of EIA 232D Terminal provides synchronous transmit clock signal External clock from pin 24 of EIA 232D Break handling Destru
11. Modem 4 Enclosed Equipment 4 Required Equipment 4 Becoming a Registered Owner 5 2 Installation 7 U 336R RE Modem Card 7 Required Steps for U 336R RE Installation 9 Installing the modem card 10 Connect to phone lines 10 Connect to Computers 11 Hooking Up Power 11 Fax Modem Communication Software Installation 11 3 Basic Modem Operation 15 Understanding AT Commands 15 Using the Windows 95 Hyper Terminal Program 15 Dialing and Answering Techniques 17 viii Dialing using the ATD Command 17 Auto Answer and Hook Controls 18 Making Your First Connection 18 Quick Tips when issuing AT Commands 19 Modem Result Codes 21 Viewing S Register Values 22 Changing S Register Values 22 Non Volatile Memory 23 Storing Phone Numbers 23 Dialing Stored Phone Numbers 23 Saving Settings and User Profiles 24 Helpful Hints for PC Computers 24 Default Modem Settings for PC s 25 ZyXEL Serial Parallel I O Card 25 Helpful Hints for Macintosh Computers 26 Special AT Command Settings for Macintosh 26 Macintosh Serial Port 26 Mac Software Tips 26 Helpful Hints for UNIX Based Computers 27 Serial Cable 27 Basic Modem Settings for UNIX 27 Unix Software Tips 28 4 Synchronous Mode Operation 29 V 25bis Command Set 29 Clock Options 30 RTS Options 31 Command State Options 32 Dialing from Synchronous Mode 32 Answering from Synchronous Mode 33 Auto Answer 33 Manual Answer 33 5 Leased Line Operation 35 Connecting to a Leased Line 35 Line Type Settin
12. Result Codes 000 Deny remote request for FO configuration Default Grant remote request for F configuration remote profile b to local profile a Security function control _ r Disable security function Default 1 a 20 Enable type 1 security with G1 password check ZyXEL to ZyXEL only all Enable type security with password check and call back ZyXEL to ZyXEL only Enable type 2 security with password check mE type 2 security with password check and call back 16 Enable type 2 security with password check and call back remote site enters the call back number Bit mapped register for remote configuration using panel menu control Remote profile number Wab 0 Local profile number Bit mapped register 000 Repeatedly dialing default number DCD ON OFF sequence follows UNIX standard DCD high before connect message is sent DCD off after last DCE response is AUO mode fax receiving disabled Disable MNPS5 Bit mapped register o k Answer in originating mode Class 2 Fax Bitfax compatibility FCON at 2400 next phase at 19200 4 16 10 Status Registers amp Result Codes 103 Command bit_ dec_ hex Function and description _ Ref FCON at current DTE shift to 19 200 when entering into the next phase Bit mapped register 000 No result code displayed in Q2 answer mode e ke Enables caller ID detection Enables type 1 ring de
13. T4 Bit mapped register Status Registers amp Result Codes 93 Function and description E b Deny Remote Digital Loop back test buffering Default synchronous data ia a i data buffering 0 1 o lo Even parity 1 fi Odd parity J No parity 1 stop bit 2 stop bits 4 3 o 0 10 bit character length __ CO_ 8 f8 1I bit character length f C1 ae after power on after power on Profile 2 as active settings after power on 94 Status Registers amp Result Codes 2 4 10 20 0 4 a o 8 m S16 S17 bit__ dec_ hex Function and description Ref a Oe ar after power on settings after power on o 0 _ No test in progress f amp To in process W ed test in process with self test in process a ae test in progress Bit mapped register 018 n x 018 4 1 0 1E Set leased line transmit P j E level from 0 to 15 W dBm See also S35b3 Default P9 0 Normal dial Default D Kae e ie answer mode 7 6 0 AT Commands set Default 10 accepted rate when answering 1 2E Enable baud rate to be fixed when answering Baud rate Status Registers amp Result Codes 95 o o Resor trere as S20 same amp Nn setting value as AT amp Nn command dec hex DTE speed bps Auto 003 detected from AT Command o 230400bps 1 fi 115200 bps Defaulty 2 2 6s0o0bps J 3 f s7600bps_ J fa 38400bps J
14. a special feature designed for single telephone line home use to receive fax or data calls without Special Functions 47 interfering with regular voice calls When most users install a fax modem at home they won t subscribe to an extra telephone line for occasional fax or data calls however fax data calls do come in from time to time If a user lets the fax data software application answer voice calls will be missed On the other hand if the user or an answering machine answers fax or data calls may either be missed or the person who answers the call has to go through some procedure to get this call connected to the proper application Either way is not desirable Once enabled with the proper settings EDR can 1 Detect the data fax CNG tone without physically answering the call After a CNG tone is detected the modem will report RING or RING n to the application software The software can cause the modem to answer the call 2 Detect several DTMF tones without physically answering the call The DTMF tones once detected by the modem will be reported as RING or RING n to the software application With these two functions your modem can be installed with an answering machine or voice telephone set at home In most cases the modem should not be set to answer regular rings nor to report them Thus the software will not instruct the modem to answer the call when the phone rings When a call comes in the answering machine wil
15. are bit aligned as received The last received bits of EOL patterns are byte aligned by the DCE with necessary zero fill bits inserted Refer to TIA PN 2388 for details FREV Request the DCE revision identification FSPL n n 0 I All other F commands are not supported but the modem will respond OK In many cases this means don t care See PN 2388 for command details n 1 5 g Class 2 Command Responses Value Function and Description FCFR FCIG string Report remote ID response CIG FCON FCSI string Report remote ID response CSI FDCS vr br Report session parameters response wd ln df ec bf s refer to FDCC command t Report session negotiation parameters d In df ec bf st response refer to FDCC command FDTC vr br Report remote capabilities response wd lIn df ec bf s refer to FDCC command Fax Operation 61 Response Value Function and Description errr FET n Post page message response refer to the FET n command FHNG n Call termination status response 00 Normal and proper end of connection n 10 Transmit error on phase A hang up code n 40 n 50 n 70 n 90 n 100 Report the non standard facilities command frame response FNSS HEX string Report the non standard setup frame response Receive page transfer status response refer to FPTS n command n 20 Transmit error on phase B hang up code Class 2 Flow Control Flow control is
16. computer handles image data creation capturing conversion compression decompression retrieval and storage Fax Operation 53 ITU T T 30 Fax Protocol The U 336R RE takes full control of the ITU T T 30 fax protocol also known as G3 fax handshaking signals and procedures Your modem initiates and terminates fax calls manages communications sessions and transports image data relieving the computer fax software of the T 30 protocol handling You modem allows for fax speeds up to 14400 bps when transmitting to a fax machine which complies with the V 17 fax standard Speeds will fall back to 12000 9600 or 7200 bps if poor line conditions are encountered When connecting to a G3 fax device your modem allows for fax speeds up to 9600 bps and will automatically fall back to 7200 4800 and 2400 bps if the line quality is poor Fax Command sets Your modem supports four command sets for fax operation e Class 1 command set e TIA PN 2388 Class 2 command set e TIA 592 Class 2 0 command set e ZyXEL Extended Fax AT command set Defining the Fax Command Sets The EIA Class 1 and Class 2 fax commands are a set of AT fax commands defined by EIA TIA Telecommunications Industry Association for controlling fax modems from a computer through the serial RS 232 interface All fax modems and fax software supporting this standard will be compatible with each other 54 Fax Operation FONOTE Class 1 commands control on line modem negotiat
17. detection allows you to use a single telephone line to handle both voice and data calls Asynchronous and synchronous modes for reliable serial data communication Fast retrain with automatic fall forward and fall back Your modem will automatically fall back to lower speeds when communicating with slower modems and when encountering unstable or variable line conditions Call back security and password protection restricts access to authorized callers only Caller ID identifies incoming calls before you answer you must subscribe to this service through your telephone company in order for your modem to identify callers Distinctive ring detects data fax and voice calls this feature requires communication software that supports distinctive ring such as ZFAX Remote configuration capability EDR extended Distinctive Ring Flash EPROM memory lets you easily upload new firmware providing you with easy access to new features ZyXEL exclusive Kernel Recovery Mode for no hassle recovery from failed flash uploads no factory repairs Fax Compatibility EIA Class 1 2 and 2 0 Fax commands ITU T V 17 G3 up to 14 400bps ITU T V 29 G3 up to 9 600bps ITU T V 27ter G3 up to 4 800bps ZyXEL Fax AT commands Technical Specifications Operating mode auto dial answer Flow control software XON XOFF or hardware CTS RTS Data Voice toggle switch Configuration settings software programmable with non volatile memor
18. necessary to match the DTE DCE data rate to the line signaling rate while transmitting or receiving Group 3 T 4 data In Class 2 fax mode both hardware RTS CTS and software XON XOFF flow control are enabled 62 Fax Operation Class 2 0 Command Set Command Syntax lt command gt lt value gt __ Execute a command or set a parameter lt command gt Read permissible settings lt command gt Read the current setting Supported Commands FAA n _ Auto answer mode parameter type FBO n __ Phase C data bit order _ _ OS PR Select reversed bit order in receiving mode for phase C data FBS _ Buffer size parameter read only FCC vr br w F DCE capability parameter Refer to d ln df ec bf st FDCC command in Class 2 for parameter settings FCLASS n E Service class selection Refer to FCLASS Class 1 command in previous section DCE response fax connection made FCQ lt rq gt Copy quality check capability parameter lt tq gt disabled enabled enabled Fax Operation 63 disabled enabled enabled FCR n _ Capability to receive parameter remote device remote device 255 1s units a document reception FDT Transmit phase C data command releases the DCE to proceed with negotiation _ sein alee as receiv d Determine that the last received bits of T 4 EOL patterns are byte aligned by the DCE with necessary zero fill bits inserted __ Procedure interrupt
19. on setting up the rack Installation 9 Installing the modem card The rack system in which you will install your modem has sixteen available modem slots You may use any slot for a card without regard to the slot number or sequence To install a card 1 Hold the modem card by the front and slide it into an available slot 2 Push the card gently but firmly until it seats 3 Screw the modem card holding screws into place to secure the card in its slot FONOTE THE MODEM CARD WILL NOT SEAT AND THE HOLDING SCREWS WILL NOT TIGHTEN IF YOU INSTALL THE MODEM CARD UPSIDE DOWN Connect to phone lines Sixteen terminal blocks correspond to the sixteen modem card slots in the rack Each offers you flexibility with respect to the types of phone lines you may be using Each terminal block has three sections e U 336RE Section 1 terminals 1 amp 2 For standard telephone set connection e U 336R Section 1 terminals 1 amp 2 For standard telephone set connection e U 336RE Section 2 terminals 3 amp 4 For dial up line and 2W leased line connection e U 336R Section 2 terminals 3 amp 4 For dial up line e U 336RE Section 3 terminals 5 6 7 amp 8 Not used 10 Installation U 336R Section 3 terminals 5 6 7 amp 8 For leased line connection Connect to Computers Each modem slot has a corresponding 25 pin RS 232 female connector on the rear panel Connect a cable from the desired computer to the RS 232 con
20. on your software program s Echo or duplex feature Problem Each character you type appears twice on your computer screen Solution Both your modem and your communications software are echoing characters to your screen Use the EO command to disable modem echo or turn off your software program s echo or duplex feature Answer Problems Problem Your modem does not auto answer incoming calls Solutions 1 Make sure the supplied telephone cable is connected to your modem s LINE jack and not the PHONE jack 128 Diagnostics amp Troubleshooting 2 Your modem may not be set up for auto answer With the modem in command state type ATSO 1 and press Enter to have the modem answer on the first incoming ring To auto answer after a specific number of rings replace 1 with a value up to 255 Do not assign a value of 0 which turns off auto answer unless your software can respond to the modem s RING result codes 3 Check that the DTR LED is ON and that the RI LED flickers with each incoming ring If the LEDs do not respond in this way refer to your ZyXEL Modem Reference Manual 4 Set amp D0O and auto answer if your modem is not connected to RS232 or DTR is not ready Problem When you receive a phone call your modem immediately seizes control of the telephone line Solution Your modem may be configured for auto answering To disable auto answer type ATSO 0 and press Enter with the modem in command state D
21. parameter 0 Procedure interrupt requests from the remote station are ignored and not reported to the DTE n 1 Procedure interrupt requests from the remote station are accepted negotiated 64 Fax Operation Value Po and reported using the FVO response FIP Initialize facsimile parameters to factory default Current session parameter refer to FDCC Class 2 command in previous section parameter settings Session termination command Local ID string parameter Flow control options FIS vr br wd ln df ec bf st FLI string Tl 2 FLP n 0 5 5 l 5 II FLO n i n 1 Set XON XOFF software flow control FNR rpr tpr idr nsr identification Minimum phase C speed parameter refer to FMINSP Class 2 command in previos section for parameter settings Negotiation message reporting control parameters 0 Receiver parameters are not reported FIS and FTC response reports are suppressed Receiver parameters are reported FIS and FTC response reports are generated tpr 0 Transmitter Parameters are not reported FCS response reports are suppressed Fax Operation 65 ui Value __ FCS parameter is still loaded FCS response reports are generated idr 0 ID Strings are not reported FTI FCI and FPI response reports are suppressed idr 1 ID Strings are reported FNF FNS and FNC response reports are generated are suppressed nsr 1 Non s
