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Data administration

Page 45 of 66

DTI/CPI

Installation and data administration

LFAC

0-(3)-128

24-hour loss of frame alignment threshold.
If 0 is entered, trunks will be restored to service automatically.

BIPV

1-(3)-4,
1-(2)-4

Bit error rate (bipolar violation and CRC) monitoring limits.
Maintenance threshold.
Out-of-service threshold.

SRTK

1-(5)-24,
1-(30)-3600

Frame slip/tracking/monitoring limits.
Maintenance threshold, the minimum time, in hours, between slips.
Out-of-service threshold, the maximum number of slips per hour.

SRNT

1-(15)-1024,

1-(3)-1024

Frame slip/free run (non-tracking)/monitoring limits
Maintenance threshold, the minimum time, in seconds, between
10 consecutive slips. When the threshold is reached, warnings are
output to the maintenance TTY.
Out-of-service threshold, the minimum time, in seconds, between
10 consecutive slips. When the threshold is reached, the DTI loop
is taken out of service and a minor alarm is raised.

Note:

Automatic restoration is available only with Release 12 and later software.See

Digital Trunk

Interface/Computer-to-PBX Interface maintenance

(553-2811-500) for a description.

SRIM

1-127

Improvement timer in minutes.

SRMM

1-(2)-127

Improvement criteria. If non-tracking mode maintenance threshold
is exceeded SRMM or fewer times in duration of SRIM, trunks are
returned to service. If not, timer is restarted and monitoring
continues.

LFAL

1-(17)-10240
1-(511)-1024
0

Loss of frame alignment monitoring limits.
Maintenance threshold.
Out-of-service threshold, the number of frame losses in 24 hours.

Step 2

Gather data to add, modify, or remove a digital trunk loop. The following prompts in

LD 17

require a response. Defaults are in parentheses.

REQ

ADD, CHG,
OUT

Action Request (add, change, or remove data).

TYPE

CFN

Configuration data block.

CEQU

Yes, (No)

Change CE parameters.

DLOP

lll dd ff

Digital Trunk loop options.
lll = network loop number 0-159.
dd = number of data calls 0-(24).
ff = frame format D2, D3, D4, or ESF.
The default for frame format (ff) is ESF if prompt MODE is set to
PRI; D3 if MODE is set to DTI or LINK.

Prompt

Response

Comments

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Содержание QPC471

Страница 1: ...1991 1994 All rights reserved Printed in the United States of America Information is subject to change without notice Northern Telecom reserves the right to make changes in design or components as pr...

Страница 2: ...ision bars are omitted December 31 1992 Standard release 3 0 This document is issued to include technical updates Changes are noted with revision bars in the margins August 1 1993 Standard release 4 0...

Страница 3: ...0 Installation procedures 11 Removing the DTI card 15 ST STE systems 15 MS systems 18 N NT and RT systems 20 XN XT systems 24 21A 21 51 61 71 and 81 26 Echo Canceller interface 27 Clock Controller ins...

Страница 4: ...I DTI to Clock Controller cable 41 Data administration 43 DTI data administration 44 CPI data administration 51 Acceptance tests 53 Self test procedures 53 Automatic loop test 54 Automatic loop test p...

Страница 5: ...ings in DTI mode 17 Figure 5 Switch settings in DTI mode 18 Figure 6 MS cabling arrangement 19 Figure 7 Switch settings in DTI mode 20 Figure 8 N NT 51 RT and 61 single and half group cabling arrangem...

Страница 6: ...TI 7 Table 4 SW3 options for the QPC720 PRI DTI 8 Table 5 QPC720 PRI external connectors 8 Table 6 DTI cables and cable lengths 10 Table 7 Possible card locations by system 11 Table 8 Cable connection...

Страница 7: ...for QPC471 vintage A 29 Table 14 Clock Controller switch settings for QPC471 vintages B C D E F and G 30 Table 15 Clock Controller switch settings for QPC471 vintage H 31 Table 16 Clock Controller sw...

Страница 8: ...nd later for ST systems Release 12 and later for RT systems Release 15 and later for system options 21 21A 51 61 and 71 Release 18 and later for system options 21E STE and 81 Note Throughout this docu...

Страница 9: ...mation Meridian 1 system installation procedures 553 3001 210 Circuit card installation and testing 553 3001 211 ISDN Primary Rate Interface installation 553 2901 200 Digital Trunk Interface Computer...

