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Service Manual

1. lt Office where DATU RT lt DATU RT Access RT is located gt number gt Elm St 1056 1201 1500 lt A DLC sicos RMU at C3Pinet sesia N gt emoe in this cable and pair group gt Oak St Vault 103 1 9999 DMS1U RMU 1 Justenter oe iai1 N a star for all counts SLC96 lt Geo 52nd St 1056 1501 1700 555 2222 Code gt Cabinet Industrial Park 17 1 9999 DMS1U lt Geo Ka Just enter 555 2222 a star for all Code gt counts An MLT test of a customer s line in this instance is accomplished via the Metallic Bypass Pair from the DLC Remote Terminal to the LTS at the CO see Figure 3 2 A MAU may be placed in the test path eliminating the effect of the bypass pair which occurs when conditioning is performed at the CO end of the bypass pair In Figure 3 2 Pair Gain System ID 1056 is a Split Pair Gain System with Pair Count Start 1201 Pair Count End 1500 MAU 1 Location Elm St Pair Count Start 1501 Pair Count End 1700 MAU 2 Location 52nd St Pair Gain Systems 103 and 17 are not split 3 14 Programming System Functions DATU RT DATU RT Testing with Split Pair Gain Systems DATU RT accesses multiple MAUs within a single Pair Gain System e g PG1056 in the examples on the previous page The craftsperson need only supply the DATU RT with the Pair Gain System Cable Identifier and the cable pair is being worked on DATU RT uses the split Pair G
2. 2nd Key 1st Key 1 2 3 4 5 1 space period comma hyphen slash 2 A B o 3 D E F 4 G H l 5 J K L 6 M N O 7 P R S Q 8 T U V 9 Ww X Y Z 6 Enter any trailing numbers that are part of the Pair Gain System ID 7 Any combination of letters and numbers may be entered in this manner Repeat the appropriate steps as necessary 8 Enter a single star to complete the Pair Gain System ID entry Menu Item Selection Note Audio Monitor is functional on a Carrier System only if the line is busy 4 22 Selecting Line Preparation Functions DATU RT functions are presented in a menu format through voice messages Main Menu functions are announced as follows DIAL 2 FOR AUDIO MONITOR DIAL 33 FOR TIP RING SHORT TO GROUND DIAL 37 FOR RING GROUND DIAL 38 FOR TIP GROUND DIAL 44 FOR TIP RING HIGH LEVEL TONE DIAL 47 FOR RING HIGH LEVEL TONE DATU RT DATU RT a DIAL 48 FOR TIP HIGH LEVEL TONE a DIAL 5 FOR LOW LEVEL TONE a DIAL 6 TO OPEN SUBSCRIBER LINE a DIAL 7 TO SHORT SUBSCRIBER LINE a DIAL STAR TO KEEP TEST AFTER DISCONNECT a DIAL POUND FOR NEW SUBSCRIBER LINE If two or more options are associated with the selected function a corresponding submenu is announced after the Main Menu item is selected Table 4 1 presents a listing of both Main and submenu functions with their assigned keypad digits Note the correlation between the names assigned to certain Main Menu functions and the stand
3. e 3 Monitor the line as required Audio Monitor is automatically disabled at regular intervals to insure that the DATU RT is able to detect DTMF tones if an exceptionally strong audio signal is present This occurs at regular six second intervals and is of approximately two seconds duration Short to Ground Keypad Digit 3 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE The Short to Ground function is used to connect the Tip Ring or both leads to Ground potential If only a single lead Tip or Ring is selected the opposite lead is unterminated 1 Momentarily press 3 on the telephone keypad 2 The DATU RT issues the following submenu prompt a DIAL 3 FOR TIP RING SHORT TO GROUND b DIAL 7 FOR RING GROUND c DIAL 8 FOR TIP GROUND 3 Momentarily press the key corresponding to the desired subfunction 4 The DATU RT identifies the selected subfunction with one of the following voice messages TIP RING SHORT TO if submenu item 3 selected GROUND RING GROUND if submenu item 7 selected TIP GROUND if submenu item 8 selected The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released The DATU RT does not remain in the Short to Ground submenu after the sub
4. Main Item Function ae sis ie Announcing Main Menu 1 Short to Ground Earth 3 DEF 3 Tip and Ring to Ground Ring to Ground 7 PRS Tip to Ground 8 TUV High Level Tone 4 GHI 4 Tip and Ring Tone Ring Tone with Tip Grounded 7 PRS Tip Tone with Ring Grounded 8 TUV Open Subscriber Line 6 MNO Short Subscriber Line 7 PRS DATU RT Selecting Line Preparation Functions 4 15 The following explains the selection and use of the functions available in the Single Line Access mode Announce Main Menu Keypad Digit 1 Selection of this function causes the DATU RT to announce it s Main Menu If selected while in a submenu DATU RT announces ERROR followed by the Main Menu 1 2 Momentarily press 1 on the telephone keypad The DATU RT announces it s Main Menu Short to Ground Keypad Digit 3 The Short to Ground function is used to connect the Tip Ring or both leads to Ground potential If only a single lead Tip or Ring is selected the opposite lead is unterminated 1 2 Momentarily press 3 on the telephone keypad The DATU RT issues the following submenu prompt a DIAL 3 FOR TIP RING SHORT TO GROUND b DIAL 7 FOR RING GROUND c DIAL 8 FOR TIP GROUND Momentarily press the key corresponding to the desired subfunction The DATU RT identifies the selected sub function with one of the following voice messages TIP RING SHORT TO if submenu item 3 selected GROUND RING GROUND if
5. Enter the System password again It must be repeated exactly If the first and second entries match DATU RT will respond DIAL POUND IF OK If the entries don t match DATU RT will respond ERROR and return to Main Menu Enter and select a new item from the Main Menu Setting User Password To set the User password 1 Enter 1 and DATU RT will respond DIAL ONE TO SET SYSTEM PASSWORD DIAL TWO TO SET USER PASSWORD Enter 2 and DATU RT will respond DIAL FOUR DIGITS Enter the new User technician password and DATU RT will respond REPEAT Enter the new User password again It must be repeated exactly If the first and second entries match DATU RT will respond DIAL POUND IF OK If the entries don t match DATU RT will respond ERROR and return to the main menu Enter and select a new item from the Main Menu 3 6 Programming System Functions DATU RT DATU RT Selecting Busy Test To select busy test 1 4 Enter 2 The DATU RT will respond DIAL ONE TO SELECT BUSY TEST DIAL TWO TO SELECT DIALING METHOD DIAL THREE TO SELECT TRUNK SLEEVE SENSING Enter 1 The DATU RT will announce DIAL FOUR TO SELECT STANDARD BUSY TEST DIAL FIVE TO SELECT 5ESS BUSY TEST DIAL SIX TO SELECT SPECIAL BUSY TEST Dial the appropriate code Use the 5ESS Busy Test for NEAX 61 and 5 ESS switches use the special busy test for DMS switches with integrated DLC and use standard busy test for all others The DATU RT will repeat
6. This section describes the method by which alphabetical letters may be entered using a standard 12 key DTMF keypad 1 Enter any leading numbers that are part of the Pair Gain System ID in the normal manner 2 Enter This key sequence places the RT system in a special mode in which alpha and certain other non numeric characters may be entered as a series of two digit key codes 3 The first key depression simply identifies the key on which the desired character is stamped or printed Press the key on which the character appears For example if character is A B or C press the 2 key 4 The second key depression identifies a single character from the group typically three letters selected with the first keystroke The character is identified by it s position on the key To select the first press 1 If the desired letter is the second of the three press 2 Press 3 if the desired letter is the third of the group DATU RT Selecting Line Preparation Functions 4 21 OO AA n aaa 5 Repeat Steps 3 and 4 for each alpha character in the Pair Gain System ID When the last character has been entered enter just as previously done in Step 2 This restores the numeric entry mode Special two key sequences are assigned to the letters Q Z and certain punctuation characters Table 4 3 identifies these special key combinations Table 4 3 Two Key Sequences Non Numeric Keypad
7. Bypass Pair DATU RT prompts for the availability of the bypass pair If there is a bypass pair to the remote site it should be programmed into the DATU RT by entering a star k If there is no bypass pair to the remote site enter a 0 Option Note A MAU may be placed in a remote site that is served by a DC test pair to allow for metallic conditioning of the customer s drop without having to consider the test pair s length to the serving CO By programming the presence of the test pair into the DATU RT the craftsperson has the option of which to use The DATU RT will condition with the MAU unless told to do otherwise and will prompt the craft to enter star gt to use the bypass pair if the DATU RT cannot establish contact with the MAU 7 RT Access Phone Number DATU RT prompts ENTER RT ACCESS PHONE NUMBER DIAL STAR x TO END This is the telephone number of the POTS channel unit assigned to the MAU at this location The phone number may be 1 to 11 digits long but will more than likely be a standard 7 digits If no MAU is installed enter 0 for the RT access phone number Dial Star to end this portion of the entry 8 Confirmation DATU RT reads back the entries made for this PGS ID then prompts DIAL POUND If OK If anything is incorrect or for any other reason the PGS ID is not desired simply hit any key except pound to cancel and return to the Main System Menu If however all the information is correct confirm it wit
8. ID PGS ID This entry is the identifier of a Pair Gain System ID that has previously been programmed into the DATU RT and you wish to read the pair count records e g Pair Gain system 1056 on Elm Street as seen in Figure 3 1 and Figure 3 2 If unsure of the exact PGS ID to be entered escape by entering pound and read all Pair Gain System Records see Figure 3 5 Enter star to end this portion of the entry 4 Pair Count Records DATU RPT will recite the entire Pair Gain System Record for this PGS ID Reading All Pair After accessing the DATU with the System password perform the following Gain System Records steps to read all Pair Gain System Records see Figure 3 5 1 Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options 2 Enter 3 to read all Pair Gain System Records 3 Reading Records DATU RT will recite the entries of all Pair System Records previously programmed Dial the DAT LAT Access Number Dial 9 Read or Change Pair Gain System Parameters Dial 3 to Read All sccememianseoeaaccocensoioesad Pair Gain System Records DATLLAT val start renting for Pav Gain System Recents me PGS iD at a bime DAT L RT Will Read the Records tor One PGS ID Then Prompt Dial Pound o Continue te AGS Dis elast one in the Pair Gar System Record DATU AT wil Fetuth to tre Whur benu Dial Found Read the
9. Short Subscriber Line Keypad Digit 7 The Short Subscriber Line function provides an electrical short across the subscriber s Tip and Ring leads 1 Momentarily press 7 on the telephone keypad 2 The DATU RT responds with the voice message SHORT LINE 3 When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Setting the Hold Time The hold time setting defines how long the selected line condition is maintained after disconnecting from the DATU RT The duration of the hold time interval is entered through the telephone keypad and is specified in minutes Any interval may be entered however the DATU RT will not maintain a line condition longer than the access timeout interval The selected line condition is automatically removed by the DATU RT when the specified time interval or if of a shorter duration the access timeout interval has elapsed 1 The DATU RT prompts for the Hold Time setting as follows DIAL NUMBER OF if access timeout interval is MINUTES 10 minutes or less DIAL 2 DIGITS FOR if access timeout interval is more NUMBER OF MINUTES than 10 minutes 2 Enter the desired hold time via the telephone keypad If the access timeout interval is set for 10 minutes or less this must be a single digit entry Entry of a 0 is interpreted as an entry of 10 minutes If the access timeout interval is set for greater than 10 minutes the Hold Time in
10. 0 DATU RT for 300 Baud or 1 2 0 0 for 300 Baud and 1200 Baud respectively 5 Confirmation DATU RT reads back the Baud rate and asks for a pound if this is OK The prompts are Baud Rate 0 3 0 0 DIAL POUND IF OK or Baud Rate 1 2 0 0 DIAL POUND IF OK Dial pound to confirm or any other key to abort the entry 3 26 Programming System Functions DATU RT Dial te DATU RT Aces Murnber Dial 9 Fead or Change Pair Gain System Pa rameters Dial amp to Set AT 0 System Baud Rate DATAT Will Frompt Alease Ermer Baud Fate Enter 3 0 0 Fora Baud or 20 0 For 1200 Baud DAT LEAT Will Recite the Enty ard Ask Fora Found TORK Dial Pound if OK EHT Any otter Wey pull cansa We operabor Figure 3 10 Setting RT System Baud Rate Time Outs and Disconnects The automatic time outs and disconnects provided by DATU RT are described below DATU RT Programming System Functions 3 27 Dialing a System or User Password The first digit must be dialed within 7 seconds after ring trip or the DATU RT will disconnect The elapsed time between digits dialed must be less than 7 seconds or the DATU RT will disconnect The DATU RT will disconnect after 7 seconds with no keys dialed or after the 16th incorrect digit if incorrect dial codes are attempted User Mode If the first digit of the subscriber line number is not dialed within 7 seconds or if more than 7 seconds
11. CO switch This Service Manual provides the description installation programming and operation of the DATU RT spaces Other models of the DATU may be upgraded into a DATU RT but the original DATUs part numbers 24800 002 through 008 are not upgradeable nor compatible with the RT System Pair Gain Applique IIS The PGA IIS is a printed circuit card that extends the DATU RT capabilities into the pair gain environment and serves as the interface between the DATU RT and the switch s Pair Gain Test Controller PGTC It determines the status of the PGTC and its metallic DC test pair provides carrier channel signaling and transmission test results and controls the DATU RT s access to the MAU The card is installed in the MFT frame and connected to the switch The Pair Gain Applique II SPOTS Service Manual provides the description installation and operation of the PGA IIS Earlier models of the PGA PGA I card are not compatible with the RT system Metallic Access Unit The MAU is a printed circuit card mounted in a protective metallic enclosure that provides the standard DATU RT line conditioning functions as directed by the DATU RT It eliminates the need for metallic bypass pairs from the switch to the remotely located Pair Gain terminal The enclosure is installed inside the cabinet housing the pair gain equipment The MAU Service Manual provides the description installation and operation of the MAU One DATU RT and one PG
12. PGTC FAILURE PGTC test circuits are busy or the PGTC cannot complete carrier system connections PAIR GAIN SYSTEM the Carrier System serving the ALARM selected line is in a major alarm condition CHANNEL NOT channel test results were not AVAILABLE provided by the PGTC BAD CHANNEL channel tests failed possible bad channel unit After a failure in carrier channel tests or in activating the PGTC the DATU RT remains in Menu Item Selection mode so that CO personnel may more easily determine the problem If one of the above error messages is heard however the DATU RT is probably not connected to the line to be tested Therefore line conditioning commands will be accepted and confirmed by the DATU RT but the condition may not necessarily exist on the line anytime after one of the above error messages is heard Remote Terminal RT Access To access a remote terminal 1 After the DATU RT has successfully accessed the subscriber line and acquired channel test results the DATU RT issues the voice prompt PLEASE ENTER PAIR GAIN SYSTEM ID DIAL STAR TO END 2 Enter Pair Gain System ID using telephone keypad To condition line from CO using the bypass pair enter 0 3 Use the Alphanumeric Pair Gain System ID Entry section if Pair Gain System ID includes alphabetic or punctuation characters Otherwise proceed to Step 4 4 20 Selecting Line Preparation Functions DATU RT eee If selected the bypass pair must be i
