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NT-IP manual

1. 8 4 1 1 Adding bandwidth The NT IP calculates the averages of transmit and receive traffic on the initial link in the last seconds or minutes as indicated by the ATKA command The NT IP then continuously compares these averages to the programmed add threshold When either the transmit or the receive average passes this threshold the NT IP attempts to establish a call for the additional link according to SVirhe Viitteen lahdetta ei loytynyt 8 4 1 2 Hemoving bandwidth The NT IP calculates the averages of transmit and receive traffic on the bundle in the last seconds or minutes as indicated by the ATKS command The NT IP then continuously compares these averages to the programmed subtract threshold When this threshold is passed the NT IP stops sending data packets on the additional link and it transmits a LCP Terminate Request to the access server on that link After receipt of the Terminate Ack the NT IP disconnects the B channel supporting that link If no Terminate Ack is received within 3 sec the Terminate Request is sent again In case of no response the link is assumed to be terminated anyway and the NT IP disconnects the channel 8 4 2 Call Bumping Call Bumping refers to the capability of the NT IP to drop the channel supporting the additional MP link and to use that channel when the user wants to place or to answer a voice call through a phone connected to one of the two a b ports The following command are related to C
2. aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 The local and remote PC based configuration modes support download of firmware upgrades A delay longer than 2 minutes between two subsequent operations will make the NT IP leave the configuration mode after executing any previously entered commands 4 2 Tone based configuration procedures 4 2 1 Local configuration Connect a DIMF phone to one a b port To enter the operator configuration mode disconnect any existing POTS or RS 232 call disconnect the line pair connect a DTMF phone to one of the a b port and lift the handset dial the access command sequence according to 4 2 3 To enter the user configuration mode disconnect any existing POTS or RS 232 call connect a DTMF phone to one of the a b port and lift the handset dial the access command sequence 4 2 2 Remote Configuration A call meeting the required conditions bearer service calling party number called subaddress is automatically answered by the NT IP provided there is at least one B channel available When the configuration call is answered and one B channel is in use the NT IP will not immediately affect global parameters and will not activate a new firmware release until all the a b and RS 232 ports have returned to an idle state The activation of port specific parameters is postponed until that port goes back to the idle state Please refer to 4 3 3 1 for the
3. BOOBOOROEE Or MOUDHDGOHBE 4 3 1 6 Enable local configuration This parameter can be used to disable local configuration The command 14 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 MECHEL disables any locally initiated configuration procedure 231 6 Hemote configuration numbers and subaddress Remote configuration numbers and subaddress are used to recognize remote configuration calls see 84 2 2 Up to 20 remote configuration numbers and one subaddress can be programmed into the NT IP These number should only be assigned during the installation As an example to assign the second remote configuration numbers to 21345 MUHBBBEBEE To program the subaddress to 9876 MEDBDBUDE 4 3 2 a b port Specific Parameters Separate commands are used for each a b port N 1 holds for the 1 a b port N 2 for the 2 a b port The value of some port specific parameters contain a sequence of digits Each digit holds the value of a specific sub parameter When entering a new value use 9 to skip a digit position without altering the current value of the sub parameter It is not necessary to update all digit positions in the dialling mode and a b port service parameters e g if only digit position 1 and 2 have to be modified then press after entering the two digits to terminate the command PARAMETER 1 network number U 2 network number 3 network number Port Stat
4. T reference point POTS ports pulse and or tone dialling ringing signal metering pulse generation PCM speech coder decoder according to G 711 A law generation of Calling Line ID messages available in emergency conditions mains off RS232 port nternet Access on a single B channel or on both B channels using the multilink PPP MP protocol Bandwidth on Demand BOD Bandwidth Allocation Protocol and Bandwidth Allocation Control Protocol BAP BACP Peer to peer communication according to ITU T V 120 and V 110 recommendations Enhanced AT command automatic bit rate recognition Maintenance local system and port configuration and diagnostics local and remote download of firmware upgrades 9759 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 2 SYSTEM OPERATION 2 1 Power Supply An external a c adapter generates low voltage power required for internal operation and to provide phantom power to the S bus When mains power is not available restricted power mode the NT IP uses the power fed by the ISDN exchange through the local loop to power the POTS ports In restricted power mode incoming calls are offered to both ports provided that the call is compatible with the profile assigned to each port but only one POTS port can be active at a time i e going off hook on one port automatically disables the other one No phantom power is supplied to
5. on hold 5 4 6 Call Pick up This service allows a user to pick up an incoming call ringing on the other a b port 32 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 5 4 6 1 User procedures This service must be enabled using position 3 of register 51 for port 1 and 52 for port 2 This register is reserved for the operator and can therefore only be accessed via remote configuration To capture the call when the other a b port is ringing the user goes off hook and then dials T82 33 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 6 OPERATING THE RS 232 PORT 6 1 Software installation for the MS Windows 95 and Windows NT 4 0 environments It is recommended to install the driver before connecting the NT IP to your PC A diskette with modem driver files INF files is provided with the unit To install the unit 1 Insert the floppy disk with the driver file in the floppy drive A 2 Double click on My Computer Control Panel and then Modem If the Modem Properties window appears click on Add 3 Inthe Install New Modem window select option Don t detect my modem will select it from a list Click Next 4 A window listing many modem types will be displayed Click on Have Disk Choose the appropriate disk drive and click on OK 5 When Windows 95 prompts you with a modem list select the proper modem ariver according to the desired operat
6. read parameter status command 4 2 3 Access command The access command sequence is the following jr j jr When entering the command keep pauses between digits to less than one second 4 2 4 Structure of Commands Each command specifies a parameter index Some parameters can be read and modified Some other can be read but not modified The following commands are used modify commands used for parameter configuration read commands used to read the current value of a configuration parameter reset commands are used to restore configuration values to the factory default Modify commands have the following structure B parameter index B parameter value gt EJ Read and reset commands have the following structure 11 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 B When the NT IP enters the configuration mode the device emits an audible tone When the initial key is operated the NT IP stops the generation of the tone and prompts the user with the message 4 2 5 Entering commands enter the parameter index The user enters a two digit code representing the parameter index and terminated by the key for modify commands or the key for a read command Only the last two digits entered are considered so in case of an error the user simply re enters the correct digits and then press or If the entered index is not valid a wrong entry message is generated foll
7. remote peer does not include the Link Discriminator option in its Configure Request then the NT IP then assumes the BACP BAP is not supported at the server and no further BACP BAP activity is taken If the Link Discriminator option is acknowledged in both directions then the NT IP attempts to negotiate BACP on the first established link i e it sends a BACP Configure Request including the Favoured Peer option with a Magic Number of 1 If the BACP BAP is not enabled the NT IP code rejects the Link Discriminator option if this is offered in the LCP configuration 8 4 3 1 Adding bandwidth using BAP When BAP has been successfully negotiated and the traffic conditions for adding a channel to the bundle are met the NT IP sends a Call Request BAP packet including the link type option set to ISDN If the Call Response indicates Nak the NT IP will not retry to establish the call until the conditions to add a channel are newly satisfied i e the add persist timer is restarted If the Call Response indicates Rej or Full Nak no more attempts will be retried for the entire duration of the bundle If the server replies with a Call Response indicating Ack the NT IP starts the new call possibly using any Phone Delta information included The NT IP does not implement the server side of BAP i e when receiving a Call Request the NT IP always responds with a Call response indicating Rej The request to add bandwidth may also come fr
8. request response and success failure packets are transparently passed CHAP between the local DTE and the access server Protocols other than PAP and CHAP must be handled in transparent mode This may not guarantee proper authentication in all configurations mode 1 S87 2 1 default 8 3 MP operations 8 3 1 Configuring for MP In order to use MP the proper modem driver must be installed and the destination access server must also support MP An attempt to place an MP call to a device that does not support it results in a single B channel PPP connection Once the PPP protocol as been selected using ATB40 the AT amp Jn command is used to enable or disable MP operation AT amp JO Disable MP AT amp J3 Enable MP in answer and originate modes NOTE AT amp J1 and AT amp J2 commands are rejected 8 3 2 Placing an MP call IF MP is enabled the NT IP includes an MRRU configuration option and possibly the EID configuration option see 88 3 6 when configuring the initial link If MP operation is rejected by the server the additional channel is not established and the session continues on the initial link 8 3 3 Establishing the additional channel After successful negotiation of MP the NT IP establishes the second call to the server By default the same telephone number is used for both MP connections If required two different numbers may be specified by using the ATD lt DN_1 gt lt DN_2 gt command where DN 1 and
9. state to bridge the two calls into a three way conference so that a three way conversation is possible among the promoting user and the two remote parties The promoting user has complete control over the conference as he she can disconnect or temporarily exclude either remote party from the conference or terminate the conference 5 3 10 1 User procedures The 3 party conference can be entered when one active call A and one held call H exist The user presses R3 to join call H into the conference Subsequently the user can release the connection added on conference H IR 1 resume private conversation with A H returns to the held state R2 request explicit call transfer release the connection to A and retrieve the connection to H to the active state resume private conversation with H place A on hold retrieve H to the active state R 6 5 3 11 Closed User Group This service allows a user to be a member of one or more closed user groups When such a membership is established the network performs special access checks over calls originated or received by the user Members of the same CUG are usually allowed to communicate among themselves but calls leaving or entering the group are usually restricted Nevertheless as subscription options a CUG member can be 27 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 granted the right to place Outgoing Access and or to receive In
