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, with a clock controller in place to reference timing, is required. These items will generally be supplied before installation. A 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:
| System | Part # | Description |
|---|---|---|
| 11C (small systems) | NTRB21 | TMDI Card (PBX to Network) |
| NTAK20 | Clock Controller Daughterboard | |
| NTBK04 (optional) | DTI/PRI to Carrier Cable | |
| 51C, 61C, and 81C (large systems) | NT5D12 | Dual DTI/PRI Card |
| NT5D16 | Dual DTI/PRI to I/O Panel Cable | |
| NTCG03 | DTI/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
| Prompt | Response | Description |
|---|---|---|
| REQ | NEW, CHG, PRT, OUT | Action request |
| TYPE | DDB | Digital data block |
| TRSH | 0-15 | Threshold set. Enter this number in LD 17 when defining a DTI/PRI loop. X remove |
| RALM | 1-(3)-128 | 24-hour Remote (yellow) Alarm clear threshold: the number of "remote alarm clear" signals received in 24 hours. If the threshold is reached the DTI/PRI must be restored to service manually |
| BIPC | 0-(2)-128 | 24-hour bit rate violation threshold |
| LFAC | 0-(3)-128 | 24-hour loss of frame alignment threshold |
| BIPV | xx yy | Bit rate violation maintenance (in 24 hours) and out-of-service threshold (per hour) xx = 1-(3)-4 (maint) yy = 1-(2)-4 (OOS) |
| SRTK | xx yy | Slip rate maintenance (in 24 hours) and out-of-service threshold (per hour) xx = 1-(5)-24 (maint) yy = 1-(30)-3600 (OOS) |
| SRNT | xx yy | Non-tracking slip rate maintenance and out-of-service thresholds xx = 1-(15)-1024 (maint) yy = 1-(3)-1024 (OOS) |
| LFAL | Loss of frame alignment limits: maintenance and out of service xx = 1-(17)-10240 (maint) yy = 1-(511)-10240 (OOS) | |
| SRIM | (1)-127 | Slip rate improvement time in minutes |
| SRMM | 1-(2)-127 | Slip rate exceeded maintenance limit |
Build the digital loop in order to program the trunks on later.
➤ LD 17 - Digital Loop
| Prompt | Response | Description |
|---|---|---|
| REQ | CHG, END | Change data or terminate program |
| TYPE | CEQU | Common Equipment parameters |
| DLOP | L N FFMT | Digital 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) |
| MG_CARD | L S C | The physical card slot (loop, shelf, card). Only prompted with Media Gateways. Use the DLOP 'virtual loop' number to build the trunks. |
| MODE | TRK, LNK, PRI | Digital trunk loop mode of operation |
| TMDI | (YES), NO | TMDI 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) |
| LCMT | AMI, B8S | Line code method B8s = B8ZS binary 8 zero code substitution (default for FFMT = ESF) AMI = B7 zero substitution (default for FFMT = D2, D3, or D4) |
| YALM | DG2, FDL | Yellow alarm method DG2 = Digit 2 (default for FFMT = D2, D3, or D4) FDL = Facility Data Link (default for FFMT = ESF) |
| TRSH | 0-99 | Digital Trunk threshold set defined in LD 73 |
| DTIC | 0, 4, 8,...156 | Starting network loops slot for DTI/PRI |
Next, make sure the daily routines are set to check the clock status by adding LD 60 in the daily routines (if it is not there already).
