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1. 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 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
2. 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 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
3. 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 Systems 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 ee OE ee TT RMU hd Pa
4. 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 the 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
5. 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 digits 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 Functio
6. 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 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 17
7. 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 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 Keyp
8. 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 acomplete 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 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 on a 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 OO Ol NI IO oa AJOJ nm g Al vlz 0 o n AE ama a A A E a E a a e l
9. Main Menu First Sub Menu Second Sub Menu Third Sub Menu Pas Description eG Description oe Description er 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 See 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 Vs Dial the DATU RT access number The DATU RT will trip the ring and return a 440 Hz acknowledgment tone Enter and t
10. 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 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 Momentari
11. 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 2k 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 to use the bypass pair if the DATU RT cannot establish contact with the MAU 3 18 Programming System Functions DATU RT 8 Confirmation DATU RT reads back the 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 Syste
12. 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 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
13. 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 DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters Dial 7 to Delete One Pair Count Record Enter the Pair Gain System ID Dial Star to End This is a PGS ID that has already been entered and you want to delete a Pair Count record from DATU RT Will Recite the Entire Record Including RT Access Phone Number and Bypass Pair Status DATU RT Will Prompt Dial Pound to Delete Pair Count Record Enter a Pound if You Wish to Delete This Pair Count Record DATU_040 Any other key will cancel the deletion Figure 3 9 Deleting One Pair Count Record DATU RT Programming System Functions 3 25 E 1 Enter 9 to read or change Pair Gain System Parameters The DATU RT announces the available 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
14. 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 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 throug
15. 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 Communications Product Division 809 Calle Plano Camarillo CA 93012 8519 USA IS www harris com 1 800 437 2266 1996 Harris Corporation Written Printed in USA 0ll 724820 003 Issue 8 November 1999 next level solutions
16. Printed in USA 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 Description The Di
17. 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 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 Us
18. SUB MENU Third Sub Menu be Description ae Description a Description ane 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 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 O for to Select Subscriber s 10 for number Line of digits 6 To Set Access Time Oor1 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
19. 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 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 whethe
20. busy line DATU RT Figure 5 1 Fault Location Flow Chart Sheet 3 of 6 Troubleshooting Guide 5 7 Provide a clean balanced access line to the DATU RT and proceed from The CO batt voltage must be Is the CO Batt Voltage between 46V and 54V Correct over 54V or Below 46V voltage and proceed from 11 DATU RT prompts Error Bad No Test Trunk and returns 440 Hz tone Yes See Note Is the DATU RT connected to a DMS100 10 without MLT software All trunk wiring has been Correct or complete completed and verified wiring and proceed to be correct from Is the DATU RT programmed to dial the correct number of digits including steering digit if applicable DATU_018 Notes 5 Program the DATU RT dialing method for MF with reversal sensing Refer to Service Manual Proceed from 6 The NTT must receive a valid digit stream including KP and ST Refer to Service Manual Proceed from Figure 5 1 Fault Location Flow Chart Sheet 4 of 6 Troubleshooting Guide DATU RT RT monitors the line for 15 seconds jack ts ake sine Peere bs announces the available options u usy i test has been programmed into the DATU RT Refer to Programming System functions in this manual The Lo Sleeve LED is On Dial for a new subscriber line After receiving 440 Hz dial tone dial a line known to be idle that terminates in ete Proceed the CC w
21. 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 Monitor 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
22. horizontal side of the IDF DATU RT Installation 2 9 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 Systems 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 Note After the programming of Authorized personnel may change any of the factory provided System the DATU RT has been functions see Table 3 1 by accessing the System Menu see Table 3 2 completed follow the fault and using standard DTMF Dial Codes The menu options may be selected location flow diagram in any order Figure 5 1 and the RT System verification diagram Figure 5 2 During the programming of System functions no changes to the DATU RT to prove out the installation parameters are made until the DAT