22. retrain requested Page good retrain requested interrupt accepted request for procedure interrupt accepted FTC vr br w d In df ec bf st Remote fax station capabilities DCT frame information response refer to FIS command for the description of sub parameters Remote ID response Transmit Station ID TSI FTI TSI ID string The receiving DCE may count lt lc gt lt blc gt lt cblc gt and lt lbc gt due to DCE buffer overflow and report them Ic line count blc bad line count cblc maximum consecutive bad line count lbc lost byte count Report transition to voice Fax Operation 69 Extended Fax AT Command Set Extended Fax AT Commands are unique to ZyXEL modems The computer controls the modem through a set of extended fax AT commands and the modem responds with a set of status report result codes During data state compressed fax image data is flowing between the modem and computer The default serial connection speed is 38400 bps and it is higher than the fax link rate CTS RTS hardware flow control is used to regulate the data flow Your modem accepts the extended fax AT commands to set the modem mode and fax parameters Besides the extended fax AT commands the modem accepts all the other AT commands described in this chapter For instance you can use ATD to make a fax call or ATA to answer an incoming fax call When using the extended Fax AT commands you need to send the comman
23. the A O button while turning on the modem then release the button after 5 seconds 3 A Kernel Program responsible for the update process takes control of the modem It accepts a limited set of AT commands including the ATUPX command Repeat steps through 6 from the directions above to upload a file that contains valid firmware for your modem 132 Upgrading Your Modem 1 2 Terminal Pinouts Terminal Blocks Each terminal block has eight terminal pins for connecting phone lines to the corresponding modem in the rack A description and function of each of the eight pins is given below 5 For use with four wire leased line systems receive line For use with two or four wire leased line systems transmit line T For use with two or four wire leased line systems transmit line RX For use with four wire leased line systems receive line x Terminal Pinouts 133 PC Serial Port Pinouts BA BB CA CB CC AB CF 134 Terminal Pinouts Pin Signal Direction Description DTE DCE Data TXD Data RXD RTS CTS DSR me GND Data Carrier Detected DCD Transmit Clock Signal source DCE Receive Clock Local Analog Loopback Test Data Terminal Ready DTR Connect DCE to line Remote Digital Signa ITU TSS EIA Pin Signal Direction l Pin i i Description DTE Ring Indicator RI Transmit Clock Signal source DTE Macintosh Serial Port Pinouts The following table s
24. the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Users should not attempt to make such connections themselves but should contact the appropriate electrical inspection authority or electrician as appropriate This digital apparatus does not exceed the class A limits for radio noise emissions from digital apparatus set out in the radio interference regulations of Industry Canada The declarations of CE marking CE This product has been approved for connection to the Public Switched Telecommunication Network using interfaces compatible with ITU TSS recommendation 1 420 This product complies with the following directives vi 1 The Council Directive 89 336 EEC of 3 May 1992 on the approximation of the laws of the member states relation to Electro Magnetic Compatibility EMC Directive Council Directive 91 263 EEC of 29 April 1991 on the approximation of the laws of the Member States concerning telecommunication terminal equipment The Telecom Terminal Equipment Directive 93 68 EEC of 22 July 1993 amending the Directives 89 336 EEC 91 263 EEC and 92 31 EEC Marking Directive The Council Directive 92 31 EEC of 28 April 1992 amending directive on the approximation of the laws of the member states relating to electromagnetic compatibility Contacting ZyXEL If you have questions about you
25. with a common timing clock This timing clockis used to transmit data from the DTE to the modem which modulates the data according to this clock The receiving modem recovers the clock and data from the 30 Synchronous Mode Operation carrier and sends the data to the receiving DTE along with the clock There are three types of transmission synchronous clock sources to choose from 1 The internal clock is the one that suits most applications and is the default in this case the clock signal is generated by the sending modem 2 The slave clock is used when in remote digital loopback mode 3 The external clock is a signal generated by the sending DTE INTERNAL AT amp X0 The modem provides the clock and sends it to the DTE Adaptive rate can be used Default EXTERNAL AT amp X1 The DTE provides the clock and sends it to the modem Must use auto retrain cannot use adaptive rate SLAVE AT amp X2 Recovered receiver clock serves as transmission clock RTS Options There are two RTS options The choice depends on application and host terminal requirements In asynchronous mode RTS is used as a hardware flow control signal IGNORED AT amp R1_ RTS is ignored always assumed to be ON Default CTS TRACKS AT amp RO_ Delay before CTS responds to RTS RTS s change The delay is set in the S26 register Synchronous Mode Operation 31 Command State Options For synchronous data communication there are two
26. 3 85 Set minimum scan line time capability of the receiver 5 ms at 3 85 line mm T 7 7 T 3 85 Fax Operation 71 Set minimum scan line time capability of the receiver 10 ms at 3 85 line mm T 7 7 T 3 85 Set minimum scan line time capability of the receiver 20 ms at 3 85 line mm T 7 7 1 2 T 3 85 Set minimum scan line time capability of the receiver 40 ms at 3 85 line mm T 7 7 T 3 85 Set minimum scan line time capability of the receiver 40 ms at 3 85 line mm T 7 7 1 2 T 3 85 C6 Set minimum scan line time capability of the receiver 10 ms at 3 85 line mm T 7 7 1 2 T 3 85 Set minimum scan line time capability of the receiver 0 ms at 3 85 line mm T 7 7 T 3 85 P lt string gt Set local phone number to the phone number following the character P can store up to 25 characters The modem will exchange this phone number with the remote fax machine during initial handshaking Status Report Result Codes When your modem is in fax mode each ATD or ATA command will try to establish a fax connection Your modem will send a status report result code back to the DTE computer TONE time out BUSY Other party s phone line is busy NO ANSWER Quiet answer is not detected before time out 72 Fax Operation CONNECT FAX When a fax connection is successfully established the modem returns this message CONNECT FAX SnnnnVnTnRnbLnCnP lt string gt This message includes the connection speed
27. 75 CONNECT FAX 19200 CONNECT 9600 2400 CONNECT 2400 38400 CONNECT 14400 e Set external mail as String Error Level Fax Operation 75 ZyXEL 2 is The following is a sample setting in the BINKLEY CFG file for a Binkley system Init AT amp FX7S0 1 B1 FCLASS 6 ExtrnMail ZyXEL errorlevel 76 Fax Operation 8 AT Command Set Summaries Basic AT Command Set Function amp Description Ref Aaso o o o Re execute the last command once A gt Re execute the last command once or repeat the last call up to 9 times See also S8 pie inmeneinnuntatingsiie when enter in handshaking state Escape sequence code entered in data state wait for modem to return to command state Command Options Function amp Description _ Ref _ D re also 39 2 43 6 Bn ooo Handshake option S28 7 Select CCITT V 22 for 1200 bps B1 Select Bell 212A for 1200 bps communication Dial s numbers and options that follow see also 38 0 35 4 The options of s are listed as follows Digits for dialing iP Pulse dialing T Ton dialing AT Command Set Summaries 77 Function amp Description Ref ie for a time specified in S8 n Remaining digits will be dialed as in band DTMF E a dialing _ Hookflash a eee proceeding Answer mode fen for second dial tone a Remaining digits will be dialed as in band DTMF DL Repeat last ATD command aw Dial number stored in non vo
28. 79 133 134 Flash EPROM 3 79 133 134 Flow control 3 12 60 63 65 84 101 G3 fax handshaking signals and procedures 54 Gettys 28 Handshaking 20 26 27 28 36 53 72 73 74 77 83 102 108 111 121 127 137 Hyper Terminal 16 19 Hyper Terminal Program 16 IBM 1 ITU T vi 3 53 54 87 136 Kernel Recovery Mode 3 134 LED indicators 2 7 Macintosh 1 26 27 137 MaxFax 27 Minicom 28 Novell 1 Operating mode 3 OS 2 1 Passwords 40 Phase jitter 122 Power connecting 11 Index 137 138 Index Remote digital loopback 3 31 43 120 ROM code checksum 118 RS 1612 9 10 RS 232 iv 5 11 53 55 109 119 120 137 RTS 3 8 31 60 63 65 70 74 75 84 87 99 100 101 131 136 137 S N ratio 121 Security 2 39 40 41 90 103 104 Seyon 28 SMARTDRYV 25 S register 22 23 33 38 47 49 79 93 112 Switches 3 7 9 20 38 128 129 Synchronous mode 2 29 32 33 85 99 100 101 107 119 120 T 30 fax protocol 53 54 Terminal blocks 10 Troubleshooting 12 13 UNIX 1 28 104 User profiles 24 Warranty ii Warranty Card ii 5 Windows 1 16 26 28 Windows 95 1 16 XModem protocol 133 ZFAX 2 44 50 51 55 ZTerm 27
29. AM memory DSP code checksum DSP RAM memory EEPROM digital circuits and the analog circuit calibrations If successful the TST LED will be on during and off after the test If the test fails the SQ LED will flash The number of flashes will indicate the error as specified by the table below SYSTEM TESTING Self test indicator If no error occurs this message will last until the end of the test 1 ROM TEST FIAL ROM code checksum error 2 RAM TEST FAIL System RAM fails 3 LOADING The factory default settings will be DEFAULTS downloaded to the RAM and the self test will be re initiated This is not a real error 4 DSP RAM FIAL The testing of DSP RAM fails condition A 5 DSP RAM FIAL The testing of DSP RAM fails condition A VO CALIBRATION Analog circuit calibration error FAIL 7 VR CALIBRATION Analog circuit calibration error FAIL Diagnostics amp Troubleshooting 117 a FR CALIBRATION Analog circuit calibration error FAIL Loopback Tests The Analog Loopback Test Local Digital Loopback Test Remote Digital Loopback Test can all be initiated with AT commands from the terminal Use the AT amp T0 command to terminate the test Analog Loopback AT amp T1 This test can check almost every part of the modem and the RS 232 cable except the telephone line outgoing interface During Analog Loopback testing data from the terminal or computer is sent through an RS 232 cab
30. ATV0 and verbose ATV 1 result codes when an error corrected connection is made set S35 bit 7 to 1 ATS35 7 1 Numerical Verbose V1 vo Verbose V1 vo 16800 CONNECT 21600 51 CONNECT 1200 19200 Ss 2400 Status Registers amp Result Codes 113 Numerical Numerical vo vo 4800 24000 7200 26400 9600 28800 12000 31600 14400 33600 114 Status Registers amp Result Codes Status Registers amp Result Codes 115 1 O Diagnostics amp Troubleshooting Diagnostics The U 336R RE is equipped with several diagnostic capabilities Power on Self Test Analog Loop back Test Analog Loop back with Self Test Local Digital Loop back Test Remote Digital Loop back Test Remote Digital Loop back with Self Test Line Condition Status Display Re Transmission Indicator Throughput Display Link Status Report The diagnostic tests listed above apply to several modes of operation asynchronous or synchronous error controlled or non error controlled data compression enabled or disabled data mode You can use these capabilities to verify the line condition and the modem s functioning and performance and to locate the source of a communication problem 116 Diagnostics amp Troubleshooting NOTE ITEMS APPLICABLE EXCLUSIVELY TO U 336R INSTALLED IN RS 1612 RACK SYSTEM Power On Self Test At each power up or upon a reset command from the panel the modem will test the ROM code checksum system R
31. E CALLER ID FEATURE FOR MOST OTHER CALLER ID SCHEMES ONLY THE CALLER TELEPHONE NUMBER IS PROVIDED Distinctive Ring Distinctive Ring is a phone service that may be offered by your phone company Check your phone company for availability With this service you can have several phone numbers assigned to the same phone line The phone company will send a different type of ring signal for each phone number being called The subscriber can distinguish which number is called by which type of ring is received One benefit of this feature is the ability to have three numbers on the same line allowing you to list the three numbers for voice data and fax respectively You can then have your fax machine answer only the ring corresponding to the fax number and have your modem answer only the ring corresponding to the data number A voice call will not be answered by either fax machine or data modem and it will only be answered when someone picks up the phone You can also have the answering machine answer only the voice ring A more complicated use is that you can have one number for multiple uses such as one number for both data and fax A ring signal is a composition of repeated on and off states Different types of rings usually correspond to different compositions of the ON part cadence of the ring Your modem can distinguish up to four types of ring signals and can be commanded to answer or not answer any one of these four types of rin
32. I CSI ID Report remote ID response Called Station string ID Fax connection established response FCS vr br w negotiated session parameters DCS d frame information response Refer to In df ec bf st FIS comnd FET lt ppm gt __ Post page message response Fax Operation 67 Function and Description __ procedure interrupt requested interrupt requested interrupt requested FHS lt hse gt __ Call termination status 0 OF TIA 592 for details Transmit phase A and miscellaneous 10 1F errors Refer to TIA 592 for details Transmit phase B hang up codes Refer 20 3F to TIA 592 for details Transmit phase C hang up codes Refer 40 4F to TIA 592 for details Transmit phase D hang up codes Refer 50 6F to TIA 592 for details 70 8F TIA 592 for details 90 9F TIA 592 for details AO BF TIA 592 for details Remote fax station capabilities DIS frame information response refer to FIS command for a description of sub parameters FNC a Report NSC non standard Commands FIS vr br wd ln df ec bf st NSC FIF frame string FNF NSF FIF string Report NSF non standard Facilities frame 68 Fax Operation FNS Report NSS non standard Setup frame NSS FIF string FPI Report remote ID response Polling CIG ID Station ID CIG string PO Remote polling indication FPS ppr lc b 30 phase C page reception response Ic cblc lbc Received page good Page bad
