Mike's PBX Cookbook

T-1 Installation Instructions

Introduction

Note, if using a Universal Digital Trunk (UDT) card, see UDT T1 DTI Example.

A 1.5MB DTI/PRI (TMDI or T-1) card in place with a clock controller to reference timing from is required. These items will generally be supplied before installation. The clock controller daughterboard is only supplied for systems that do not have a clocking source readily available. Note, the clock controller is only used as a reference for the T-1 card and WILL NOT be used as a primary or secondary source of reference for channel timing.

The following systems require the listed equipment prior to installation:

SystemPart #Description
11C
(includes CS1000)
NTRB21TMDI Card (PBX to Network)
NTAK20Clock Controller Daughterboard
NTBK04 (optional)DTI/PRI to Carrier Cable
51C, 61C, and 81C
(includes CS1000)
NT5D12Dual DTI/PRI Card
NT5D16Dual DTI/PRI to I/O Panel Cable
NTCG03DTI/PRI to Clock Controller Cable

Setup Preparation

In order to make this a successful implementation, make sure your plan of action includes consideration for the appropriate card slot used in your application, and the correct connections to the T-1 card (via BIX or cable connection). Ensure you have the appropriate packages required for the setup and note any and all programming under loads 14, 16, 32, 60, 73, and 96. These loads will be vital to programming the card as needed.

First, log into your system and STAT the proposed slot for the setup in LD 32 to make sure the slot is unequipped. Next, you will need to print out your digital data block (DDB) in LD 73 and note the clock controller and threshold settings prior to making any changes. Getting a printout of all programming detailing this T-1 installation is vital just in case you have to backtrack to double-check anything in particular.

Note, in building the T-1 in the system, always build the card necessary before cutting over the system for testing and modifying prior to going live.

Programming Steps

In the following tables, the 51C steps also apply to Options 61C, and 81C. Option 11 steps apply to the Option 11 only.

The first step Is to change or build your digital data block (this may exist, so print first to check).

LD 73 - Digital Data Block

PromptResponseDescription11C51C
REQNEW, CHG, PRT, OUTAction requestNEWNEW
TYPEDDBDigital data blockDDBDDB
TRSH0-99 00
RALM1-(3)-128 128128
BIPC0-(2)-12824-hour bit rate violation threshold00
LFAC0-(3)-12824-hour loss of frame alignment threshold00
BIPVxx yyBit rate violation maintenance (in hours) and out-of-service threshold (per hour)
xx = 1-(3)-4 (maint)
yy = 1-(2)-4 (OOS)
-CR--CR-
SRTKxx yySlip rate maintenance (in hours) and out-of-service threshold (per hour)
xx = 1-(5)-24 (maint)
yy = 1-(30)-3600 (OOS)
-CR--CR-
SRNTxx yyNon-tracking slip rate maintenance and out-of-service thresholds
xx = 1-(15)-1024 (maint)
yy = 1-(3)-1024 (OOS)
-CR--CR-
LFAL Loss of frame alignment limits: maintenance and out of service
xx = 1-(17)-10240 (maint)
yy = 1-(511)-10240 (OOS)
-CR--CR-
SRIM(1)-127Slip rate improvement time in minutes-CR--CR-
SRMM1-(2)-127Slip rate exceeded maintenance limit-CR--CR-

Build the digital loop in order to program the trunks on later.

LD 17 - Digital Loop

PromptResponseDescription11C51C
REQCHG, ENDChange data or terminate programCHGCHG
TYPECEQUCommon Equipment parametersCEQUCEQU
DLOPL N FFMTDigital trunk loop, and options.
L = loop number (0-159)
N = number of data channels (0-(24))
FFMT = desired framing format (D2, (D3), D4, or ESF)
0
24
ESF
0
24
ESF
MG_CARDL S CThe physical card slot (loop, shelf, card). Only prompted with Media Gateways. Use the DLOP 'virtual loop' number to build the trunks.
MODETRK, LNK, PRIDigital tunk loop modeTRKTRK
TMDI(YES), NOTMDI Card (Mode must be set to PRI or TRK). Option 11 only - Check slot first
xx = 1-(5)-24 (maint)
yy = 1-(30)-3600 (OOS)
YES 
LCMTAMI, B8SLine code method
B8s = B8ZS binary 8 zero code substitution (default for FFMT = ESF)
AMI = B7 zero substitution (default for FFMT = D2, D3, or D4)
B8SB8S
YALMDG2, FDLYellow alarm method
DG2 = Digit 2 (default for FFMT = D2, D3, or D4)
FDL = Facility Data Link (default for FFMT = ESF)
FDLFDL
TRSH0-99Digital Trunk threshold set defined in LD 7300
DTIC0, 4, 8,…156Starting network loops slot for DTI/PRI  

Next, is to make sure the daily routines are set to check the status of the clock by entering LD 60 in the daily routines if it is not there already.

LD 17 - Daily Routine

PromptResponseDescription11C51C
REQCHG, ENDChane data or terminate programCHGCHG
TYPEOVLYOverlay area optionsCEQUCEQU
DROLxx xx xx xxDaily routine overlays00

Add a clock reference for background timing in order to run the card. This will not require a clock number due to the fact that there will be no primary clocking source for the T-1 card. This is strictly set to “Free Run” to provide the timing necessary.