23. 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 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 4 24 Selecting Line P
24. 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 subfunction 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 Keypa
25. 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 PAIR 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
26. 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 counter 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
27. 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 PGA 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 o
28. the trouble ticket Do not use pound or star gt as a part of the PGS ID as these keys are reserved for other functions Dial star to end this portion of the entry Important If all of the pairs in 4 Start of Pair Count DATU RT prompts for the start of pair count This this Pair Gain System ID are to one to four digit value represents the lowest pair count associated with be accessed by this one MAU then this Pair Gain System ID for a given metallic test path Dial a star to enter a star at this time By end this portion of the entry entering a star pair counts 0 through 9999 are automatically 5 End of Pair Count DATU RT prompts for the end of pair count This associated with the PGS ID DATU RT does not prompt for end of pair count value is the highest pair count in this Pair Gain System ID programmed for this metallic test path see example below Enter a star to end this portion of the entry Example Pair Gain System 1056 has counts 1201 to 1500 on a 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
29. 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 Line Preparation Functions 4 7 Table 4 1 DATU RT Separate Line Access Main Menu Main Item Function Main Menu Key SubMe
30. 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 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 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 Bat
31. 0 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 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 RPT to issue the voice message INVALID PREF
32. AL 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 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
33. HARRIS Communications Products Division Direct Access Test Unit Remote Terminal DATU RT Model 24820 003 next level solutions Servi Manual A 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
34. IX 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 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 an
35. 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 concerning 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 S 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
36. Provide the Tip and Ring of a functional D and Ring of the configuration for incoming incoming only ground start line to DATU RT access line only and ground start the DTAU RT card edge connector are not shorted or quick release pins 17 amp 19 respectively T amp R A Side of the MFT block Repair open wiring between Ringing voltage is on the MFT frame and the card the DATU Rt card edge slot or install the DATU RT in connector pins 17 amp 19 a new MFT slot Ringing voltage is on T amp R A Side at the MFT block Provide the Tip and Ring of a functional Replace incoming only ground start DATU RT access line to the DATU RT card edge connector pins 17 amp 19 respectively T amp R A Side of the MFT block Replace DATU RT Enter the System Security Code 222222 Note 1 If the access line is not configured correctly it may be hung up DATU_0016 to the DATU RT from the last time the unit was accessed Release the No test trunk and the access line proceed to DATU RT prompts OK and returns 440 Hz dial tone Replace DATU RT Ye To Next es Page gt Figure 5 1 Fault Location Flow Chart Sheet 2 of 6 Troubleshooting Guide DATU RT Complete the programming of the DATU LC System Functions including the System User Passwords Prefix table Dialing Method and number of digits to access subscriber lines Dial to dis
37. 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 300 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 Bau
38. 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 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 telephon
39. T 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 System 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 swit
40. T 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 digit access to the NTT program the number of digits to access the subscriber s line as described in the To Set Number of Digits Required To Access Subscriber Lines paragraph before entering any prefixes This function is for entering reading and maintaining the office prefixes for the subscriber line numbers that the DATU RT will be accessing Enter 3 DATU RT will announce the available Prefix options a Enter 3 to add a prefix 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 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 Enter 5 to delete a s
41. 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 cause 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 calla 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
42. 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 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
43. U 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 entering 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 DATU RT Programming System Functions 3 3 Table 3 2 System Menu Parameters Main Menu First Sub Menu SECOND