33. T amp WZ Special Functions 51 52 Special Functions 7 Fax Operation In the sections below we will describe how the U336R RE works as a fax machine the ITU T T 30 fax protocol the Class 1 2 and 2 0 fax commands and ZyXEL extended fax AT commands Also covered are the status report result codes the flow control protocol associated with ZyXEL fax AT commands and some specific fax applications The instructions for using the included modem fax voice utility program are included on the software disk Some distributors and dealers may have included other software with your modem For help with such software refer to the software instructions Modem as Fax Machine Modems can also be designed to include a fax transmitting and receiving function similar to a fax card Since the modem s interface with the computer is the standard serial RS 232 interface this interface is used for both modem and fax operations Fax image coding and decoding must be done in the computer Your modem supports Group 3 send and receive facsimile functions For normal fax operation you must connect the modem to a computer usually a PC The computer serves as the input output device for the fax function The RS 232 serial connection or the ZyXEL serial port interface connects you modem to the computer Your modem uses the same interface for both data and fax applications In fax operations the modem performs protocol handshaking and image data transfer The
34. U 336R RE User s Guide Version 1 0 Mar 1997 ACCESSING INTERNET amp INTRANET ZyXEL Limited Warranty ZyXEL warrants to the original end user purchaser that this product is free from any defects in materials or workmanship for a period of up to two 2 years from the date of purchase During the warranty period and upon proof of purchase should the product have indications of failure due to faulty workmanship and or materials ZyXEL will at its discretion repair or replace the defective products or components without charge for either parts or labor and to whatever extent it shall deem necessary to restore the product or components to proper operating condition Any replacement will consist of a new or re manufactured functionally equivalent product of equal value and will be solely at the discretion of ZyXEL This warranty shall not apply if the product is modified misused tampered with damaged by an act of God or subjected to abnormal working conditions Note Repair or replacement as provided under this warranty is the exclusive remedy of the purchaser This warranty is in lieu of all other warranties express or implied including any implied warranty of merchantability or fitness for a particular use or purpose ZyXEL shall in no event be held liable for indirect or consequential damages of any kind or character to the purchaser To obtain the services of this warranty please contact ZyXEL s Service Center re
35. Z lt enter gt saves the settings to power up profile Macintosh Serial Port When you connect your modem to a Macintosh computer make sure the cable is a hardware handshaking type These cables are readily available Macintosh Lisa model 128 and 512 don t have hardware handshaking The serial port on these very outdated models is provided as a 9 pin connector similar to that of a PC The serial port on all other Macintosh models is a Mini 8 Mac Software Tips All terminal programs which make use of the hardware handshaking feature can be used on the Apple Macintosh Such programs are 26 Basic Modem Operation readily available as PD shareware or commercial software One of the most powerful shareware programs available is ZTerm Fewer programs are available to make use of the ZyXEL s fax features One program which has found wide acceptance is FaxSTF which can be installed like a printer driver allowing you to send faxes from almost any program which runs on your Macintosh At the same time it allows automatic fax receiving This program includes powerful line manager software which makes sure fax software does not interfere with other programs using the serial ports If the modem is turned off when you start your Macintosh with the line manager activated the computer may seem to freeze for a few minutes During this time the line manager software tries to locate and to set up the modem Turn on your modem before you start your Ma
36. and the fax parameters explained in the table below Field Snnnn Fax connection speed nnnn is a 4 digit number representing the connection speed nnnn 1440 1200 9600 7200 etc 1440 and 1200 stand for 14400 and 12000 Vertical resolution n 0 or 1 Vn ion n Tn Rn Ln Cn P lt string gt After each fax disconnection the following result code is sent back to the DTE DISCONNECTnP lt string gt This result code informs DTE of the disconnecting status DISCONNECTO DISCONNECT Fax Operation 73 The basic AT commands ATVO and ATQ1 do not affect the above CONNECT and DISCONNECT status report result codes The modem will always return the same status format as above Flow Control In extended fax AT command mode your modem always uses hardware CTS RTS flow control The flow control signaling used sending a fax is e CTS is used by your modem for DTE flow control When the modem turns CTS off the buffer inside the modem is full and cannot accept any more data The computer should send data only when CTS is ON e RTS is used by the computer to signal your modem that the fax message is finished As soon as RTS off is detected the modem starts the post message handshaking to make sure that the remote facsimile has received the fax message successfully Then it hangs up the phone and sends a status report to the DTE If you want to send a multi page fax just add the RTC signal between the fa
37. c Modem Operation Start the terminal program by double clicking the Test Connection icon When the terminal window appears enter the dial command with ZyXEL s BBS as the phone number Type ATDT17146930762 lt enter gt Omit the 1714 if you are in this area code The modem will go off hook dial the number and after a few seconds of negotiation tones you should be connected to our BBS You will receive a login message asking for your name For the purposes of this example you need not continue Just click the disconnect icon on the toolbar Quick Tips when issuing AT Commands The ENTER or RETURN key must be pressed to execute a command Multiple AT commands can be combined into one line For example AT amp D2 and AT amp NO can be combined into one line AT amp D2 amp N0 Your modem processes commands from left to right The AT command that appears to the right might over write the command to the left if they are trying to accomplish tasks or set modes that cannot coexist If you see duplicated characters for each one you type your modem and software both have their echo feature turned on The modem command echo state is switched Off using ATEO and On using ATE default To eliminate the double characters turn off the software s command echo rather than using the ATEO command If you see no characters in your Basic Modem Operation 19 terminal window when you type the modem s echo setting
38. cintosh to avoid this delay MaxFax is another fax software for Macintosh computers Drivers are available which allow use of the serial ports at speeds up to 230 4 Kbps These drivers are currently available for Power Macs and AV Macs only Helpful Hints for UNIX Based Computers Serial Cable Consult the documentation that came with your workstation to find the part number of or information on how to make a serial cable for your workstation The cable should be a hardware handshaking type Refer to Chapter 12 Terminal Pinouts for a complete list of signals provided for the modem s serial port Basic Modem Settings for UNIX Unix environments usually don t like modem responses or echoing of commands Therefore you should set ATE0Q1 Basic Modem Operation 27 Depending on your Unix setup the cable and software used you may have to disable carrier detection using AT amp C0 Unix Software Tips In order to use your ZyXEL modem from a terminal screen or an X Windows application you need a program such as Minicom or Seyon If you wish to make use of your ZyXEL modem s special features special gettys such as mgetty or vgetty are needed These programs are avaiable from several ftp sites Some archives also contain source files You should suppress the modem s result code to ATQ1 because some applications may be confused by them 28 Basic Modem Operation 4 Synchronous Mode Operation This chapter introduces you to t
39. commands will be covered in the chapters that pertain to their use Modem Result Codes When you execute or try to execute an AT command your modem sends a result code to let you know whether the command was executed An OK result code means the AT command you sent was executed If you receive an ERROR code it means the command was invalid Your modem also provides result codes that show e Whether or not a Dial Tone was detected when the modem originated a call e Ifa busy signal was detected when the modem originated a call e If aremote telephone ring was detected when dialing e The speed protocol and error control data compression method used e If your modem has detected an incoming ring Result codes can originate from any of eight result code sets The ATXn command lets you choose which set of result codes your Basic Modem Operation 21 modem uses By default your modem uses result codes equivalent to the ATX5 command The result code options will be covered more thoroughly in later chapters Viewing S Register Values Status registers or S registers contain values that determine the modem s operating characteristics Whenever you send an AT command to your modem you are actually changing the value of an S register You can use the Sr command to view the value of S register r For example to view the value of S register SO which controls auto answering type ATSO and press Enter The modem re
40. ctive Break clears the buffer Expedited Break is sent immediately to the remote system For internal modem only Destructive expedited Nondestructive expedited Received carrier provides synchronous transmit clock signal Remote or Slave clock to pin 15 of EIA 232D YO 88 AT Command Set Summaries Function amp Description n Nondestructive unexpedited Display all the phone numbers stored in non volatile RAM fed amp Zn s n 0 49 Write phone number s to NVRAM at location n n 0 49 use AT Dn or ATS29 n to set the default dial pointer Extended AT Command Set Options Function amp Description ef Dial backup selection Disable dial backup ees BO Enable dial backup and set dial backup pointer at telephone directory location n 1 See also S34 S44b2 BO Bn Character length including start 15 3 4 stop and parity bit directory location n aw Modem error control negotiation _ S21 0 EO if error control negotiation fails keep the non error control connection El If error control negotiation fails disconnect the call hang up AT Command Set Summaries 89 i Remote configuration enable Accept remote configuration Remote Digital Loop back must be granted amp T4 Security function selection _ S36 5 en es type 1 security with password check ZyXEL to ZyXEL only Nn ow ON Ad Enable type security with password check a
41. d AT FCLASS 6 first Following are the fax related AT commands Mode Settings Set the modem into V 17G3 FAX mode Same function as the extended AT command AT amp N32 BO Set fax receiving mode The connection parameters and received fax data are sent to the DTE continuously following the connect message Default B1 Set fax receiving mode The messages are separated from the received fax data The modem sends CONNECT FAX and ZyXEL first then it waits for the DC2 character hex18 to send the fax data When the modem receives a DC2 from the DTE it starts to send the fax connection parameters Snnnn VnTnRnLnCnP lt string gt lt CR gt lt LF gt then the received fax data In this mode the 70 Fax Operation modem will wait for DC2 at the beginning of every page The DTE software should detect the page separator RTC and then sends the DC2 to receive the next page of fax data This mode is used with a BBS receiving faxes This mode is for the polling feature of the modem In this mode the modem will send a polling signal to the remote fax device to ask to receive a fax from the remote fax device The received fax data will be sent to the DTE continuously following the connection message Displays the ring cadence Parameter Setting scan line length of 215 mm scan line length of 255 mm scan line length of 303 mm 12 C C1 2 Set minimum scan line time capability of the receiver 20 ms at 3 85 line mm T 7 7 T
42. de Default 6 7 Jo 0 Assume DTR always On __ amp DO_ 98 Status Registers amp Result Codes Hi amp D2 hex Bit mapped register amp P1 1 2 3 20 ATX4 SX 108 1 DTR OFF ON amp D1 transition causes dial of the default number 108 2 Data Terminal Ready DTR OFF causes the modem to hang up and return to command state 108 2 DTR OFF causes the amp D3 modem to hang up and reset the modem to profile 0 after DTR dropped Command echo disabled Command echo enabled Tone dial Default T T Tone dial iP 1 Pulse dial make break ratio amp PO ATXS error control result X5 code enabled Default Function and description ATX6 error control result code enabled ATX7 error control result code enabled Display result code in numeric format see 35 7 verbose format Modem does not return result code see also S40 1 Ring Volume cool increment of 2 in decimal value Speaker volume control increments of 32 in decimal value Specify the time delay that DTR signal needs to be OFF before it will be recognized in 10 ms units If S25 0 the delay time is set to 4 ms Set the delay in TO millisecond units between the RTS and modem s CTS response in synchronous mode see amp Rn command Bit mapped register Modem error control Status Registers amp Result Codes 99 Function and description No error control S41 0 38 5 S41 0 V 42 V 42bis
43. e 30 Reports RING 2 for fax CNG tone Disables data CNG tone detection 0 Reports RING for data CNG 5 Reports RING 1 for data Q Z Q aj 5 2 Reports RING 3 for data i hex x Bit mapped register 24 0 18 Receive level adjustment 43 dBm Default 33 dBm 26 dBm 26 dBm Select Mark as the first amp N12 Q Z S 5 2 2 5 Status Registers amp Result Codes 109 Command bit_ dec_ hex Function and description _ Ref signal of the V 23 handshaking sequence Default 128 Select Space as the first signal of the V 23 handshaking sequence S56 dec hex 050 0 0 FF Hook flash detect time in 255 units of 10ms country specific 4 16 10 Enables the reporting of Class 1 capability in the response to FCLASS Disabled busy detection when dialing is proceeding Default 64 eee busy detection in dialing period d Force the modem to use the new values of S18 to fix the baud rate when answering 1 Force the modem to use the old values of S18 compatible with 1496 series modem to fix the baud rate when answering a S register bit number b used in ATSr b n and ATSr b dec Decimal value x used in ATSn x 110 Status Registers amp Result Codes Equivalent Hexadecimal value Factory default when listed in Reference column Note AT is omitted when an AT command is referred to in the Reference c