Страница 10: ...Rate Interface PRI card Because this document deals with DTI functions both cards are referred to as the DTI card or DTI hardware whenever their function is identical Clock Controllers synchronize th...

Страница 11: ...example the NTQRY551 Channel Service Unit installed at each connection point of a private system to a registered common carrier trunk Echo Cancellers are required only if satellite transmission is use...

Страница 12: ...gure 1 illustrates the faceplate layout Table 1 QPC472 transmission equalization SW2 switch settings for DTI Switch S2 settings To repeatered facility To cross connect point 5 ON 0 45 m 0 150 ft 0 15...

Страница 13: ...ctive J3 Q P C 4 7 2 J1 J2 J4 J5 FLR ACT R ALM Y ALM LP BK To T1 trunk To Echo Canceller port Loopback test PRI or NT8D79xx to QPC720 PRI secondary reference J1 J2 PRI or NT8D79xx to QPC720 PRI primar...

Страница 14: ...olts at 50 milliamperes The QPC720 PRI contains five LEDs and six external connectors Table 3 shows the transmission equalization SW2 switch settings and Table 4 shows SW3 options Table 5 lists the ex...

Страница 15: ...OFF except as shown under the column labeled Switch S2 settings The switch positions of the 8 pole SW3 location E37 are OFF for DTI mode For PRI mode set SW3 positions as configured in LD 17 Note 2 F...

Страница 16: ...An access point to the regenerated DS 1 signal from the external network An access point to the DS 1 signal being transmitted by the DTI assembly XMT MON Buffered recovered clocks derived from the ex...

Страница 17: ...T1 transmission cable consult the Northern Telecom Transmission Division To manufacture cables of different lengths than the standard cables provided see Wire list on page 57 Table 6 lists the types o...

Страница 18: ...Table 7 Possible card locations by system System Shelf Module Slot ST STE CE DTI expansion 5 12 2 8 MS CE CE expansion 5 12 2 9 11 12 12 13 N NT RT Network LH Network RH DTI expansion RT only 5 12 2 1...

Страница 19: ...condary reference clock source QCAD130 NT8D79xx QPC720 J2 QPC471 CC 1 J2 Only when primary clock source For RT in Single Group mode only not for ST STE or MS QCAD130 NT8D79xx QPC720 J2 QPC471 CC 1 J1...

Страница 20: ...l Run via cabinet I O panel to cross connect terminal or Echo Canceller from shielded system QCAD133 NT8D83xx QPC720 QPC472 J4 J5 Patch panel Run via cabinet I O panel to cross connect terminal or Ech...

Страница 21: ...n show cabling arrangements for the QPC720 card The equivalent connections on the DTI card are as follows 8 If required install connecting blocks at MDF or wall mounted cross connect terminal 9 If req...

Страница 22: ...t Echo Canceller and at carrier interface for example Office Repeater NCTE equipment 6 Tag and disconnect cables from card Rearrange Clock Controller card cables if required 7 Remove DTI and Network c...

Страница 23: ...ller Note 4 QPC720 does not interface with NT8D04 Superloop Network Card QCAD130 to PRI or NT8D79xx QCAD130 to PRI or NT8D79xx to QPC720 PRI Secondary Reference QPC471 Clock Controller 0 J3 J1 J2 QCAD...

Страница 24: ...DTI CPI Installation and data administration Figure 4 Switch settings in DTI mode QPC720 PRI DTI SW2 7 pole SW3 8 pole QPC472 DTI SW1 8 pole use 1 7 553 1335 Note See tables on switch settings for PRI...

Страница 25: ...en no vacant positions are available to install DTI cards additional Network shelves can replace Peripheral Equipment shelves located on the rear of the Common Equipment Tape or Disk shelves If an add...

Страница 26: ...eller Note 4 QPC720 does not interface with NT8D04 Superloop Network Card QCAD130 to PRI or NT8D79xx QCAD130 to PRI or NT8D79xx to QPC720 PRI Secondary Reference QPC471 Clock Controller 0 J3 J1 J2 QCA...

Страница 27: ...eripheral Equipment shelves located on the rear of the Common Equipment Tape or Disk shelves Refer to Installing an additional Network shelf on the N NT on page 22 for details If an additional cabinet...