10. the voice messages NOTE Voice announcements generated to guide the user during the configuration procedures cannot be deactivated NOTE For some localisation this parameter is disabled and cannot be modified 4 3 1 3 Operating mode The NT IP can be used as described above or simply as a pair gain line doubler by deactivating the S bus The relevant configuration procedure is described in below full NT IP configuration S bus enabled HDBPFBHE line doubler configuration S bus disabled 4 3 1 4 Incoming call management When an incoming call is compatible with both a b ports i e matching MSN and port profile four different options can be specified mode operation value broadcast simultaneously offered to both a b 0 alternate alternatively offered to either a b 1 or a b 2 1 a b 1 preferred preferentially offered to a b1 2 a b 2 preferred preferentially offered to a b1 3 Of course if either a b port is not free and not CW enabled the call will be offered to the other port independently of the setting of this parameter As an example to program the broadcast mode use MUEBDU 4 3 1 5 Amount of currency per charging uni This parameter representes the amount of currency for a charging unit It contains four significant digits and an additional digit to indicate the number of digits after the decimal point For example to program a value of 6 05 units of local currency for a single pulse either use
11. then dial and replace the handset To disable waiting calls then dial and replace the handset avoid interference with operation of modem or fax devices 52 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 answering a walting call When a call is waiting tones will be heard You can ignore the call or depending on the services provided by the network and subscribed to by the user clear the waiting call clear the active call and answer the waiting call put the active call on hold and answer the waiting call If you go on hook when a call is waiting the a b port will ring 10 4 Starting a second call This function is only available if the HOLD supplementary service is supported on your ACCESS During a call R wait for dial tone NEE Dial the number for connection B NOTE Pressing before connection to B is completed busy or no answer restores the connection to A If the user does not start dialling within a few seconds then the original call is resumed 10 5 Handling two simultaneous calls Once the second call is established you can clear the call on hold clear the active call and resume the call on hold switch between calls starts a three party conference transfer calls at least one call must be an incoming one 10 6 3 party conference Starting the 3 party conference when you have one active call to A and one held call to H press E E to join
12. A and H into a three party conference 53 59 EBBABBg nmnmmng o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 Handling the conference release connection to H resume private conversation with A H on hold transfer call release connection to A and retrieve connection to H Bonne resume private conversation with H A on hold 10 7 Malicious caller ID During the active phase of the call or even after the calling user has gone on hook press n 10 7 1 Call Forwarding Unconditional K Lift the handset Ss to activate dial BHEBH enter the number where you want your call to be transferred then dial H a voice announcement or an audible tone will confirm the successful outcome of the request Replace the handset to deactivate K Lift the handset 2 4 Ss dial a voice announcement or an audible tone will confirm the successful outcome of the reguest Replace the handset to interrogate the status of the service K Lift the handset F dial 54 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 BLZHBE the status of the service and the destination number will be announced Replace the handset 10 7 2 Call forwarding on calls meeting busy K Lift the handset BDEH to activate F dial enter the number where you want your call to be transferred then dial H a voice announceme
13. BOP endpoint discriminator 6 4 AT commands The NT IP RS 232 port accepts AT commands in the format 8 bit no parity one or more stop bits AT command processing varies according to the current NT IP status the command mode is entered after power on or at at the end of a connection Data from the PC are interpreted as commands the online mode is entered after an incoming or outgoing connection has been successfully established Any data received from the PC are used for transmission the online command mode is entered when an escape sequence usually with certain timing constraints is received in the online mode subsequent data from the PC are processed as commands although the ongoing connection is still active some AT commands can only be accepted if no connection is established or in progress An AT string consists of the upper case AT or lower case at prefix followed by one or more commands possibly separated by a space and terminated by terminating character usually x hex OD A reply is provided at every AT string If all commands are correct a positive reply is sent OK x otherwise the first occurrence of an invalid or incompatible command a negative acknowledge is sent ERROR 4 and the rest of the string is ignored The special AV or aV commands can be used to repeat the last AT command Some internal registers are used to assign values to some parameters These registers are identified by the letter
14. Call Pick up ras EN enabled enabled Wake up calls Aus KA enabled enabled Table H Special Service Enables 4 3 3 Read Commands ACCESS announcement U manufacturer name hardware and software revision U read activation status of port specific and global parameters U status of a b port 1 0 OK 1 NOK U status of a b port 2 0 OK 1 NOK U current power status 0 emergency 1 normal U current S bus configuration O short 1 extended O calling number of the last configuration call 18 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 U date and time U reset all user configuration parameters to their default values O reset all user and operator configuration parameters to their default values Table Direct Commands 4 3 3 1 Read activation status of port specific and global parameters command 09 This command is used to check if some parameters have been changed via a remote configuration call but are still waiting to be activated Four digits are read back according to the following table a b1 specific parameters sies 0 activated a b2 specific parameters wang for SUL waiting for activation global parameters 0 ie 4 data port parameters waiting for activation lO activated A332 Head date and time This command allows to read date and time as maintained by the NT IP The NT IP uses date and time information contained in some messages from the network
15. DN 2 represent the phone numbers of the destination The DTE will not be notified of this additional call If Bandwidth On Demand see 8 4 1 is enabled the NT IP will not start the call immediately after negotiation of MP but it will rather postpone the call until the conditions for establishing the second channel are met If this second call fails due to network reasons e g network congestion or the access server being busy or the second B channel being not available the NT IP will repeat the call at intervals of 60 seconds If the call fails because one analog call or a configuration call is active and the call bumping feature is enabled see S8 4 2 the NT IP will automatically retry when that call is cleared 8 3 4 Configuring the additional link Once the call is established the NT IP autonomously negotiates configuration parameters for the additional link using the same option values negotiated for the first link 45 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 If LCP cannot be properly configured or the authentication procedure does not complete the B channel is disconnected and single channel operation continues 8 3 5 Authenticating the additional link If the default non transparent authentication mode is selected S87 2 1 see 8 2 3 PAP or CHAP authentication are completely handled by the NT IP using the username password cached when establishing the initial link If the tr
16. ECT 115200 Q 23 CONNECT 230400 Q 47 CONNECT 128000 42 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 Symbol reference operation SUPPORTED ae reports DTE_speed Q reports DTE_speed protocol DCE speed error control si reports the DCE speed error code CONNECT64000NONE 4 reports the DCE speed error code error control CONNECT64000NONELAPF where V120 V110 PPP 64000 128000 2400 4800 9600 19200 38400 NONE LAPF LAPD 43 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 8 PPP OPERATION The Point to Point Protocol PPP defines procedures to configure maintain and terminate a link between two peers This link is used for the transport of higher layer network protocols such as the Internet Protocol Additionally the PPP defines a framework for multiple peer to peer signalling protocols such as authentication protocols multilink protocol and bandwidth allocation protocol Multilink PPP MP is a protocol that allows two end systems to use multiple physical channels to achieve a greater transmission speed When using MP the separate logical links existing on each physical connection are connected in a bundle For ISDN applications separate calls are established on the two B channels resulting in a transmiss
17. N is out of range or if current status is not compatible enable disable Multilink PPP 0 MP disabled default 3 MP enabled both originate and answer command OK or ERROR if N is out of range or if current status is not compatible define endpoint discriminator to be used in MP configuration OFF no EPD in use default C lt Octet_1 Octet 2 Octet 3 Octet n pepe command 39 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 7 GENERIC OPERATION 7 1 RS 232 control signals DCD C109 can be programmed to indicate connection status AT amp C1 or it can be set permanently ON AT amp CO DTR transition to OFF causes the current call to be cleared if the AT amp D1 or the AT amp D2 commands have been issued If hardware flow control mode is active AT amp H3 the CTS C106 is used to flow control the local DTE DSR C107 can also be set to be permanently ON AT amp SO or to follow DTR C108 status AT amp S1 7 2 Handling data calls 7 2 1 Receiving calls The RS 232 port can be allocated one MSN and one subaddress using the AT amp ZO command If no MSN subaddress has been programmed incoming data calls will be offered to the data port independently of the called party number or subaddress contained in the incoming call SETUP message If instead a MSN and or a subaddress are configured then only calls directed to that MSN subaddress are answered The programmed MSN subaddress is also in
18. NT IP Enhanced ISDN Network Termination with one RS 232 and two analog ports Installation MANUAL SW REVISION 2 0 DATE December 23 1998 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 safety rules CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The electrical supply used for this equipment involves LETHAL voltage levels If objects or liquids penetrate inside the workstation immediately disconnect the supply cable Before using the equipment again have it checked by qualified personnel DO NOT ACCESS INTERNAL PARTS WHICH ARE NORMALLY PROTECTED WITH PANELS FIXED WITH SETSCREWS BEFORE ANY OPERATION ALWAYS CHECK THAT THE ELECTRICAL SUPPLY HAS BEEN COMPLETELY AND EFFICIENTLY DISCONNECTED If the user is not able to restore the regular functioning he must refer to qualified service personnel In case of fire avoid by all means using water to extinguish it warnings Handling of devices which are subject to static electricity au UE ae J a SENSITIVITY Many of the components used in the workstation are subject to damage by electrostatic discharge When handling connectors between different devices disconnect the electrical supply using the switch located in the back part of the system Failure to do so could cause permanent damag
19. OK ERROR if n invalid TF Setvetiosomoe T Vx P x 0 1 response in abbreviated extended format Command and online command modes R OK ifx 1 0 if x 0 ERROR otherwise VE Defines the format of the CONNECT message KK Command and online command modes R OK ERROR if noutof range 37 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 EE Reset all parameters to the values in the non volatile memory Command mode RY OK ERROR if status invalid F oremanagement SSCS LP sot C109 alvays ONcomecion sas Y C108 Management xe simulated C108 always ON C108 1 C108 2 x 21 use as C108 1 start a call using stored number when C108 1 goes ON X22 use as C108 2 clear call when C108 2 goes off V Command mode OK ERROR if status incompatible Resets all parameters to default values None or 0 V Command mode OK ERROR if status incompatible flow control management x 0 flow control disabled x 3 hardware flow control RTS CTS default x 4 software XON XOFF flow control V Command mode C107 management x 0 1 C107 always ON follows C108 Command mode OK ERROR if status incompatible Save current settings in non volatile memory None V V Command and online command mode A Assign Directory number and subaddress nnnn ssss assigned DN subaddress max 28 19 digits Command mode OK ERROR if status incompatible Readback the assigned DN sub