44. e leased line the line plug should be plugged into the jack assigned DIALUP for RE model or leased line for R model on the rear panel AT amp L2 The modem is connected to a 4 wire leased line Plug the line into the LEASED LINE jack Leased Line Operation 35 Power Level Setting Your modem s leased line mode transmission power level can be adjusted from 0 dBm to 27 dBm in 1 dBm increments AT Command AT PO The default is 9dBm The adjustable range is oh from 0 to 15dBm effective in leased line AT P15 operation only If bit 3 of S35 is 8set this range will change to 12 to 27dBm Leased Line Handshaking In a typical dial up connection the originating modem dials the number and waits for the answering modem s carrier signal The answering modem can be commanded to either answer the call immediately or after a specified number of rings In a leased line connection the communication circuit between two modems is always present Dialing and waiting for rings does not occur in this situation If these two modems want to establish a data link one must be designated as the originator and the other as the answerer You can set this manually or automatically Manual Connect Set the modem to leased line mode Type the asynchronous command ATD to the originating modem and ATA to the answering or press O on the RS1612 control panel for originating mode and then press A for answer mode Use AT Mn or set S14b0 to select
45. e local modem s requests for the remote modem to retrain when the signal quality is poor Round Trip Echo Delay ED Measured in T 1 2400 sec Will be re measured in every retrain action Carrier Loss Counter CL When operated over a leased line it is the count of the carrier s temporary drop out if there is any Diagnostics amp Troubleshooting 121 FRN Fast Rate Negotiation Granted FG The count of the granting of the remote modem s change rate FRN requests Each request is an indicator of a changed receiving condition FRN Request FR The count of the local modem s requests to change the rate Block Retransmitted BR The count of the blocks retransmitted bad reception on the remote modem FCS Frame Check Sum Errors FE The count of the FCS errors received block errors bad reception on the local modem Link Status Report ATI2 During a connection the modem will record information about link operations You can use the AT command ATI2 to see the summary as show in the sample below ZyXEL U MODEM LINK STATUS REPORT ZyXEL U MODEM LINK STATUS REPORT Chars Sent 2420 Chars Received 2420 Octets Sent 950 Octets Received 950 Blocks Sent t3 Blocks Received 13 Blocks Resent 0 Max Outstanding 8 Max Block Size 256 122 Diagnostics amp Troubleshooting Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Error
46. e modems are on line Remote Digital Loopback Test AT amp T6 This test will request the remote modem to do a digital loopback During testing the local modem will send a remote digital loopback request to the remote modem according to V 54 If the remote modem supports V 54 and is programmed to grant this kind of request it will resend all of the received data back to the local modem The local terminal or computer will receive all of the data it sends out This test is applicable when the remote modem and local modem both provide V 54 Remote Digital Loopback capability This test can be initiated by either modem when the modems are on line Remote Digital Loopback with Self test AT amp T7 This test generates data from the modem itself instead of input data from the RS 232 interface The data will go through the same path as it would with the Remote Digital Loopback Test In asynchronous mode the pattern consists of printable ASCII characters You can see the results on the screen In the synchronous mode the pattern is made up of scrambled binary 1 and the Throughput Meter of the initiated modem will change to a Bit Error Rate Meter This test can be initiated by either modem when the modems are on line Indicator Lights Retransmission Indicator In the error control mode an error occurring in the link will cause the data to be re transmitted At the same time the RI LED will flash This also indicates the quality of the line
47. e sure to enable the disk cache by including SMARTDRYV execution in your AUTOEXEC batch file Default Modem Settings for PC s Your modem s factory settings are configured for operation with PC type computers and communication software In most cases no additional settings will be required The following are some of the default settings that are used for operation with PC computers and software use both V 42bis and MNP 5 data compression speed ZyXEL Serial Parallel I O Card For high speed PC to modem communication ZyXEL produces a special I O adapter card This card includes a serial port and a parallel port each with special features particularly when working with a ZyXEL modem for example Basic Modem Operation 25 The serial port is 16550 compatible for most communication software usage It has a speed of up to 460 8Kbps and data loss errors will not occur when working with a ZyXEL modem s serial port This solves high speed communication problems in Windows and other multi tasking systems The serial port has a 32 byte transmission and a 32 byte receival FIFO to increase communication program efficiency Helpful Hints for Macintosh Computers Special AT Command Settings for Macintosh For operation with Macintosh computers you may use the factory default settings with one exception You must set the modem to ignore the DTR signal as follows Type AT amp DO lt enter gt set modem to ignore DTR AT amp W
48. e unique bit pattern 01111110 known as a flag Output Parameter Output Value Description Chars Sent Number of characters DTE has sent to modem AT Command Set Summaries 8 amp 1 Output Parameter Output Value Description Chars Received Number of characters modem has sent to DTE Octets Sent Number of data bytes sent to remote modem modem modem Number of data blocks received from remote modem Blocks Resent Number of blocks resent due to remote modem request If there were many blocks resent you may have experienced line trouble or protocol incompatibility acknowledgment by remote modem Max Block Size Maximum octets contain in a block Retrains Requested The number of times local modem requested retrain Link Duration Total link duration time in minutes requested retrain recovered recovered Errors in frame block checksum If there were many FCS Errors you may have experienced problems on the line Time Units 1 2400 sec Receiver Overrun For modem s processor power measurement Disconnect Reason Local Hang up Remote Hang up 82 AT Command Set Summaries Output Parameter Output Value Description disconnected Resent Expiration Break Time out Carrier Lost 1 Carrier Lost 2 Remote No handshaking hang up busy tone response Keyboard Abort Security check Inactivity ATH command D V hang up Extended AT amp Command Set Options Fu
49. et The modem will go into synchronous operation after connection Answering from Synchronous Mode Auto Answer Set the modem to synchronous mode Set the S register SO to equal the number of rings before auto answer occurs Set it from the terminal if amp M1 is set using the asynchronous AT command or select the STATUS REGISTER menu to change the SO value Manual Answer Type ATA from the terminal if amp M1 is set Synchronous Mode Operation 33 34 Synchronous Mode Operation 5 Leased Line Operation A leased line is a permanent telephone line connection between two fixed points It can be dedicated copper wires or a leased telephone circuit from the telephone company Four wire leased lines use one pair of wires to transmit data and a second pair to receive Two wire leased lines transmit and receive on the same pair of wires The U 336R supports 2 and 4 wire leased lines while the U 336RE supports 2 wire leased lines Connecting to a Leased Line Your modem default line is a dial up type DL which includes a separate leased line jack The leased line must be connected to the jack labeled LEASED LINE located at the rear of the modem You can set your modem for leased line operation by typing commands from the terminal or by selecting it from the front panel The leased line phone jack pin assignments are shown in Chapter 12 Terminal Pinouts Line Type Setting AT Command AT amp L1 The modem is connected to a 2 wir
50. fer to the separate Warranty Card for your Return Material Authorization number RMA Products must be returned Postage Prepaid It is recommended that the unit be insured when shipped Any returned products without proof of purchase or those with an out dated warranty will be repaired or replaced at the discretion of ZyXEL and the customer will be billed for parts and labor All repaired or replaced products will be shipped by ZyXEL to the corresponding return address Postage Paid USA and territories only If the customer desires some other return destination beyond the U S borders the customer shall bear the cost of the return shipment This warranty gives you specific legal rights and you may also have other rights which vary from state to state Copyright 997 by ZyXEL The contents of this book may not be reproduced in any part or as a whole or transmitted in any form or by any means without the written permission of the publisher Published by ZyXEL Communications Corporation All rights reserved Note ZyXEL does not assume any liability arising out of the application or use of any products or software described herein Neither does it convey any license under its patent rights nor the patents rights of others ZyXEL further reserves the right to make changes in any products described herein without notice This document is subject to change without notice Acknowledgments Trademarks mentioned in this manual are used f
51. g 35 Power Level Setting 36 Leased Line Handshaking 36 Manual Connect 36 Auto Handshake 36 Leased Line Dial Backup 37 Dial Backup 37 Aborting from Leased Line Operation 38 Terminating a Leased Line Connection 38 6 Special Functions 39 Security Functions 39 Levels of Security 39 User Passwords 40 Remote Configuration 42 Caller Number Delivery Caller ID 43 Distinctive Ring 46 Extended Distinctive Ring EDR 47 Setting Up EDR 49 EDR Application Example 50 7 Fax Operation 53 Modem as Fax Machine 53 ITU T T 30 Fax Protocol 54 Fax Command sets 54 Defining the Fax Command Sets 54 Class 1 Command Set 55 Class 2 Command Set 56 Class 2 0 Command Set 63 Extended Fax AT Command Set 70 Flow Control 74 Fax Reception from a BBS 75 S AT Command Set Summaries 77 Basic AT Command Set 77 Description of ATI2 Output 80 Extended AT amp Command Set 83 Extended AT Command Set 89 9 Status Registers amp Result Codes 92 S Register Descriptions 92 Basic S Registers ATSn x 92 Extended S Registers ATSn x 93 Result Code Options 111 ATXn Result Code Option Table 111 Result Code Field Descriptions 113 Connect Strings for Error Corrected Connections 113 10 Diagnostics amp Troubleshooting 116 Diagnostics 116 Power On Self Test 117 Loopback Tests 118 Indicator Lights 119 Line Condition Status Display 120 Link Status Report ATI2 122 Trouble Shooting 126 AT Command Set Problems 126 Command Echo Problems 128 Answer Problems 128 Dia
52. g signals Following is a list of these four types of ring signals These are the ring types used in the USA The difference among the 46 Special Functions ring types is the two second ON part of the ring signal It comprises a long double short or triple short ring S register S40 bits 3 6 are used for distinctive ring control Each bit controls the answering of a particular ring type Setting a bit to 1 on enables answering setting it to 0 off rejects the ring Note that the ring may still be heard even if it is not counted as an accepted ring by the modem The control relationships between bits 3 6 in register S40 and the different ring types are Type Bit Ring Sequence on 1 2s or 2s on 4s off 0 8s on 0 4s off 0 8s on 4s off 0 4s on 0 2s off 0 4s on 0 2s off 0 8s on 4s off 4 le 0 3s on 0 2s off 1s on 0 2s off 0 3s on 4s off NOTE IF ALL OF THESE BITS ARE 0 OFF ANY RING WITH A DURATION LONGER THAN 100 MS WILL BE ACCEPTED USE THIS DEFAULT IF YOU DO NOT HAVE DISTINCTIVE RING SERVICE If more than one type of Distinctive Ring is turned on RING n will be reported for an incoming ring signal where n is the ring type number NOTE COUNTRIES OTHER THAN THE U S MAY HAVE DIFFERENT SPECIFICATIONS FOR DIFFERENT RING TYPES THE MANUFACTURER MAY APPEND OTHER SETS OF RING TYPE SPECIFICATIONS TO SUIT EACH COUNTRY S NEEDS Extended Distinctive Ring EDR Extended Distinctive Ring EDR is
53. he use of the U 336R RE for synchronous operation The modem can be used as a synchronous modem when it is connected to a synchronous computer or terminal It is of course necessary to make sure that the remote modem and system are also set to synchronous mode Synchronous operation applies to all of the non FSK modes the modem is supplied with Before synchronous transfers are started some initial settings should be made V 25bis Command Set To enable V 25bis commands use the AT I1 command For synchronous applications the modem is permanently set in normal situations for use with one application Save the desired settings in the power on profile and the modem will be initialized to synchronous mode amp M3 with V 25bis command enabled I1 when powered on A special command RST is provided to get the modem back to asynchronous AT command mode from V 25bis mode You can enter this RST command in either synchronous or asynchronous V 25bis mode Synchronous Mode Operation 29 Parameters provided CRS CRS n Call request with number from memory 0 n 49 nis the memory location 0 n 49 numbers DIC Ignores incoming call CIC Accepts incoming call CFI CFI XX Call failure indication ET Engaged Tone NS Number is not stored RT RING Tone AB Abort Call NT Answer Tone is not detected Incoming call Response to RLN AT command mode Clock Options Synchronous data must be transmitted and received
54. hows the wiring of a modem Macintosh hardware handshaking cable Din 8 DB 25 Handshaking Out 6 notconnected o 7 8 GPItoCD Carrier detected 7 GND Ground needed for RS 232 connections Terminal Pinouts 135 136 Terminal Pinouts 13 Index 16450 UART 25 16550 UART 5 25 26 2 wire leased line 2 4 35 95 4 wire leased line 2 4 35 85 86 95 Amiga 1 Analog loopback 3 Asynchronous mode 2 AT commands 3 15 16 17 19 21 23 32 40 53 70 74 119 127 128 134 Audio Monitor 4 Batch mode 43 Call back security 2 Caller ID 2 43 44 46 50 91 Canadian User Information iv Card slots 10 Clock 30 31 88 95 COM port 12 16 128 129 Communication software 2 5 11 12 15 17 25 26 32 44 128 129 131 Computer connecting 11 Contacting ZyXEL vi CTS 3 8 31 60 63 65 70 74 75 84 87 99 100 101 131 136 137 Data compression 1 22 25 81 84 117 Diagnostics 3 117 Dialing type 3 Digital loopback 3 31 43 120 Distinctive ring 2 DOS 1 DSP code checksum 118 DSP RAM memory 118 DTE 1 8 30 31 45 57 60 63 64 65 67 71 73 74 75 81 82 83 84 97 105 107 114 124 125 136 137 EDR 3 47 48 49 50 51 110 EIA TIA 54 Error correction 1 25 59 Extended AT command set 2 Fall back 2 91 101 126 Fall forward 2 126 Fax AT commands 3 70 Fax commands 3 FCC Information iii Firmware 3