➤ LD 17 - Daily Routine
| Prompt | Response | Description |
|---|---|---|
| REQ | CHG, END | Chane data or terminate program |
| TYPE | OVLY | Overlay area options |
| DROL | xx xx xx xx | Daily routine overlays |
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
| Prompt | Response | Description |
|---|---|---|
| REQ | CHG, END | Action request |
| TYPE | DDB | Digital data block |
| PREF | 0 - 159 | Primary referece for clock * |
| SREF | 0 - 159 | Secondary reference for clock * |
| CLKN | 1 - 9 | Card number for clock daughterboard (Option 11 before Rls 25) |
| CC0 | x | x = card number of clock controller daughterboard, Cabinet 0 *** |
| PREF | CC0 1 - 9 | Card number of primary DTI/PRI clock reference for Cabinet 0 *** |
| SREF | CC0 1 - 9 | Card number of primary DTI/PRI clock reference for Cabinet 0 *** |
| CC1 | x = card number of clock controller daughterboard, Cabinet 1 *** | |
| PREF | CC1 1 - 9 | Card number of primary DTI/PRI clock reference for Cabinet 1 *** |
| SREF | CC1 1 - 9 | Card 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
| Prompt | Response | Description |
|---|---|---|
| REQ | NEW, CHG, LCHG, END | Action request |
| TYPE | RDB | Route data block |
| CUST | 0 - 99 | Customer number |
| ROUT | 0 - 511 | Route number |
| DES | xxxx | Designator |
| TKTP | COT, DID, FEX, TIE, WAT | Trunk route type |
| DTRK | Yes, (No) | Digital trunk route |
| DGTP | DTI, DTI2, PRI, PRI2 | Digital trunk type |
| DSEL | DTA, VCE, TDN, (VOD), 3VCE, 3DTA | Data 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. |
| ICOG | IAO, ICT, OGT | Incoming and/or outgoing trunk |
| SRCH | RRB, (LIN) | Linear, round robin search for outgoing calls |
| ACOD | xxxx | Trunk route access code |
| TARG | xxxx | Trunk access restriction group |
| CNTL | Yes, (No) | Change controls or timers |
| NEDC | (ORG), ETH | Near end disconnect control ORG = Originating end ETH = Either end |
| FEDC | (ORG), ETH, FEC, JNT | Far end disconnect control, ORG = Originating end, ETH = Either end FEC = Far end, JNT = Joint control, JNT disallows trunk to trunk connections |
| DLTN | Yes, (No) | Provide dialtone to the far-end |
➤ LD 14 - Trunk Data Block
| Prompt | Response | Description |
|---|---|---|
| REQ | NEW x, CHG, LCHG, END | Action request. Add multiple trunks by using the NEW x (replacing x with the number of trunks to build, eg: 24). |
| TYPE | COT, DID, FEX, TIE, WAT | Trunk type COT = Central Office trunk DID = Direct Inward Dialing FEX = Foreign Exchange TIE = Tie trunk WAT = WATS trunk |
| TN | l s c u l ch | Terminal number (loop, shelf, card, unit) - Large System. Loop (DLOP) and channel (1 - 24) for digital trunks/Media Gateways. |
| DES | xxxx | Designator |
| RTMB | 0 - 511, 1 - 254 | Route member number |
| INC | (YES), NO | Increase channel number and decreasing member number. (Option 11 only) |
| SIGL | DX2, DX4, EAM, EM4, LDR | Digital trunk type DX2 = 2-wire duplex DX4 = 4-wire duplex EAM = 2-wire E&M EM4 = 4-wire E&M LDR = loop dial repeating |
| EMTY | TTY1, (TTY2) | 4-wire E&M type 1 or 2 |
| STRI | DDL, IMM, OWK, WNK | Incoming start arrangement DDL = delayed dial IMM = immediate dial OWK = off hook fast flash WNK = fast flash |
| STRO | DDL, IMM, OWK, WNK | Outgoing start arrangement DDL = delayed dial IMM = immediate dial OWK = off hook fast flash WNK = fast flash |
| SUPN | YES, (NO) | Answer and disconnect supervision |
| CLS | xxxx | Class-of-service |
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/Green |  | Transmit (TX) - to network | TIP 0 | pin 48 | MDF/BIX Pair 23 |
|---|---|---|---|---|---|---|
| Green/Violet | RING 0 | pin 23 | ||||
| Violet/Brown |  | Receive (RX) - from network | TIP 1 | pin 49 | MDF/BIX Pair 24 | |
| Brown/Violet | RING 1 | pin 24 | ||||
| Slate/Violet | Frame Ground | FGND | pin 25 | Not 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