13. RT 2 After the initialization time of 10 seconds the state of the LEDs should be as shown below if not then go to Calling the DATU Checks Step 2 HI SLEEVE Off LO SLEEVE Off POWER On ALARM Off STATUS Flashing 3 If all LEDs are off check the power connections Battery 46 to 52 VDC on pin 11 and CO ground on pin 18 4 Ifthe ALARM LED is on and the High Sleeve and Low Sleeve LEDs are cycling on and off HI SLEEVE on and LO SLEEVE off for 10 seconds then HI SLEEVE off and LO SLEEVE on for second check the NTT sleeve relay connection The sleeve lead pin 12 to the NTT should not be at a ground potential 5 The DATU RT after three unsuccessful attempts to release the NTT has activated its alarm circuitry the ALARM LED is on and the alarm lead pin 6 is at CO ground potential When the DATU RT is accessed a TRUNK DISCONNECT ERROR message will be heard DATU RT will continue to test for the release of the NTT with the high and low sleeve current sequence When the NTT is released the DATU RT alarm will automatically clear 6 Ifthe status LED is not flashing replace the DATU RT Calling the DATU Checks Step 2 1 Call the telephone number assigned to the DATU RT 2 If there is ringing but the DATU RT fails to trip the Ring and provide a 440 Hz tone a Check the Tip and Ring lip on pin 17 and Ring on pin 19 on the access line 5 2 Troubleshooting Guide DATU RT A E b The DATU RT will not r
14. access line is a ground start line 5 4 Troubleshooting Guide DATU RT Fault Location Flow Chart Step 6 Note For technical assistance contact Harris Technical Support 1 Translate the NTT access to DATU RT exactly the same as the MLT access has been translated Use a separate Trunk Group Number for the DATU RT access 2 Configure the DATU RT access line for incoming ground start only 3 Complete all frame wiring in accordance with Section 2 Installation 4 Verify that the DATU RT is a DATU RT Model 24820 003 5 Install the DATU RT in the assigned MFT slot and observe the LEDs on the front panel of the DATU RT 6 Go to Flow Charts see Figure 5 1 and Figure 5 2 cn SlaueLED Bnk Yes HI amp loSkeve LEDs alemaaey li No hrm LED Ye On No To Next Pat F COBall amp Gd on DTU pine 114 res pedivey Yes Remove DA TUR Tito MFT Ad for ses and reindal Ok Gd on Sleeve DATU RT pin 12 MFT BS 1 B Side No 3 Qocass DATU RT in Sprem Furstores No Rephot DOTU B 3 menu and dearakm Aarm LEDo ff ties BET Ves Rem ove Grd source Golo rye DATU RT Figure 5 1 Fault Location Flow Chart Sheet 1 of 6 Troubleshooting Guide 5 5 From Previous Paq Dia the DATU RT aoe num ber Verify tette ip k he DATU RT access line Provide te Tip and Ring ofa functoral amp a Ves and Ring of te i configuration foe incom ing i inaming only gound
15. if an attempt is made to invoke this function on a busy line The Open Subscriber Line function removes Battery and Ground potentials from the subscriber s Tip and Ring leads 1 Momentarily press 6 on the telephone keypad 2 The DATU RT responds with the voice message OPEN LINE The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released Short Subscriber Line Keypad Digit 7 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE The Short Subscriber Line function provides an electrical short across the subscriber s Tip and Ring leads 1 Momentarily press 7 on the telephone keypad 2 The DATU RT responds with the voice message SHORT LINE 4 26 Selecting Line Preparation Functions DATU RT DATU RT The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released Permanent Signal Release Keypad Digit 9 This function is not available unless specifically enabled by the DATU RT administrator Unless enabled any attempt to use this function results in the error message ERROR PERMANENT SIGNAL RELEASE DISABLED Permanent Signal Release will function only on a line that the DATU RT
16. more options are associated with the selected function a corresponding submenu is announced after the menu item is selected Table 4 1 presents a listing of both main and submenu functions with their assigned keypad digits Note the correlation between the names assigned to certain Main Menu functions and the standard alphabetical arrangement of the telephone keypad Line preparation functions are selectable as soon as the DATU RT has determined the state of the subscriber line If the line is idle all functions are available If the line is busy the set of available functions includes only those that are not disruptive to calls in progress see Subscriber Line Status Functions may be activated in any sequence however only one function may be active at a time Selection of any menu item cancels the previously active function If an incorrect or invalid entry is made the current function if any remains in effect An Access Timeout feature limits the time during which line preparation functions are sustained or allowed to remain active The access time out interval is preset at the factory to allow the selected function to remain active for up to 10 minutes The factory setting also allows extension of this interval by simply selecting the same function again or if desired selecting a new function The parameters associated with the Access Time Out feature are programmable and accessible only by the DATU RT Administrator Selecting Lin
17. ofdgts Rets Service Manual and proceed fom 12 b A pand Ring riba bakncedline wit CO Eatery and Ground present Mext wil couse DOTU RT promptBusy Line Selectanoter line and Page proceed fom 2 Figure 5 1 Fault Location Flow Chart Sheet 5 of 6 DATU RT Troubleshooting Guide From Prenicass Jome A High lael tracing tone is High kvd tracing tore is No be the DATLL RT conmcected No Darel ao manent pl toa DS 100 10 snitch Frasenk on iho th Ti d Yes Ne Ves E he Metallic Test icons sagor ihon Tariao MILL PR 1 Coret wringbetwoon a a ade GS rer oe Yes wes Correct wiring betweon Ti R1 E Sido of High level trading tone is prozert on the MFT block and TR ofthe MT block Ti amp R1 B Side of the MPT Hock ard goto fiz No _ dacated hom BAR RT Boan Figure 5 1 Fault Location Flow Chart Sheet 6 of 6 Preliminary Checks 213 Eraro that the RT blo hasbeen od programm Establish User Moda socoas bo Iho Place a romal cal to the MOLI in the site to bo verified MOL should arewer with modem torr Have an individual at the remote dte to verify that the MAJ is conditioning the line sarcared DOTLLAT isreperting that the FGA II has not recognited 3 valid channel unt si The par gain line soceared must be a and working POTS Ine served on Pair Gain Firda good PG number and start at 1 You Clear the PIGTC failure andlor check the inhib load dabus in the CO of the colocated DLC sy
18. the PT proper conection tothe CTU testpair shouidbe able to see that shat on he Figure 5 2 Verifying DATU RT System Operations Sheet 2 of 2 DATU RT Troubleshooting Guide 5 11 This page intentionally left blank 5 12 Troubleshooting Guide DATU RT Specifications Contents Physical Dimensions 6 2 Electrical 6 2 Access Line Interface Ground Start 6 2 No Test Trunk Interface 6 3 Test Function Parameters 6 4 DATU RT Specifications 6 1 Physical Dimensions Length 8 0 inches Width 7 5 inches Height 2 0 inches Weight 1 7 pounds Electrical Battery Input Requirement measured with respect to CO ground 46 to 54 Volts DC VDC 600 mA maximum 2 volts peak to peak noise maximum from CO Access Line Interface Ground Start Tip and Ring Parameters in Off Hook Mode Meets FCC Part 68 requirements a Resistance is 120 280 ohms at 20 to 80 mA Minimum DC current required is 20 mA a Typical AC impedance at 1 kHz is 640 ohms Tip and Ring Parameters in On Hook Mode Meets FCC Part 68 requirements Minimum ring detect level is 65 volts AC rms a Uninterrupted pre trip Ring duration is 300 ms a Ringer equivalence is 0 5B Secondary Dial Tone Secondary dial tone is provided upon Ring trip password entry and new subscriber line selection Dial tone is silenced when a digit is dialed or when the DATU RT times out Dial tone level is 16 dBm 3 dBm Dial
19. the selection then prompt DIAL POUND IF OK Enter and select a new item from the Main Menu Selecting Dialing Method To select dialing method 1 4 Enter 2 The DATU RT will respond DIAL ONE TO SELECT BUSY TEST DIAL TWO TO SELECT DIALING METHOD DIAL THREE TO SELECT TRUNK SLEEVE SENSING DIAL FOUR TO SELECT BUSY TEST TIMER Enter 2 again and DATU RT will announce the available Dialing Method options Enter the appropriate code see Table 3 2 for options DATU RT will repeat the selected option and respond DIAL POUND IF OK Enter and select a new item from the Main Menu Selecting Trunk Sleeve Sensing To select trunk sleeve sensing 1 Enter 2 The DATU RT will respond DIAL ONE TO SELECT BUSY TEST DIAL TWO TO SELECT DIALING METHOD DIAL THREE TO SELECT TRUNK SLEEVE SENSING DIAL FOUR TO SELECT BUSY TEST TIMER Programming System Functions 3 7 E e Aaaa aaa 2 Enter 3 The DATU RT will respond DIAL ONE TO SELECT STANDARD TRUNK SLEEVE SENSING DIAL TWO TO SELECT SPECIAL TRUNK SLEEVE SENSING Dial the appropriate code Use special sleeve sensing for Stromberg DCO switches 3 Ifthe dial code 2 is entered the DATU RT will prompt DIAL ONE IF TRUNK SHARE DIAL TWO IF NO TRUNK SHARE If a Harris Trunk Share Applique is being used with the DATU RT dial 1 Otherwise dial 2 4 The selected sleeve sensing type will be repeated followed by DIAL POUND IF OK 5 Enter and select a new item from the M
20. two keys The first key depression simply identifies the key on which the desired character is stamped or printed The second key is the letter s position 1 2 or 3 on the key For example the letter E would be represented by the keys 3 2 the 3 key has the letters DEF on it and E is the second of the three letters Refer to Table 3 6 for the letters that don t appear ona telephone keypad such as Q or Z Programming System Functions 3 15 Table 3 6 Alpha Mode 2nd Key 1st Key 1 2 3 4 5 SPACE PERIOD COMMA DASH SLASH olalnN oala aAl ol nrm Sisal v z o o x c dD Z xX I m o lt lt Nl OoOj rj n O Example To enter a Pair Gain System ID of ELM04 1 The DATU RT requests the Pair Gain System ID 2 Enter to toggle into the letter mode 3 Enter 32 the three is for the button labeled 3 DEF and the two is for the second letter E of the group DEF 4 Enter 53 fifth button and third letter of group JKL 5 Enter 61 sixth button and first letter of group MNO 6 Enter to toggle back into the numeric mode 7 Enter 04 8 Enter to end Pair Gain System ID Setting Pair Gain After accessing the DATU with the System password perform the following System Records steps to set Pair Gain System Records see Figure 3 3 1 Enter 9 to Read or Change Pair Gain System parameters At this time the DATU RT announces the available options
21. 2 Enter 1 to set Pair Gain System Record 3 16 Programming System Functions DATU RT DATU RT Dial the DATU RT Access Number Enter the System Password Dial 9 to Read or C hange Pair Gain System Parameters Dial 1 to Set Pair Gain System Recon Enter the Pair Gain System ID got Tote et ene soe ceenene sae manean cea sae emanean soe sm Dial Star to Erd i te 16 Alphanumere characters i idenbhang the Pur Gain Sistem j lfa pond ey Enter Start of Pair Court botre pia i Dial Starto End i Fal of thecounts h thi Par Gan System iD j are served on the same test palh pame MAU 1 t ther enterjust astarand counts D throug 9 995 H comina npt ap pound wil automatealy be included i poet Si is ene r start of pair count at which tine DAT U will prompt tor A therect PGS ID 7 Enter End of Pair Count Dial Star to End Enter AT Access Phone Number Dial Star to End Enter D ther star te endif no MAU is going te be installed Dial Star if Bypass Pair Dial Zem if No Bypass Pair DATU Will Read Back the Infomation for This Pair Count Record and Say Dial Pound if OK the niomabon amp cerect entera pound any porter of the Ricotta amp incertect enter any key but a pound asta vas not entered forthe start of par count then DATU pall promot forte start cf par count Ths Js the start of thecount on the nextJocaben of MAU in j this Pair Gain System iD y ho DATU Will Re
22. 32 Selecting Line Preparation Functions DATU RT DATU RT High Level Tone Keypad Digit 4 This function places a 577 Hz high level 22 dBm interrupted tone bursts on the Tip lead Ring lead or both If a single lead is selected the opposite lead is grounded This function is typically used for the purpose of conductor or pair identification 1 2 Momentarily press 4 on the telephone keypad The DATU RT issues the following submenu prompt a DIAL 4 FOR TIP RING HIGH LEVEL TONE b DIAL 7 FOR RING HIGH LEVEL TONE c DIAL 8 FOR TIP HIGH LEVEL TONE Momentarily press the key corresponding to the desired subfunction The DATU RT identifies the selected subfunction with one of the following voice messages TIP RING HIGH LEVEL if submenu item 4 selected TONE RING HIGH LEVEL TONE if submenu item 7 selected TIP HIGH LEVEL if submenu item 8 selected When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Open Subscriber Line Keypad Digit 6 The Open Subscriber Line function removes Battery and Ground potentials from the subscriber s Tip and Ring leads 1 2 Momentarily press 6 on the telephone keypad The DATU RT responds with the voice message OPEN LINE When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Selecting Line Preparation Functions 4 33
23. 4 24 4 25 4 26 4 26 4 26 4 27 4 27 4 28 4 28 4 29 4 29 4 30 DATU RT CO Alphanumeric Pair Gain System ID Entry 4 30 a Menu Item Selection 4 31 a Announce Main Menu Keypad Digit 1 4 32 a Short to Ground Keypad Digit 3 4 32 a High Level Tone Keypad Digit 4 4 33 Open Subscriber Line Keypad Digit 6 4 33 Short Subscriber Line Keypad Digit 7 4 34 Setting the Hold Time 4 34 DATU RT Selecting Line Preparation Functions 4 3 4 4 Description The DATU RT provides technicians in both CO and field environments with the ability to electrically condition any subscriber line served from the CO The DATU RT is able to access and condition lines contained within the metallic loop plant as well as those served by loop carrier systems Lines served by Loop Carrier Systems may be conditioned at the Remote Terminal RT or at the CO via the DC Bypass pair Those contained within the metallic loop plant are conditioned at the CO The DATU RT is accessed and controlled through a dedicated POTS line interface using a standard butt set or other telephone instrument with DTMF signaling capability The DATU RT responds to standard DTMF tones provided by the technician using the telephone keypad and provides voice messages which guide the technician through the DATU RT functions This Section describes DATU RT line conditioning features and their applications in troubleshooting suspected line faults Subsections within t
24. A IIS working together in the same switch may serve a maximum of 212 separate MAU locations The RT System provides the technicians the ability to perform a series of line preparation functions to subscriber lines These functions are established and maintained by authorized personnel DATU RT Overview 1 3 1 4 User Options Overview Using the RT System the technician working from a location in the field can set up the following conditions on the line Audio Monitor Audio Monitor allows the technician to monitor traffic on a busy line During Audio Monitor traffic on a busy line is scrambled so that it is audible but unintelligible Not available on a Pair Gain line Open Line The subscriber line is opened by removing battery and ground Not available on a busy line Short Line A metallic short is placed across the tip and ring of the subscriber line Not available on a busy line Short to Ground This feature establishes a metallic connection between tip ring and ground Not available on a busy line Tip to Ground This feature establishes a metallic connection between tip and ground with the ring open Not available on a busy line Ring to Ground This feature establishes a metallic connection between ring and ground with the tip open Not available on a busy line High Level Test Tone This is a high level 577 Hz metallic tracing tone and is interrupted four times per second for identifi