55. ialing Problems Problem Your modem does not dial calls Solutions e Make sure the supplied telephone cable is connected to your modem s LINE jack and not the PHONE jack e You are using touch tone dialing on a line that requires pulse dialing Change your communications software to use pulse dialing Diagnostics amp Troubleshooting 129 Data Transfer Problems Problem You can make a data connection with a remote modem but encounter frequent errors during data transfers Solutions 1 Your modem and communications software may be configured for different flow control methods Be sure your modem and software are both using hardware RTS CTS flow control or software XON XOFF flow control 2 To verify that your modem and communications software are using the same flow control method type AT amp T8 and press the Enter key with your modem in the command state You should see a smooth stair stepping ASCII test pattern flowing diagonally across your screen Connect Problems Problem Your modem disconnects while communicating with a remote system Solutions 1 The remote system may have hung up Type ATI2 and press Enter to view the link status report which will include the reason for the disconnect For information on understanding this report refer to your ZyXEL Modem Reference Manual 2 You may have subscribed to Call Waiting and received an incoming call that interrupted your data connection See your te
56. ine escape code character default 43 dec A value of 128 255 disables the escape Define ASCH Carriage Return 013 Define ASCI Line Feed 010 disables the Backspace key s delete function Set the number of seconds the modem waits 003 before dialing if X0 or X is selected If a setting of X to X7 is selected the modem will dial as soon as it detects a dial tone This register also sets the time out interval for the 92 Status Registers amp Result Codes Ref as wW dial modifier to wait for the dial tone See also S41b4 waits for a carrier Set duration in seconds for pause option in 002 Dial command and pause between command re executions for Repeat gt command non FSK or half duplex operation Set duration in tenths of a second modem Set duration in tenths of a second of remote carrier signal before recognition Ignored if in Pee ee after loss of carrier before hanging up S11 Set duration and spacing in milliseconds of dialed Touch Tones Extended S Registers ATSn x Function and description Bit mapped register 1 2 2 Capture modem manufacturer information during V 42 handshake can be displayed at ATI2 lt Last Speed Protocol gt line if available Flash or ZyXEL stands for ZyXEL connection S8 S9 S10 1 M Originate mode Modem auto handshake on M1 Answer mode o 0 Grant Remote Digital Loop amp
57. ing operations The command characters specific to each function are shown in bold type Dialing using the ATD Command Touch Tone Dialing ATDT 555 1212 Pulse Dialing ATDP 555 1212 Tone and Pulse Dialing ATDP 555 1212 WT 24 Dialing Through a PBX ATDT 9 W 555 1212 THE W IN THE DIAL STRING WILL CAUSE THE MODEM TO WAIT FOR A SECOND DIAL TONE BEFORE IT CONTINUES TO DIAL Basic Modem Operation 17 Pausing During Dialing ATDT 9 555 1212 NOTE THE PAUSE TIME FOR EACH COMMA IS DEFINED BY S REGISTER S8 DEFAULT IS 2 SECONDS PER COMMA Dialing Without Waiting for Dial Tone ATXOD 555 1212 Originating a call using an Answer Tone ATDT 555 1212 R Redialing the Last Number Called ATDL Waiting for Five Seconds of Silence ATDT 800 555 1212 123456 1 714 555 1212 Transferring a Call using flash hook ATDT 2468 Auto Answer and Hook Controls Enabling Auto Answer ATS0 n FONOTE IN THIS EXAMPLE N IS A NUMBER FROM 1 TO 255 THAT CORRESPONDS TO THE NUMBER OF RINGS AFTER WHICH YOUR MODEM ANSWERS AN INCOMING CALL Disabling Auto Answer ATS0 0 Manually Answering a Call ATA Take modem off hook ATHI1 Hang up modem on hook ATHO Manually Disconnecting a Call ATH Making Your First Connection For this example we will use the connection you created in the Hyper Terminal program to dial the ZyXEL BBS If you are using a different terminal program run the program according to the instructions provided with it 18 Basi
58. ion in memory that the phone number is to be stored and the n is the phone number itself Example To store the number 1 816 555 1212 in memory location 2 type AT amp Z2 17145551212 lt Enter gt You can store up to 50 telephone numbers Dialing Stored Phone Numbers The AT command syntax used to dial a stored number is ATDS n The n is the memory location of the stored number you want to dial AS A GENERAL RULE WHEN A LETTER IN AN AT COMMAND DEFINITION IS SHOWN IN ITALIC TYPE THE LETTER IS NOT TO BE ENTERED AS PART OF THE COMMAND BUT RATHER IS REPRESENTATIVE OF A NUMBER OR STRING EXPECTED AS INPUT FOR EXAMPLE THE LETTER S IN THE ATDS N COMMAND IS ACTUALLY TYPED UNLIKE THE S IN THE AT amp ZS N COMMAND WHICH REPRESENTS A NUMBER Basic Modem Operation 23 Saving Settings and User Profiles There are some cases where you may wish to save the settings you have made as the default settings that are recalled when your modem is powered up The AT amp WZ command selects the current settings as the power on profile There are four profiles that can be changed by the user and one factory default profile The following table lists the syntax for the commands involved in storing recalling and viewing profile settings AT amp Vn Views the settings in profile n n 0 to 5 n 0 views current settings AT amp Wn Stores the current settings in user profile n n 0 to 3 ATZn Rese
59. ion while Class 2 commands allow the modem to do many negotiations simultaneously The Class 1 protocol uses the modem to transmit fax data only The complete organizational overhead for this protocol is handled by the connected computer The Class 1 command set is also called the TIA 578 standard Several revisions of the class 2 standard exist Implementations conforming to different revisions may not work together A formally approved version is the Class 2 0 command set also called the TIA 592 standard Class 1 Command Set FCLASS n__ __ Service class selection n SettoDatamode o nd pine SettoClass2 mode n 2 0 Setto Class 2 0 mode n6 SettoZFAX mode O IF S57 4 0 DEFAULT THE RESPONSE TO THE CLASS COMMAND WILL NOT REPORT CLASS 1 CAPABILITY THIS IS DUE TO THE FACT THAT SOME FAX SOFTWARE PACKAGES MAY GET CONFUSED BY THIS RESPONSE Value 0 255 Stop transmission and pause in 10 ms Fax Operation 55 Value a aes is 0 255 Wait for silence in 10 ms units FTM lt MOD gt FRM lt MOD gt Receive data with lt MOD gt carrier Ooo ai ee eee carrier eee ee carrier The lt MOD gt parameter for the preceding commands take the following values Modulation Requirements V 21 ch 2 Required for FTH amp FRH Required for FTM amp FRM Required for FTM amp FRM Required for FTM amp FRM Required for FTM amp FRM Transmit data with lt MOD gt carrier V 17 w
60. is probably set to off In this case issue the ATE command e When a command is successfully issued and accepted a modem responds with a Result Code Your modem supports both verbose result codes i e OK and numerical result codes i e O You can use the ATV command to set it one way or the other as follows ATVO Select numerical result code ATV1 Select verbose result code There are a few basic commands that do not require the AT command prefix These are as follows A Repeats the last issued AT command once A AV gt Repeats the last issued AT command once or re dials the last dialed number up to 9 times until a key is pressed or a connection is made pressed while modem is handshaking Escape code sequence Entered while the modem is in Data Mode Returns modem to Command Mode Your modem supports several groups of AT commands AT Command Set Type Example Basic AT Hayes compatible ATBO Basic ATS on line help Extended AT amp commands AT amp NO Extended AT commands AT I1 Fax AT commands AT FCLASS 2 20 Basic Modem Operation AT Command Set Type S Register command ATSO 1 S Register bit mapped command sets ATS13 1 1 Register bit 1 equal to 1 S Register inquiry command ATSO Or ATS13 1 You may browse the lists of available commands for each command set by using the on line help commands AT AT AT amp and ATS Further detail on AT
61. is done with the command AT Wab Local user profile number Local active configuration Local factory default Remote user profile number 42 Special Functions The remote profile read and write commands Rab and Wab only work in the on line condition The connection speed and mode do not matter The remote modem must be set to accept remote configuration by executing the AT F1 command The AT F0 command will set the modem up to deny remote configuration requests Because the modem uses the remote digital loopback mode to request remote configuration information the remote digital loopback request must also be granted AT amp T4 on the remote modem to accept the remote configuration request Batch mode remote configuration is a convenient feature allowing you to pre configure a remote modem in one of the local modem s user profiles and send it to the remote modem in one action It is particularly useful when there are many remote modems and a set of standard configurations is available so you can store them into user profiles You just need to configure the remote modem into one of the standard configurations by activating the remote configuration once Caller Number Delivery Caller ID Caller Number Delivery CND commonly called Caller ID is a new kind of phone service that may be offered by your local phone company Check your phone company for availability You must subscribe to it and usually pay an additional monthl
62. l answer the phone and play a voice message At this moment the modem having detected the ring signal is gone will start to listen to the line for CNG tone or DTMF tones If the remote caller is an unattended fax machine it will send a CNG tone for a period of time The modem will detect the CNG tone and report RING to the software immediately The software application can then issue commands to answer the call and receive the fax If the remote caller is using a fax phone which does not send out a CNG tone and is waiting for a fax answer tone in order 48 Special Functions to press the START button the caller can press a designated DTMF tone which will activate the modem to report and subsequently be ordered to answer the fax call Setting Up EDR The new EDR can be used at home where multiple phones are installed in parallel Once this function is enabled the modem will go into EDR mode after the ring disappears and it will be able to detect the data fax CNG tone and DTMF tones and report them as different types of rings The EDR settings are defined in S register S51 S51 Bit mapped register default 0 Bits Bin Dec Description 7 6 Disable data CNG tone detection default 5 4 00 0 Disable Fax CNG tone detection default 3 2 00 0 Disable DTMF tone detection default ete Report RING lt DTMF gt for a DTMF tone 1 0 00 0 Disable EDR default Special Functions 49
63. latile RAM at location n use to dial two consecutive numbers for bundling or MPPP calls keyboard commands 0 1 0 1 n On off hook control eel ee up on hook the modem or x x ISDN same as ATH i a Off hook the modem Display inquired information DL DSn En Hn In I Display numerical product code same as ATT I I 0 1 Display product information and ROM checksum 2 12 Display modem link status report 78 AT Command Set Summaries Options Function amp Description _ ___ Ref 112 Display physical layer status 4 the value the higher the volume Speaker control 21 1 2 peaker always OFF peaker ON until call is answered peaker always ON 0 n n Speaker ON after the last digit is dialed out and OFF when carrier is detected n 1 n Return to on line state Force modem to request a retrain __ Result code displayed 823 7_ Qo_ Modem returns result code but quiet S40 1 after answering on a RING see also 42 2 Sr b n Set bit b of S register r to value n N n 0 7 Ring volume control NO will 24 0 2 5 disable the audio ring function pa n is a binary digit 0 or T Display value of bit b of S register ok a r Sr Set S register r to value n n must be a decimal number between 0 and 255 E ee i t mmand n Display value stored in S register r E E Download firmware t
64. le into the modem s transmitter and is modulated to an analog signal Then it is looped back to the receiver demodulated to digital form and sent through the RS 232 cable back to the terminal or computer s screen You can tell if anything is wrong by looking at the screen The screen should show the data you have sent to the modem This test can only be initiated while the modem is off line Analog Loopback with Self test AT amp TS8 This test generates data from the modem itself instead of input data from the RS 232 interface The data will go through the same path as it would with the Analog Loopback Test In asynchronous mode the pattern consists of printable ASCII characters You can see the result on the screen In the synchronous mode the pattern is made up of scrambled binary and the Throughput Meter will change to a Bit Error Rate Meter The left reader displays accumulated bit errors while the right reader displays accumulated bits sent This test can only be initiated when the modem is off line Local Digital Loopback Test AT amp T3 This test will loopback the digital form data demodulated from the receiver to the input of the transmitter During testing all data 118 Diagnostics amp Troubleshooting received from the remote modem will be returned to the remote modem This test is applicable when the remote modem does not provide V 54 Remote Digital Loopback capability This test can be initiated by the local modem when th
65. lephone directory for information on disabling Call Waiting 130 Diagnostics amp Troubleshooting 11 Upgrading Your Modem Upgrading by Flash EPROM 1 Obtain the new firmware by downloading from the ZyXEL BBS WWW or FTP site See Contacting ZyXEL on page vi for instructions Turn on your computer 3 Turn on your modem Start any communications program that supports the XModem protocol Type ATUPX lt enter gt Press Enter and wait for the following prompt characters You have chosen XMODEM 128 bytes data with checksum protocol to update your modem Data in Flash ROM will be erased Are you sure Y N Press Y The following message then appears Start programming please upload Wait for the following prompt characters SSS Use the XModem protocol to upload the file to your modem This step updates the modem s flash EPROM with the latest firmware Upgrading Your Modem 131 10 When the installation is complete the modem restarts automatically Kernel Recovery Mode Your modem is equipped with ZyXEL s exclusive Kernel Recovery Mode This unique feature enables quick recovery from failed flash uploads With other modems a failed flash upload usually results in the user having to return the modem to the factory for repair In the unlikely event that your modem fails to respond to AT commands after upgrading the flash EPROM 1 Turn off the modem 2 Press and hold down