44. U_020 Figure 5 1 Fault Location Flow Chart Sheet 6 of 6 Yes Single party Multi part Dial to end to end Yes To Next Page Bate palais oe oe line Place a normal call to the MAU in the site to be verified MAU should answer with modem tone that is served by an MAU Have an individual at the remote site to verify that the MAU is conditioning the line accessed at the remote site y coin line channel not available or bad channel test results returned DATU RT Prompts Enter Pair Gain System ID Preliminary Checks Ensure that the RT Table has been programmed DATU RT ith DATU RT is reporting that the PGA II has not recognized a valid channel unit signature Pair Gain Une Processing The pair gain line accessed must be a good and working POTS line served on Pair Gain Find a good PG number and start at 1 DATU RT reports the channel test results DATU RT responds PGTC alarm or by pass pair busy Yes Clear the PGTC failure and or check the inhibit lead status in the CO of the co located DLC systems Ensure the DATU RT is N No DATU RT reports No RT Table connected to lt test number gt OK part 24820 003 Yes Call Technical Support If so call Tech Support DATU RT must have the Pair Gain table programmed Enter Pair Gain Cable number and dial a star with the MAU telephone for each PG Cable Range Program th
45. ad 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 this 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
46. 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 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 succes
47. at 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 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
48. 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 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 c
49. ches 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 incoming 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
50. connect from the DATU LC Locate missing Battery and or Ground and proceed from Dial the DATU LC access number Yes Correct T amp R reversal and proceed from 11 Battery and Ground are reversed on T amp R DATU LC will return 40 Hz dial tone Yes No i Dial the DATU LC User security code from the NTT DATU LC pins 14 amp 13 MFT block T1 amp R1 B Side Battery and or Ground are missing on the T amp R from the NTT No Set switch S1 to the STD position and proceed from Yes No Is switch S1 set to STD position Re he er to DATU LC Service Manual Yes DATU LC returns 440 Hz dial tone No DATU LC is connected and 7 seconds later prompts Dial DATU LC prompts No ah No DATU LC returns No_ See Subscriber Line Number Error Bad No to a Pair Gain 60 IPM Note Test Trunk Applique PGA busy signal 3 Yes Yes Dial number used to access the DATU LC See Note The S amp G leads are reversed or a Ground is on the Sleeve of the NTT Pins 12 amp 10 of the MFT block or BS1 amp BS2 B Side Correct and Refer to PGA Service Manual Process from ES DATU_031 Notes nae 2 Refer to the DATU LC Service manual Section 4 Programming System Functions Page 3 Call Harris Technical Support Team for technical assistance 4 This will verify the DATU LC response to a known
51. d 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 To 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
52. d 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 the DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters Dial 8 to Set RT System Baud Rate DATU RT Will Prompt Please Enter Baud Rate Enter 3 0 0 For 300 Baud or 1 2 0 0 For 1200 Baud DATU RT Will Recite the Entry and Ask For a Pound if OK Dial Pound if OK DATU_041 Any other key will cancel the operation 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 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
53. d 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 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
54. e 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 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 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 with 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
55. e 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 MDF MDF A Side B A Si B DATU RTaccessune 7 Side B A Side B an u TO MODEM A Notes 1 MFT may be either two wire with BS1 and BS2 leads or four wire bay Ti T T1 T T Ra DATU RT PGA PGTC NO TEST 3 i ae TAUN 2 Sleeve return option Option G of NTT must be installed 3 R1 lead of NTT must be connected to BS2 lead of PGA Figure 2 3 Connections for All Systems Except 5 ESS with Integrated SLC Only DMS 10 and DMS 100 2 6 Installation DATU RT DATU RT ACCESS LINE MFT MFT MDF A SIDE B A SIDE B m T RI R DATU RT asi m PGA esi mi NOTEST TRUNK BS2 T1 B BS2_ Ri DATU_013 Lt IR Notes ania 1 MFT may be either two wire with COMMUNICATIONS 5 So ead A ae POTS LINE S1 an eads or four wire bay 2 Sleeve Return 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 ACCESS TG DATU Access DATU_012 Line MODEM Note MFT may be either two wire with Access to Metallic Test Access MTA must be provided Communications BS1 and BS2 leads or four wire bay by translation in MTA Horizontal tabl
56. e RT Table and start at 1 DaTU_o21 Figure 5 2 Verifying DATU RT System Operations Sheet 1 of 2 5 10 Troubleshooting Gui de DATU RT DATU RT responds RT system connected to lt test number gt OK From Previous Page Yes DATU RT prompts Enter pair count Dial to end lf DATU RT has been programmed that there is no splits in this PGSID then these Enter pair number of the PG cable two steps are automatically skipped associated with the subscriber number being accessed Dial a star to end If there is a failure to connect to the MAU DATU RT will respond with one of two responses 1 RT system connection failure connected to lt test number gt using bypass pair 2 RT system connection failure connected to lt test number gt Channel Unit connection Yes Check to make sure the correct RT access phone number has been programmed into the RT Table No A 7 Pa line a he bili Check the wiring at the remote site to ensure s je e a proper connection to the CTU test pair DATU 023 DATU RT will respond Accessing Pair Gain System ID lt gt Pair lt gt Processing Yes DATU RT Figure 5 2 Verifying DATU RT System Operations Sheet 2 of 2 Troubleshooting Guide 5 11 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 Spec