20. OTS like procedures and the signalling procedures used on the network side These latter procedures conform to the relevant ETSI standards that describes signalling that takes place between the central office and the user terminal on the D channel The NT IP also supports the Keypad Protocol This protocol is much simpler and it basically results in the keys pressed being transparently transmitted as keypad information to the switch where all the processing takes place The keypad protocol requires less processing on the part of the user s terminal which basically has no knowledge of what service is being requested by the user Older switch implementation tend to offer most services using the keypad protocol although newer switch releases now offer supplementary services using the feature rich functional protocols NT IP makes it completely transparent to the user what kind of protocol has to be used to obtain a specific supplementary service The user only presses the same key sequence required when connected to the POTS 5 3 Service description and user procedures The following sections provide a short description of each supplementary service supported by the NT IP for the a b ports and then details user procedures to configure or operate the service Information on the outcome of activation deactivation interrogation and invocation procedures are provided by a voice announcement or for the Call Forwarding services and the Call w
21. S followed by a number e g the character used as a command terminator is contained in S3 default 7 whilst S5 default backspace Ps indicates an editing character which is interpreted as a command to cancel the last entered character in a command If the AT string contains more than one interrogation a reply is provided for each request with a final OK or ERROR 6 4 1 Automatic Speed Detection In the command and in the online command phase the NT IP automatically detects the PC speed and immediately upgrades its own speed to reflect the detected speed Supported PC speeds are 2400 4800 9600 14400 19200 28800 38400 57600 115200 and 230400 b s The last speed detected before entering the online state is then used throughout the call 6 4 2 AT command list The description of every command is provided according to the following template F Controls Local echo of received commands P x 0 1 local echo disabled enabled command and online command mode R OK o ERROR if x is out of range This scheme indicates that the command ATE1 or ATEO has the function F to control the local echo to the AT commands received 35 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 the command reguires specification of one configuration parameter P the command is valid V in the command or in the online command mode a positive OK o negative ERROR reply R is provided
22. T IP Users Manual sw rev 2 0 Replace the handset to interrogate the destination number K Lift the handset BL ZEBEBL dial the destination number will be announced 10 7 5 Alarm Calls To schedule an alarm call dial K Lift the handset T 5 5 T h h m m where hh mm represents the alarm time The alarm time must be at least 10 minutes ahead of the current time Up to three alarm calls per port can be scheduled with a minimum difference of 5 minutes between calls VA Lift the handset DB nan to interrogate the status of a specific alarm call K Lift the handset pnBBBDnnen nnn 57 59 Lr dial to deactivate an alarm call tay dial to deactivate all alarms tag dial o2 aethra TELECOMUNICAZIONI 10 7 6 Call capture To answer a call ringing on a phone connected to the other port K Lift the handset e dial BEBE the call will be answered and connected to your phone 58 59 Aethra NT IP User s Manual sw rev 2 0 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 11 TECHNICAL SPECIFICATIONS Mechanical Billy dx WONG MET 180 x 140 x 45 mm NU EM iu M v n XXX gr Power Supply eE es as M 230 Vac 10 15 50 Hz Max Current At Nominal Voltage iii aaa lt 100 mA Line interface EO CO gt SPSS 2B1Q Standard compliance eese ETR 080 me i aeen c
23. TE speed is greater than the link speed or due to back pressure from the remote site 40 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 Software flow control AT amp H4 is based on two control characters used to stop and resume traffic in the opposite direction Character codes used for this purpose are contained in register S31 default 0x11 XON and register S32 default 0x13 XOFF 7 4 Storing and retrieving parameter settings Current settings can be stored in non volatile memory with the AT amp W command The ATZ command restores all settings to the values contained in the non volatile memory The AT amp F command is used to reset all parameters to the factory default values parameter value parameter value TEI AUTOMATIC Verbose S23 bit 6 ON 1 MSN EMPTY Result code S23 bit 7 ON 1 Subaddress EMPTY XON char S31 17 Auto Answer S0 OFF 0 XOFF char S32 19 Escape char S2 43 Max frame size 256 CR char S3 13 Multilink Protocol disabled LF char S4 10 Endpoint Discriminator none BS char S5 8 call bumping enabled DTE speed S18 115200 9 BAP BACP enabled C107 S21 bit 3 Follows C108 1 Add persist time 0 C109 S21 bit 4 Line status 1 Add threshold 48 kb s C108 S21 bit 5 From DTE 1 Sub threshold 32 kb s Echo S23 bit 0 ON 1 7 5 Response to the ATI6 command The following information is given as a response to the ATI6 command DTE Async HDLC s
24. TEI i Sbusenabled 0 broadcast o Incoming call management U 05 broadcast a b port 1 preferred Voice announcements Operating modes a b port 2 preferred mm eoo omo TE enabled o ace la Md Remote configuration numbers O 70 89 0 28digits Empty Remote configuration subaddress O 90 j0 4dgits 999 Table A General parameters Amount of currency per charging unit 1 Note U 2 user access O operator only access 23 1 4 TEI assignment If the access has a multipoint configuration the NT IP must be configured for automatic TEI assignment by assigning the value 64 in the TEI assignment parameter index 02 If the access has a point to point configuration the TEI must be programmed with a value ranging from 00 to 63 according to the value of the TEI assigned by the ISDN service provider usually the value 0 is used for a point to point access with TEI O to 2 7 6 4 for a multi point access 1 this command is only active in remote configuration mode 13 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 4 3 1 2 Voice messages The NT IP may be programmed to generate voice announcements to provide the user with the results of operations involving some supplementary e g when in band announcements are not provided by the network or local services H Dj EH H Dj To activate the voice messages H Dj EH H 1 BH To deactivate
25. UP message 9 3 V 120 operation As soon as the connection is established an initialisation procedure takes place Should this initialisation fail then the call is cleared Once that the logical link has been established characters received from the DTE are assembled into V 120 frames Frames are then forwarded either when the maximum frame length is reached as set in the ATCL command or when a 100 msec timer since the last received character has expired The default maximum transmit frame size for V 120 is 256 octets not including any FLAG transparency bit and octets and FCS The ATCLn command n 1 2048 can be used to select a different value The maximum receive frame size is always set at 2048 octets The NT IP always uses a window size of 7 The NT IP assumes that the local DTE uses a character format of 8 bit data no parity 1 stop bit 8N1 51 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 10 BASIC USER PROCEDURES K Lift the handset 10 1 Placing a call Wait for the dial tone HEE Dial the desired number 10 2 Restricting the Caller ID K Lift the handset Wait for the dial tone then dial BHEH followed by the desired number 10 3 Handling waiting calls The user has an active call to B and receives audible tones for a waiting call K Lift the handset 7 4 3 4 K Lift the handset LIE disabling CW tones may be necessary to To enable waiting calls 7
26. a request for diverting calls for all services As each activation can specify a different diverted to number the user has the possibility to specify different target numbers for each different service and for each different number on the access The CF supplementary services are offered on a subscription basis with several notification options tothe served user notification of forwarding notification of service being active tothe calling user notification of forwarding to the forwarded to user presentation of the served user number when the diverted call is offered Activation deactivation and interrogation procedures are available 5 3 14 1 User procedures The NT IP provides full support for the CF services using the ETS functional protocol specified in ETS 300 207 1 As a customer localisation option the NT IP also provides for support to the CF services using the stimulus procedures The following description applies to the functional procedure this notification occurs when the served user places an outgoing call 29 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 When wishing to request unconditional transfer of incoming calls to a defined number the user goes off hook and dials T 21 T lt diverted to number gt This sequence translates into a request to the network to activate the CFU service for the served number that is represented by the fir
27. address none Command and online command mode nnnn ssss lt nnnn gt V lt SSSS gt V 3 RU n EZ RU Ea P y RU Y RY OK ERROR if status incompatible FY P EA RI EA P EA R E P EA RU FY EA kA R 38 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 6 4 5 Enhanced AT commands F Setthe protocol in use for B channel communication 1 OO 20 V 120 40 PPP async to sync command OK or ERROR if N is out of range or if current status is not compatible Enable Disable Call Bumping 0 disable 1 enable default OK or ERROR if N is out of range or if current status is not compatible add traffic threshold 8126 n kb s default 48 OK or ERROR if n is out of range or if current status is not compatible add persist time in minutes S85 bit 1 6 Oto 63 default 0 OK or ERROR if N is out of range or if current status is not compatible EE P F P F LP R F P R LE ES F add persist time in seconds S85 bit 1 6 P 0 to 63 default 0 Er IE F P EZ H F ae R OK or ERROR if N is out of range or if current status is not compatible subtract persist time in minutes S125 bit 1 6 0 to 63 default 0 OK or ERROR if N is out of range or if current status is not compatible subtract persist time in seconds S125 bit 1 6 0 to 63 default 0 OK or ERROR if
28. aiting service such announcements can be replaced by audible tones according to the setting of the position 9 of parameter N9 When tones are used a positive outcome is signalled trough a dial tone while a negative outcome Is signalled using a busy or a congestion tone 5 3 1 Multiple Subscriber Numbers MSN This service allows for multiple telephone numbers MSN s or directory numbers DNs to be assigned to an ISDN access This basically permits the user to allocate numbers to different terminals and or services The maximum number of MSN s per access is a network option 5 3 1 1 User procedures In the NT IP either a b port can be allocated one two or three MSN s while the RS 232 port can only be assigned one MSN When MSN s are allocated the NT IP routes incoming calls to the relevant port s based on the called party number information contained in the incoming call set up message If no MSN are programmed for a port then incoming calls are offered to that port independently of the called party number included in the incoming call set up message The first MSN assigned to the a b port is included as the calling party number in outgoing calls MSN numbers are separately programmed for either port in registers N1 N2 and N3 It may be sufficient to program any number of digits as required to identify the number among those assigned to the access but as a general rule it is safer to enter the whole MSN as some networks may
29. all Bumping ATCEO Disable call bumping 47 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 ATCE1 Enable call bumping default The Call bumping enable status is also reflected in bit O of register S85 8 4 2 1 Outgoing calls If the user goes off hook to start a voice call the NT IP stops sending packets on the additional channel and then requests link termination on the additional channel When the server acknowledges the termination request indicating that no more packets are being transmitted on that link the NT IP clears the call and then sends the call set up message for the voice call NOTE due to the time required to properly terminate the additional link some delay may occur before getting the dial tone for the analog call 8 4 2 2 Incoming calls An incoming voice call is offered by the network as a waiting call when both B channels are in use If Call Bumping is enabled the NT IP transmits an ALERTING message it rings the a b port s and it then waits for the user to go off hook to start the link termination procedure on the additional channel NOTE this avoids slowing down the data traffic until the call is actually answered nevertheless the user may experience some delay before being connected to the calling party When the speech call has been cleared the NT IP attempts to re establish the additional link it therefore places an additional call re using the same phone numbe