Страница 28: ...ABAM Cabinet I O Panel Cabinet I O Panel QCAD133 to PRI or NT8D79xx QCAD129 or NT9J93xx RS232 or NT8D89Ax T1 LD 1 Note 2 Central Office J2 REF2 QCAD124 or NT8D85xx DS 1 Cross Connect J5 Connector J5 i...

Страница 29: ...ear PE shelf if required 4 Install the additional Network shelf in the PE location See Step 3 5 Install a QUD15 cooling unit directly below the Network shelf and secure with four mounting screws 6 Ins...

Страница 30: ...e C11 Otherwise the procedure is identical 12 At the QCAD111 power wiring harness untie and then connect the C17 connectorized power connection cable to the right rear Network shelf connect the C19 co...

Страница 31: ...itional Network shelves can replace Peripheral Equipment shelves located on the rear of the Common Equipment Tape or Disk shelves If an additional cabinet is required to install more Network shelves u...

Страница 32: ...Cross Connect J5 Connector J5 is not used in the DTI application T1 interface to external digital carrier AAAA A A A AAAAAAA Echo Canceller RS232 Note 1 T1 AA AA AA AA AA AAAA A A A AAAAAA QPC471 Clo...

Страница 33: ...angements refer to Figure 11 Figure 11 DTI to Echo Canceller cabling J4 QPC720 PRI I O Filter Cross Connect Block Echo Canceller NCTE if reqd Network XTIP XRING GRD Shield RTIP RRING GRD Shield If equ...

Страница 34: ...he Echo Canceller pin assignments operating parameters and initialization procedures Table 9 DTI to Echo Canceller pin assignments Signal EIA RS232 C circuit designation DTI pin Echo Canceller pin Tra...

Страница 35: ...serting the card and connecting the cables Refer to Cable requirements on page 10 for general cabling information This step may also entail removing an old card The remaining sections of this chapter...

Страница 36: ...nd 16 below The first three tables display the settings for different vintages of the QPC471 Table 16 shows the settings for the QPC775 Table 12 Clock Controller shelves and slots System Shelf Slot s...

Страница 37: ...B C D E F and G System Switch Setting ST STE 21 21A 21E SW1 SW2 Jumper Plug J1 Jumper Plug J2 ON OFF TP8 9 TP11 TP12 MS SW1 SW2 Jumper Plug J1 Jumper Plug J2 ON ON TP9 TP10 TP12 TP13 N NT RT 51 61 SW1...

Страница 38: ...the J3 faceplate connectors 0 4 3 m 0 14 ft off off 4 6 6 1m 15 50 ft off on 6 4 10 1m 21 33 ft on off 10 4 15 2 m 34 50 ft on on If there is only one Clock Controller card in the system set to OFF If...

Страница 39: ...elf slot and switch setting information Remember not to use both the QPC471 and the QPC775 on a single system QPC471 vintage H cards cannot be mixed with cards of an earlier vintage Starting the Clock...

Страница 40: ...DIS CC x Disable system Clock Controller x DSCK loop Disable clock for specified loop DSYL loop Disable yellow alarm processing for loop ENCK loop Enable clock for specified loop ENL CC x Enable syste...

Страница 41: ...ounters are near the maintenance or out of service thresholds Excessive switching could generate threshold exceeded messages or cause the PRI to be automatically disabled Check the counters in LD 60 I...

Страница 42: ...ENL DIS switch to ENL enable 7 Set the error detection thresholds and clock synchronization control in LD 73 optional if replacing card required with a new installation 8 Enable the Clock Controller b...

Страница 43: ...intenance or out of service thresholds Excessive switching could generate threshold exceeded messages or cause the PRI to be automatically disabled Check the counters in LD 60 If necessary reset the c...

Страница 44: ...Enable the Clock Controller by entering ENL CC x in LD 60 9 Set the error detection thresholds and clock synchronization controls in LD 73 optional if replacing card required with new installation 10...

Страница 45: ...enance or out of service thresholds Excessive switching could generate threshold exceeded messages or cause the PRI to be automatically disabled Check the counters in LD 60 If necessary reset the coun...

Страница 46: ...ontrols in LD 73 optional with card replacement required with new installation 9 To track on a Primary or Secondary reference clock use LD 60 The command follows 10 Issue the status check command SSCK...

Страница 47: ...condary reference clock source With dual controllers cable QCAD125 NT8D75xx connects the Clock Controller cards to each other at J3 in single group mode NT8D74 Clock Controller to InterGroup cable Thi...