25. AIR GAIN LINE if the line is idle and is a Pair PROCESSING Gain line BUSY LINE if the line is busy If the selected line is busy the DATU RT cannot determine whether the line is served by a carrier system It is therefore not possible for the DATU RT to activate the PGTC and metallically connect the DC bypass pair at the RT to the subscriber line Without this metallic connection the DATU RT cannot condition the line In this case only the audio monitor and low level tone functions are available to the user Because it s signal is longitudinal the low level tone function is generally not effective when used on a busy Carrier System line 2 If the line is idle the DATU RT attempts to activate the PGTC The PGTC in turn tests the carrier channel and communicates the results to the DATU RT These operations require additional time and may result in a delay of up to 30 seconds After successfully completing these steps the RT System identifies the carrier channel as follows DATU RT Selecting Line Preparation Functions 4 19 E e eee Single Party Line if a single party channel unit is detected Multi Party Line if a multi party channel unit is detected Coin Line if a coin channel unit is detected If the DATU RT is unable to activate the PGTC or the PGTC encounters a problem in testing the carrier channel the DATU RT issues one of the following voice messages BYPASS PAIR BUSY the DC bypass pair is in use all or
26. ATU RT in the RT in the Transmission TU slot assigned MFT slot and the DATU RT will power up automatically Indication LEDs The five LEDs on the front panel of the DATU RT see Table 2 2 provide the visual status of the DATU RT The Power LED should illuminate and the Status LED should continuously flash on and off at 60 interruptions per minute Table 2 2 LED Functions LED Function Label Color Power Yellow On Power Available Off No Power Alarm Red Off No Alarm Condition On One of Two Conditions Exist 1 There have been 16 unsuccessful attempt to dial either the User or System Password or 2 NTT is not releasing see Note Status Green Flashing DATU RT is functioning normally On With Alarm LED On a microprocessor failure Off With Alarm LED On a microprocessor failure Hi Sleeve Yellow On High Sleeve Current to NTT Off No or Low Sleeve Current to NTT Lo Sleeve Green On Low Sleeve Current to NTT Off No or High Sleeve Current to NTT Note There have been at least three unsuccessful attempts by the DATU RT to release the NTT When the DATU RT is accessed a TRUNK DISCONNECT ERROR message will be provided DATU RT will continue to attempt to release the NTT with a low and high sleeve current sequence When the NTT is released the DATU RT alarm will automatically clear 2 8 Installation DATU RT Access Line Access to the D
27. ATU RT is from a dedicated ground start telephone line and its Line Equipment Number LEN is wired to the MFT terminal on the horizontal side of the Intermediate Distribution Frame IDF Translated for terminate only calling party control and short time out i e ground start configuration Modem Line The DATU RT requires a dedicated origination telephone line to access the modem of the distant MAU The LEN of this DATU RT modem line is wired to the MFT terminal on the horizontal side of the IDF No Test Trunk The DATU RT requires the same configuration of No Test Trunk NTT as used by MLT Trunk translations for DATU RT must be the same as the trunks used for MLT except for the assignment of a different trunk group number The NTT is wired to the MLT terminal on the horizontal side of the IDF DATU RT Installation 2 9 This page intentionally left blank 2 10 Installation DATU RT Programming System Functions Contents DATU RT Programming Procedures Setting System Password Setting User Password Selecting Busy Test Selecting Dialing Method Selecting Trunk Sleeve Sensing Selecting Busy Test Timer Issue 4 and Later Reading or Changing Prefixes Reading or Clearing Timers Setting Number of Digits to Select Subscriber Lines Setting Access Time Out Parameters Reading or Clearing Counters Enabling or Disabling Permanent Signal Release Split Pair Gain Systems Overview Testing with Split Pair Gain Sy
28. All Prefixes 5 Delete One Prefix 6 Read All Prefixes 4 Read or Clear Timers 1 Read Timers 1 Usage Timers 2 Function Timers 2 Clear Timers 1 Usage Timers 2 Function Timers 3 Clear All Timers 5 Set Number of Digits 4 5 7 or 0 for to Select Subscriber s 10 for number Line of digits 6 To Set Access Time 0Oor1 0 reset timer 1 Out Parameters 01 to 99 won t reset timer 2 digit code for number of minutes 1 Read Counters 1 Usage Counters 7 To Read or Clear 2 Function Counters Counters 2 Clear Counters 1 Usage Counters 2 Function Counters 3 Clear All Counters Notes 1 Select Special Trunk Sleeve Sensing for Stromberg DCO Switches 2 Issue 4 or later feature 3 4 Programming System Functions DATU RT Table 3 2 System Menu Parameters Continued Main Menu First Sub Menu Second Sub Menu Third Sub Menu ee Description oe Description ae Description ae Description 8 To Enable or Disable Permanent Signal For Step By Step or Crossbar Switches Only Release 9 Read or Change Pair 1 See Setting Pair Gain S With By Pass Pair Gain System System Record s Parameters 2 See Reading One Pair 0 No By Pass Pair Gain System Record 3 See Reading All Pair Gain System Records 4 See Deleting One Pair Gain System Record 5 See Deleting All Pair Gain System Records 6 See Adding Pair Count Record s 7 See Deleting One Pair Count Record 8 Se
29. DATU RT Selecting Line Preparation Functions 4 13 DATU RT Access To access the DATU RT Ts 2 Dial the telephone number assigned to the DATU RT Wait for an uninterrupted 440 Hz DATU RT dial tone indicating DATU RT has answered and is ready for password entry Enter your password using the telephone keypad The DATU RT dial tone is removed upon entry of the first password digit The first digit of your password must be entered within 7 seconds after DATU RT dial tone is heard If more than 7 seconds elapses before entry of the first digit or between subsequent digits the DATU RT disconnects and releases the line DATU RT dial tone is restored upon successful entry of a valid password DATU RT disconnects and releases the line 7 seconds after the last key depression if an invalid or incomplete password is entered The voice message ERROR BAD NO TEST TRUNK indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will not be available until the NTT problem is corrected Subscriber Line Access Note The DATU RT dial tone is removed upon entry of the first digit To access the subscriber s line 1 Dial followed by the subscriber s telephone number If the first digit is not entered within 7 seconds of DATU RT dial tone the voice prompt DIAL SUBSCRIBER LINE NUMBER is issued If no digits have been entered after 60 seconds of DATU RT dial tone the DATU RT disc
30. DIAL POUND IF OK Table 3 4 Timeout Parameters vase Digit 2 Digit 3 Digit 1 Tens of Minutes Whole Minutes 0 Timer will reset 0 9 0 9 1 Timer will not reset 3 Enter and select a new item from the Main Menu Example 1 Enter the three digits 110 This permits the technician to access the subscriber s line for a maximum of ten minutes to perform all tests on the line before the access timer will timeout disconnecting the DATU RT The technician cannot extend this time period The technician when in the Hold After Disconnect function may direct the DATU RT to continue to hold the line for a maximum of ten minutes after going on hook Programming System Functions 3 11 Example 2 Enter the three digits 004 This permits the technician to access the subscriber s line for a maximum of four minutes to perform individual tests on the line before the access timer will timeout disconnecting the DATU RT Every time the technician selects the same or another test function the access timer resets itself and another four minute disconnect sequence begins The technician when in the Hold After Disconnect function may direct the DATU RT to continue to hold the line for a maximum of four minutes after going on hook Reading or Clearing Counters Note When reading the counters the DATU RT will announce the function and then the number of accesses Example ACCESS COUNTER ZERO FOUR FIVE SIX Maximum co
31. Gain ovyo any other Key wil cance the deletion Figure 3 6 Deleting a Pair Gain System Record Deleting All Pair After accessing the DATU with the System password perform the following 8 Gain System steps to delete all Pair Gain System Record s see Figure 3 7 Record s 1 Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options DATU RT Programming System Functions 3 21 Dial te DATU RT Access Number Dial 9 Read or Change Pair Gain System Parameters Dial 5 Delete All Pair Gain System Records DATU RT Will Prompt Delete All Pair Gain System Records Dial Poundif OK Entera Found if You Wish Delete ALL Pair Gain Records ane Any other ley val cancel the deletion Figure 3 7 Deleting All Pair Gain System Records CAUTION Completing this procedure will delete ALL Pair Gain System Records previously programmed into the DATU RT 2 Enter 5 to delete all Pair Gain System Records 3 Confirmation DATU RT will read back the selection and prompt for a pound if OK Adding Pair Count After accessing the DATU with the System password perform the following Record s To steps to add new Pair Count Record s to an existing Pair Gain System ID see Figure 3 8 Previously Entered Pair in m 1 Enter 9 to read or change Pair Gain System parameters The air Ga Syste s DATU RT announces the ava
32. HARRIS Communications Products Division Direct Access Test Unit Remote Terminal DA TU RT Model 24820 003 next level solutions No part of this publication may be reproduced stored on a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Harris Corporation The use of trade marks or other designations is for reference purposes only NOTICE Harris Corporation makes no warranties about this document Harris Corporation reserves the right to make hardware and software changes to the product described within this document without prior notice and without obligation to notify any person of such revision or change TRADEMARKS AXE 10 is a trademark of Ericsson North America Incorporated DCO is a trademark of Stromberg Carlson Corporation DMS 1 DMS 10 and DMS 100 are trademarks of Nortel Networks Incorporated EWSD is a trademark of Siemens Incorporated GTD 5 is a trademark of AG Communications Systems MFT is a trademark of Western Electric Company NEAX 61 is a trademark of NEC America Incorporated 1A ESS 2B ESS 3B ESS 5 ESS 1 Crossbar 5 Crossbar PGTC SLC 96 and SLC Series 5 are trademarks of Lucent Technologies Communications Products Division 809 Calle Plano Camarillo CA 93012 8519 USA HARRIS www harris com 1 800 437 2266 1996 Harris Corporation next level solutions Written Printed in USA
33. Oll 724820 003 Issue 8 November 1999 ee Contents eT 1 Overview 1 1 a Description 1 2 a User Options 1 4 a System Features 1 5 C 2 Installation 2 1 a Considerations for Installation 2 2 a Installation Procedures 2 6 Eee 3 Programming System Functions 3 1 a Programming Procedures 3 5 a Split Pair Gain Systems Overview 3 13 a Time Outs and Disconnects 3 27 eee 4 Selecting Line Preparation Functions 4 1 a Description 4 4 a Normal Separate Line Access Local Metallic Loops 4 4 a Menu Item Selection 4 7 a Single Line Access Local Metallic Loops 4 13 a Normal Separate Line Access Carrier System Lines 4 18 a Single Line Access Carrier System Lines 4 28 a Setting the Hold Time 4 34 5 Troubleshooting Guide 5 1 a Initial LED and Voltage Checks Step 1 5 2 a Calling the DATU Checks Step 2 5 2 a Calling the Subscriber Line Checks Check 3 5 3 a Cut Through Checks Step 4 5 4 a Disconnect Checks Step 5 5 4 a Fault Location Flow Chart Step 6 5 5 A 6 Specifications 6 1 a Physical Dimensions 6 2 a Electrical 6 2 a Access Line Interface Ground Start 6 2 a No Test Trunk Interface 6 3 a Test Function Parameters 6 4 Overview Contents DATU RT Description Direct Access Test Unit Remote Terminal a Pair Gain Applique IIS a Metallic Access Unit User Options System Features 1 2 1 3 1 3 1 3 1 4 1 5 Overview 1 1 1 2 Description The Direct Acces
34. Records for he Next PGS ID oar Any other key val stor the read out ard return te the Neu Menu Figure 3 5 Reading All Pair Gain System Records 3 20 Programming System Functions DATU RT Deleting One Pair After accessing the DATU with the System password perform the following Gain System Record steps to delete one Pair Gain System Record see Figure 3 6 1 Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options 2 Enter 4 to delete one Pair Gain System Record Note By entering a pound at 3 Pair Gain System ID DATU RT will prompt for the Pair System ID to this point the Pair Gain System be deleted Record just recited will be deleted Any other key will cancel 4 Confirmation DATU RT will recite the Pair Gain System Record as it the deletion and return the was programmed then prompt you to dial pound to delete one Pair programmer to the Main Menu Gain System Record Enter star gt to end this portion of the entry Dial te DATU RT Access Number Dial 9 Read or Change Pair Gain System Parameters Dial 4 to Delete Ore Pair Gain System Record Enter the Pair Gain PAAA System ID Dial Star End Ts is a PGS iD that Ras aready been entered ard you vart te dekte tre entre record DATU RT Will Racite he Endre Record Inducing Pair Court Recordis Entera Pound ifYou Wish Delete This Pair
35. SS with Integrated SLC Only DMS 10 and DMS 100 2 6 Installation DATU RT DAT LAT ACCESS LINE MFT MFT MDF AY wena DB awn an Bi A SIDE B ar simal PS4 Notes SANAD ONS 1 MFT may be either two wire vith POTS LINE BS1 and BS2 leads or four vire bay 2 Jese Retum option Option G of NTT must be installed or EXTERNAL selected on SN 107 card 3 R1 lead of NTT must be connected to BS2 lead of PGA Figure 2 4 System Connections for 5 ESS with Integrated SLCs Only MFT MFT MDF MDF MDF Aj eeren SID EeerndB A ere S 1D Erme mi DATU RT FE PGA II RI 2230 001 E51 TIA 2410 001 JES Ts TU a5 7 aocess Line MODEM Aooess 0 Metalic Testacoess TA mustbe provided Communicators BSI anbecmelsor tiene by tranelaton in MTA Horizontal table identically as POTS Line Tanstaton was done br the NTT access to MLT except tata dittrentgroup number must be used DATU RT Figure 2 5 DMS 100 MDF Connections Installation 2 7 Set Option Switches Switch S1 see Figure 2 2 must be set to the STD position When an external ground is supplied for the DATU RT line preparation functions the jumper block on shorting pin J2 see Figure 2 2 must be removed Install in MFT Bay Note When using double slot The card edge of the DATU RT is designed to plug directly into the MFT MFT shelves mount the DATU bays when wired in the standard configuration Plug the D
36. T FRAME LEAD DESIGNATION R_ A SIDE Pe Tay SAE ia Wn dL yd FT m RD MEL rik es K r T HATZTS FMR shee a TT 3 BSe B SIDE ANII Ao MOMTAS1 ASIDE has BAGKPLATE SIDE rT FALT ee is elite OP Mos w Walt bl TERE a aN ed Eti MODEM COMMUMICIT IONS POTS LINE Figure 2 1 DATU RT Card Pin Locations DATU RT Installation 2 3 JUMPERED Figure 2 2 DATU RT J2 and S1 Switch Locations Note Trunk translations are DATU RT System requires the same type of NTT translations as normally available from the used by MLT Table 2 1 shows the typical trunk circuit associated Switch Configuration Center with most switches SCC NEAX 61 Select 5 ESS busy test 2 4 Installation DATU RT 2B ESS Many smaller switches do not have the BS1 and BS2 leads extended to the frame P wire may used to extend these leads to simplify the RT system installation DMS 10 and DMS 100 Should the ground start access line fail to release upon disconnect add incoming service only to the translation table If line release failures continue then add Cut Off on Disconnect COD This drops the linkage when either party disconnects On some DMS s setting the line translations for ground start will not be accepted by the switch In this case remove all translations then rebuild Very old DMS 10s may have line cards that cannot be set for ground start Replace these older line cards with T44 or la