30. am a b port 2 as follows type of terminal telephone call waiting type and type II CW enabled delayed clear back 20 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 generation of metering pulses 21 539 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 5 SUPPLEMENTARY SERVICES Two types of services are supported by the NT IP ISDN supplementary services i e services that rely on network features Local additional services that do not imply interactions with the network 5 1 ISDN supplementary services Most ISDN supplementary services are related to the deployment of advanced telephony services e g call waiting call forwarding calling line indication etc and from the user s perspective bear a close resemblance to the corresponding services provided by the analog networks NOTE Most supplementary services may not be available on a general basis and may require a specific agreement with the ISDN service provider The NT IP supports a number of such ISDN supplementary services number identification services e multiple subscriber number MSN e calling line identification presentation CLIP e calling line identification restriction CLIR e connected number presentation COLP e connected number restriction COLR e malicious Call Identification MCID call offering services e terminal portability TP e call forwarding unconditional CFU e call forwarding on busy s
31. ansparent authentication mode is selected S87 2 0 then If PAP authentication has been negotiated on the initial link the NT IP sends the PAP authentication request using the same username password as in the first authentication if CHAP authentication has been negotiated on the initial link the NT IP transparently passes any CHAP authenticate request response and success failure packets between the PC and the access server It is recommended to use the default mode as some software implementations on the PC do not properly handle multiple CHAP authentication cycles during a PPP session This would prevent additional connections to be authenticated However transparent CHAP authentication is the most secure method as the user s password is not cached within the NT IP 8 3 6 MP data phase If LCP configuration and authenticated on the additional link are successful the NT IP distributes outgoing traffic from the DTE between the two channels and sequences the packets received on either channel in a single packet flow before handing them over to the DTE Should the connection on either channel be cleared for reasons other than call bumping the NT IP will not re attempt to establish the connection 8 3 7 Endpoint Discriminator The Endpoint Discriminator EID consists of a Class Field and a user defined Address Field When this EID is configured into the NT IP it will be used during the PPP negotiations that occurs on the ini
32. by the NT IP 36 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 6 4 3 Basic commands F Immediately answer the incoming call P Noes ooo When an incoming call exists D F Start a new call to the indicated number subaddress P T Po T ignored nnnn ssss called number subaddress max 20 19 digits Also supports the ATDnnnn ssss nnnn2 ssss2 format for dual numbers nnnnn Command ssss R new state of connection CONNECT NO CARRIER ERROR incompatible LF Controls echo ofreceivedcommandstothePC O OOOO U TP x 01 local echo disabied enabled O OOOO LR OK o ERROR fw isoutofrange LF Release curentcal O OOOO TP None y X 0 2 4 5 7 Product code AETHRA NT IP X 21 ROM checksum XXXX 4 hex digits Xd firmware version Vx y report link status on the last call x26 Command or online command v R CONNECT o ERROR if send in an incompatible state S F Display response codes P X 0 1 display of response codes enabled disabled None if x 1 if x 0 either OK ERROR if x is out of range F Read Sn register n 0 2 3 4 5 7 18 21 23 25 27 31 32 82 83 85 87 125 126 127 V Command and online command modes R Current value of register Sn ERROR if n invalid F Assign the value v to register Sn n 0 2 3 4 5 7 18 21 23 25 27 31 32 82 83 85 87 125 126 127 Command and online command modes R
33. cable for connection to the PC serial port 1 8 m DB 25 male to DB 9F adiskette containing the installation software including all necessary drivers ausers manual screws used for wall mounting 9 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 4 CONFIGURATION 4 1 General Information on Configuration Modes Local and remote configuration procedures are provided to access and modify configuration and diagnostics registers and to download the operating firmware Generally speaking configuration parameters are divided in two broad categories global parameters affect the general operation of the NT IP port specific parameters only refer to the operation of an individual a b or data port After downloading the new firmware is stored on a secondary permanent read only memory This firmware can be activated either immediately or at a later time using a separate activation command Local configuration Two types of local configuration are possible tone based using key sequences from a DIMF phone connected to an a b port with voice announcements guiding the configuration process PC based from a local PC connected to the RS 232 port of the NT IP The PC runs MS Windows 950 or Windows NT 4 0 or later To prevent users from tampering with critical parameter two local configuration modes are provided a user configuration mode allows for modifying non critical parameters an o
34. call at the other port the user goes off hook and dials 79 or if a call ID has been associated with the call 79 1234 25 39 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 Note that the suspended call can also be resumed from the same port or from a terminal connected to the S bus 5 3 8 Call Waiting CW This service allows the user to be notified of an incoming call even when both channels on the user s access are busy and therefore no channel is available for the call Were the CW service not available at that access then the call would be cleared with cause user busy Standard calls are offered with indications of the associated channel while call set up messages for waiting calls bear the indication no channel available Upon receiving this notification the user can take appropriate actions to make one channel available Such as Clearing or placing one of the existing calls on hold and then answer the call The maximum number of waiting calls is a network option The CW supplementary service is available by prior arrangement with the network operator 5 3 8 1 User procedures The NT IP uses audible tones CW tones to inform the busy user of a waiting call As an extension to the standard service the NT IP also generates CW tones in the case that a standard i e non waiting call is being offered but the compatible port is busy The user can dynamically activate or deactivate th
35. channel The Bandwidth Allocation Protocol BAP allows the two endpoints i e the NT IP and the PPP server to gracefully negotiate when adding and dropping the additional bandwidth and therefore it makes more likely that BOD decisions are better suited to the real traffic BAP also provides a means to indicate the telephone number that has to be dialled to place the additional call 15 It the waiting call supplementary service is offered by the network and subscribed to by the user 48 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 The Bandwidth Allocation Control Protocol BACP is a control protocol for BAP and it is mainly used to determine if the peer supports BAP BACP BAP can be enabled as follows ATBPO Disable BACP BAP function ATBP1 Enable BACP BAP function by default BACP BAP is transparent to the user When the BACP BAP function is enabled and the MP has been successfully negotiated the NT IP uses BACP to determine whether the peer supports BAP and to agree upon link discriminators If the access server agrees to use BAP this is used to negotiate addition and removal of the second B channel with the peer equipment based on user defined traffic thresholds When BACP BAP is enabled the NT IP includes the Link Discriminator option in LCP configuration for every link If during configuration of the first link in the bundle either the Link Discriminator option is code rejected or the
36. cluded as COLP information in CONNECT messages When the V 110 mode is selected the NT IP checks for V 110 rate adaptation information to be included in the incoming call SETUP message 7 2 2 Placing calls Calls are placed using the standard sequence ATD lt numbers or optionally ATD lt number gt lt subaddress gt sequence The programmed MSN subaddress is used for the CLIP service in outgoing calls 7 2 3 Terminating calls Calls are cleared by exiting the online state using the escape sequence and then disconnecting the call using the ATH command Alternatively if the AT amp D1 or the AT amp D2 commands are in force calls are cleared with DTR C108 going OFF 7 3 Flow control Flow control on the interface to the local DTE can be configured using the AT amp H3 command AT amp HO Flow control disabled AT amp H3 Hardware CTS RTS flow control default AT8H4 Software XON XOFF flow control With hardware flow control enabled AT amp H3 the NT IP stops forwarding data received from the line if the local DTE sets RTS to OFF Depending on the protocol in use this may in turn translate into the NT IP exercising flow control mechanisms on the link e g by sending RNR frames or withholding acknowledgement of received frames to slow down the remote device Similarly the NT IP uses the CTS signal to instruct the local DTE not to send more data to avoid overflow of its internal transmit buffer e g when the D
37. coming Access calls outside the CUG non CUG calls Some additional restrictions can be placed on CUG members to prevent them from placing outgoing calls barred or receiving calls incoming calls barred within the CUG The CUG service is available on a prior arrangement with the network provider As a subscription option the user can subscribe to a preferential closed user group n this case outgoing calls are by default treated as CUG calls and no action is required on the part of the user s terminals to place CUG calls If no preferential closed group has been subscribed to then the user must explicitly indicate a CUG index when placing a CUG call 35 3 1 1d User procedures In the NT IP a user with a preferential CUG places a call outside the CUG by dialling O1 in front of the called number Calls within the CUG do not require any prefix Users without preferential CUG need to explicitly indicate a CUG index in the example 1 2 3 4 to place CUG calls by dialling 01 12341 in front of the called number Non CUG calls do not require any prefix 5 3 12 Advice of Charge AOC This service allows the served user to receive charging information related to calls and to the invocation or activation of supplementary services The AOC supplementary service is usually activated on a general basis i e the served user receives charging information at every call On some networks activation of the service may be require
38. d on a per call basis The AOC service actually consists of three services the AOC S provides information on charging rates at call set up time and when charging rates change during a call the AOC D service provides cumulative charging information during the active cycle of a call the AOC E service provides recorded charging information at the end of a call A network operator may choose to provide charging information either in charging units or in as a currency amount 5 3 12 1 User procedures The NT IP is able to process the received charging information and to generate charging pulses on the a b port that originated the call Generation of charging pulses is enabled for either port by setting the relevant configuration parameter registers N9 position 2 to 1 Additionally when charging information is provided as currency amount the general configuration parameter 08 contains the amount of currency equivalent to a charging pulse This register contains 4 significant digits and an additional multiplier digit that specifies the number of digits after the decimal point For example if 6 05 units of local currency correspond to a charging pulse the register shall be programmed either with 60503 or 06052 7 the user must have subscribed to the Outgoing Access OA option 28 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 charging pulses may adversely affect operation of modem