66. line for rings Leased Line Operation 37 The originating modem will try to dial the number up to nine times or until a 3 minute time out is activated If the dial backup attempt fails the originating modem will go back to try the leased line connection If this fails it will try the dial up line again It will try these two alternatives indefinitely If the dial backup attempt succeeds the value of S register S34 determines the interval of the dial backup connection before going back to check the leased line AT Command ATS34 0 The dial backup line continues to be used indefinitely ATS34 n Retries leased line after n minutes If the leased 1 lt n lt 255 line has still not been recovered the modem will default 30 continue to use the dial backup line Aborting from Leased Line Operation If the leased line has not been connected pressing any key on the RS 1612 LCD control panel will abort the attempt to connect to the leased line If dial backup is enabled backup action will be taken Pressing any key again will abort the backup action and revert to the IDLE SCREEN display Terminating a Leased Line Connection Disconnecting the leased line manually will force your modem to switch to the IDLE SCREEN Either going on line manually or if you have set the leased line as the power on default turning the power OFF and ON will make the modem try the leased line again 38 Leased Line Operation 6 Special Functions
67. ling Problems 129 Data Transfer Problems 130 Connect Problems 130 11 Upgrading Your Modem 131 Upgrading by Flash EPROM 131 Kernel Recovery Mode 132 xi 12 Terminal Pinouts 133 Terminal Blocks 133 PC Serial Port Pinouts 134 Macintosh Serial Port Pinouts 135 13 Index 137 xii 1 Introduction What This Manual Covers Congratulations on the purchase of your U 336R RE modem one of ZyXEL s premier high performance products The U 336R RE modem cards are world renown for their ability to maintain ultra high speeds and clear quality connections while communicating around the globe Modem Features No other 33 6 Kbps modem gives you so much for so little Your modem is equipped with an array of standard and Intelligent features designed to make your data communications faster easier and more convenient Standard Features e Supports V 34 for 28 800bps and is backwards compatible e Operates in all environments including Windows 95 DOS Windows Macintosh OS 2 UNIX Novell Amiga and IBM AS400 RS6000 e V 42 and MNP 4 3 error correction e V 42bis and MNP 5 data compression e DTE serial interface with speeds up to 460 8Kbps Introduction 1 2 Introduction 14 LED indicators RE RD 15 LED indicators R Extended AT command set with V 25bis Operates on 2 wire dial up or 2 wire leased line RE Operates on 2 wire dial up or 2 4 wire leased line R Intelligent Features Automatic data and fax call
68. nction amp Description ___ Ref omp nomm DTE DCE e a E See also 44 6 See also S18 S20 and 44 6 Carrier Detect CD options S214 amp CO _ CD always ON See also 42 7 oll aoe also 38 3 S42 7 See also S25 amp B amp B amp C amp C 0 1 0 1 amp DO Ignore DTR signal assume DTR is always ON amp D1 108 1 DTR OFF ON transition causes dial of the default number See also AT Dn and S48 4 amp D2 108 2 Data Terminal Ready DTR OFF causes the modem to hang up AT Command Set Summaries 83 Command Options Function amp Description amp D3 Same as amp D2 but DTR OFF causes the modem to hang up and reset from profile 0 amp F Load factory settings to RAM as active configuration i Guard tone options Canada Data flow control DTE DCE amp II F 28 4 5 amp HO Flow control disabled amp H3 Hardware CTS RTS flow control S S27 3 5 S Type of Phone line ingle phone line RJ11 RJ12 RJ13 compression amp 28 0 amp amp K1 MNPF4 See also 41 0 MNP4 MNPS5 See also 38 5 S41 0 G2 HO H4 JO KO K1 K2 V 42 MNP4 1 T Dial up line S14 2 3 2W leased line 4W leased line Synchronous asynchronous mode 14 6 7 selection amp MO Asynchronous mode with data amp K4 V 424 V 42bis compatible with amp K2 See also 38 5 84 AT Command Set Summaries amp Nn buffering o im synchro
69. nd call back ZyXEL to ZyXEL only Enable type 2 security with password check password check and call back Enable type 2 security with password check and call back remote user enters the call back Ramee type 2 security with n 0 49 Modify user password table at location n 17 6 7 Leased line auto handshake mode 14 0 selection Set to Originate mode Ls dl n Nn ow nN nN Fn Gn Hn HS Modify supervisory password Default ZyXEL In O Mn 90 AT Command Set Summaries a ai a 0 3 b 4 Remote active configuration 5 Remote factory default ia e D Recall the last CND Caller ID information View the Password table Oooo Write local configuration profile a S36 to remote user profile b and reset fos modem from profile b la 4__ Local active configuration a 5__ Local factory default configuration __ b 0 3 Remote user profile number b 37 0 3 36 1 The AT F commands are located in the chapter 7 9 Status Registers amp Result Codes S Register Descriptions In most bit mapped S registers the default bit value is 0 Non 0 default values are followed by an asterisk In some cases default values are shown in the reference column preceded by Some bits are reserved for factory use and should not be changed Basic S Registers ATSn x Function amp Description will answer O value disable auto answer incoming call Def
70. nector for the desired modem Hooking Up Power Connecting power should be the last thing you do before using the rack To connect power follow the instructions below l Ze 3 Plug one end of the power cord to the socket on the back panel Plug the other end to a properly rated power source Switch the power source selector to AC or DC according to the type of power supply s you are using Make sure all other hardware installations are complete 5 Unscrew the front panel and turn on one or both power 6 7 supply s Replace the front panel Turn on the master power Fax Modem Communication Software Installation After completing installation of your modem use the following procedures to verify your modem connections Install and load your communications software If you need assistance refer to the manual that came with the software If your communications software requires you to select a modem and the your modem is not one of the choices you can either check our web site for the driver or select the ZyXEL U Installation 11 1496 modem In many cases the commands for these modems are identical Select the following communication settings Databits 8 FONOTE WHEN SPECIFYING A PORT ASSIGNMENT THE N INDICATES THE COMPUTER SERIAL PORT TO WHICH YOUR MODEM IS ATTACHED FOR EXAMPLE IF YOUR MODEM IS CONNECTED TO SERIAL PORT 2 YOU WOULD SELECT COM2 3 12 Installation Place your c
71. nous data buffering Options Function amp Description Synchronous mode S19 iocemcey se sho 843 7 548 0 DCE DCE See also 43 7 S48 1 amp NO Multi Auto auto negotiate highest possible link rate V 34 ZyX 19200 ZyX16800 V 32bis V 32 V 22bis V 22 and Bell 212A G3 Fax V 17 V 29 V 27ter and cellular modes See also 38 4 43 0 43 1 S43 3 and 48 5 i si ll M wire leased line only linen leased line only a O ai V 32 9600T 9600 7200T 4800 V 32 9600 7200 4800 leased lines only leased lines only leased lines only fo e ed leased lines only leased lines only AT Command Set Summaries 85 amp amp amp amp amp amp amp amp amp I amp N5 V 32 4800 N9 N1 Ee ee 2400 models with 4 wire 4 leased lines only amp N12 V 23 1200 75 See also S48b3 Lod gases eya OUP Bec alee S3 ___ eee N16 V 21300 o o amp N17 V 32bis 14400 12000 9600 7200 4800 amp N18 V 32bis 12000 9600 7200 4800 amp N19 V 32bis 7200 4800 Coat ee amp N32 G3 Fax V 17 V 29 V 27ter 14400 12000 9600 7200 4800 2400 See also 42 4 a eaa amp N36 ZyXEL 14400 amp N37 ZyXEL 12000 amp N38 ZyXEL 9600 amp N39 ZyXEL 7200 amp N42 CELL 14400 amp N43 CELL 12000 amp N44 CELL9600 d amp N45 CELL7200 amp N46 CELL 4800T_ I amp NO2_ V 3428800 I amp N63 V 34 26400 amp N64 v 34 24000 o amp N65 _ v
72. o the Flash EPROM by using Xmodem protocol AT Command Set Summaries 79 Function amp Description Sets display type for Result Codes S23 6 Display result code in numeric form See also 35 7 and the result code table of ATXn Display result code in verbose form Z Reset modem and load user profile n 0 3 Z Reset modem and load factory settings S Basic command summary help Extended AT amp command summary help an Extended AT command summary help Description of ATI2 Output The Link Status Report output appears as follows ZyXEL U MODEM LINK STATUS REPORT Vn Xn Zn amp VO n 0 7 Result code options see the Options S23 3 57 Table n 0 4 Reset modem and set power on 15 5 profile 4 Chars Sent 2420 Chars Received 2420 Octets Sent 950 Octets Received 950 Blocks Sent 1 3 Blocks Received 13 Blocks Resent 0 80 AT Command Set Summaries Max Outstanding 8 Max Block Size 256 Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Errors 0 Round Trip Delay 10 Xmitter Underrun 0 Receiver Overrun 0 Last Speed Protocol Connect 14400 ARQ V42b Disconnect Reason Local Hangup Formatted as 7 E 1 or 7 0 1 or 8 N 1 etc Octets Data received from or sent to remote modem in error control mode Compressed if data compression was enabled Block Framed Octets Delimited by th
73. olumn Result Code Options ATXn Result Code Option Table The following table shows the different options available when setting the ATXn command The default value for n is 5 when your modem is shipped o ok COV VO VO 3 INOCARRIER _ V_ V_ V_ v_ V_WV_W_ lv 5 CONNECT 1200 j je fs p 6e NODIALTONE v Vv Vv W v _ 7 Burs Tl VV WV s INOANSWER_ VV VV v _ 9 RINGING v VV VV 10 CONNECT 2400 j je s p 11 CONNECT 4800 j je s p 12 _ CONNECT9600 j je fs p 14 _ CONNECT 19200 j je fs p 15 CONNECT 7200 j je fs p 16 CONNECT 12000 j je p 17 _ CONNECT 14400 j je s p 18 CONNECT 16800 j je p 19 CONNECT 38400 le Status Registers amp Result Codes 111 20 CONNECT 57600 je 21 CONNECT 76800 je 22 CONNECT 115200 j je 23 CONNECT 230400 je 24 _ CONNECT 460800 j je 25 CONNECT 921600 je 26 _ CONNECT 307200 j je 27 _ CONNECT 153600 je 28 _ CONNECT 102400 je 29 CONNECT 61440 je 30 CONNECT 51200 je 31 CONNECT 624000 je 32 __ CONNECT 124800 je 33 CONNECT 62400 je
74. ommunications software in terminal or direct connect mode your communications software manual will explain how Look at the modem s front panel and verify the DTR LED is ON If this LED is OFF your communications software is not addressing your modem at the correct COM port Make sure your software is set up for the same COM port to which your modem is connected Type AT and press the Enter key You should see the AT characters you typed followed by an OK result code If you do not see an OK result code turn the modem off and on then repeat this step If you still cannot see the characters refer to Chapter 0 for troubleshooting suggestions Type ATDT number and press Enter where number is your modem s telephone number You should see a BUSY result code If you do not see a BUSY result code refer to Chapter 10 for troubleshooting suggestions Installation 13 14 Installation 3 Basic Modem Operation This chapter covers the basic commands and techniques involved in modem operation In many cases this is the only information you will need in order to get up and running with communication software and to start making connections with your modem Understanding AT Commands The U 336R RE communicates asynchronously with computers using AT commands AT commands are used to configure and control your modem Commands are usually sent to the modem by way of communication software but can also be entered manually by the user
75. options you can choose from to define how the modem will operate in the command state AT amp M1 The modem accepts asynchronous commands in command state but exchanges data synchronously in data state AT amp M3 The modem accepts synchronous command V 25bis and exchanges data synchronously with a remote modem Dialing from Synchronous Mode 1 Dial from the terminal using asynchronous commands Set amp M1 and use asynchronous AT commands to dial the number Once the modem is connected the modem will enter synchronous operation Dial through the computer using V 25bis commands Some communication software packages on synchronous computers can dial using V 25bis synchronous commands In this case set amp M3 and I1 and the modem will accept V 25bis commands and make a synchronous connection Using DTR to dial a stored number in synchronous mode Store the telephone number by the asynchronous command amp Zn Use the DEFAULT DIAL parameter menu or Dn command to select the default dial pointer Set amp D1 and either amp M1 or amp M3 then raise DTR from your terminal or communication software The modem will dial the default stored number After the modem is connected the modem will enter synchronous operation 32 Synchronous Mode Operation 4 Manual dial Set the modem to synchronous mode amp M1 or amp M3 then dial a number from a telephone set When you hear the answer tone type ATD if amp M1 is s
76. or informational purposes only Trademarks are properties of their respective owners FCC Part 15 Information This device complies with Part 15 of FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference 2 This device must accept any interference received including interference that may cause undesired operations This equipment has been tested and found to comply with the limits fora CLASS A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a commercial environment This equipment generates uses and can radiate radio frequency energy iii and if not installed and used in accordance with the instructions may cause harmful interference to radio communications If this equipment does cause harmful interference to radio television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Changes or modifications not expressly approved by the party responsible for compliance c
77. originate or answer mode Auto Handshake If you want handshaking to occur automatically upon power up you have to save the leased line configuration to the power on profile Remember to set the handshake mode before you save the 36 Leased Line Operation configuration Be sure that one modem is set to originate mode and the other to answer mode AT Command AT MO When operating over a leased line modem will handshake in originate mode Default AT M1 When operating over a leased line modem will handshake in answer mode Leased Line Dial Backup When a leased line connection fails the following actions may be taken by the modem e Reattempt to connect on the leased line indefinitely if the dial backup option is disabled e If the dial backup is enabled the originating modem attempts to dial a pre stored telephone number to backup the connection the answering modem will reattempt to connect to the leased line and monitor the dial up line for rings Incoming dial backup calls will be answered Dial Backup The dial backup option can be set by issuing an asynchronous AT command from the terminal or by using the RS 1612 LCD control panel AT Command Description AT BO Leased line dial backup disabled Default AT B1 50 When the leased line cannot continue operation the originate mode modem will automatically dial the number stored in the memory address selected The answer mode modem will monitor the dial up