57. e 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 Yes HI amp lo Sleeve LEDs alternataely lit Yes Grd on Sleeve Alarm LED DATU RT pin 12 MFT No Access DATU RT in System Functions No Replace DATU RT On BS 1 B Side menu and clear alarm Alarm LED off and go to Yes No o Ti Next Page Power LED No DATU pins 11 amp 18 Yes On respectively Statue LED No Remove DATU RT from MFT slot No Replace DATU RT Blinking for 10 sec and re install Ok and goto C Yes Yes Release NTT Go to Correct wirin and go to G and go to O Ye CO Batt amp Grd on No Provide Batt and Grd Go to to the MFT card slot s Yes No Yes No Test Trunk No Grd on S No S and G No Bad hung up lead to NTT leads reversed NTT Yes Yes Remove Grd source Repair NTT and go to 4 and go to Yes Remove Grd Yo and go to DATU_015 DATU RT Figure 5 1 Fault Location Flow Chart Sheet 1 of 6 Troubleshooting Guide 5 5 5 6 Verify that the tip Is the DATU RT access line
58. e identically as POTS Line translation was done for the NTT access to MLT except that a different group 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 MPT shelves mount the DATU RT in the Transmission TU slot The card edge of the DATU RT is designed to plug directly into the MFT bays when wired in the standard configuration Plug the DATU RT in the assigned MFT slot and the DATU RT will power up automatically Indication LEDs Table 2 2 LED Functions 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 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 micropr
59. e 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 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
60. eted Any other key will cancel the deletion and return the programmer to the Main Menu Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options Enter 4 to delete one Pair Gain System Record Pair Gain System ID DATU RT will prompt for the Pair System ID to be deleted Confirmation DATU RT will recite the Pair Gain System Record as it was programmed then prompt you to dial pound to delete one Pair Gain System Record Enter star to end this portion of the entry Dial the DATU RT Access Number Dial 9 to Read or Change Pair Gain System Parameters Enter the System Password Dial 4 to Delete One Pair Gain System Record Enter the Pair Gain System ID Dial Star to End This is a PGS ID that has already been entered and you want to delete the entire record DATU RT Will Recite the Entire Record Including Pair Count Record s Enter a Pound if You Wish to Delete This Pair Gain Record DATU_037 Any other key will cancel the deletion Figure 3 6 Deleting a Pair Gain System Record Deleting All Pair Gain System Record s After accessing the DATU with the System password perform the following steps to delete all Pair Gain System Record s see Figure 3 7 1 Enter 9 to read or change Pair Gain System parameters At this time the DATU RT will announce the available options Programming Sy
61. f the counts in this Pair Gain System ID are served on the same test path same MAU then enter just a star and counts 0 through 9 999 will automatically be included Enter End of Pair Count Dial Star to End Enter RT Access Phone Number Dial Star to End Enter 0 then star to end if no MAU is going to be installed S Dial Star if Bypass Pair Dial Zero if No Bypass Pair DATU Will Read Back the Information for This Pair Count Record and Say Dial Pound if OK If the information is correct enter a pound If any portion of the information is incorrect enter any key but a pound Was Yes a Pound If a star was not entered for the start of pair count then DATU will prompt for the start of pair count This is the start of the count on the next location of MAU in this Pair Gain System ID Entered No DATU Will Return to the Main Menu and Start Speaking the Options Available DATU_034 Figure 3 3 Setting Pair Gain System Record DATU RT Programming System Functions 3 17 3 Pair Gain System ID DATU RT 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
62. fier 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 k 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 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 gt If there is no bypass pair to the remote site enter a 0 Option Not
63. 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 RT 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 Subscriber 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
64. gramming System Functions 3 7 E 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 Main 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 R
65. h 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 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 44
66. h 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 function 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 t
67. he 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 1 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 resoond 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 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 F
68. he 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 not 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