39. d reliable connection to a PPP terminal server such as an Internet Service Provider ISP a remote access an e mail access server etc When connecting to the ISDN through a NT IP you can use ISDN basic telephony services without any need to purchase additional equipment digital phones and or terminal adapters and you can keep using standard devices such as standard phone sets cordless phones analogue modems group 3 fax machines automatic answering machines analogue micro PBX s etc The NT IP also supports emergency phone operation and a range of supplementary telephony services call hold call waiting 3 party conferencing call forwarding etc A fully digital data service is provided by the NT IP straight to the COM port of a PC with unrivalled performance compared to analogue modems including sub second call set up times and a virtually error free data channel to the service provider at a guaranteed bit rate No additional hardware or software need to be installed to operate the service Additionally you can connect native ISDN terminals such as videotelephony terminals group 4 fax machines etc directly on the S bus INTERNET SERVICE PROVIDER TO OTHER S BUS DEVICES Primary Rate Access S bus Figure 1 4 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 1 1 Feature Summary Standard NT1 2 wire interface on the U reference point 4 wire user bus on the S
40. d threshold during half the add persist time the NT IP responds with Nak No immediate action is taken by the NT IP which keeps the link in use until the reception of a LCP Terminate Heg 50 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 9 V 120 COMMUNICATIONS V 120 is an international standard that defines a protocol for peer to peer communications over ISDN The V 120 protocol allows two endpoints to exchange error protected flow controlled traffic V 120 implements a variant of HDLC based Link Access Procedure known as LAP F and described in the ITU T recommendation V 120 and Q 922 The NT IP does not allow for link parameter negotiation or for establishment of multiple logical links on the same physical channel Only the single default link LLI 265 is used 9 1 Configuring the V 120 mode In order to use V 120 the proper modem driver must be installed and the called destination must also support V 120 The ATB20 command is used to select V 120 operation ATB20 Select V 120 protocol 9 2 Placing V 120 mode calls The standard seguence ATD lt number gt or optionally ATD lt number gt lt subaddress gt is used to place a V 120 call The call SETUP message includes the Bearer Capability BC information element set to unrestricted digital information When V 120 is configured this is the expected B channel protocol independently of any LLC information being included in the incoming call SET
41. e service by going off hook and then pressing A3 to activate the service or t43t to deactivate the service Activation and deactivation of the CW service result in setting the position 3 of parameter 4N respectively to 1 or O To interrogate the service the user presses Ht4d3t to receive a voice announcement or a tone on the service status disabling CW tones may be necessary to avoid interference with operation of modem or fax devices When CW tones are heard during a call the user can ignore the call or depending on the services provided by the network and subscribed to by the user clear the waiting call RO clear the active call and answer the waiting call R1 put the active call on hold and answer the waiting call R 2 If the user goes on hook when a waiting call is present the a b port will ring provided that the conditions for delayed clear back are not met 5 3 9 Call Hold and Retrieve HOLD This service enables a user to place an existing call into a stand by state and subsequently to retrieve the call When the call is the held state the associated channel becomes available for use with other calls by the same user e g to start a new call or to accept a waiting call The HOLD service may available on a subscription basis or on a general basis 26 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 The HOLD service is commonly used to start a new call o
42. e to the equipment this product complies with the EEC Directive 89 336 relating to Electromagnetic compatibility and to the EEC Directive 73 23 Low Voltage concerning safety standards 2159 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 Glossary The following terms will be used throughout this document ISDN terminal a generic terminal designed for connection to the S bus such as an ISDN phone a videophone a terminal adapter a group 4 fax a PC equipped with an ISDN board etc analog terminal a generic terminal designed for the connection to the PSTN such as a phone a modem a fax a key POTS terminal system an answering machine etc POTS port or a b port one of the two interfaces provided by the NT IP for connection to analog terminals the a c supply is available and adequate power is provided to the NT IP emergency conditions the a c supply is not available and the NT IP uses the remote power from the exchange to guarantee a restricted service to the user local loop the telephone line consisting of a copper pair that connects the NT IP to the ISDN exchange 3 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 1 INTRODUCTION The NT IP is a network termination for the ISDN basic rate access which adds to the features commonly found in a standard ISDN network termination NT1 two standard telephone ports and an RS232 interface to provide a fully digital fast an
43. etwork operator critical information regarding the call such as calling and called party number time and date of the call A subscription option allows for automatic registering of all unanswered calls The MCID supplementary service is available by arrangement with the service provider Cancellation is at the request of the subscriber or for service provider reasons 5 3 5 1 User procedures The NT IP allows the user to invoke the MCID service by pressing R 9 during the active phase of the call or immediately after the caller has disconnected 5 3 7 Terminal Portability This service allows a user to suspend a call and subsequently to resume it at the same terminal and at the same socket or after moving the terminal to a different socket or at a different terminal on a different Socket When the call is suspended the network maintains the connection to the remote user and it stores relevant information for the call B channel to allow the call to be re established at a later time When suspending a call the user may specify a call identity which has to be indicated when the call is being resumed one es User procedures The TP service is used in the NT IP to transfer active calls from one a b port to the other When a call is active on one port say port 1 the user suspends the call by pressing R 79 if no call ID is entered or R 79 1234 if a call ID e g 1234 is desired The user then goes on hook To resume the
44. ew current setting of the Endpoint Discriminator Address 8 4 Call Management Procedures The NT IP implements call management procedures in order to optimise the usage of the B channels and minimise costs call bumping traffic based bandwidth on demand with and without bandwidth allocation protocol 8 4 1 Traffic based Bandwidth On Demand Bandwidth On Demand BOD or Dynamic Bandwidth Allocation DBA refers to the ability of a system to dynamically change the bandwidth of a multilink bundle by establishing and removing links BOD decisions are based on link utilisation The decision to add a channel is based on either the transmit or the receive traffic on the existing channel staying above an add threshold for a defined add persist amount of time The additional channel is removed when the both the transmit and the receive traffic on that channel stays below a subtract threshold for a defined subtract persist amount of time Add and subtract threshold and persist time are specified in the following AT commands ATJAn add traffic threshold for n kbps default n 48 126 ATJSn subtract traffic threshold for n kbps default n 32 127 ATKAMn or ATKASn _ add persist time for n period in min sec n 0 63 S85 Bit 1 7 ATKSMn or ATKSSn subtract persist time for n period in min sec n 0 63 125 bit 1 7 If the add persist time is 0 then BOD is disabled default BOD is only effective if calls originate from the NT IP
45. first programmed MSN associated with the port that originated the call If the first MSN is not programmed then no information is included 5 3 3 Restriction of caller s ID CLIR This service allows the calling user to request that her his party s number and subaddress is not presented to the called party There are different subscription options for CLIR on a per call basis default allowed the calling party identity is presented unless the user explicitly requests restriction on a per call basis T n default restricted the calling party identity is restricted unless the user explicitly requests to allow its presentatio the calling party identity is restricted independently of the user requesting the contrary 5331 User procedures Depending on the value assumed by the CLIR parameter register 4N position 7 the outgoing SETUP message contains a presentation indicator set as shown in the following table value r CLIR param no prefix 316 31 0 default MERE 8 slowed restricted allowed If the CLIR parameter is set to 0 and the CLIR service is available at the user s access the user can restrict the presentation of the own number by dialling 31 in front of the called number Alternatively the user can set the CLIR parameter to 1 to restrict presentation for all calls unless 31 is dialled in front of the called number for a specific call Setting t
46. h audio if different types of terminals e g a phone and a modem are connected to the same port telephone if only telephones are connected to the port fax if only a fax machine is connected to the port when the port is deactivated incoming calls are not offered to this port so that the network and the calling user will deactivated be informed that no phone is ringing This mode may be used when no terminal is connected to the port Outgoing calls are however possible this setting uses certain signalling features of the ISDN For example calls coming from an ISDN phone or another NT IP POTS ports set as telephone will not be answered by a POTS port confired with a fax profile 16 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 4 3 2 3 2 Audio level selection The NT IP provides for two sets of reference audio levels for each a b port Higher levels meet reference levels values specified by most network providers and are suited for modems and fax devices Lower levels provide for greater echo attenuation and better acoustic comfort 4 3 2 3 3 Polarity reversal When this feature is enabled the voltage applied to the a b interface is reversed when the called party answers the call reception of the connect message The voltage then reverts to the normal polarity when the calling user goes on hook 4 3 2 3 4 CLI presentation Two separate parameters are used to respectively enable the CLI
47. h the network 5 4 1 Call line identification CLI services This service also Known as CLASS services allows a user to be informed of the number of the calling party before answering a call To this purpose a specific display device must be connected to the a b port or alternatively the display may be integrated in the phone 5 4 1 1 User procedures CLI services are provided for normal and waiting calls They are available for both ports in normal and in restricted power mode and in every situation e g simultaneous occurrence of call offering to both a b or when the other a b port is already ringing etc 2 if the per served user number service is not available the network will however process the request as if contained all number 10 the activation deactivation and interrogation requests may come out to be invalid in the case that the following conditions occur 1 the network option activation deactivation and interrogation for all numbers has the value NO 2 the MSN service is provided to the access 3 the all number version of the request is used due to the first MSN not being programmed In this case the first MSN must be programmed to allow proper service operation 30 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 The NT IP provides the calling party number or an indication that the number is not aviailable O or restricted P Date and time are also included