LD 73 - Clock Reference

PromptResponseDescription11C51C
REQCHG, ENDAction requestCHGCHG
TYPEDDBDigital data blockDDBDDB
PREF0 - 159Primary referece for clock *  
SREF0 - 159Secondary reference for clock *  
CLKN1 - 9Card number for clock daughterboard
(Option 11 before Rls 25)
  
CC0xx = card number of clock controller daughterboard, Cabinet 0 ***  
PREFCC0 1 - 9Card number of primary DTI/PRI clock reference for Cabinet 0 ***  
SREFCC0 1 - 9Card number of primary DTI/PRI clock reference for Cabinet 0 ***  
CC1 x = card number of clock controller daughterboard, Cabinet 1 ***  
PREFCC1 1 - 9Card number of primary DTI/PRI clock reference for Cabinet 1 ***  
SREFCC1 1 - 9Card number of primary DTI/PRI clock reference for Cabinet 1 ***  

This would be a good time to swing over to LD 43 and perform a data dump to back up any information that you have so far.

Add a route prior to building trunks in the system.

LD 16 - Route Data Block

PromptResponseDescription11C51C
REQNEW, CHG, LCHG, ENDAction requestNEWNEW
TYPERDB Route data blockRDBRDBRDB
CUST0 - 99Customer number00
ROUT0 - 511Route number##
DESxxx…xDesignator  
TKTPCOT, DID, FEX, TIE, WATTrunk route typeTIETIE
DTRKYes, (No)Digital trunk routeYESYES
DGTPDTI, DTI2, PRI, PRI2Digital trunk typeDTIDTI
DSELDTA, VCE, TDN, (VOD), 3VCE, 3DTAData only, voice only, transparent data network only, voice and data route (VOD adds a 1 for voice calls and a 2 for data calls to the dialed digits). Use 3VCE for voice and data/fax applications.VCEVCE
ICOGIAO, ICT, OGTIncoming and/or outgoing trunkIAOIAO
SRCHRRB, (LIN)Linear, round robin search for outgoing callsRRBRRB
ACODxxx…xTrunk route access codexxxx
TARGxxxxTrunk access restriction group  
CNTLYes, (No)Change controls or timersYESYES
NEDC(ORG), ETHNear end disconnect control
ORG = Originating end
ETH = Either end
ETHETH
FEDC(ORG), ETH, FEC, JNTFar end disconnect control
ORG = Originating end
ETH = Either end
FEC = Far end
JNT = Joint control
JNT disallows trunk to trunk connections
ETHETH
DLTNYes, (No)Provide dialtone to the far-endYESYES

 

LD 14 - Trunk Data Block

PromptResponseDescription11C51C
REQNEW x, CHG, LCHG, ENDAction request. Add multiple trunks by using the NEW x (replacing x with the number of trunks to build, eg: 24).NEWNEW
TYPECOT, DID, FEX, TIE, WATTrunk type
COT = Central Office trunk
DID = Direct Inward Dialing
FEX = Foreign Exchange
TIE = Tie trunk
WAT = WATS trunk
TIETIE
TNl s c u
l ch
Terminal number (loop, shelf, card, unit) - Large System.
Loop (DLOP) and channel (1 - 24) for digital trunks/Media Gateways.
xx xxxx xx
DESxxx…xDesignator  
RTMB0 - 511, 1 - 254Route member numberxx xxxx xx
INC(YES), NOIncrease channel number and decreasing member number. (Option 11 only)YES 
SIGLDX2, DX4, EAM, EM4, LDRDigital trunk type
DX2 = 2-wire duplex
DX4 = 4-wire duplex
EAM = 2-wire E&M
EM4 = 4-wire E&M
LDR = loop dial repeating
EM4EM4
EMTYTTY1, (TTY2)4-wire E&M type 1 or 2-CR--CR-
STRIDDL, IMM, OWK, WNKIncoming start arrangement
DDL = delayed dial
IMM = immediate dial
OWK = off hook fast flash
WNK = fast flash
WNKWNK
STRODDL, IMM, OWK, WNKOutgoing start arrangement
DDL = delayed dial
IMM = immediate dial
OWK = off hook fast flash
WNK = fast flash
WNKWNK
SUPNYES, (NO)Answer and disconnect supervisionYESYES
CLSxxxxClass-of-serviceDTNDTN

Making the Terminations

There is a manufacturer cable (NTBK04) fabricated for a direct connection to the Network system. If this cable is not available, you may have to make the termination directly on the MDF block associated with the card slot. If so, use the following pinouts:

Cable
Patching
Violet/GreenTransmit (TX)
- to network
TIP 0pin 48MDF/BIX
 Pair 23
Green/VioletRING 0pin 23
Violet/BrownReceive (RX)
- from network
TIP 1pin 49MDF/BIX
 Pair 24
Brown/VioletRING 1pin 24
Slate/VioletFrame GroundFGNDpin 25Not Used

See Connecting E1 / T1's for cabling details.

General Maintenance

Once the above is completed, go to LD 43 and perform a data dump. Next, start the indicated tasks in order to test and/or bring the circuit online:

Perform a data dump

>LD 43
.EDD
or
.EDD CLR   (Do this step if the system does not take EDD alone)

Identify the new trunk members built on the system

>LD 21
REQ:  LTM
CUST  0
ROUT  #    (or CR)

Print the Digital Data Block to check threshold and clocking

>LD 73
REQ    PRT
TYPE   DDB

>LD 60
.SSCK #   (For the Option 11, you should see a Free Run status for CC0)

Print the routes to follow up on programming

>LD 21
REQ:  PRT
TYPE: RDB
CUST   0
ROUT  xx   (Route number built for TMDI trunk access)

>LD 20
REQ:  PRT
TYPE: TIE
TN    loop channel   (loop or loop and channel)

Enable the TMDI card built in the system (Option 11 only)

>LD 96
.ENL TMDI x
.STAT TMDI x

Loop Status

>LD 60
.STAT
.DISL x   (Disable loop, may be required to bring card online prior to enabling)
.ENLL x   (Enable loop)
.STAT x   (Check loop status)
.RCNT x   (Reset alarm counters)

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