69. here the DATU RT is installed from 8 DATU RT prompts Connected to lt XXX XXXX gt OK DATU RT prompts Error Bad No Test Trunk Nae and returns 440 Hz tone 3 DATU RT did not see the correct signalling from the NTT Reaccess the line under test or select another line Go to 18 Dial 4 to send High level tone on the Line Notes T 7 If connected to an NTT that has no reversal the DATU RT is set for dialing an insufficient number of digits Refer to Service Manual and proceed from DATU_019 To 8 A tip and Ring short on a balanced line with CO Battery and Ground present Next will cause DATU RT to prompt Busy Line Select another line and Page proceed from g Figure 5 1 Fault Location Flow Chart Sheet 5 of 6 DATU RT Troubleshooting Guide 5 9 High level tracing tone is present at the station set Dial or hang up to disconnect from DATU RT High level tracing tone is present on the DATU RT s T1 amp R1 B Side of the MFT block Replace DATU RT Is the DATU RT conncected to a DMS 100 10 switch Yes Is the Metallic Test Access assignment Translate MTA TRK translated in the MTA TRK table and go to Correct wiring between MFT and NTT Go to Yes Correct wiring between T1 R1 B Side of High level tracing tone is present on the MFT block and T R of the MTA block T1 amp R1 B Side of the MFT block and go to No DAT
70. ifications 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 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 tha
71. ing 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 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
72. ingle 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 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 the DATU RT will announce the function and then the time in 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 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 a Cc Enter 4 and DATU RT will announce the available options 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
73. ir Gain System 1056 Elm St Cabinet Pairs 1201 through 1500 Pair Gain System 103 Oak St Vault Pairs All MAU DATU_032 Figure 3 1 Testing with a Remote Measurement Unit ee RRS S Metallic Test Pair From the Central Office 6 Mi Away Metallic Test Path hd Pair Gain System 1056 52nd St Cabinet Pairs 1501 through 1700 Pair Gain System 17 Pairs All Industrial Park Vault DATU_033 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 x PG RT Access Telephone Pair Y lt Enter the District or other identifier here gt BP Test Number Comments N lt Office where DATU RT lt DATU RT Access RT is located gt number gt Elm St 1056 1201 1500 lt A DLC sicas RMU 1 7 2inet 555 1111 n Mmber in this cable and pair group gt Oak St Vault 103 1 9999 DMS1U RMU 1 Justenter 555 1111 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 Vault Justenter 565 5990 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 AMAU may be placed in the test path eli
74. ling 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 conversations 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
75. ly 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 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
76. m 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 DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters Dial 2 to Read One Pair Gain System Record Enter the Pair Gain System ID Dial Star to end This is a PGS ID that has already been programmed and you want to read its pair count records DATU RAT will start reciting all the pair count records for this PGS ID DATU_035 Figure 3 4 Reading One Pair Gain System Record DATU RT Programming System Functions 3 19 ee 3 Pair Gain System ID DATU RT will prompt 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 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 RT will recite the entire Pair Gain System Record f
77. minating 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 Gain 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
78. n 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 sinusoidal 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
79. n 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 identification 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 R
80. ne 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 DMSs 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 later 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 f Programmed not to check BE pE 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 th
81. ns 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 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
82. nt range to the records Enter Start of Pair Count Dial Star to End This entry is the lowest count of the new Pair Count Record A star will not be accepted by the DATU because you would be duplicating the counts of the records already entered Enter End of Pair Count Dial Star to End If a pound is entered for Start of Pair Count This loop will continue until a pound is entered for the start of pair count at which time DATU will return to the Main Menu Enter RT Access Phone Number Dial Star to End Enter 0 then star to end if no MAU is going to be installed Dial Star if Bypass Pair Dial Zero if No Bypass Pair DATU Will Read Back the Information for This Pair Count Record and Say Dial Pound if OK If the information is correct enter a pound If any portion of the information is incorrect enter any key but a pound Was a Pound Entered Yes If a star was not entered for the start of pair count then DATU will prompt for the start of pair count This is the start of the count on the next location of MAU in this Pair Gain System ID DATU Will Return to the Main Menu and Start Speaking the Options Available DATU_039 Figure 3 8 Adding Pair Counts to a Pair Gain System Record DATU RT Programming System Functions 3 23 3 Pair Gain System ID DATU RT prompts for the Pair Gain System ID PGS ID This entry is the identi