37. Troubleshooting Guide 5 3 ee 3 If ERROR BAD NO TEST TRUNK is heard a Check the Tip and Ring wiring Tip on pin 14 and Ring on pin 13 to the NTT b Check that the correct dialing method for the NTT has been programmed into the DATU RT c Check that the Tip and Ring to the NTT are not shorted together or to any other leads Cut Through Checks Step 4 1 Ifthe DATU RT is returning the message BUSY LINE on a line that is not busy observe the High Sleeve LED on the DATU LC If it is on and the DATU RT is in an office that does not provide a reversal check that correct number of digits to access the NTT has been programmed into the DATU RT Too few digits may have been originally programmed 2 If the Low Sleeve LED is on and the DATU LC is returning the message BUSY LINE on a line that is known to be idle a Check that the correct number of digits to access the NTT has been programmed into the DATU RT Too many digits may have been originally programmed b Check that the subscriber s number is served by that switch 3 If the LOW Sleeve is on and the DATU LC has returned the message OK on a line that is busy a The subscriber s number may be in a Hunt Group and is not testable by the DATU RT b The subscriber s number may have been entered wrong Re enter the number Disconnect Checks Step 5 Trouble with disconnecting 1 Receive a CO busy tone when reaccessing the DATU RT 2 Check that the
38. a hours and minutes Example ACCESS TIMER ZERO FOUR FIVE SIX HOURS FOUR THREE MINUTES Maximum timer readout is 9 999 hours and 59 minutes After each function timer is read a must be entered b to go to the next timer in sequence The may be entered at any time but any other key will stop the readings and return to the Main Menu Cc Enter 1 to read Timers Enter 1 to read Usage Timers Enter 2 to Read All Function Timers DATU RT will read the timers chosen Note Usage Timers are Access Job and Single Line Access Enter 2 to clear Timers Enter 1 to clear Usage Timers Enter 2 to clear Function Timers Enter 3 to clear ALL Timers DATU RT will repeat the timer to clear then prompt DIAL POUND IF OK Enter and select a new item from the Main Menu Table 3 3 is provided for record keeping convenience Table 3 3 Usage and Job Function Counter Timer Log Line Preparation Function Timer Reading Counts Hours Minutes Access Job Single Line Access Audio Monitor Tip and Ring Short to Ground Tip to Ground Ring to Ground Tip and Ring High Level Tone Low Level Tone Tip High Level Tone Ring High Level Tone Short Line Open Line 3 10 Programming System Functions DATU RT Setting Number of Digits to Select Subscriber Lines Note Selecting zero from this submenu will caus
39. ain Menu Selecting Busy Test Timer Issue 4 and Later This optional function is used with the Special Busy Test used with DMS switches which have integrated DLC The busy test timer controls the length of the delay between no test trunk cut through to the line and the DATU RT busy test on the line 1 Enter 2 The DATU RT will respond DIAL ONE TO SELECT BUSY TEST DIAL TWO TO SELECT DIALING METHOD DIAL THREE TO SELECT TRUNK SLEEVE SENSING DIAL FOUR TO SELECT BUSY TEST TIMER 2 Enter 4 The DATU RT will read the current timer value in seconds lt point gt tenths of seconds for example 3 point 5 would mean that the timer is set to 3 5 seconds The default is 0 0 seconds 3 The DATU RT will then prompt DIAL TWO DIGITS Enter the desired length of time in seconds followed by tenths of seconds For example enter 9 2 for 9 2 seconds 4 The DATU RT will read back the time entered then prompt DIAL POUND IF OK 5 Enter and select a new item from the Main Menu 3 8 Programming System Functions DATU RT DATU RT Reading or Changing Prefixes Note If the switch requires five This function is for entering reading and maintaining the office prefixes for digit access to the NTT program the subscriber line numbers that the DATU RT will be accessing the number of digits to access the subscriber s line as described in 1 Enter 3 DATU RT will announce the available Prefix options the To Set Number of Digits Req
40. ain System information stored in the Pair Gain System Record Table to establish a test path then conditions the line Programming Procedures and Tips 1 Before programming the Pair Gain System records it is advisable to have all the information on the remote site s Pair Gain configuration handy An example of how this information could be organized is provided below using the information in Figure 3 1 and Figure 3 2 An example of a table for recording Pair Gain System information prior to programming the DATU is provided Sorting by Pair Gain System ID simplifies data entry 2 During programming DATU RT waits approximately 7 seconds for a keypad entry After seven seconds have elapsed without a keypad entry DATU RT repeats the prompt If a mistake is made and it is caught before the confirmation or ending key is entered stop and wait for seven seconds The DATU RT will disregard the entries prior to the stop and reprompt for the complete entry 3 If an improper entry is entered during the programming of the unit the DATU RT responds with an error message then returns to the main menu 4 Avoid making entries during speech 5 Once a complete Pair Count Record is entered the DATU RT repeats the entire record for confirmation Enter a pound to save the data in DATU RT s memory any other entry cancels the request 6 The alpha mode is toggled on and off by dialing Once in alpha mode each letter is entered by dialing
41. ard alphabetical arrangement of the telephone keypad Line preparation functions are selectable as soon as the DATU RT has determined the state of the subscriber line If the line is idle all functions are available If the line is busy the set of available functions is limited to audio monitor and low level tone see Subscriber Line Status Functions may be activated in any sequence however only one function may be active at a time Selection of any menu item cancels the previously active function If an incorrect or invalid entry is made the current function if any remains in effect An Access Timeout feature limits the time during which line preparation functions are sustained or allowed to remain active The access timeout interval is preset at the factory to allow the selected function to remain active for up to 10 minutes The factory setting also allows extension of this interval by simply selecting the same function again or if desired selecting a new function The parameters associated with the Access Timeout feature are programmable and accessible only by the DATU RT Administrator Announce Main Menu Keypad Digit 1 Selection of this function causes the DATU RPT to announce it s Main Menu If selected while in a submenu DATU RT announces ERROR followed by the Main Menu 1 Momentarily press 1 on the telephone keypad 2 The DATU RT announces it s Main Menu Selecting Line Preparation Functions 4 23 Audio Mon
42. ble options 2 Enter 7 to delete one Pair Count Record 3 Pair Gain System ID DATU RT prompts for the Pair Gain System ID PGS ID This entry is the identifier of a Pair Gain System ID previously programmed into the DATU RT that you wish to delete a Pair Count Record from Dial star to end this portion of the entry 4 Pair Count DATU RT will prompt you to enter pair number Dial star to end This is any pair number falling in the pair count record to be deleted 5 Confirmation DATU RPT recites the Pair Count Record that contains the pair number entered in the previous step including RT access phone number and the presence or absence of the bypass pair At the end of the Pair Count Record DATU RT will prompt DIAL POUND TO DELETE PAIR COUNT RECORD Dial pound to delete record any other key to cancel deletion Setting the RT After accessing the DATU with the System password perform the following System Baud Rate steps to set RT System Baud Rate see Figure 3 10 1 Enter 9 to read or change Pair Gain System parameters The DATU RT announces the available options 2 Enter 8 to set RT System Baud Rate Note In situations where the 3 Baud Rate This is the speed of communications the DATU RT factory default of 1200 Baud is modem uses to communicate with all the MAU modems of this CO not reliable e g Step By Step COs it is advisable to set the 4 Entry DATU RT prompts PLEASE ENTER BAUD RATE Enter 30
43. bscriber Line Keypad Digit 7 Permanent Signal Release Keypad Digit 9 New Subscriber Line Keypad Digit Hold Test Keypad Digit n Selecting Line Preparation Functions 4 4 4 4 4 5 4 5 4 6 4 7 4 8 4 8 4 9 4 10 4 11 4 11 4 11 4 12 4 12 4 13 4 1 Single Line Access Local Metallic Loops DATU RT Access a Subscriber Line Access Menu Item Selection a Announce Main Menu Keypad Digit 1 a Short to Ground Keypad Digit 3 a High Level Tone Keypad Digit 4 Open Subscriber Line Keypad Digit 6 a Short Subscriber Line Keypad Digit 7 Normal Separate Line Access Carrier System Lines DATU RT Access Subscriber Line Access a Subscriber Line Status Remote Terminal RT Access a Alphanumeric Pair Gain System ID Entry a Menu Item Selection Announce Main Menu Keypad Digit 1 Audio Monitor Keypad Digit 2 a Short to Ground Keypad Digit 3 a High Level Tone Keypad Digit 4 Low Level Tone Keypad Digit 5 Open Subscriber Line Keypad Digit 6 Short Subscriber Line Keypad Digit 7 Permanent Signal Release Keypad Digit 9 New Subscriber Line Keypad Digit Hold Test Keypad Digit n Single Line Access Carrier System Lines m DATU RT Access m Subscriber Line Access Remote Terminal RT Access 4 2 Selecting Line Preparation Functions 4 13 4 14 4 14 4 15 4 16 4 16 4 17 4 17 4 18 4 18 4 18 4 19 4 19 4 20 4 21 4 22 4 23 4 24
44. cation purposes Not available on a busy line High Level Tone on Tip This is a high level test tone that is placed only on the tip side of the line with the ring side grounded Not available ona busy line High Level Tone on Ring This is a high level test tone that is placed only on the ring side of the line with the tip side grounded Not available on a busy line Low Level Test Tone This is a low level 577 Hz longitudinal tracing tone that is used for busy line identification It will not disturb traffic on a busy circuit This tone is interrupted four times per second for identification purposes and may be applied even if the line under test is busy A standard technician s hand held test set can be used to monitor this tone by connecting from tip to ground or ring to ground Not available on a Pair Gain line Hold The Hold feature is used to continue a line preparation function after disconnecting from the RT System s access line for a technician s specified time within the system s parameters System parameters are set in the System Mode by authorized personnel see System Features in this section If a hold time is not entered the RT System will automatically hold the function for one half the maximum time limit set in the System Mode New Subscriber Line This feature allows the technician to release one subscriber line and access another without disconnecting and re accessing the RT System DATU RT Sy
45. d 2 The DATU RT responds with the voice message PERMANENT SIGNAL RELEASE 3 After executing the required sequence of operations the DATU RT tests the subscriber line to determine whether the busy condition has been cleared The result of this test is then announced as follows OK if the line is idle BUSY LINE if the line is busy New Subscriber Line Keypad Digit This function releases the currently held subscriber line so that another subscriber line may be accessed 1 Momentarily press the key on the telephone keypad 2 The DATU RT responds with DATU RT dial tone 3 Enter the new subscriber line number as done previously in the Subscriber Line Access section The voice message TRUNK DISCONNECT ERROR indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will not be available until the NTT problem is corrected 4 12 Selecting Line Preparation Functions DATU RT Hold Test Keypad Digit n The Hold Test feature provides a means by which a line condition asserted by the DATU RT is maintained for a specified time interval after disconnecting from the DATU RT The duration of the hold test interval is entered through the telephone keypad and is specified in minutes Any interval may be entered however the DATU RT will not maintain a line condition longer than the access timeout interval The programmed function is automatically cancelled by the DATU RT whe
46. e Noto JW cored number of digits induding Pi completed and verified q bad and promod i S T asoring dg f appiabk to be com oct H i wry Notes S Program the DATLL RT diding method for RIF with reversal anang on flo to Service Warum Frocesd fr j Not 6 The NTT must receive awid dgk stream Induding KP and ST Page Refer to Service Manual Procosd from Qi Figure 5 1 Fault Location Flow Chart Sheet 4 of 6 5 8 Troubleshooting Guide DATU RT Check make sure the correctbusy DATU RT monitors the line tor 15 seconds No a and announces the waikble optore h test has been progamm ed into te DATU RT Rete Progamming System tunctore k n himan Diad toe anew subsciberline Ofer receiving 440 Hr Yes Yes dal tone dial aline known to be ide thattermina sin No j F Son he CC vhere he DATURT isirstled cece The H Slewe LED pity TheLoSkeeveLED Note a of is On 3 1a Yes F Ne Ves No Yes erika No DATURT prompts Ye te number daed helnovn ide line that Badanced em Wout te prompt Busy Line terminatedin he CO exston theline Conmected d 3 No amon OK DATU RT prom pts Erce Bad No Test Trunk andreums 440 Hr tone Yes DATURT didnotsee te correctsignaling fom te NTT Reaccess te line under test orselectanoter line Go 12 a Dial 4 send Hgh level tone on te Line Notes 7 connected an NTT thathas no reversal te DOTU RT is set Or dangan ireuticentnum ber
47. e Preparation Functions 4 7 Table 4 1 DATU RT Separate Line Access Main Menu Main Item Function Main Menu Key SubMenu Key Announce Main Menu 1 Audio Monitor 2 ABC Short to Ground Earth 3 DEF 3 Tip and Ring to Ground Ring Ground 7 PRS Tip Ground 8 TUV High Level Tone 4 GHI 4 Tip and Ring Tone Ring Tone with Tip Grounded 7 PRS Tip Tone with Ring Grounded 8 TUV Low Level Tone 5 JKL Open Subscriber Line 6 MNO Short Subscriber Line 7 PRS Permanent Signal Release 9 New Subscriber Line Hold Test n Forced Disconnect HH Notes 1 n represents time in minutes Refer to description of Hold function 2 Highlighted letters represent Key codes to functions Announce Main Menu Keypad Digit 1 Selection of this function causes the DATU RT to announce it s Main Menu If selected while in a submenu DATU RT announces ERROR followed by the Main Menu 1 Momentarily press 1 on the telephone keypad 2 The DATU RT announces it s Main Menu Audio Monitor Keypad Digit 2 The Audio Monitor function provides a means by which the idle or busy line status reported by the DATU RT may be verified To protect the privacy of the subscriber conversation is audible but unintelligible 1 Momentarily press 2 on the telephone keypad 2 The DATU RT announces AUDIO MONITOR 4 8 Selecting Line Preparation Functions DATU RT
48. e Setting the RT System Baud Rate 0 To Clear Alarm Notes 3 Enter 1200 for 1200 baud or enter 300 for 300 baud 4 When programming the DATU RT the term WINK refers to 1 the reversal of trunk polarity which occurs when a termination is placed across T R followed by 2 the re reversal of trunk polarity after all the digits have been dialed Reversal Sensing refers to just the initial reversal no re reversal will be expected if the DATU RT is set for Reversal Sensing Programming Procedures Note After 7 seconds if no dial codes have been entered the DATU RT will start prompting with the System Menu options every 7 seconds for 10 minutes DATU RT To access the DATU RT System Menu follow the steps below 1 Dial the DATU RT access number The DATU RT will trip the ring and return a 440 Hz acknowledgment tone Enter and the System password The factory provided System password is 2222222 seven 2s The DATU RT will prompt OK followed by the Main Menu access tone Programming System Functions 3 5 Setting System Password To set the System password Ls Note The confirming must be 5 entered before the entry becomes active Any other entries will cancel the change Enter 1 and DATU RT will respond DIAL ONE TO SET SYSTEM PASSWORD DIAL TWO TO SET USER PASSWORD Enter 1 again and DATU RT will respond DIAL SEVEN DIGITS Enter the new System password and DATU RT will respond REPEAT