48. he CLIR parameter to 2 allows for a presentation indicator to be included by default in the SETUP message The user has however the possibility to request restriction by prefixing 31 to the called number 5 3 4 Connected Line Identification Presentation COLP This service allows the calling subscriber to receive information regarding the identity telephone number and possibly subaddress of the party answering the call due to possible call diversions this number may be different from the called one 6 as required by some networks 24 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 5 3 4 1 User procedures The NT IP uses the first MSN for the relevant port and it includes this information if present in the CONNECT message This service is only supported in the outgoing direction only display of the connected party number is not available on a b ports 5 3 5 Connected Line Identification Restriction COLR This service allows the answering user to request that the number and subaddress be not presented to the calling party 5 00 User procedures Each a b port can be programmed to request COLR on each call by setting register 4N position 8 to 1 See 4 3 2 5 No activation procedure is available so the COLR is only provided for all calls 5 3 6 Malicious caller ID MCID Upon invocation of this service during an incoming call the network registers and stores under control of the n
49. hipee P PPP TEN max 1 7 W Je cm T er eee 21 kKQ Vremote supply gt 90 Vac HS232 port contol COUN NT As TXD RXD RTS CTS DSR DTR DCD 2 8 i i EE up to 230 4 kbit s ACCESS BIDIOCOL wciaectancinacitaniiactsecinaatiens PPP internal async to sync converter daling INGE ss n kama Hayese AT command set a b ports a_zl or ejs AE A S DTMF pulse 9 210 lt uoosiessedtep PPP MUI M NUR NBENID NNI AM E PE DUE real 6000 transmission gUally NR OD EAEEREN exceeds Q 552 Ringing Generator EE UE AE AE 25 Hz symmetrical voltage ee eee ee ee ee eee ee ee ee gt 37 V ne Zioag 2kQ 60 e iege a E T o E E T 10 Reference Standard for Environmental Quality Ill e E O AE EN60950 oct 96 EMC and PTOIEC1IONS scii e niae deed e ETS 300 047 ETS 300 386 2 2 jii qe PE MA ETS 300 019 1 1 class 1 2 vs 1 3 a E ES ETS 300 019 1 2 class 2 2 KPEMIBIL J nm ETS 300 019 1 3 class 3 2 subjet to change without notice 59 59
50. if this information is received form the network in the specific information element contained in a CONNECT or in other messages The NT1 uses this information to update an internal clock After reset the content of the internal clock is invalidated and are therefore not used When a message Is received including this information the internal clock is updated to the value indicated by the network and is then kept running When this date and time information is not available a dummy string of question marks is substituted for the date and time in the CLI message These services can be selectively enabled by setting parameter 8 CLI on standard calls or parameter 7 CLI on waiting calls in configuration register N9 5 4 2 Fixed Destination Call This service allows a user to place a call to a selected number without any dialling If the user goes off hook but does not dial any digit within a certain time then the NT IP automatically calls the selected number 5 4 2 1 User procedures Configuration register 3N holds the required parameters for either port The first two positions are set to 0 to disable the service If not set to zero these digit contains a value 1 to 30 which represents the number of seconds for the timer The following digits are used for the fixed destination number This service must be enabled using position 1 of register 5N This register is reserved for the operator and can therefore only be accessed via remote c
51. ific Supplementary Service can be implemented using of the Functional Protocol or the Keypad Protocol 2 3 2 Additional telephony services The a b ports also provide for a number of additional services such as generation of Calling Line Identification CLI display services based on on hook ETS 300 659 1 and off hook ETS 300 659 2 data transmission protocols The internal modulators meet the ITU T Recommendation V 23 for the forward data transmission channel distinctive ringing patterns in order to discriminate incoming calls based on the called party number timed fixed destination call using a pre registered number e g emergency or telco help desk calls incoming call pick up i e answering an incoming call ringing on the other a b port wake up calls 2 4 The SO interface On the S interface the NT IP provides the same quality of service of a standard NT1 allowing the connection of up to 8 TE s in any bus configuration short extended and a complete transparency to test procedures from the exchange Standard PS1 phantom supply is provided to the So bus when local ac power is available 7 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 3 INSTALLATION The NT IP can be wall mounted or it can be used in a table top installation 3 1 Connections The followings connections are provided in the back panel So bus two modular RJ 45 ISO8877 connectors 8p 4c POTS two screw term
52. inal block or optionally two modular RJ 11 connectors 6p 2c RS232 port 25 pin female D type connector Line pair U one screw terminal block or optionally one modular RJ 45 connectors Power supply Four pole plug USE ONLY THE AC ADAPTER SUPPLIED WITH THE UNIT NEVER CONNECT ANY OTHER EQUIPMENT TO THE POWER SUPPLY PLUG 3 2 LED s The following status monitoring LED s are located near the front panel PWR AC power supplied U Line interface connected remote power sensed DTR Data Terminal Ready C108 DCD Line status or Carrier detect C109 CTS Clear to Send C106 TD Transmit Data C103 RD Receive Data C104 s a b port 1 hook status n a b port 1 hook status 8 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 3 3 RS 232 Connector The NT IP is equipped with a standards 25 pin DB female connector ISO 2110 The following connections are provided An adapter cable with a DB 25M and a DB 9 is provided with the following connections DB 25M DB 9M DCE DTE C103 C104 C105 C106 C107 C102 C109 C108 C125 3 4 Switches Two dip switches are located on the bottom side of the device They are used to select the S bus configuration short passive extended include terminating resistors for the S bus 100 Q 50 Q off All other settings are made via configuration procedures 3 5 Accessories The NT IP is supplied with the AC power adapter Aa
53. ion mode Then click Next 6 Choose the appropriate Communication port and click on Next The following drivers INF files are available for the Windows 95 and Windows NT 4 0 environment single link PPP this only allows for 64 kb s single link PPP operation multilink PPP this allows for 128 kb s PPP operation and depending on specific AT commands bandwidth on demand call bumping and use of BAP BACP V 120 async to sync HDLC 6 2 Hardware installation 1 Connect the a c adapter to the NT IP and verify that the PWR LED on the NT IP is ON 2 Connect the RS 232 port to the COM port of your PC using a DB 9 DB 25 adapter cable if needed To verify that the RS 232 is properly connected use the Hyper Terminal program supplied with Windows 95 may be used to exercise the NT IP with AT commands To ease installation the NT IP supports automatic recognition of the PC speed up to 230 4 kb s during the command phase of the AT command Plug amp Play operation 6 3 Configuration Parameters Except for AO and A9 these commands can only be reached using the configuration program supplied by Aethra All S registers in the format xx zzzz 06 read port status same as POTS MSN 12 this mode is only used when the NT IP is used to remote configure another NT IP 34 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 Subaddress DO buffer length BOP j
54. ion speed of 128 kb s The main purpose of MP is to distribute transmitted PPP packets over the channels in the bundle and to recombine received packets into a single logical flow The NT IP makes the use of MP transparent to the user s PC i e the user s PC is unaware of all the operations required to establish and release additional calls and to co ordinate packet flows on the channels Basically from the PC point of view a single link exists with a higher throughput than if a single B channel were in use PPP is described in RFC 1661 The CHAP authentication protocol is described in RFC 1994 MP is described in RFC 1990 BACP BAP are described in RFC 2125 8 1 Asynchronous HDLC to synchronous HDLC conversion Personal computers use the asynchronous serial interface to exchange PPP packets These packets are contained in character oriented HDLC frames The NT IP provides for conversion between such frames and bit oriented synchronous HDLC frames suitable for transmission over the B channel to communicate to access routers at the ISP 8 2 PPP operations 8 2 1 Configuring PPP operations The AT command used to enable PPP operation is the following ATB40 enable async to sync PPP In order to use PPP the proper modem driver must be installed and the destination you are calling e g an access server at an Internet Service Provider must also support PPP 8 2 2 Placing a single link PPP call The PC instructs the NT IP to place a ca
55. is required in outgoing calls or when requesting some supplementary services 2 3 1 Supplementary services Most ISDN supplementary services are related to the deployment of advanced telephony services e g call waiting call forwarding calling line indication etc and from the user s perspective bear a close resemblance to the corresponding services provided by the analog networks The NT IP supports a large number of such services For these services the NT IP supports the ETSI Generic Functional Protocol ETS 300 196 1 and the relevant service specific signalling ETS and it provides for the necessary mapping between these protocols that describes user network signalling and the various procedures available to the user in order to operate the service The NT IP also supports the Generic Keypad Protocol according to ETS 300 122 1 to access supplementary services based on stimulus procedures These procedures are often used to implement supplementary services according to national specifications This protocol is much simpler and it basically results in the keys pressed being transparently transmitted as keypad information to the switch where all the processing takes place The NT IP makes it completely transparent to the user what kind of protocol has to be used to obtain a specific supplementary service The user only presses the same key sequence required when connected to the POTS NOTE Based on customer specifications a spec
56. ll using the ATD command A link configuration phase is started as soon as the physical link is established The NT IP intervenes in the initial configuration process to locally negotiate the Asynchronous Control Character Map ACCM configuration option This option is locally negotiated with the PC in order to increase the throughput on the B channel by avoiding transmission of unnecessary escape codes on the B channel 3 8 2 3 Authentication When the link has been configured an authentication procedure is started using a protocol negotiated during the link establishment phase The NT IP provides two modes for handling authentication 13 The PC only requires some characters e g X ON and X OFF to be control escaped when sent by the peer If the ACCM option is not negotiated locally the PC assumes the default condition is in force and all 32 control characters codes 0x00 to 0x1F are control escaped before being transmitted to the NT IP 44 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 server PAP is locally negotiated between the NT IP to the local DTE The username password included in the PAP authenticate request from the local DTE are cached by the NT IP and then depending on the protocol negotiated between the NT IP and the access server it is used for PAP authentication or to handshake CHAP MD5 The authenticate request on the initial link is passed to the access server mode 2 S87 2 0 Authenticate
57. n alarm call the user dials 55Thhmm to deactivate a specific alarm or 55 to deactivate all alarms The user receives a voice announcement for confirmation or rejection Interrogation of alarm status is accomplished using T 55Thhmm to interrogate a specific alarm or T 55 to interrogate all active alarms Alarm times are indicated for every alarm call 5 4 4 Distinctive Ringing This service allows the user to receive different ringing patterns for incoming calls based on the called MSN contained in the call set message 5 4 4 1 User procedures For either port the user associates a specific ringing pattern to each of the three available MSN s To this purpose positions 4 5 and 6 of configuration register 4N allows for pattern selection Patterns use values 0 to 5 0 1 00N 3 0 OFF 0 4 ON 0 2 OFF 0 4 ON 3 0 OFF 5 4 5 Delayed clear back This service allows a user with an incoming call active to go on hook and to resume the call form another phone connected to the same a b port 5 4 5 1 User procedures When this feature is enabled by setting position 4 of register N9 to the value 1 the NT IP postpones the clearing of incoming calls for duration indicated in parameter 6N default value is 60 sec so that the user is allowed to move the phone to another socket or to resume the call from another phone Delayed clear back is automatically disabled when more than one call are associated at the a b port e g a call