Страница 48: ...ration NT8D79 PRI DTI to Clock Controller cable This cable connects the PRI DTI card to the QPC471 Clock Controller card It is available in the following lengths NT8D79AB 0 6 m 2 ft NT8D79AC 1 2 m 4 f...

Страница 49: ...s familiar with the general principles of data administration on the Meridian 1 as described in X11 software management 553 3001 300 DTI has an impact on the following Service Change and Print program...

Страница 50: ...ise defaults to previous value PREF 0 159 Primary reference source for clock synchronization controller Use cr for free running mode SREF 0 159 Secondary reference source for clock synchronization con...

Страница 51: ...Note Automatic restoration is available only with Release 12 and later software See Digital Trunk Interface Computer to PBX Interface maintenance 553 2811 500 for a description SRIM 1 127 Improvement...

Страница 52: ...FDL The Yellow Alarm Pattern DG2 Digit 2 FDL Facility Data Link The default is FDL if the frame format is ESF otherwise the default is DG2 TRSH 0 15 Digital Trunk threshold telephone Enter the thresh...

Страница 53: ...and 71 R14 For all other machine types TKTP aaa Trunk route type COT FEX WAT DID TIE Central Office trunk route Foreign Exchange trunk route Wide Area Trunk route Direct Inward Dialing trunk route TI...

Страница 54: ...must be NO if response to DSEL was VOD SIGO aaa ESN signaling arrangement Prompted if the network signaling package is equipped voice channels are configured VOD and response to TKTP was TIE The allo...

Страница 55: ...hannel move to an unassigned channel on the same Network loop RTMB 0 127 1 254 Route number cannot be 31 member number ATDN xxxx Auto terminate DN at which the trunk is to automatically terminate If r...

Страница 56: ...OV PAIR NEW OUT Modify existing data Copy a telephone template to add 1 32 new telephones Exit LD 11 Move from one TN to another Move voice and data TNs Add new data to the system Remove data block TY...

Страница 57: ...th a direct connection set all maintenance thresholds to their least sensitive values Note 1 If CPI uses a carrier facility requiring an NCTE or Clock Controller follow the DTI instructions for NCTEs...

Страница 58: ...l Trunk loop options lll network loop number 0 159 dd number of data calls 0 24 ff frame format D2 D3 D4 or ESF The default for frame format ff is ESF if prompt MODE is set to PRI D3 if MODE is set to...

Страница 59: ...ted Self test procedures Follow the steps below to activate the initial test procedure 1 Log into the overlay area 2 Enter LD 60 3 Enter STAT L to receive a status of the DTI card for Loop L 4 Enter D...

Страница 60: ...TLP command set to 0 only one channel is tested The channel tested is randomly selected by software and it cannot be specified Automatic loop test procedures Activate automatic loop test procedures wi...

Страница 61: ...DTI link from the Meridian 1 to the far end The far end must be in loopback mode before this test can be performed The DTI channel or frame being tested must be disabled before performing the remote l...

Страница 62: ...l and the collocated DTIs 6 If the system response is not appropriate refer to Digital Trunk Interface Computer to PBX Interface maintenance 553 2811 500 to analyze the message 7 On the collocated Mer...

Страница 63: ...ission Division The following pages contain lists and descriptions applying to Digital Trunk Interface DTI cables external to the Meridian 1 cabinet QCAD129 NT9J93xx This cable is used to connect the...

Страница 64: ...mber 1994 Table 17 QCAD129 NT9J93xx wire list DTI signal From To Echo Canceller signal DCD P1 1 P2 20 DTR RXD P1 2 P2 2 TXD DTR P1 4 P2 8 DCD TXD P1 5 P2 3 RXD GND P1 10 P2 7 GND RTS P1 12 P2 4 CTS P1...

Страница 65: ...ble 18 contains the wire list for the QCAD133 NT8D97xx Standard length 50 ft 15 3 m Construction Individually foil shielded twisted pairs 24 AWG 0 511 mm stranded P1 Connector 15 pin female subminiatu...

Страница 66: ...r ribbon 28 AWG 0 321 mm stranded P1 Connector 15 pin male subminiature D with jack screws P2 Connector 15 pin male subminiature D with jack screws Table 19 QCAD128 NT8D83xx wire list From To Signal P...

Страница 67: ...uant to Part 15 of the FCC rules and the radio interference regulations of Industry Canada These limits are designed to provide reasonable protection against harmful interference when the equipment is...

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