49. e host element of the DATU RT at the CO and the RT Alphanumeric Pair Gain System ID Entry This section describes the method by which alphabetical letters may be entered using a standard 12 key DTMF keypad He Enter any leading numbers that are part of the Pair Gain System ID in the normal manner Enter This special key sequence places the DATU RT in a special mode in which alpha and certain other non numeric characters may be entered as a series of two digit key codes The first key depression simply identifies the key on which the desired character is stamped or printed Press the key on which the character appears For example if character is A B or C press the 2 key The second key depression identifies a single character from the group typically three letters selected with the first keystroke The character is identified by it s position on the key To select the first press 1 If the desired letter is the second of the three press 2 Press 3 if the desired letter is the third of the group Repeat Steps 3 and 4 for each alpha character in the Pair Gain System ID When the last character has been entered enter just as previously done in Step 2 This restores the numeric entry mode Special two key sequences are assigned to the letters Q Z and certain punctuation characters Table 4 3 identifies these special key combinations 4 30 Selecting Line Preparation Functions DATU RT ee 6 Enter any trailin
50. e the DATU to use 10 digit dialing through the NTT To set the number of digits to select subscriber lines 1 Enter 5 and DATU RT will respond DIAL FOUR FIVE SEVEN or Zero 2 Enter either 4 5 7 or zero for 10 depending on the number of digits required to access a subscriber line through the NTT DATU RT will repeat the digit chosen then prompt DIAL POUND IF OK 3 Enter and select a new item from the Main Menu Setting Access Time Out Parameters Note The first digit is used to allow or prohibit the resetting of the access timer Pressing a 0 will allow the timer to be reset This means that every time the technician presses a key to call a function the access timer will be reset to the number of minutes allowed Pressing a 1 will prohibit the resetting of the timer in user mode The last two digits are the maximum number of minutes from O1 to 99 minutes that the access timer will run See Example 1 and 2 This feature is used to set the maximum period of time a technician may condition a subscriber s line The factory default timer is 10 minutes with resetting of the timer permitted The timer is started over or reset each time a key is pressed if the timer reset is allowed If a 10 minute resettable timer is acceptable skip the rest of this section 1 Enter 6 DATU RT will respond DIAL THREE DIGITS 2 Enter three digits see Table 3 4 for available choices DATU RT will repeat the entry and prompt
51. ecognize an incoming call while it is making its three attempts to disconnect from the NTT Wait 45 seconds and redial the access number 3 DATU RT trips the Ring and provides a 440 Hz tone Dial the User password 4 Ifa steady 440 Hz tone is heard go to Calling the Subscriber Line Checks Step 3 5 If after dialing in the User password an interrupted 440 Hz tone is heard a Check that the sleeve ground pair is not reversed sleeve BS1 on pin 12 and ground BS2 on 10 b Check for ground on ground lead BS2 pin 10 CAUTION Wait at least seven seconds before unplugging the DATU RT if it has just been plugged in 6 Check for a locked up NTT To release the NTT unplug the DATU RT wait seven seconds and plug the DATU RT back in On ESS switches if the NTT has been held up for a long time it may be necessary to remove the busy status from the memory of the switch 7 DATU RPT trips the Ring provides a 440 Hz tone and User password is dialed 8 Ifa steady 440 Hz tone is heard go to Calling the Subscriber Line Checks Step 3 9 Ifa busy tone is heard check the H relay adjustment of the NTT if the switch is a 1 ESS or the SL relay for step by step offices Consult the appropriate NTT relay adjustment procedures Calling the Subscriber Line Checks Check 3 To check the subscriber line 1 Dial the subscriber line 2 If OK or BUSY LINE is heard go to Cut Through Checks Step 4 DATU RT
52. elapse between digits the DATU RT will provide voice announcements prompting for the subscriber number After accessing a subscriber line DATU RT will announce AUDIO MONITOR and apply that function for 15 seconds After this time period DATU RT will announce the line condition functions that are available to the technician Unless the Hold Test feature has been activated the subscriber line under test will be released when the technician goes on hook A double pound dialed at any time will cause the DATU RPT to disconnect The pound key must be pressed twice within one second to distinguish this function from the new subscriber line function which is a single System Mode A 440 Hz tone is provided in the Main System Menu while the DATU RT is waiting for programming commands After 7 seconds of tone the DATU RT recites all the Main Menu options After 10 minutes without keypad entry from the caller in System Mode the DATU RT will disconnect 3 28 Programming System Functions DATU RT Selecting Line Preparation Functions Contents DATU RT Description Normal Separate Line Access Local Metallic Loops DATU RT Access Subscriber Line Access Subscriber Line Status Menu Item Selection Announce Main Menu Keypad Digit 1 Audio Monitor Keypad Digit 2 Short to Ground Keypad Digit 3 High Level Tone Keypad Digit 4 Low Level Tone Keypad Digit 5 Open Subscriber Line Keypad Digit 6 Short Su
53. eleased Short Subscriber Line Keypad Digit 7 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE The Short Subscriber Line function provides an electrical short across the subscriber s Tip and Ring leads 1 Momentarily press 7 on the telephone keypad 2 The DATU RT responds with the voice message SHORT LINE Selecting Line Preparation Functions 4 11 The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released Permanent Signal Release Keypad Digit 9 This function is not available unless specifically enabled by the DATU RT administrator Unless enabled any attempt to use this function results in the error message ERROR PERMANENT SIGNAL RELEASE DISABLED Permanent Signal Release will function only on a line that the DATU RT has identified as busy An attempt to use this function on an idle line results in the error message ERROR IDLE LINE The Permanent Signal Release function causes the removal of Battery and Ground potentials from a permanent signal line served by a step by step switch This function is typically used to clear a busy condition resulting from a line fault so that normal line tests may be performed 1 Momentarily press 9 on the telephone keypa
54. ent digits the DATU RT disconnects and releases the line DATU RT dial tone is restored upon successful entry of a valid password DATU RT disconnects and releases the line 7 seconds after the last key depression if an invalid or incomplete password is entered The voice message ERROR BAD NO TEST TRUNK indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will not be available until the NTT problem is corrected 4 18 Selecting Line Preparation Functions DATU RT Subscriber Line Access To access the subscriber s line Note The DATU RT dial tone is 1 Dial the subscriber s telephone number removed upon entry of the first digit 2 If the first digit of the subscriber s telephone number is not entered within 7 seconds of DATU RT dial tone the voice prompt DIAL SUBSCRIBER LINE NUMBER is issued If no digits have been entered after 60 seconds of DATU RT dial tone the DATU RT disconnects and releases the line Unless the DATU RT is set to 10 digit dialing mode entry of a telephone number not served by the CO causes the DATU RT to issue the voice message INVALID PREFIX DIAL SUBSCRIBER LINE NUMBER 3 The DATU RT announces ACCESSING and repeats the subscriber telephone number entered in Step 1 Subscriber Line Status To obtain the status of a subscriber s line 1 The DATU RT announces the state of the subscriber line NTT with one of the following voice messages P
55. eparation function anytime after the voice message begins the line is automatically monitored for 10 seconds Selecting Line Preparation Functions 4 5 OE Note When set to 10 digit dialing 4 If the voice message CONNECTED TO ddd dddd BUSY LINE mode the prompt will be ddd AUDIO MONITOR is heard the line is busy A busy line will be ddd dddd monitored for 10 seconds Traffic on a busy line will be audible but unintelligible At the end of the automatic 10 second monitor period DATU RT will send two 614 Hz tones in rapid succession to indicate the end of the monitor period On a busy line the DATU RT will announce the line preparation functions available immediately following the audio monitor period You may select an available option or dial to return to step 2 and select a different subscriber line 5 Aline preparation function may be selected at any time during the 10 second audio monitor period or after the voice message begins Subscriber Line Status To obtain the status of a subscriber s line 1 The DATU RT announces the state of the subscriber line NTT with one of the following voice messages OK if the line is idle BUSY LINE if the line is busy 2 Verify the line state reported by the DATU RT by monitoring the line for audio activity The DATU RT automatically provides a 15 second Audio Monitor interval after the line state has been determined To protect the privacy of the subscriber conversat
56. function is selected To select another Short to Ground subfunction both Main and submenu selections must be made DATU RT Selecting Line Preparation Functions 4 9 High Level Tone Keypad Digit 4 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE This function places a 577 Hz high level 22 dBm interrupted tone bursts on the Tip lead Ring lead or both If a single lead is selected the opposite lead is grounded This function is typically used for the purpose of conductor or pair identification 1 Momentarily press 4 on the telephone keypad 2 The DATU RT issues the following submenu prompt a DIAL 4 FOR TIP RING HIGH LEVEL TONE b DIAL 7 FOR RING HIGH LEVEL TONE c DIAL 8 FOR TIP HIGH LEVEL TONE 3 Momentarily press the key corresponding to the desired subfunction 4 The DATU RT identifies the selected subfunction with one of the following voice messages TIP RING HIGH LEVEL if submenu item 4 selected TONE RING HIGH LEVEL if submenu item 7 selected TONE TIP HIGH LEVEL if submenu item 8 selected The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released The DATU RT does not remain in the High Level Tone submenu after the subfunction is selected T
57. g numbers that are part of the Pair Gain System ID 7 Any combination of letters and numbers may be entered in this manner Repeat the appropriate steps as necessary 8 Enter a single star to complete the Pair Gain System ID entry 9 After the Pair Gain System ID has been successfully entered the DATU RT issues the prompt PLEASE ENTER PAIR NUMBER DIAL STAR TO END 10 Enter the pair number for the subscriber s line using the telephone keypad 11 The DATU RT provides verification of the Pair Gain System ID entry with a voice message If a valid ID was entered the DATU RT announces ACCESS followed by the ID previously entered If the Pair Gain System ID is not valid or if the bypass pair was selected the DATU RT announces USE BYPASS PAIR Menu Item Selection DATU RT functions are presented in a menu format through voice messages Main Menu functions are announced as follows a DIAL 33 FOR TIP RING SHORT TO GROUND a DIAL 37 FOR RING GROUND a DIAL 38 FOR TIP GROUND a DIAL 44 FOR TIP RING HIGH LEVEL TONE a DIAL 47 FOR RING HIGH LEVEL TONE a DIAL 48 FOR TIP HIGH LEVEL TONE a DIAL 6 TO OPEN SUBSCRIBER LINE a DIAL 7 TO SHORT SUBSCRIBER LINE a DIAL POUND FOR NEW SUBSCRIBER LINE If two or more options are associated with the selected function a corresponding submenu is announced after the Main Menu item is selected Table 4 2 presents a listing of both Main and submenu functions with their assigned keypad digi
58. g switch compatibility contact the Harris Technical Support Team Table 2 1 List of NTT Circuit Numbers Manufacturer Switch Circuit Number 1A ESS SD 1A186 01 2B ESS SD 2H109 01 3B ESS SD 3H520 01 5 ESS SN107 Lucent Technologies 1 Crossbar SD 25432 01 5 Crossbar SD 26136 01 Step By Step SD 31401 01 SD 31402 01 SD 32007 31 Ericsson AXE HOST AXE RSS ILTSI SLCT ACCSD NEC NEAX 61 DLTT S4900D Nortel Networks DMS 10 With MLT 2716 2T14 DMS 100 With MLT 2X90AC AD Siemens EWSD MTAM Stromberg Carlson DCO 814685 526 814686 526 RLS 4000 822040 526 All Central Offices 1 Make the translations for RT system look exactly like the Mechanized Loop Testing MLT trunk except of course for the trunk group number 2 Optional ground source for line conditioning function a With J2 installed factory provided on the DATU RT the ground supplied to the MFT bay is the ground source for the RT system line conditioning functions Note Refer to Figure 2 2 for the To provide an external ground source for the RT system line location of J2 conditioning functions remove the J2 shorting pin on the DATU RT and connect the appropriate ground to R1 B A side on the MFT bay DATU RT pin 5 refer to Figure 2 1 Forall switches except the GTD 5 verify that S1 on the DATU RT is set to the STD position 2 2 Installation DATU RT DATU RT EDGE CONNECTOR MF
59. h a pound After saving the Pair Count Record and prompting OK the DATU RT begins accepting data for the next pair count record for this Pair Gain System ID by asking for the next start of pair count 3 24 Programming System Functions DATU RT DATU RT 9 Last Entry After the last Pair Count Record has been entered for this Pair Gain System ID enter pound when DATU RT prompts start of pair count DATU RT will return to the Main System Menu and list the options available Deleting One Pair After accessing the DATU with the System password perform the following Count Record steps to delete one Pair Count Record from an existing Pair Gain System Record see Figure 3 9 Dial the DAT LE RT Access hl uniber Enter the System Password Dial 90 Read or Change Pair Gain System Parameters 1 Dal to Delete One E Pair Court Record Emer the Pair Gain System ID Dial Str Erd Tis s a PGS 1 halhas already beer entered and vor ran te delete a Par L Ceunt recet Mem DATU AT Will Recite the l Enti re Record Inducing AT Access Phone Humber and ass Pair Status DATU AT Will Pro mpt Dial Pound to Delete Pair count Record Entera Found ifon Wish Beet This Pair Coumt FRiecond DI hit Any cter key pull carce tre geleber Figure 3 9 Deleting One Pair Count Record Programming System Functions 3 25 e 1 Enter 9 to read or change Pair Gain System Parameters The DATU RT announces the availa
60. has identified as busy An attempt to use this function on an idle line results in the error message ERROR IDLE LINE The Permanent Signal Release function causes the removal of Battery and Ground potentials from a permanent signal line served by a step by step switch This function is typically used to clear a busy condition resulting from a line fault so that normal line tests may be performed 1 Momentarily press 9 on the telephone keypad 2 The DATU RT responds with the voice message PERMANENT SIGNAL RELEASE 3 After executing the required sequence of operations the DATU RT tests the subscriber line to determine whether the busy condition has been cleared The result of this test is then announced as follows OK if the line is idle BUSY LINE if the line is busy New Subscriber Line Keypad Digit This function releases the currently held subscriber line so that another subscriber line may be accessed 1 Momentarily press the key on the telephone keypad 2 The DATU RT responds with DATU RT dial tone 3 Enter the new subscriber line number as done previously in the Subscriber Line Access section The voice message TRUNK DISCONNECT ERROR indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will not be available until the NTT problem is corrected Selecting Line Preparation Functions 4 27 Hold Test Keypad Digit n The Hold Test feature provides a
61. he entries for this PGS ID then prompt DIAL POUND IF OK Press to save the Pair Gain System entry any other key cancels the request and returns the user to the main menu After saving the Pair Count record and prompting OK the DATU RT begins accepting data for the next pair count record for this Pair Gain System ID by asking for the next Start of Pair Count 9 Next Pair Gain System ID After entering the final Pair Count Record for this Pair Gain System ID enter pound when DATU RT prompts start of pair count to start entering a new Pair Gain System ID and count record Reading One Pair After accessing the DATU with the System password perform the following Gain System Record steps to Read One Pair Gain System Record see Figure 3 4 1 Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options 2 Enter 2 to read one Pair Gain System Record Dial the DAT LERT Aone NM unniber Dial 9 to Read or Change Pair Gain System Pa rameters Dial 2 to Read Ore i Fair ain System Record Enter the Fair Sain System ID Dial Star to end THe s a PGS iO har hes already Geen Drogrentieed 2nd VOU WENI fo rez of ts Deir COUNT records DAYO W stent rearing al Me pair count recors for me PSS iG CALE Figure 3 4 Reading One Pair Gain System Record Programming System Functions 3 19 3 Pair Gain System ID DATU RPT will prompt for the Pair Gain System