58. not properly process such abbreviated MSNs 3 ETS 300 196 1 and other services specific ETS 4 Depending on the switch implementation a service e g call forwarding can be supported either by a functional or the keypad protocol Furthermore when using the functional protocol some variants may exist among different switch technologies or in option offering policies by the operator These differences have an impact on the NT IP and some country specific fine tuning may be necessary for proper operation 9 additional checks are performed to assure that the call is compatible with the port profile speech audio fax 23 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 5 3 2 Calling Line Identification Presentation CLIP This service allows the called subscriber to receive information regarding the identity telephone number and possibly subaddress of the calling party The calling user may either provide the calling number in this case the number is screened verified and formatted by the network or the network itself uses the default accesses number No checks are performed instead on the user provided subaddress which is transparently passed to the called user The service is activated or deactivated by the network operator and therefore no user procedures related to the service deployment 5 3 2 User procedures At the calling site the NT IP includes in the outgoing call set up message the
59. nt or an audible tone will confirm the successful outcome of the request Replace the handset to deactivate K Lift the handset DBEUE F dial a voice announcement or an audible tone will confirm the successful outcome of the request Replace the handset to interrogate the status of the service K Lift the handset BEGUE F dial the status of the service and the destination number will be announced Replace the handset 10 7 3 Call forwarding on no reply to activate 55 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 K Lift the handset F dial BORE enter the number where you want your call to be transferred then dial H a voice announcement or an audible tone will confirm the successful outcome of the request Replace the handset to deactivate K Lift the handset LIE F dial a voice announcement or an audible tone will confirm the successful outcome of the request Replace the handset to interrogate the status of the service K Lift the handset DHDEE dial the status of the service and the destination number will be announced Replace the handset 10 7 4 Fixed Destination Call K Lift the handset HEEH to enter the destination number dial enter the destination then dial H a voice announcement will confirm the successful outcome of the request 56 59 o2 aethra TELECOMUNICAZIONI Aethra N
60. om the server as a Callback Reguest Upon receiving this packet the NT IP replies with an Ack response if resources are available i e the NT IP is not already using two B channels and attempts to establish the call using any Phone Delta information included in the request packet In either case when the call attempt is completed the NT IP transmits a Call Status ndication packet indicating the result of the call attempt either successful or reporting the Q 931 cause in case of failure The NT IP does not include the retry action and will not retry to establish the call until the conditions to add a channel are newly satisfied i e the add persist timer is restarted 8 4 3 2 Hemoving a link using BAP When the traffic conditions for removing the additional channel the NT IP transmits a Link Drop Query Request indicating the link discriminator of the link deemed to be dropped If the Link Drop Query Hesponse indicates Nak or Full Nak the NT IP restarts the subtract persist timer and does not take any further action 49 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 If the Link Drop Query Response indicates Ack the NT IP starts the link termination procedure as described in 8 4 1 2 Upon receiving a Link Drop Query Hequest the NT IP transmits an Ack response if its transmit traffic has been below the add threshold for at least half the add persist time If the transmit traffic has exceeded the ad
61. onfiguration The user can program the fixed destination number by going off hook and dialling T53T4567890 where 4567890 represents the new fixed destination number Interrogation of the actual value of this number is possible by dialling T4531 5 4 3 Alarm Calls This service allows the user to schedule an alarm call at a certain time of the day The alarm time must be at least 10 minutes ahead of the current time Up to three alarm calls per port can be scheduled with a minimum difference of 5 minutes between calls When the scheduled time for an alarm call is reached then the NT IP rings the a b port If the alarm call is not answered or meets busy the call is repeated once after 5 minutes When the alarm call is answered a congestion tone is generated until the user goes on hook 5 4 3 1 User procedures This service must be enabled using position 2 of register 51 for port 1 and 52 for port 2 This register is reserved for the operator and can therefore only be accessed via remote configuration To schedule an alarm call the user dials T55Thhmmf 11 the value of the FDC timer can only be modified in configuration mode 31 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 where hh mm represents the alarm time The user receives a voice announcement for confirmation or rejection The request can be rejected if three alarms are already active or if time constraints are not met The deactivate a
62. or fax devices 5 3 13 Explicit Call Transfer ECT This service enables the user with two ongoing calls one active call to A and one held call to B to request the network to join user A and user B in a single call If the request is successful the requesting user is then disconnected while user A and user B remain connected 2 3 13 1 User procedures In the NT IP the ECT is requested by pressing R 4 when a call is active and another call is on hold this also includes when the 3 PTY service is active 5 3 14 Call Forwarding Services CF These services are used to instruct the network to divert incoming calls to a different number Three different types of service are provided call forwarding unconditional CFU all call are diverted call forwarding busy CFB calls are diverted if they meet busy call forwarding no reply CFNR calls are diverted if no reply is obtained from the called user If the user s access has the MSN service then the services can be activated on a served number basis or for whole access i e independently of the called number This feature may not be available on a general basis i e it may require a specific subscription by the served user or it may not be offered by the network provider Additionally separate requests can be issued for different bearer services e g audio speech and data This feature may not be available on a general basis In any case the user can submit
63. owed by the audible tone indicating the ready state If the entered index is a valid one then the user is prompted with a message enter the parameter value 4 2 5 1 Modify commands The new value can now be entered followed by the key Valid operations are confirmed via the message the parameter value x is lt y gt where x and y represent the address and the assigned value If the assigned value is incorrect the following message is given wrong entry The configuration mode can be interrupted at any time by going on hook 4 2 5 2 Head Commands The current value of the requested parameter is indicated via the message the parameter value x is lt y gt 12 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 4 3 Description of configuration parameters The NT IP has a number of user programmable configuration parameters contained in a non volatile memory Some parameters such as operating mode access configuration remote configuration numbers etc refer to the system as a whole Other parameters such as assignment of network numbers port profile activation of call waiting generation of metering impulses delayed clear back level setting etc are specified for each a b port 4 3 1 General configuration parameters PARAMETER INDEX VALUES DEFAULT point to point fixed TEI 00 63 P TEI assignment 02 multi point multi point dynamic
64. perator configuration allows for complete control over all the operating parameters Hemote configuration Remote configuration can also be accomplished in two ways tone based using key sequences from a DTMF phone connected over the ISDN with voice announcements guiding the configuration process PC based from a remote PC port running MS Windows 956 Windows NT 4 0 or later The PC connects to the NT IP over the ISDN via another specially configured NT IP or an Aethra TA1008 terminal adapter Remote configuration calls are accepted based on following criteria the CLIP service must be active on the access where the NT IP is installed i e the calling party number must be available in the call set up message the Calling Party Number contained in the call set up message matches with one of the registered configuration numbers contained in configuration registers 70 to 89 OR the Called Party Subaddress contained in the call set up message matches with the registered configuration subaddress register 90 Up to 20 remote configuration numbers can be registered within the NT IP The proper remote configuration process is started based on the bearer service indicated in the call set up message the tone based requires a speech or audio call while the PC based process is activated through a data call Local configuration operations related to the RS 232 port can be only be configured using AT commands 10 59 c2
65. presentation on normal calls on hook transmission and the CLI on waiting calls off hook transmission 4 3 2 3 5 Voice or tone to confirm CF services This parameter allows the user to choose between audible tones or voice announcements to confirm activation and deactivation of Call Forwarding services Audible tones may be required when using special phone sets that decode the confirmation or rejection tones usually provided on POTS networks when requesting CF activation or deactivation 4 3 2 4 POTS register 3 FDC 3N This register holds the timed delay and the target number for the fixed destination calls FDC Separate values are stored for either port FDC disabled 00 1 call delay disabled delay value 1 01 30 target FDC address called number Table F POTS register 3 FDC 3 2 9 5 5 5 3 3 3 3 to program a b port 2 to generate a FDC to the number 555 3333 ten seconds after going off hook As an example use The destination number can be modified by a keypad procedure outside configuration Any modification will be reflected in this parameter 4 3 2 5 POTS register 4 4N deactivated l 1 Reminder ringing of held call o deactivated activated ES Activation of Waiting call disabled 2 5 ringing pattern associated to 2 MSN ringing pattern ID 0 to 5 6 ringing pattern associated to 3 MSN ringing pattern ID 0 to 5 no presentation id 7 CLIR service presentation res
66. r as for the first establishment if BOD is enabled add persist value is not zero the additional call is placed based on traffic statistics being collected during and after the speech call nevertheless a minimum of 10 seconds since the speech call has been cleared must elapse before the additional data call is placed when BOD is disabled the add persist value is zero the additional call is started 10 seconds after the speech call has been cleared For the duration of the voice calls the NT IP does not process any other incoming call unless the connection to the access server on the original channel is terminated Call Bumping does not obviously apply to a second voice call i e the user on the other a b port is not allowed to place calls 8 4 2 3 Diagnostic calls Call bumping also applies to remote diagnostic calls occurring during MP operation Such a call takes precedence over PPP calls and therefore it is answered after the additional link has been terminated and the supporting physical connection has been disconnected After the diagnostic call has been disconnected the NT IP attempts to re establish the additional link 8 4 3 THE BANDWIDTH ALLOCATION PROTOCOL When using BOD as described in 8 4 1 bandwidth is added or removed based on some user defined traffic thresholds internal to the NT IP or to the PPP server on the other side Furthermore the NT IP must know in advance the telephone number of the additional