78. ould void the user s authority to operate the equipment Shielded RS 232 cables are required to be used to ensure compliance with FCC Part 15 and it is the responsibility of the user to provide and use shielded RS 232 cables Information for Canadian Users The Industry Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operation and safety requirements The Industry Canada does not guarantee that the equipment will operate to a user s satisfaction Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly The customer should be aware that the compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment For their own protection users should ensure that the electrical ground connections of
79. phone jack e Available AC wall outlet e Telephone line from your telephone company dial up or leased line e Data and fax communication software Becoming a Registered Owner Complete the pre addressed Warranty Registration Card and place it in the mail Registered owners will receive future product information and update announcements Warranty registration is not necessary for product repair or replacement Also save your dated invoice as proof of purchase Introduction 5 6 Introduction 2 Installation This chapter covers the steps required to install your U 336R RE modem into a ZyXEL RS 1612 rack system A separate comprehensive manual containing rack system information is included with your modem rack chassis U 336R RE Modem Card The U 336R front panel consists of fifteen LED indicators and two switches The U 336RE front panel consists of fourteen LED indicators and two switches The LEDs on the front panel display the current status and configuration of the modem Refer to the following table for details on the LED status indicators and their meaning i eae rie and operational ee mode V34 V 34 Mode The modem is The modem is Indicator operating in V 34 in mode Handshaking state Installation 7 Transmit The DTE is sending Indicator data to modem for transmission Receive The modem is Indicator sending received data to the DTE Carrier Detect The modem senses a valid data carrier on
80. r ZyXEL product or desire assistance contact ZyXEL Communications Corporation in one of the following ways Phone In North America call between 8 00 AM and 5 00 PM PST at 714 693 0808 Outside North America you can dial 886 3 5783942 EXT 252 between 8 00AM and 5 00PM Taiwan time GMT 8 00 Fax ZyXEL in North America 714 693 8811 or Taiwan 886 3 5782439 E mail e Sales inquiries sales zyxel com in North America sales zyxel hinet net outside North America e Technical support support zyxel com in North America support zyxel hinet net outside North America Product information Visit our site on the World Wide Web http www zyxel com FTP Information such as ZyXEL software and ROM updates for North America can be found at this FTP address ftp zyxel com For European and Asian versions and related files use the address ftp zyxel co at Postal Service You can send written communications to the following address ZyXEL Communications Corporation 6 Innovation Road II Science Based Industrial Park Hsinchu Taiwan 300 R O C or ZyXEL Communications Inc 4920 E La Palma Avenue Anaheim CA92807 U S A vii Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 What This Manual Covers 1 Modem Features 1 Standard Features 1 Intelligent Features 2 Fax Compatibility 3 Technical Specifications 3 Unpacking Your
81. ry fails the modem will continuously recycle the handshaking procedure until the S7 register times out 2 4 4 Enable data calling tone CNG sending 3 Reverse the V 23 channel speed Originate mode modem speed Send Receive 1200 75 Answer mode modem speed Send Receive 75 1200 Status Registers amp Result Codes 107 ee v 10 Work with amp D1 command DTR ON will have the modem dial the default number and DTR OFF will have the modem hang up and reset to profile 0 When the modem is idle waiting for command it will not dial any number when DTR changes from ON to OFF i 15 F Set cellular mode transmit power level 9 to 24 dBm See also S43b2 For cellular mode only Modem is installed in office For cellular mode only Modem is connected to a 0 0 FF The nodem counts when 255 there is no data flow in or out of the RS 232 serial port A connection is disengaged when the counter reaches the preset value Set value 0 to disable this function Bit Eppe eee register 108 Status Registers amp Result Codes unction and description Ref eports RING twice RING four times RING six times Disables DTMF tone Reports RING for a DTMF JEJE Q 3S fo O o eal os 5 Reports RING DTMF for Disables fax CNG tone detection Default Reports RING for fax CNG S 2J A az LIT aj 5 o 5 L 0 Reports RING 1 for fax CNG ton
82. s fine st 7 FDCS vr br wd Current session parameter refer to In df ec bf st FDCC command Current session negotiation parameter n df ec bf st refer to FDCC command Receive phase C data command initiates document reception FDT df vr wd Transmit phase C data command In release the DCE to proceed with negotiation End of page or document command 0 More pages same document n 1 End of document another document follows No more pages or documents follows another document follows Procedure interrupt end of document Fax Operation 59 HFK Regular fax abort command FLID string Local ID string parameter FLO n __ Flow control options n 1 Set XON XOFF software flow control Set CTS RTS hardware flow control FLPL n for polling G polling Request DCE model Request DCE manufacturer FMDL FMFR II uli N FMINSP n Minimum phase C speed parameter n 3 n 4 5 14400 bps FPHCTO 0 255 DTE Phase C response time out n lt value gt Determine how long the DCE will wait for a command after reaching the end of data when transmitting in Phase C lt value gt 0 to 255 100 ms units 2__ Page bad retrain requested Page bad procedure interrupt requested Tah lit W P n 60 Fax Operation Value n 5 Page good procedure interrupt requested FREL n Phase C received EOL alignment n 0 The EOL patterns
83. s 0 Round Trip Delay 10 Xmitter Underrun 0 Receiver Overrun 0 Last Speed Protocol Connect 14400 ARQ V42b Disconnect Reason Local Hangup This Link Status Report is very helpful in finding the link condition and identifying problems with the link Following are explanations for each item and the terminology used above Chars Data characters transmitted between the DTE computer terminal and the modem Octets Data bytes transmitted between the modems handled by error control protocol may be compressed data Data compression efficiency may be seen from the ratio of chars count to octets count Block Framed octets transmitted between error control protocols of the two modems Chars Sent Characters sent from the DTE to the modem for transmission Diagnostics amp Troubleshooting 123 Chars Received Characters received by the modem from the line and sent to the DTE Octets Sent Data bytes sent to the remote modem Octets Received Data bytes received from the remote modem Blocks Sent Blocks sent to the remote modem Blocks Received Blocks received from the remote modem Blocks Resent Number of blocks resent because of error If there are too many resends it may be a bad line or protocol incompatibility Max Outstanding Error control protocol parameter The maximum allowable number of blocks sent or received without acknowledgment Max Block Size Error control protocol parameter The maxim
84. sponds with a three digit character showing the value of this register followed by OK A value of 002 for example means your modem will auto answer incoming calls after the second ring Some S registers are bit mapped For these registers you can use the Sr b command to read their values For example to read the value of S register S35 bit 7 type ATS35 7 and press Enter The modem responds with an appropriate value followed by OK Changing S Register Values You can use the ATSO n command to change the value of an S register For example to have your modem auto answer an incoming call after two rings set S register 0 to 2 Be sure the n value is between 1 and 255 If n is set to 0 your modem will not answer incoming calls 22 Basic Modem Operation Non Volatile Memory NOTE Your modem has an amount of memory set aside for storing user information such as frequently used phone numbers and default command settings The latter is particularly useful when using your modem to call a variety of different locations that require different settings For this reason your modem provides a number of user Profiles that can be accessed through simple AT commands This section covers the topics of storing phone numbers and saving default settings in the power on profile Storing Phone Numbers The AT command to store a phone number is in the format AT amp Zs n The s is a number from 0 to 49 that represents the locat
85. st 7200 Required for FTM amp FRM v29 o O 9600 Required for FTM amp FRM Required for FTM amp FRM 98 V 17 wist 9600 Required for FTM amp FRM w st means with V 17 short training Class 2 Command Set The following Class 2 commands are supported and implemented per TIA PN2388 8 20 90 56 Fax Operation Description Execute a command or set a parameter Read permissible settings Read current setting FBADLIN Bad line threshold number of lt value gt consecutive bad lines for a bad page parameter Determine if Copy Quality OK on the FBOR FBUF Buffer size read only parameter Allow DTE to determine the T 30 flow chart lt value gt 0 to 255 a value of 0 implies that error checking is disabled FCIG string FCLASS n DCE responds fax connection Copy quality check capability Fax Operation 57 parameter ooo __ Capability to receive parameter poll a remote device remote device ln df ec bf st Vertical resolution Normal 98 Ipi Vertical resolution Fine 196 Ipi Bit rate 2400 bit s V 27ter Bit rate 7200 bit s V 29 or V 17 Page width 2048 pixels in 255mm modified Huffman modified Read 58 Fax Operation Command Value Description _ _ 0 t 0 t 1 st Minimum scan time line 10 ms normal 5 ms fine st 3 normal 10ms fine st 5 Minimum scan time line 20 ms st 6 Minimum scan time line 40 ms normal 20m
86. state to command state type the escape sequence code To return to the data state type ATO and press Enter Problem You typed an AT command but did not receive an OK or 0 result code Solutions 1 Your communications software may be using a different COM port than your modem Be sure both the software and your modem are addressing the same COM port 2 The EO and Q1 commands may be in effect disabling echo and result codes To verify this in terminal mode type AT amp VO and press Enter with the modem in command state to view the currently active settings To enable echo and result codes type AT E1 QO and press Enter You may have typed the commands when your modem was in the data state instead of the command state To switch from data state to command state type the escape sequence code To return to data state type ATO and press Enter Diagnostics amp Troubleshooting 127 Problem You receive the ERROR result code after typing an AT command Solution You may have typed a command that is not recognized by your modem or communications software Command Echo Problems Problem You do not see any typed characters on your computer screen Solutions 1 Make sure the DTR LED is ON If it is OFF make sure your communications software is using the same COM port as your modem 2 Neither your modem nor your communications software is configured to echo characters Use the E1 command to enable modem echo or turn
87. t Codes 105 Command bit_ dec_ hex Function and description Ref between off hook and modem answering 7 128 Modem hang up if the line condition does not permit modem to run highest speed set by amp Nn command S44 3 ATDSn initiates auto dial of DSn the stored numbers consecutively until connection is made DSR follows DTR see also amp S1 S41 5 Enable V 13 half duplex simulation in synchronous When selected with amp BO DTE speed fixed at 38400 when the link speed is above 9600 DTE speed fixed at 9600 if link speed is 7200 DTE speed follows link speed When selected with amp B1 DTE speed fixed at current rate when an ARQ connection is made when a non ARQ connection is made DTE speed follows the link speed See also Enable UK Australian Singapore Indian etc type short to short 106 Status Registers amp Result Codes Command bit_ dec_ hex Function and description _ Ref discontinuous ring back detection S45 hex Delay during which the 0 FF CND silence detection is disabled in 20 ms units See also S46 CND silence detection interval 0Q __ 0 FF To process the CND silence 255 must be detected for the specified interval in 20 ms units Bit mapped register 000 Cause CND information to be reported in raw format Enable DATA ONLY mode Auto detect V 34 ZyX V 32bis V 22bis V 23 V 21 Bell 103 when answering If the connection t
88. tandard frames are reported FTI FCI and FPI response reports are generated nsr 0 Non standard frames are not reported FTI FCI and FPI response reports 1 FNS string Non standard byte string parameter string string of hexadecimal coded E octets m Local fax station ID string for polling FPI string Rx FPR n n 0 Automatic DTE rate detection by the DCE n gt 0 Serial rate is fixed at the value multiplied by 2400 bps For example when n 8 the DTE rate is equal to 19200 bps 8x2400 FPS n Page transfer status refer to the FPTS Class 2 command in previous sections for settings FRQ pgl cbl ooo Receiving quality threshold parameters Specify the percentage of good lines e g 66 Fax Operation Command with negotiated number of pixels required for a page considered acceptable The percentage of good lines would be computed by the equation 100 x lt lc gt lt bl gt lt c gt Ic total line count as reported in the FPS response bl bad line count as reported in the FPS response If the resulting value is less than the value in lt pgl gt the page is unacceptable Specify the maximum tolerable number of consecutive bad lines If this value is exceeded for a given page the DCE shall consider the page unacceptable Disable polling Enable polling FSP n Enable polling command n ing Class 2 0 Command Responses Function and Description FC