62. his section contain discussions of user procedures for conditioning subscriber lines contained within the loop plant as well as those served by carrier systems These procedures are organized as follows Normal Separate Line Access of Local CO Served Lines Local Metallic Loops a Single Line Access of Local CO Served Lines Local Metallic Loops Normal Separate Line Access of Carrier System Lines a Single Line Access of Carrier System Lines The appropriate normal separate line procedure is recommended whenever possible as it affords increased flexibility in conditioning and testing the line If a separate line is not available refer to the appropriate Single Line Access procedure Normal Separate Line Access Local Metallic Loops The DATU RT may be accessed using the line that is to be conditioned or a separate line This section describes the preferred method of separate line access of a metallic loop served from the CO Selecting Line Preparation Functions DATU RT DATU RT DATU RT Access To access the DATU RT 1 2 Dial the telephone number assigned to the DATU RT Wait for uninterrupted 440 Hz DATU RT dial tone indicating DATU RT has answered and is ready for password entry Enter your password using the telephone keypad Note that DATU RT dial tone is removed upon entry of the first password digit The first digit of your password must be entered within 7 seconds after DATU RT dial tone
63. ice message OPEN LINE When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Selecting Line Preparation Functions 4 17 Short Subscriber Line Keypad Digit 7 The Short Subscriber Line function provides an electrical short across the subscriber s Tip and Ring leads 1 2 3 Momentarily press 7 on the telephone keypad DATU RT responds with the voice message SHORT LINE When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Normal Separate Line Access Carrier System Lines DATU RT Access This subsection describes methods and procedures for separate line access of a subscriber loop served from a Carrier System Remote Terminal The procedures contained in this section are applicable only when conditioning a carrier system line using a separate line to access the DATU RT Note The DATU RT dial tone is removed upon entry of the first password digit To access the DATU RT Dial the telephone number assigned to the DATU RT Wait for an uninterrupted 440 Hz DATU RT dial tone indicating DATU RT has answered and is ready for password entry Enter your password using the telephone keypad The first digit of your password must be entered within 7 seconds after DATU RT dial tone is heard If more than 7 seconds elapses before entry of the first digit or between subsequ
64. ilable options 2 Enter 6 to add a Pair Count Record 3 22 Programming System Functions DATU RT Dial the DATU RT Access Number Dial 6 Add Pair Count Recomm Enter the Pair Gain System ID Dial Star to End Pas ea PGS iD that has already i beer started and you vant te add Eni gt range to tre records i Enter Start of Pair Count Ifa pound is i Dial Star to End Fentemd fr Start The enny E the west count of the new Pat Count tof Pair Count This a i Record A star wil not be accepted by the DATU z loop val l kesuse you waid be dupkoabng the counts of thre l continue until a pound i records akeady entered EDE ARA is entered for the start of pair countat which ime DAT U will return to hy he Main Menu Enter End of Pair Count Dial Star End Enter RT Access Phone t Number DialStar End 3 H ter O then star to end jino MAU is gong te be ksled t Dial Star if Bypass Pair Dial Zem if No Bypass Pair DATU Will Read Back the Information fr This PairGount Recon and Say Dial Pound ifOK i thewnieomber Js correct enter a pound i an porter of theinipomabor Js incertect p enter any Key bita pound astar vas not entered forthe start of par count then DATU v promot forthe start of gar count This Js the start of thecount on the next locabon of MAU in this Pair Gain System iD i Wo DATU will Return to the wain Nenu and Start Speaking the Op
65. ions are audible but unintelligible Features that would be disruptive to a call in progress are not available if the DATU RT detects a busy line condition These functions include High Level Tone Open Subscriber Line and Short Subscriber Line If conversation or data transfer activity is heard on a line that the DATU RT has reported as idle do not activate these functions 3 Atthe end of the monitoring period the DATU RT generates two short bursts of 614 Hz tone to indicate that the Audio Monitor period has ended Another function may be selected during the monitor interval Doing so immediately enables the selected function and cancels the monitor feature If no function is selected within the 60 second interval following expiration of the monitor period the DATU RT announces it s Main Menu 4 6 Selecting Line Preparation Functions DATU RT DATU RT Menu Item Selection DATU RT functions are presented in a menu format through voice messages Main Menu functions are announced as follows a DIAL 2 FOR AUDIO MONITOR a DIAL 33 FOR TIP RING SHORT TO GROUND a DIAL 37 FOR RING GROUND a DIAL 38 FOR TIP GROUND a DIAL 44 FOR TIP RING HIGH LEVEL TONE a Dial 47 for RING HIGH LEVEL TONE a DIAL 48 FOR TIP HIGH LEVEL TONE a DIAL 5 FOR LOW LEVEL TONE a DIAL 6 TO OPEN SUBSCRIBER LINE a DIAL 7 TO SHORT SUBSCRIBER LINE a DIAL STAR TO KEEP TEST AFTER DISCONNECT a DIAL POUND FOR NEW SUBSCRIBER LINE If two or
66. is heard If more than 7 seconds elapses before entry of the first digit or between subsequent digits the DATU RT disconnects and releases the line DATU RT dial tone is restored upon successful entry of a valid password DATU RT disconnects and releases the line 7 seconds after the last key depression if an invalid or incomplete password is entered The voice message ERROR BAD NO TEST TRUNK indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will not be available until the NTT problem is corrected Subscriber Line Access Note DATU RT dial tone is removed upon entry of first digit Note ddd dddd represents the telephone number of the line under test To access the subscriber s line 1 Dial the subscriber s telephone number If the first digit of the subscriber s telephone number is not entered within 7 seconds of DATU RT dial tone the voice prompt DIAL SUBSCRIBER LINE NUMBER is issued If no digits have been entered after 60 seconds of DATU RT dial tone DATU RT disconnects and releases the line Unless the DATU RT is set to 10 digit dialing mode entry of a telephone number not served by the CO causes the DATU RT to issue the following voice message INVALID PREFIX DIAL SUBSCRIBER LINE NUMBER If the selected subscriber line is idle the DATU RT accesses the line and you will hear the voice message CONNECTED TO ddd dddd OK AUDIO MONITOR You may select a line pr
67. itor Keypad Digit 2 The Audio Monitor function provides a means by which a busy line status reported by the DATU RT may be verified To protect the privacy of the subscriber conversation is audible but unintelligible 1 2 Momentarily press 2 on the telephone keypad The DATU RT announces AUDIO MONITOR Monitor the line as required Although it may be selected Audio Monitor is not functional on an idle carrier system line unless the bypass pair is used Audio Monitor is automatically disabled at regular intervals to insure that the DATU RT is able to detect DTMF tones if an exceptionally strong audio signal is present This occurs at regular six second intervals and is of approximately two seconds duration Short to Ground Keypad Digit 3 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE The Short to Ground function is used to connect the Tip Ring or both leads to Ground potential If only a single lead Tip or Ring is selected the opposite lead is unterminated 1 2 Momentarily press 3 on the telephone keypad The DATU RT issues the following submenu prompt a DIAL 3 FOR TIP RING SHORT TO GROUND b DIAL 7 FOR RING GROUND c DIAL 8 FOR TIP GROUND Momentarily press the key corresponding to the desired subfunction The DATU RT identifie
68. means by which a line condition asserted by the DATU RT is maintained for a specified time interval after disconnecting from the DATU RT The duration of the hold test interval is entered through the telephone keypad and is specified in minutes Any interval may be entered however the DATU RT will not maintain a line condition longer than the access timeout interval The programmed function is automatically cancelled by the DATU RT when the specified time interval or if of a shorter duration the access timeout interval has elapsed 1 Momentarily press the star key on the telephone keypad 2 The DATU RT responds with the following voice prompt DIAL NUMBER OF if access timeout interval is MINUTES 10 minutes or less DIAL 2 DIGITS FOR if access timeout interval is more NUMBER OF MINUTES than 10 minutes 3 Enter the desired hold time via the telephone keypad If the access timeout interval is set for 10 minutes or less this must be a single digit entry Entry of a 0 is interpreted as an entry of 10 minutes If the access timeout interval is set for greater than 10 minutes the hold time interval must be entered as a two key sequence This means that a leading 0 must be entered for a hold time interval of 9 minutes or less If no hold time entry is made a default interval equal to one half the access timeout interval is used 4 The DATU RT responds with the voice prompt PLEASE HANG UP 5 The selected line conditioning fu
69. n place between the host element of the DATU RT at the CO and the RT 4 After the Pair Gain System ID has been successfully entered the DATU RT issues the prompt PLEASE ENTER PAIR NUMBER DIAL STAR TO END Enter the pair number for the subscriber s line using the telephone keypad 5 The DATU RT provides verification of the Pair Gain System ID and pair number entry with a voice message If valid data was entered the DATU RT announces ACCESSING followed by the RT information previously entered If the information is not valid or if the bypass pair was selected USING BYPASS PAIR is heard Note ddd dddd represents the 6 Using a dedicated POTS line and modem interface the CO element of phone number of the subscriber s the DATU RT attempts to establish communication with it s slave line under test counterpart at the RT If this operation is successful the following is announced RT TEST SYSTEM CONNECTED TO ddd dddd OK AUDIO MONITOR Note When set to 10 digit dialing 7 If unsuccessful in establishing communications with the RT the RT mode the prompt will be ddd System announces FAILURE TO CONNECT If a bypass pair is in ddd dddad place between the selected RT and the CO the DATU RT additionally prompts DIAL ONE TO USE BYPASS PAIR DIAL POUND FOR NEW SUBSCRIBER LINE 8 If no bypass pair is available DATU RT dial tone is provided so that a new subscriber line number may be entered Alphanumeric Pair Gain System ID Entry
70. n the specified time interval or if of a shorter duration the access timeout interval has elapsed 1 Momentarily press the star key on the telephone keypad 2 The DATU RT responds with the following voice prompt DIAL NUMBER OF if access timeout interval is MINUTES 10 minutes or less DIAL 2 DIGITS FOR if access timeout interval is more NUMBER OF MINUTES than 10 minutes 3 Enter the desired hold time via the telephone keypad If the access timeout interval is set for 10 minutes or less this must be a single digit entry Entry of a 0 is interpreted as an entry of 10 minutes If the access timeout interval is set for greater than 10 minutes the Hold Time interval must be entered as a two key sequence This means that a leading 0 must be entered for a hold time interval of 9 minutes or less If no hold time entry is made a default interval equal to one half the access timeout interval is used 4 The DATU RT responds with the voice prompt PLEASE HANG UP 5 The selected line conditioning function remains active for the specified Hold Time interval or if of a shorter duration the access timeout interval Single Line Access Local Metallic Loops This subsection describes the methods and procedures associated with single line access of a metallic loop served from the CO The procedures contained in this section should be used when it is necessary to access the DATU RT on the same line that is to be conditioned
71. n the technician enters a valid password and ends when the RT System becomes idle Access Single Line This timing period begins when the hold time set by the technician during single line access preparation starts and ends when the RT System becomes idle Job This timing period begins when the dialed subscriber line is connected to the NTT and ends when the technician disconnects or enters a pound to access a new subscriber line Function This timing period begins when the technician enters dial code for a line preparation function The time period ends when another line preparation function is requested or upon disconnecting from the RT System Pair Gain System Record Table The RT System must be programmed for the Pair Gain Systems and Pair Counts that will be used A total of 212 Pair Gain System Records may be programmed into the RT System DATU RT Installation Contents DATU RT Considerations for Installation All Central Offices NEAX 61 2B ESS DMS 10 and DMS 100 5 ESS Installation Procedures PGA and MAU Installation Instructions General Installation Procedures Set Option Switches Install in MFT Bay Indication LEDs Access Line Modem Line No Test Trunk 2 2 2 2 2 4 2 5 2 5 2 5 2 6 2 6 2 6 2 8 2 8 2 8 2 9 2 9 2 9 Installation 2 1 Considerations for Installation The DATU RT is compatible with most CO switches see Table 2 1 For specific information concernin
72. nction remains active for the specified hold time interval or if of a shorter duration the access timeout interval Single Line Access Carrier System Lines This subsection describes the methods and procedures associated with single line access of a subscriber loop served from a Carrier System RT The procedures contained in this section should be used when it is necessary to access the DATU RT on the same line that is to be conditioned 4 28 Selecting Line Preparation Functions DATU RT DATU RT DATU RT Access To access the DATU RT 1 2 Dial the telephone number assigned to the DATU RT Wait for an uninterrupted 440 Hz DATU RT dial tone indicating DATU RT has answered and is ready for password entry Enter your password using the telephone keypad Note that DATU RT dial tone is removed upon entry of the first password digit The first digit of your password must be entered within 7 seconds after DATU RT dial tone is heard If more than 7 seconds elapses before entry of the first digit or between subsequent digits the DATU RT disconnects and releases the line DATU RT dial tone is restored upon successful entry of a valid password DATU RT disconnects and releases the line 7 seconds after the last key depression if an invalid or incomplete password is entered The voice message ERROR BAD NO TEST TRUNK indicates the DATU RT has detected an abnormal condition on the NTT Line conditioning functions will n
73. ntering and go on hook immediately Table 3 1 Factory Provided System Function Values Program Function Values System Password 2222222 User Password 1111 Prefix Table Empty Job Access and Function Counters 0000 Dialing Method MF with Wink Number of Digits 7 Access Time Out 10 Minutes and Resettable Permanent Signal Release Disabled Pair Gain System Record Table Empty Note Program function values are stored in permanent memory except the System password is reset to 2222222 whenever the power is removed from the DATU RT for more than seven seconds Programming System Functions 3 3 Table 3 2 System Menu Parameters Main Menu First Sub Menu SECOND SUB MENU Third Sub Menu ae Description ae Description Lae Description baa Description 1 To Change Passwords 1 Set System Password 2 Set User Password 2 Select Busy Test 1 Select Busy Test 4 Standard Busy Test Dialing Method Trunk 5 5 ESS Busy Test Sleeve Sensing 6 Special Busy Test 2 Select Dialing Method 1 MF w Wink 2 MF 3 Pulse w Wink 4 Pulse 5 MF w Reversal Sensing 6 Pulse w Reversal Sensing Select Trunk Sleeve 1 _ Standard Sleeve Sensing 3 Sensing 2 Special Trunk Sleeve 1 Trunk Share Sensing 2 No Trunk Share 4 Busy Test Timer 3 Read or Change 3 Add Prefix Prefixes 4 Delete