67. r the telephone line The NT IP has a standard 25 pin female connector for straight connection to a PC COM port equipped with the following circuits 103 TXD 104 RXD 105 RTS 106 CTS 107 DSR 108 DTR 109 DCD and C125 RI The RS 232 port operates up to 230 4 kb s with automatic bit rate recognition autobaud Port configuration and operation such as call control are carried out through an advanced AT command set compatible with any standard communication software 2 3 The a b ports The a b ports support both pulse and DTMF dialling Local tone generation dial tone congestion and call waiting is provided when required Register recall or hook flash keys are also supported to invoke Supplementary services Additional analog signalling functions such as metering pulses delayed clear back and forward clear indication using a locally generated congestion tone are provided Each a b port can be allocated one two or three telephone numbers also called directory numbers DN If no number has been programmed for that port incoming speech and audio calls will be offered to the 6 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 port independenily of the called party number If instead one or more DN are programmed then only the calls directed to one of the these numbers will be offered The first DN associated with the POTS interface is also used when indication of calling party number
68. r to accept a waiting call without releasing the currently active one When one call is active and another one is held the user can then switch between calls or activate other supplementary services such as Three Party or Explicit Call Transfer 5 3 9 1 User procedures With NT IP the user can place an active call on hold by and then start a new call by pressing the R key waiting for the dial tone and then dialling the new number Once the second call is established the user can clear the call nod Ro clear the active call and resume the call on hold R1 switch between cals R2 starts a three party conference R3 request the explicit call transfer R4 When the user goes on hook and a call is still on hold a programmable feature of the NT IP allows the user to be notified of the call still on hold reminder notification of held call register 4N position 1 see 4 3 2 5 If this feature is enabled the POTS will start ringing when the user goes on hook and it keeps ringing for 60 seconds If the user goes off hook during this time the held call is automatically retrieved and the conversation to the held party is re established When this time expires the held call is disconnected If the feature is disabled when the user goes on hook both the active and the held call are immediately disconnected 5 3 10 3 Party Conference 3 Pty This service enables the user with two ongoing calls one active and one in the held
69. st MSN assigned to the port The activation deactivation and interrogation requests can also explicitly contain a served user number e g T21T8765432T2345678 requires activation of CF from number 8765432 to the number 2345678 The same holds for deactivation 21T876543 2 or interrogation T21T8765432 If the first MSN is not assigned and no served user number is included in the request then the all number version of the request is used In all cases the request is issued for all services To deactivate the CFU service the user goes off hook and dials 2 1 The user is informed on the outcome of the activation deactivation or interrogation requests either by a voice announcement or a tone by setting position 9 on register N9 to 0 or 1 see 4 3 2 3 The user can also interrogate the network on the activation status of the CFU by going off hook and dialling T H21 A voice announcement or a tone informs the user about the status of the service If the voice announcement are used the user is also informed about the served user number and the diverted to number 0 Procedures for CFB and CFNR services are similar to the ones described for the CFU except for the service code 21 changing to 61 for the CFNR and to 67 for the CFB 5 4 Additional services The following services do not strictly rely on network provided supplementary services but they are instead implemented locally and do not cause transactions wit
70. tatistics Good Frames oH Bad Frames Overflow Aborted Frames Frames too long Discard Frames Frames Underrun B Channel HDLC statistics Good Frames Bad Frames FIFO Overflow Overflow Aborted Frames Frames too long Discard Frames Frames Underrun PERE R RR ER RRR ERE FJ x ooo ooo oo ooo O H x 7 6 ATXn result code Option Table CONNECT messages issued by the NT IP at call establishment can have different format as indicated by the following table As an example if ATX5 is active and a V120 call is established using the B channel the NT IP sends a CONNECT 115200 V120 64000 LAPF message to the DTE 0 jOK v Vvyj vyi v v vj voyv 41 59 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 2 FRING CUE VE VP VE VE VT Vv vij 3 NOCARRIER V V V Vv Vv v v 4 TERROR V V Y V vv 6 JNODALTONE vj V VJ eV UV 7 BUSY CVV VV v 8 J NOANSWER vjvj vj vj vij 1 CONNECT _ V j J J j 10 CONNECT2400 Q 11 CONNECT480 QU 12 CONNECT9600 Q 17 CONNECT 14400 Q 14 CONNECT 19200 96 Q 39 CONNECT28800 Q 19 CONNECT3840 Q 20 CONNECT57600 9 Q 21 CONNECT 400 1 22 CONN
71. the S bus in restricted power mode however regular operation of the S bus i e activation communications etc is guaranteed Power consumption in restricted power conditions from the network is limited to 1 7 W thus allowing a greater range even with low voltage supply 2 2 The RS 232 Port When using its COM port to access an Internet Service Provider your PC uses the standard Point to Point Protocol PPP with an asynchronous transmission format asynchronous PPP When operating in the single channel PPP mode the main function of the NT IP is to operate as a format converter between the asynchronous format on the PC side at various speeds and the synchronous format at a fixed speed of 64 kb s used on the ISDN channel When operating the Multilink PPP MP protocol the NT IP also provides for all the operations required to establish an additional link to split and recombine the traffic between the channels and makes it completely transparent to the user s PC the use of MP The V 120 operating mode provides for a error protected high speed transmission channel over a single B channel V 120 mode can be used for many applications such as remote access RAS to a corporate server To guarantee a safe and proper operation in any environment the RS 232 port is optically insulated from any other port of the NT IP This basically avoids any risk of coupling electrical noise or even dangerous voltages from the PC onto the phone sets o
72. tial and the additional channels The access server uses this EID to associate a PPP link to a specific endpoint and therefore either creates a new bundle or adds this link to the bundle to the same end point The use of EID is optional but it may be required by some MP implementations at the server side Class values are assigned as follows Length 0 Null Class O the default value if the option is not indicated Locally Assigned up to 20 a local assignment e g a device serial number 3 MACAddess 6 sf am IEEE 802 1 MAC address Use of class 1 and class 4 is deprecated by the MP standards and should be avoided The EID Address field can be assigned by the ATEPD command ATEPD OFF indicates that no EID has to be included in the configuration This is the default value ATEPDc Octet 1 Octet 2 Octet 3 Octet n where c indicates the selected class 0 to 5 and each Octet i is in the range from 0 to 255 The angle brackets and gt are part of the this command 14A subsequent call is attempted after 60 seconds 46 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 ATEPDc ascii string where c indicates the selected class 0 to 5 and ascii string is a string of ASCII coded character which are transparently passed to the EID The first character in this ascii string must be not be an opening angle brackets lt The command ATEPD can be used to vi
73. to update its internal clock After reset no such information is maintained until the internal clock is synchronized to date and time provided by the network 4333 Default reset commands These commands are used to reset all configuration parameters to the factory default values NOTE remote configuration numbers are not affected by these commands 4 3 4 Examples of configuration procedures 4 3 4 1 Programming a b port registers To deactivate a b port 2 if not connected to any terminal phone or modem 2 9 0 9 9 9 9 Or 2 9 0 To configure a b port 1 as speech audio 1 9 1 9 9 9 9 Or MBEHBE To configure a b port 2 as telephone i e only a phone is connected to the a b port 19 39 o2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 ele elole ol DEDEEE To activate the pulse generation for a b port 1 MBDOBDEBOD Or Or MBEHDDH To deactivate the pulse generation for a b port 2 2 9 9 9 0 9 9 Or MEEBEEUM 4 3 4 1 2 Delayed clear back To activate the clear back feature for a b port 2 HHEH EEE RE BMEBEBMEBBEHB To program a b port 1 for high audio levels recommended option when modems are used a 9 9 9 9 9 0 To program a b port 1 with low audio levels MBDOBDEDOB 4 3 4 1 4 An example of complete programmin Or 4 3 4 1 3 Audio levels The command MBDHBEBBHE will progr
74. tricted 1 no presentation ID presentation allowed 8 COLR service no presentation id 0 no presentation ID E o IEM EN 4 ringing pattern associated to 1 MSN ringing pattern ID Oto 5 O patemo EE 85 KE 0 EE 17 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 presentation restricted presentation allowed Table G POTS register 4 4 3 2 5 1 Reminder ringing of held call If a call on hold exists when the user goes on hook and this feature is enabled the a b port will ring to remind the user of the held call 4 3 2 5 2 Waiting calls When enabled by this parameter the user receives an audible tone when a call is waiting or when a compatible call is received but the relevant a b port is busy This allows the user to take the call after clearing or holding the current call 4 3 2 5 3 Ringing patterns This feature allows the user to distinguish calls to different MSN based on the ringing patterns 4 3 2 5 4 CLIR and COLR Allows the user to include presentation restricted or presentation allowed in a outgoing messages resp set up and connect messages 4 3 2 6 Special Service Enables 5N This register can only be accessed via remote configuration Using this register the operator can selectively enable the relevant special services Fixed Destination Calls Call Capture Alarm Calls disabled 0 Fixed Destination Calls BE enabled enabled
75. ubscriber CFB e call forwarding on no reply CFNR e explicit call transfer ECT call completion services e call hold HOLD e call waiting CW multiparty services e three party conference 3PTY community of interest services e closed user group CUG charging services e advice of charge AOC 5 2 User procedures The use of some supplementary services such as MSN CLIP and COLP do not require any user procedure They are made available on a general basis or by arrangement with the service provider and no action is required to activate deactivate or invoke the service Some services e g call forwarding procedures must be explicitly activated and deactivated by the user and then they are automatically operated when needed e g when an incoming call meets the conditions for being forwarded These services also usually support a status interrogation procedure Other services e g 3 party conference MCID require instead an explicit invocation by the user to operate To operate these procedures when using NT IP the user usually presses a sequence of keys starting with or fon the phone keypad and in some cases precedes this sequence by the action of the register recall RR or hook flash HF key These procedures usually mimic those used in POTS networks for the equivalent services 22 59 c2 aethra TELECOMUNICAZIONI Aethra NT IP User s Manual sw rev 2 0 The NT IP therefore provides for the necessary mapping between such P
76. us N SeeTableC PortStatus o POTS register 1 N7 jSeeTabeD POTSregsteri POTS register 2 N9 jSeeTabeE POTSregster2 Fixed destination call 3N _ See TableF POTS register 8 FDC POTS register 3 4N SeeTableG POTSregister4 Special Service Enables _5N See Table H Special Service Enables 6N 800 Delayed Clear back duration 6N value of delayed clear back duration 1 120 Table B Port specific registers 4 3 2 1 Port Status N6 0 IDE Table C Port Status 13 29 c2 aethra TELECOMUNICAZIONI Aethra NT IP Users Manual sw rev 2 0 4 3 2 2 POTS register 1 N7 Tone diali pulse and tone PM pulse and Ed tone Moneonly tone Recall flash key disabled enabled Table D POTS register 1 4 3 2 3 POTS register 2 N9 SUB PARAMETER VALUE deactivated port profile speech audio deactivated generation of metering pulses activated deactivated delayed clear back activated DEFAULT speech audio high level audio level 9 low level disabled polarity inversion enabled presentation of CLI on disabled waiting calls off hook enabled presentation of CLI on disabled incoming calls on hook enabled voice or tone to confirm CF and CW tones Services announcements Table E POTS register 2 D x lt 4 3 2 3 1 Port Profile Each a b port can be set according to the type of analog terminals connected The following settings are possible speec

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