89. tection Enables type 2 ring detection Enables type 3 ring detection Enables type 4 ring detection BIA o aa see also 27 0 38 5 Disable retrain abort up to 5 S27 6 min for special satellite line n condition Enable CCITT signals 140 and 141 on EJA 232D interface In X2 X7 setting modem waits for S6 seconds before dialing and ignores dial tone detection so DSR follows DCD and pulses for 0 5 sec DCD on off transition 6 64 J40 Force S0 gt 2 S 104 Status Registers amp Result Codes d 1 Function and description Ignore calling tone not to be used as fax detection ex Enables throughput averaging hex M 4 CND message will be forced on even if ATO2 is set Command bit 7 ef S 42 e 000 Disable escape sequence code in answer mode 10 Disable V 17 14 400 Fax in calling mode no effect to answering mode amp N32 eee RINGING result n code DCD forced on but pulse off amp CO for 0 5 seconds at carrier loss hex Bit mapped register Multi Auto mode Multi Auto mode Disable cellular mode automatic transmit power adjustment see also S49b0 3 Enable cellular mode in amp NO Multi Auto mode ec 28 C 16 2 4 28 ec 1 2 4 bit 1 2 4 3 4 5 7 1 bit jd 1 2 4 3 Disable cellular mode in amp NO Multi Auto 64 40 Enable 1 5 sec pause iS lisa bit dec Pale 5 62 a E 6 l6 Status Registers amp Resul
90. the hour and mm is the minute of the time and CALLER_ID is the phone number of the caller or CALLER_NM his her name The following is an example of a caller ID message as it might appear on your screen RING TIME 04 28 12 30 CALLER NUMBER 7135551414 or CALLER NAME 44 Special Functions Brent Harper RING In the multiple message format if the caller s number and name are available the ring message will display both RING TIME MM DD hh mm CALLER NUMBER lt Caller_ID gt CALLER NAME lt Caller_Name gt RING Here is an example RING TIME 04 28 12 30 CALLER NUMBER 7135551414 CALLER NAME Jordan Chu RING If the caller number and name are not available the ring message will appear as follows RING TIME 04 28 12 30 REASON FOR NO NUMBER OUT_OF_AREA REASON FOR NO NAME PRIVACY RING The last CND message that the modem received can be displayed by using the AT T command Setting 48 0 1 will cause the modem to report CND information in its ASCII coded hexadecimal raw data format The DTE software is responsible for explaining the data Special Functions 45 RoNOTE PLEASE REFER TO THE BELLCORE TECHNICAL ADVISORY DOCUMENT TR NWT 000030 FOR THE EXACT DATA FORMAT THE ABOVE CALLER ID SCHEME APPLIES TO THE NORTH AMERICA ONLY DIFFERENT COUNTRIES MAY EMPLOY DIFFERENT CALLER ID SCHEMES MAKE SURE THE SCHEME USED IN YOUR COUNTRY IS SUPPORTED BEFORE USING TH
91. the line Data Terminal The attached Ready computer is ready to send or receive data Data Set Ready The modem is ready to send or receive data Request to Send The DTE requests to send data for transmission Clear to Send The modem is able to accept data for transmission Off Hook The modem is in Indicator Data Mode or Off Hook Indicator Originate Mode RI Ring Indicator Modem is in Auto Modem Answer mode detected an incoming call 8 Installation FONOTE Blinking Signal Quality Modem senses a Modem good quality signal senses marginal signal quality The following LED is for the U 336R only Blinking LL Leased Line Modem is in Leased Mode Indicator Line Mode There are two toggle switches on the U 336R RE front panel VOICE DATA Toggles the modem on line off hook DATA or off line on hook VOICE mode the telephone set is connected to the line ANS ORG switches the modem between ANSWER and ORIGINATE modes when the modem goes off hook THE ANS ORG SWITCH ONLY DETERMINES MODEM ON LINE MODES WHEN THE MODEM IS SET TO OFF HOOK MANUALLY IF ATD OR ATA COMMANDS TAKE THE MODEM OFF HOOK THOSE COMMANDS WILL DETERMINE THE OPERATING MODE FOR THE MODEM TOO Required Steps for U 336R RE Installation Setting up the rack system consists of plugging in modem cards connecting phone lines connecting to computers and connecting power Refer to your rack system User s Guide for details
92. this test purpose do not enter a phone number simply choose the COM port your modem is connected to from the Connect Using list Click OK when finished The next window sets the COM port settings The settings used for your modem should be as follows Bits per second 57600 Databitss 8 Flow Control Click OK when finished After you have done this save your new connection by selecting Save from the File menu and click OK A new connection icon will be added to your Hyper Terminal folder You are now ready to start entering AT commands In the terminal window type AT lt Enter gt 16 Basic Modem Operation Your modem responds OK This confirms that the modem and your computer are communicating correctly To test the telephone line connection issue the manual answer command Type ATA lt Enter gt Your modem will pick up the phone line and try to communicate Normally this command is only used to answer an incoming call made from another modem thus the high pitched tone you will hear from the speaker To abort the operation press any key or select Disconnect from the Call menu Dialing and Answering Techniques NOTE Depending on what communications software you use to make modem connections you may not have as much control of how the modem dials the telephone number This section shows some useful examples of the AT commands used for dialing and answer
93. tion e Protocol Error e Break Timeout e DTR Dropped e Carrier Lost 1 No handshaking response e Carrier Lost 2 Remote hang up busy tone heard Trouble Shooting Your modem is designed to provide years of ultra high speed satisfaction In the unlikely event you encounter problems using your modem the tips in this section will help you to identify and resolve them Most modem problems are a result of incorrect cabling or settings within your communications or fax software This section provides a list of more common problems that you may encounter followed by likely solutions AT Command Set Problems Problem Your modem does not respond to AT commands Solutions 1 Make sure the DTR LED is ON If it is OFF make sure your communications software is using the same COM port as your modem 2 Check to see that your modem s COM port is not already assigned to another installed serial device such as a mouse or laser printer 126 Diagnostics amp Troubleshooting Problem Your modem fails to execute AT commands Solutions Make sure the DTR LED is ON If it is OFF make sure your communications software is using the same COM port as your modem 2 You may have omitted the characters AT from the beginning of the command line These characters must appear at the beginning of each command line 3 You may have typed the commands when your modem was in data state instead of the command state To switch from data
94. ts the current settings with the settings in profile n n 0 to 4 Profiles 0 to 3 User profiles Profile 4 Factory default profile Helpful Hints for PC Computers Most PCs are equipped with more than one serial port Standard cables are readily available from many suppliers Usually serial ports are manufactured in two forms either with a 25 pin male jack or a 9 pin male jack For high speed serial connections at 230 4Kbps or 460 8Kbps use a low capacitance cable Also keep the cable as short as possible The serial port is driven by interrupts Every interrupt needs a certain amount of overhead processing time Too many interrupts reduce the computer s efficiency The UART 16450 is very commonly used in serial port devices For every character byte received it generates an interrupt If your hardware allows it and if 24 Basic Modem Operation your software supports it replace the 16450 UART with a 16550 model This newer chip has an internal buffer and generates an interrupt for up to every 16 characters several trigger levels are available With this UART installed you may drive your serial port at 57600 bps and above While data is written from the transfer buffer to your hard disk characters may be lost at the serial port This is due to the fact that disk access interrupts have a higher priority than serial port interrupts If you are running at a high serial speed e g 230 4Kbps or 460 8Kbps on your PC b
95. um allowable number of octets in a block Actual block size can be smaller Retrains Requested Number of times the local modem has requested a retrain Each request is an indicator of bad receiving conditions Retrains Granted Number of times retrains requested by the remote modem were granted Link Duration Connection time in minutes 124 Diagnostics amp Troubleshooting T401 Timeouts and T402 Timeouts These are for the manufacturer checking link layer operation T401 and T402 are timers used in MNP4 or V 42 T402 will count when the modem is connected in the idle state with no data to transmit or receive FCS Errors Frame CheckSum Errors number of block errors A lot of FCS errors indicate a bad line Round Trip Delay Round trip delay between modems in T 1 2400 sec units Normally should be in the range of 0 100 A satellite link will introduce a delay of about 1300 T Xmitter Underrun Number of times the modem fails to provide data octet in time for transmission Receiver Overrun Number of times the modem fails to take data octet in time from receiver Last speed protocol The speed and protocol of the link before hang up It may be different from the initial speed because of retrain and speed fall back or fall forward Speed change is a clue to changing line conditions Disconnect Reason e Local Hang up e Remote Hang up e Carrier Lost e On Line Diagnostics amp Troubleshooting 125 e Resent Expira
96. with the computer keyboard Command statements must be written in a specific form in order for your modem to recognize them A command statement always begins with the letters AT or at It is then followed by one or more commands and the lt Enter gt key AT commands can only be issued when your modem is in command mode or off line Once your modem has established a connection with another modem it is said to be on line or in data mode In this mode the characters sent to your modem by your computer are transmitted to the remote modem rather than being interpreted by your modem as commands Using the Windows 95 Hyper Terminal Program In order to issue an AT command statement you first need to run a communication program such as Microsoft Windows Hyper Basic Modem Operation 15 Terminal program This program provides a simple method to manually enter AT commands so you can do such things as customize the settings of your modem or store commonly used phone numbers Once your modem is connected to your computer s serial port and telephone line open the Windows 95 Accessories program group and open the Hyper Terminal Program The program will prompt you for a name and Icon to use for your new connection Type the name Test Connection and press lt Enter gt Next you will be prompted for country information area code and phone number and the device used to make the connection For
97. x message of each page The modem detects the RTC signal automatically handshakes the multi page procedure with the remote facsimile and sends the next page The following flow control signaling is used while receiving a fax e CTS is not used when receiving fax e RTS is used to inform your modem that the computer cannot accept data at this moment The modem will not pass received data to the DTE if RTS is turned off When finished receiving the fax message your modem will turn off CD then send a status report result code to the DTE 74 Fax Operation Fax Reception from a BBS Your modem can automatically detect data and fax calls and allow BBS software to receive faxes on the same phone line To allow your BBS to receive incoming faxes make the following set up changes in your BBS 1 Add the string B1 FCLASS 6 to the init string Be sure the FCLASS 6 command is the last command 2 Change one of the messages in the list to CONNECT FAX Set the external mail string to ZyXEL and give it an error level 4 In your BBS batch file if the error level matches the external mail execute revfax 2 p comport w workpath This setting will enable the BBS to receive a fax and store it automatically The following is a sample setting for the Front Door system e Add these commands to the init string X7 B1 FCLASS 6 e Change the connection message to 300 CONNECT 4800 CONNECT 4800 1200 CONNECT 1200 9600 CONNECT 7200 12
98. y for phone number profile storage Diagnostics self test analog loopback with self test digital loopback and remote digital loopback with self test Dialing type tone pulse dialing Introduction 3 e Line interface 2 wire dial up or 2 wire leased line RE e Line interface 2 wire dial up or 2 4 wire leased line R e Call progress monitoring dial tone busy and ring back detection e Audio Monitor programmable volume control Unpacking Your Modem 4 Introduction Enclosed Equipment Before you proceed further please check all items you received with your modem against this list to make sure nothing is missing The complete package should include e One U 336R RE universal modem e One warranty registration card Contact your dealer or the store where you bought the modem if anything is missing Check the modem for shipping damages If you find any damage contact the shipping agency immediately Retain shipping and cushioning materials for future storage or shipping needs Please direct any additional questions about damaged or missing materials to your dealer or distributor or see page vi to contact ZyXEL Required Equipment In addition to the ZyXEL modem you just purchased you must have the following equipment to operate your modem e Computer terminal e Available PC serial port with a high speed 16550 UART e Standard straight through RS 232 cable pins 1 8 20 22 e Available tele
99. y service charge for this service With CND service the phone company s central office will send the coded caller information to the called station This information is sent once between the first and second rings Your modem can decode this caller information and present it to the connected computer terminal during the second ring period as part of the call progress ring message The modem will also report the Caller ID information if asked by the command AT T Special Functions 43 There are two kinds of caller information message formats sent by the phone company e One is the single message format which includes date time and caller ID e The other is the multiple message format which also includes the caller name as registered with the phone company The command ATS40 2 n is used to enable n 1 or disable n 0 the Caller ID detection function The default is disabled Enable it only when you have this service and want to enable its detection FONOTE THE CALLER ID MESSAGE MAY CAUSE SOME COMMUNICATION SOFTWARE TO BECOME CONFUSED IF YOU PLAN TO USE THE CALLER ID FEATURE BE SURE YOU ARE USING SOFTWARE THAT SUPPORTS IT SUCH AS ZF AX In single message format the modem will send a ring message to the terminal as follows RING TIME lt MM DD hh mm gt CALLER NUMBER lt CALLER_ID gt or CALLER NAME lt CALLER_NM gt RING MM is the two digit month message DD is the two digit date message hh is

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