74. o select another High Level Tone subfunction both Main and submenu selections must be made 4 10 Selecting Line Preparation Functions DATU RT DATU RT Low Level Tone Keypad Digit 5 This function places a 577 Hz low level 12 dBm interrupted tone bursts on both the Tip and Ring leads Because the tone signal is longitudinal use of this function does not disrupt traffic on a busy line Tone bursts can be heard only on a telephone instrument connected between Tip or Ring and Ground This function is typically used for the purpose of conductor or pair identification on a busy subscriber line 1 Momentarily press 5 on the telephone keypad 2 The DATU RT responds with the voice message LOW LEVEL TONE The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released Open Subscriber Line Keypad Digit 6 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces BUSY LINE if an attempt is made to invoke this function on a busy line The Open Subscriber Line function removes Battery and Ground potentials from the subscriber s Tip and Ring leads 1 Momentarily press 6 on the telephone keypad 2 The DATU RT responds with the voice message OPEN LINE The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is r
75. oidal signal is translated from one of the 12 character sets see Table 6 1 a Frequency deviation is less than 2 Signal strength per frequency is 5 to 15 dBm Digit duration is 70 ms a Interdigital pause is 70 ms Dial Pulse Addressing Parameters Break ratio is 60 Repetition rate is 10 pulses per second a Interdigital time is 1 000 ms Sleeve Current Parameters Low current mode is 7 to 10 mA into 120 ohm sleeve High current mode is 50 to 70 mA into 120 ohm sleeve a Maximum external sleeve loop resistance is 700 ohms Test Function Parameters Open test resistance is greater than 20M ohms Tip and Ring shorted is less than 2 ohms Tone Test a Frequency is 577 Hz Frequency error is less than 3 6 4 Specifications DATU RT D Low Level Tone Test m Typical signal strength measured Tip to Ground or Ring to Ground Atthe CO is 12 dBm 3 dBm At 18 000 cable feet from the CO is 19 dBm High Level Tone Test Differential a Tip to Ring signal strength is 22 dBm 3 dBm a Tip to Ground or Ring to Ground signal strength is 17 dBm 3 dBm DATU RT Specifications 6 5
76. oming trunk level to access the subscriber line 4 5 7 or O for 10 Access Job and Function Counters The RT system provides the following event counters Access Records the number of times the User password has been successfully entered a Job Records the number of times the DATU RT successfully connects a subscriber line number to the NTT a Single Line Access Records the number of times the DATU RT connects the NTT to the line being used to access the DATU RT a Function Records the total number of times each individual line preparation function has been requested Overview 1 6 Note When alarm condition is due to RT system failure operation of Clear Alarm feature will not clear external alarm Overview Enable Disable Permanent Signal Release The permanent signal release function may be either enabled or disabled Clear Alarm Condition There are three conditions that will generate an alarm These conditions are Failing on three consecutive attempts to drop the NTT Sixteen consecutive unsuccessful attempts to enter a User or System password RT System failure Access Time Out Parameter This feature sets the maximum amount of time per access a technician can use the NTT to test a subscriber line Access Job and Function Timers The RT System provides the following activity timers that measure total activity time in hours and minutes Access Normal This timing period begins whe
77. on T amp R aanne Set witch S1 to Dil he DATJLC k wih 51 set tothe User seastty rd from the NTT DOTLELC pins 14 amp 1 the STD postio STD position Ref MFT Hock T1 amp Ri B Side and proceed romi 7 G G dyes DATLC rebre 440 Hr da tore DATU LC prompts iNo Ero BadNo Test Trunk D Yes ve Dia ram ber used ae i The S amp Gleads are reversed ora ko access the DATJLC Siin Prado SEE Ground is on be Seeve of be NTT Pine 12 amp 10 i and 7 seconds kter prompts Dial No Subsciber Line ber of he MFT block of BS1 amp BS2 B Side Notes i ie 2 Refer o he DATUELC Service manual Secton4 Progamming System Functions Page 3 Call Haris Technical Support Team ke echricalasdstance 4 This wil verify he DOTU LC response a known busy ire Figure 5 1 Fault Location Flow Chart Sheet 3 of 6 DATU RT Troubleshooting Guide 5 7 B DATJ RT ps E oon SaG gand ier p er EE Eee Vos No P No H Froide a dean balanced the accsssline pes ass line to the DAJU RT urtalanod and proceed from Ki The CO batt vokage must be No k the CO Eat Vota bis d between 46 and 541 Comet ower SAV or Belem 460 kago and proceed ftom Q DATIL RT prom S Era Bad Ne Tea rurk ba Note ardretume 440Hz tore 3 o F at S k the DATLL RT connected to a DAS 0010 without j MLT software Seo Seo y No te LT pegemed ial ke Vie f Al trunk wiringhasbeon No f Correct or complete i Not
78. one of the following voice messages TIP RING HIGH LEVEL if submenu item 4 selected TONE RING HIGH LEVEL TONE if submenu item 7 selected TIP HIGH LEVEL if submenu item 8 selected The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released The DATU RT does not remain in the High Level Tone submenu after the subfunction is selected To select another High Level Tone subfunction both Main and submenu selections must be made DATU RT Selecting Line Preparation Functions 4 25 Low Level Tone Keypad Digit 5 This function places a 577 Hz low level 12 dBm interrupted tone bursts on both the Tip and Ring leads Because the tone signal is longitudinal use of this function does not disrupt traffic on a busy line Tone bursts can be heard only on a telephone instrument connected between Tip or Ring and Ground This function is typically used for the purpose of conductor or pair identification on a busy subscriber line 1 Momentarily press 5 on the telephone keypad 2 The DATU RT responds with the voice prompt LOW LEVEL TONE The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released Open Subscriber Line Keypad Digit 6 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces BUSY LINE
79. onnects and releases the line Unless the DATU RT is set to 10 digit dialing mode entry of a telephone number not served by the CO causes the DATU RPT to issue the voice message INVALID PREFIX DIAL SUBSCRIBER LINE NUMBER The absence of error messages indicates that the DATU RT has accepted the subscriber s telephone number 4 14 Selecting Line Preparation Functions DATU RT Menu Item Selection DATU RT functions are presented in a menu format through voice messages Main Menu functions are announced as follows DIAL 33 FOR TIP RING SHORT TO GROUND DIAL 37 FOR RING GROUND DIAL 38 FOR TIP GROUND DIAL 44 FOR TIP RING HIGH LEVEL TONE DIAL 47 FOR RING HIGH LEVEL TONE DIAL 48 FOR TIP HIGH LEVEL TONE DIAL 6 TO OPEN SUBSCRIBER LINE DIAL 7 TO SHORT SUBSCRIBER LINE DIAL POUND FOR NEW SUBSCRIBER LINE If two or more options are associated with the selected function a corresponding submenu is announced after the Main Menu item is selected Table 4 2 presents a listing of both Main and submenu functions with their assigned keypad digits Note the correlation between the names assigned to certain Main Menu functions and the standard alphabetical arrangement of the telephone keypad EXAMPLE Short Ring to Ground Earth 3 has the letters E for Earth 7 has the letter R for Ring Hence 3 and 7 Grounded Ring Table 4 2 DATU RT Single Line Access Menu Items
80. ot be available until the NTT problem is corrected Subscriber Line Access Note DATU RT dial tone is removed upon entry of first digit To access a subscriber s line 1 Dial followed by the subscriber s telephone number If the first digit of the subscriber s telephone number is not entered within 7 seconds of DATU RT dial tone the voice prompt DIAL SUBSCRIBER LINE NUMBER is issued If no digits have been entered after 60 seconds of DATU RT dial tone DATU RT disconnects and releases the line Unless the DATU RT is set to 10 digit dialing mode entry of a telephone number not served by the CO causes the DATU RT to issue the following voice message INVALID PREFIX DIAL SUBSCRIBER LINE NUMBER The absence of error messages indicates that the RT System has accepted the subscriber s telephone number Selecting Line Preparation Functions 4 29 Remote Terminal RT Access To access a remote terminal Ts Following entry of a valid subscriber line number the DATU RT issues the voice prompt PLEASE ENTER PAIR GAIN SYSTEM ID DIAL STAR TO END Enter Pair Gain System ID using telephone keypad To condition line from CO using the bypass pair enter 0 Use the Alphanumeric Pair Gain System ID Entry section if the RT number includes alphabetic or punctuation characters Otherwise proceed to Step 1 in the Alphanumeric Pair Gain System ID Entry section If selected the bypass pair must be in place between th
81. s A Split Pair Gain System is one in which the same Pair Gain System has cable pairs at more than one metallic test path physical location shown in Figure 3 1 as PG1056 in the Elm St and 52nd St locations The DATU RT accommodates this split by allowing multiple Cable Pair Counts and Harris Remote Terminal Devices e g MAUs to be associated with each Pair Gain System ID An example of a Split Pair Gain System is shown in Figure 3 1 Figure 3 2 and in Table 3 5 An MLT test of a customer s line in this test path see Figure 3 1 is accomplished via an Remote Measurement Unit RMU at the DLC Remote Terminal eliminating the Metallic Bypass Pair running between the DLC Remote Terminal and the Central Office CO In this instance an MAU is required for metallic conditioning of the customer s line Metallic Test Path Pair Gain System 1056 Em St Cabinet Pairs 1201 through 1900 Oak St Vault Pair Gain System 103 Pairs All wre Figure 3 1 Testing with a Remote Measurement Unit From the Central Office letallic Test Path Paii Or ia Send St Cabinet Ope DATU RT Figure 3 2 Testing with a Metallic Bypass Pair Programming System Functions 3 13 Table 3 5 RT Table Example from Figure 3 1 and Figure 3 2 4 PG RT Access Telephone Pair Y lt Enter the District or other identifier here gt BP Test Number Comments N
82. s Test Unit Remote Terminal DATU RT System or RT System extends the field technician s testing capabilities of subscriber lines through the non metallic environment of a pair gain system Typical Pair Gain Systems include SLC 96 SLC Series 5 etc The RT system has three major components see Figure 1 1 the DATU RT the Pair Gain Applique Il SPOTS PGA IIS and the remotely located Metallic Access Unit MAU CENTRAL OFFICE does lites FOT Lites ICTUS CHANNEL TEST UHT DJ CHAPEL UNIT QW ORE CT AXESS TEST UHT Ma METALS ACCESS UMT MUM MULTIPLEXER Poul RGM PRU Ge Por C Pll GH TEST CONTROLLER HTT HO TEST T FUE GOT CENTRAL OFA CE TEFH HIL Figure 1 1 DATU RT System Application Diagram Overview DATU RT Direct Access Test Unit Remote Terminal Note If the switch does not have The DATU RT is a printed circuit card that provides microprocessor control a MFT bay a Harris two card of line preparation functions voice prompted menus and status reports to card file part number 25460 002 the technician It allows technicians to access and perform specific loop is available This file is designed conditioning and tone generating functions on any working subscriber line fo mount into a 19 or 23 inch rack to prepare the line for use with field test equipment The card is installed in and takes two standard mounting the Metallic Facility Terminal MFT bay and connected to the Central Office
83. s the selected subfunction with one of the following voice messages TIP RING SHORT To if submenu item 3 selected GROUND RING GROUND if submenu item 7 selected 4 24 Selecting Line Preparation Functions DATU RT CO TIP GROUND if submenu item 8 selected The selected function remains in effect until another function is selected the access timeout interval is exceeded or the subscriber line is released The DATU RT does not remain in the Short to Ground submenu after the subfunction is selected To select another Short to Ground subfunction both Main and submenu selections must be made High Level Tone Keypad Digit 4 This function is not available if the DATU RT has determined that the line is busy The DATU RT announces the following error message if an attempt is made to invoke this function on a busy line ERROR BUSY LINE This function places a 577 Hz high level 22 dBm interrupted tone bursts on the Tip lead Ring lead or both If a single lead is selected the opposite lead is grounded This function is typically used for the purpose of conductor or pair identification 1 Momentarily press 4 on the telephone keypad 2 The DATU RT issues the following submenu prompt a DIAL 4 FOR TIP RING HIGH LEVEL TONE b DIAL 7 FOR RING HIGH LEVEL TONE c DIAL 8 FOR TIP HIGH LEVEL TONE 3 Momentarily press the key corresponding to the desired subfunction 4 The DATU RT identifies the selected subfunction with
84. star to end this portion of the entry Example Pair Gain System 1056 has counts 1201 to 1500 ona single test path 1201 should be entered as the Start Of Pair Count and 1500 should be entered as the End of Pair Count for this Pair Count Record 6 RT Access Phone Number DATU RT prompts ENTER RT ACCESS PHONE NUMBER DIAL STAR TO END This is the telephone number of the POTS channel unit assigned to the MAU at this location The phone number may be 1 to 11 digits long but will more than likely be a standard 7 digits If no MAU is installed enter 0 for the RT access phone number Dial star to end this portion of the entry 7 Bypass Pair DATU RT prompts for the availability of the bypass pair If a bypass pair is present enter a star If there is no bypass pair to the remote site enter a zero 0 Option Note A MAU may be placed in a remote site that is served by a DC test pair to allow for metallic conditioning of the customer s drop without having to consider the test pairs length to the serving CO By programming the presence of the test pair into the DATU RT the craftsperson has the option of using either the test pair or the MAU The DATU RT conditions the line with the MAU unless told to do otherwise and prompts the craftsperson to enter star 2k to use the bypass pair if the DATU RT cannot establish contact with the MAU 3 18 Programming System Functions DATU RT DATU RT 8 Confirmation DATU RT reads back t
85. startline to Receive busy tne DOTU RT access line erlpardground sart f fhe DTON RT card edge correcter are notshorted a quick rdease pins 17 419 repaci No T amp R O Side of he MET block oe 5 i n a r Repair open wiring be tasen DATU RT No Fingngvotoge ie Yer Egra vdageison the MET fam e and the card i i Ae e ade i PTi Tea hehar L atheMFT bbk connecter pire on sot ar npa le Riin Yes F ENo Provide the Tip and Ring of a funciona incoming only gound strt xag Ine te DATU RT cde connector pins 17 amp 19 re ively T amp R O Side ofte MFT bod Enter te Sprem Searity Code 222222 Note 1 Hf he access line is rot configured comecty it may be hung up he DOTURT fom the lasttin ethe uitwas accessed Release he No est turk and te access lire proceed B DATU RT prom pts OK No Replace Got srdreume deol FP ohar as Pope Dam we Figure 5 1 Fault Location Flow Chart Sheet 2 of 6 Troubleshooting Guide DATU RT Complete the program ming of the DATLELC System Functiore induding the Semir Passwords Prefix table Dialing Method and number of digits to access subscriber lines i from the DOTLELC io Locate miming Battery an Ground ard proceed from Dia the DOTLELC z D he iNo Correct T amp R reva Battery andlor Ground are mis a 4 Q J and proceed from QT onthe T amp R fom theNTT DOTLLC will retum i H Yes No Battery and Ground are reversed