83. nu 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 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
84. ocessor 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 DATU 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
85. ondition 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 in 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 DI
86. or 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 DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters Dial 3 to Read All Pair Gain System Records DATU RT will start reciting for Pair Gain System Records one PGS ID at a time DATU RT Will Read the Records for One PGS ID Then Prompt Dial Pound to Continue If the PGS ID is the last one in the Pair Gain System Record DATU RT will return to the Main Menu Dial Pound to Read the Records for the Next PGS ID DATU_036 Any other key will stop the read out and return to the Main Menu Figure 3 5 Reading All Pair Gain System Records 3 20 Programming System Functions DATU RT DATU RT Deleting One Pair After accessing the DATU with the System password perform the following steps to delete one Pair Gain System Record see Figure 3 6 Gain System Record Note By entering a pound at this point the Pair Gain System Record just recited will be del
87. 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 For all 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 CONNECTGR MFT FRAME LEAD DESIGNATION R_ A SIDE CO GROUND T_ ASIDE ae T1 B SIDE R1 B SIDE BS1 B SIDE BATTERY 48V BS2 B SIDE ae MDM T AS1 A SIDE BACKPLATE SIDE ALARM T1 A SIDE OF DATU RT GND EXT GND R1 A SIDE MDM R AS2 A SIDE T B SIDE DATU_010 MDM MODEM COMMUNICATIONS POTS LINE DATU RT Figure 2 1 DATU RT Card Pin Locations Installation 1 SWITCH N N WK WAY ANY WA AAD DUA N J2 WITH PINS JUMPERED Figure 2 2 DATU RT J2 and S1 Switch Locations Note Trunk translations are D normally available from the Switch Configuration Center SCC DATU RT System requires the same type of NTT translations as used by MLT Table 2 1 shows the typical trunk circuit associated with most switches 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 li
88. r 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 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
89. r 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 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 wit
90. rect Access 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 II SPOTS PGA IIS and the remotely located Metallic Access Unit MAU CENTRAL OFFICE HARRIS HARRIS DATU II PGA II List 3 24810 002 24820 003 CO SWITCH Access line POTS Line Fiber Cable Radio Satellite gt lt POTS Line DC Test Pair Port CTU CHANNEL TEST UNIT CU CHANNEL UNIT DATU DIRECT ACCESS TEST UNIT MAU METALLIC ACCESS UNIT METALLIC ACCESS UNIT MUX MULTIPLEXER 24840 001 PGA PAIR GAIN APPLIQUE HARRIS PGTC PAIR GAIN TEST CONTROLLER NTT NO TEST TRUNK COT CENTRAL OFFICE TERMINAL DATU_022 Line Under Test 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 condition
91. reparation 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 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
92. sful 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 preparation 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 dia
93. stem Functions 3 21 Dial the DATU RT Access Number System Password Dial 9 to Read or Change Pair Gain System Parameters Enter the Dial 5 to Delete All Pair Gain System Records DATU RT Will Prompt Delete All Pair Gain System Records Dial Pound if OK Enter a Pound if You Wish to Delete ALL Pair Gain Records eee Any other key will cancel the deletion Adding Pair Count Record s To Previously Entered Pair Gain Systems 3 22 Programming 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 After accessing the DATU with the System password perform the following steps to add new Pair Count Record s to an existing Pair Gain System ID see Figure 3 8 1 Enter 9 to read or change Pair Gain System parameters The DATU RT announces the available options 2 Enter 6 to add a Pair Count Record System Functions DATU RT Dial the DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters Dial 6 to Add Pair Count Record Enter the Pair Gain System ID Dial Star to End This is a PGS ID that has already been started and you want to add a Pair Cou
94. t lt n O r m 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 2 Enter 1 to set Pair Gain System Record 3 16 Programming System Functions DATU RT Dial the DATU RT Access Number Enter the System Password Dial 9 to Read or Change Pair Gain System Parameters System Record Dial 1 to Set Pair Gain If a pound is entered for Start of Pair Count This loop will continue until a pound is entered for the start of pair count at which time DATU will prompt for the next PGS ID Enter the Pair Gain System ID Dial Star to End 1 to 16 Alphanumeric characters identifying the Pair Gain System Enter Start of Pair Count Dial Star to End If all o
95. tery 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 recognize 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 Subscribe
96. 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 when 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
97. 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 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 th
98. 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 DIAL POUND IF OK Table 3 4 Timeout Parameters ar 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
99. unctions DATU RT DATU RT Selecting Busy Test To select busy test a 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 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 T 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 T 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 Pro

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