86. stem Features DATU RT Permanent Signal Release Used in Step by Step offices this feature removes battery and ground on a permanent signal lines It is used only on busy lines Forced Disconnect Forced Disconnect allows the technician to disconnect from the RT system at any time by dialing Authorized personnel perform system programming functions that configure the RT system to operate with the switch and set and maintain the passwords counters and timers System Password The System or authorized personnel s password is required to access to the System functions It is a seven digit number preceded by a Dual Tone Multi Frequency DTMF x that is programmed into the RT System and can be changed as necessary User Password tThe User or technician s password is required to access all RT system line preparation functions The User password is a four digit code that can be changed in the System Mode Dialing Method Either multi frequency MF or dial pulse signaling to the No Test Trunk NTT with wink reversal sensing half wink or no wink may selected Provisions are included to accommodate the special dialing methods of other switches Prefix Table The RT System must be programmed for those subscriber line prefixes that will be accessed A total of 30 three digit prefixes can be programmed Number of Digits to Access Subscriber Line This feature sets the number of digits required by the switch at the inc
87. stems Programming Procedures and Tips 3 5 3 6 3 6 3 7 3 7 3 7 3 8 3 9 3 10 3 11 3 11 3 12 3 12 3 13 3 15 3 15 Programming System Functions 3 1 Time Outs and Disconnects 3 27 a Dialing a System or User Password 3 28 User Mode 3 28 System Mode 3 28 3 2 Programming System Functions DATU RT DATU RT Note After the programming of the DATU RT has been completed follow the fault location flow diagram Figure 5 1 and the RT System verification diagram Figure 5 2 to prove out the installation Authorized personnel may change any of the factory provided System functions see Table 3 1 by accessing the System Menu see Table 3 2 and using standard DTMF Dial Codes The menu options may be selected in any order During the programming of System functions no changes to the DATU RT parameters are made until the DATU RT asks for the confirmation with the voice prompt DIAL POUND IF OK A pound sign entered at this point causes the programming to take effect and returns to the Main Menu Any other entry abandons the operation Whenever the Main Menu is accessed or re accessed a 440 Hz tone is provided To move from the System authorized personnel functions to Line Preparation technician functions the existing connection to DATU RT must be released and re established When disconnecting from the DATU RT if the access line does not have calling party control use the forced disconnect feature by e
88. stems Mo f Eraso tho DOTLLATis Moa DOTLLAT responds PGTC akm orby pae par buy a Cal Ecris Suppert DATUAT fred hecace D Yn DALAT roperts Mo RT Table connected to lt test number OK part 24820 008 s es Ezg cll Tech Supper Yes DOTLLAT must hawo the Pair Gain table ammod Enter Pair Gain Cable number and dal a star with the MOL bekephone for each PG Fangs to ond Program the RT Table and stat at 1 Vos aon f To Net h Fage Figure 5 2 Verifying DATU RT System Operations Sheet 1 of 2 5 10 Troubleshooting Guide DATU RT From Previous Page s If DATU AT ha bem programmed DURT prompts Enter pair cart Diala to end tat there is nospits inthis PGSID then these Erter pair number ofthe PG cable hwo steps we automaticaly skipped aesochabed wth the subsariber number being accessed Dial a star to and If there is a Rilure to comment to the MAL DATAT wall respond wath one of two responces 1 RT system connenion failure connected to test number using bypass pair 2 RAT system connedionfailure connented to best number Channel Unt conmestion CATUART val respond Acsessing Pair Gain m System ID P Par P x Processing No Yes CATU RT responds RT systen connected 4 to best number OH Check to nakesure thecomect AT access phone number has been programmed intothe RT fable Yes Mo Dial bo short the ine and the technician Chek the wiring at the remote site to ensure cable head asit aves
89. submenu item 7 selected TIP GROUND if submenu item 8 selected When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time 4 16 Selecting Line Preparation Functions DATU RT High Level Tone Keypad Digit 4 This function places a 577 Hz high level 22 dBm interrupted tone bursts on the Tip lead Ring lead or both If a single lead is selected the opposite lead is grounded This function is typically used for the purpose of conductor or pair identification 1 2 Momentarily press 4 on the telephone keypad The DATU RT issues the following submenu prompt a DIAL 4 FOR TIP RING HIGH LEVEL TONE b DIAL 7 FOR RING HIGH LEVEL TONE c DIAL 8 FOR TIP HIGH LEVEL TONE Momentarily press the key corresponding to the desired subfunction The DATU RT identifies the selected subfunction with one of the following voice messages TIP RING HIGH LEVEL if submenu item 4 selected TONE RING HIGH LEVEL TONE if submenu item 7 selected TIP HIGH LEVEL TONE if submenu item 8 selected When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time Open Subscriber Line Keypad Digit 6 The Open Subscriber Line function removes Battery and Ground potentials from the subscriber s Tip and Ring leads 1 2 DATU RT Momentarily press 6 on the telephone keypad DATU RT responds with the vo
90. ter issue line cards for the access line On both DMS 10 and DMS 100 make sure the Tip and Ring pair is run between the NTT and the Metallic Test Access MTA Also make sure instructions are set in memory that tell which horizontal to use in the MTA 5 ESS To ensure that the remote Pair Gain System is accessible by the PGTC and TBCU one of the following generic maintenance upgrades in the 5 E must be installed Note BG Base Generic MU Maintenance Upgrade BG 5E2 2 MU 02 01 or later BG 5E3 1 MU BWM 87127 or later i Programmed not to check pa SER BPP confirmation per remote BG 5E5 Programmed not to check BPP confirmation per remote DATU RT Installation 2 5 Installation Procedures PGA and MAU Installation Instructions Refer to the PGA IIS Service Manual and the MAU Service Manual for installation instructions General Installation Procedures The DATU RT is a plug in printed circuit card that installs in a single slot of the MFT shelf and is connected to a NTT See Figure 2 3 Figure 2 4 and Figure 2 5 for typical connections for the appropriate switch MFT MFT MDE MDE paTURTaccess une A T Side E A Side B COMMICAT ONS Notes POSURE 1 MFT may beeither wo wire with BS1 ard BS leads or fourwire bay 2 Seeve retum opion Opton G of NTT mustbe installed 3 R1 leadof NTT must be comrected to BS leadof PGA Figure 2 3 Connections for All Systems Except 5 E
91. terval must be entered as a two key sequence This means that a leading 0 must be entered for a hold time interval of 9 minutes or less If no hold time entry is made a default interval equal to one half the access timeout interval is used 4 34 Selecting Line Preparation Functions DATU RT DATU RT The DATU RT responds with the voice prompt PLEASE HANG UP Disconnect from the DATU RT by hanging up Approximately 30 seconds after disconnect the DATU RT asserts the selected line conditioning function The selected line function remains active for the specified hold time interval or if of a shorter duration the access timeout interval Selecting Line Preparation Functions 4 35 This page intentionally left blank 4 36 Selecting Line Preparation Functions DATU RT Troubleshooting Guide Contents Initial LED and Voltage Checks Step 1 5 2 Calling the DATU Checks Step 2 5 2 Calling the Subscriber Line Checks Check 3 5 3 Cut Through Checks Step 4 5 4 Disconnect Checks Step 5 5 4 Fault Location Flow Chart Step 6 5 5 DATU RT Troubleshooting Guide 5 1 This Troubleshooting Guide applies to the DATU RT only It also assumes that all programmable features e g dialing method prefix list User and System passwords etc are already properly programmed for the switch application Initial LED and Voltage Checks Step 1 1 Plug the DATU RT into the MFT frame and observe the LEDs on the front panel of the DATU
92. tions Availabk Figure 3 8 Adding Pair Counts to a Pair Gain System Record DATU RT Programming System Functions 3 23 OO Aaaa aaa 3 Pair Gain System ID DATU RT prompts for the Pair Gain System ID PGS ID This entry is the identifier of a Pair Gain System ID that has previously been programmed into the DATU RT e g Pair Gain System 1056 on Elm Street as seen in Figure 3 1 If unsure of exact PGS ID to be entered escape by entering pound and then read all Pair Gain System Records see Table 3 5 Dial star to end this portion of the entry Important DATU will not accept 4 Start of Pair Count DATU RT prompts for the start of pair count This a star in this entry because is the lowest cable pair count 1 to 4 digits of the new Pair Count represents 0 9999 which by Record to be programmed into the DATU RT Dial star to end this definition overlaps counts of any portion of the entry existing pair count records 5 End of Pair Count DATU RT prompts for the end of pair count This is the highest cable pair count 1 to 4 digits in this Pair Count Record for this metallic test path See example below Dial star to end this portion of the entry Example Pair Gain System 1056 has new counts 1501 through 1700 in the 52nd Street Cabinet 1501 should be entered as the Start Of Pair Count and 1700 should be entered as the End of Pair Count for this new Pair Count Record see Figure 3 2 6
93. tone frequency is 440 Hz 8 Hz a Harmonic distortion is less than 10 6 2 Specifications DATU RT DATU RT Table 6 1 DTMF and MF Decoding DTMF Dial Decoding Each incoming dual tone signal is translated into one of the 12 character sets see Table 6 1 Frequency deviations of up to 2 5 are accepted and all deviations greater than 3 5 are rejected DTMF tones greater than 50 ms are accepted Interdigit timing is greater than 40 ms and less than seven seconds are accepted Signal strength per frequency of 20 to 0 dBm are accepted Voice Message Output Average voice level is 13 dBm Voice frequency range is 200 to 3 000 Hz Frequency Groups Character DTMF MF Set Low High Low High 1 697 1209 700 900 2 ABC 697 1336 700 1100 3 DEF 697 1477 900 1100 4 GHI 770 1209 700 1300 5 JKL 770 1336 900 1300 6 MNO 770 1477 1100 1300 7 PRS 852 1209 700 1500 8 TUV 852 1336 900 1500 9 WXY 852 1477 1100 1500 941 1209 0 941 1336 1300 1500 941 1477 KP 1100 1700 ST 1500 1700 No Test Trunk Interface Tip and Ring Parameters in Idle Mode Resistance is greater than 20M ohms Specifications 6 3 Tip and Ring Parameters in Active Mode a Resistance is 100 to 180 ohms at 20 to 90 mA a Maximum DC current is 90 mA Typical AC impedance at 1 kHz is 660 ohms MF Output Parameters a Each outgoing dual tone sinus
94. ts Note the correlation between the names assigned to certain Main Menu functions and the standard alphabetical arrangement of the telephone keypad DATU RT Selecting Line Preparation Functions 4 31 The following explains the selection and use of the functions available in the Single Line Access mode Announce Main Menu Keypad Digit 1 Selection of this function causes the DATU RT to announce it s Main Menu If selected while in a submenu DATU RT announces ERROR followed by the Main Menu 1 2 Momentarily press 1 on the telephone keypad The DATU RT announces it s Main Menu Short to Ground Keypad Digit 3 The Short to Ground function is used to connect the Tip Ring or both leads to Ground potential If only a single lead Tip or Ring is selected the opposite lead is unterminated 1 2 Momentarily press 3 on the telephone keypad The DATU RT issues the following submenu prompt a DIAL 3 FOR TIP RING SHORT TO GROUND b DIAL 7 FOR RING GROUND c DIAL 8 FOR TIP GROUND Momentarily press the key corresponding to the desired subfunction The DATU RT identifies the selected subfunction with one of the following voice messages TIP RING SHORT TO if submenu item 3 selected GROUND RING GROUND if submenu item 7 selected TIP GROUND if submenu item 8 selected When prompted enter the desired hold time interval and hang up for detailed instructions refer to Setting the Hold Time 4
95. turn to the fain Wenu and Start Speaking the Options Avai kable Figure 3 3 Setting Pair Gain System Record Programming System Functions 3 17 Important If all of the pairs in this Pair Gain System ID are to be accessed by this one MAU then enter a star at this time By entering a star pair counts 0 through 9999 are automatically associated with the PGS ID DATU RT does not prompt for end of pair count 3 Pair Gain System ID DATU RPT prompts for the Pair Gain System ID PGS ID This entry can be up to 16 alphanumeric characters in length For example the Pair Gain System 1056 on Elm Street could be entered as simply 1056 or with alphanumerics as ELM The Pair Gain System Identifier should be entered in such a way as to allow the outside craftsperson to readily obtain this information from the trouble ticket Do not use pound or star as a part of the PGS ID as these keys are reserved for other functions Dial star k to end this portion of the entry 4 Start of Pair Count DATU RT prompts for the start of pair count This one to four digit value represents the lowest pair count associated with this Pair Gain System ID for a given metallic test path Dial a star to end this portion of the entry 5 End of Pair Count DATU RT prompts for the end of pair count This value is the highest pair count in this Pair Gain System ID programmed for this metallic test path see example below Enter a
96. uired To Access Subscriber a Enter3toadda prefix Lines paragraph before entering any prefixes Enter the three digit prefix and if applicable steering digit to be added to the prefix table DATU RT will repeat the prefix and steering digit if provided and prompt DIAL POUND IF OK Enter a to complete the addition of the prefix Enter the next prefix and if applicable steering digit and DATU RT will respond as previously described When the last prefix has been added and accepted enter a to select a new item from the Main Menu b Enter 4 to delete all prefixes DATU RT will repeat the selected option and ask for a confirmation with the prompt DIAL POUND IF OK Enter a to delete all prefixes and select a new item from Main Menu Enter any other key to cancel the delete all prefixes operation and return to Main Menu c Enter 5 to delete a single prefix Enter the three prefix digits to be deleted DATU RT will repeat the prefix and prompt DIAL POUND IF OK Enter a to complete the deletion of the prefix and to select a new item from the Main Menu d Enter 6 to read all prefixes DATU RT will read all the prefixes and applicable steering digits from the Prefix Table and return to the Main Menu Programming System Functions 3 9 Reading or Clearing Timers Note When reading the timers 1 Enter 4 and DATU RT will announce the available options the DATU RT will announce the function and then the time in
97. unter readout is 9 999 After each counter is read a must be entered to go to the next counter in sequence The may be entered at any time but any other key will stop the readings and return to the Main Menu To read or clear counters Enter 7 and DATU RT will announce the available options a Enter 1 to read Counters Enter 1 to read Usage Counters Enter 2 to read Function Counters DATU RT will read the counters chosen b Enter 2 to clear counters Enter 1 to clear Usage Counters Enter 2 to clear all Function Counters Enter 3 to clear ALL Counters DATU RT will repeat the counters to be cleared then prompt DIAL POUND IF OK 2 Enter and select a new item from the Main Menu Enabling or Disabling Permanent Signal Release Note Permanent Signal Release requires access to a standard Permanent Signal Release Trunk 3 12 Programming System Functions To enable or disable permanent signal release Enter 8 to enable or disable permanent signal release After the 8 is dialed the DATU RT will prompt with the state that the permanent signal release will be changed to if is entered DATU RT will then prompt DIAL POUND IF OK 2 Enter and select a new item from the Main Menu DATU RT Split Pair Gain Systems Overview Example Part 1 Example Part 2 If you are already familiar with Split Pair Gain Systems skip to the section marked Testing with Split Pair Gain System

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