Mike's PBX Cookbook

PRI programming
(Small System)

The following applies to EUROPEAN EURO-ISDN PRI's.
For Large Systems (options 51, 61, 81), see Dual PRI Installation.
If using a Universal Digital Trunk (UDT) card, see UDT E1 PRI Example.

Notes:

NTCK43ABNTBK50AA
NTBK43AB 2Mb PRI, with a
NTBK51AA Daughter Board
NTBK50AA 2Mb PRI, with a
NTBK51AA Daughter Board

1. LD 17 (Define the Loop)

REQ  CHG
TYPE CEQU
PRI2 (Select an available loop number)
MGC (enter Loop Shelf Card, LSC, number of the Media Gateway PRI Card location)

2. LD 17    (Build D Channel, must match parameters in the route)

REG CHG
TYPE ADAN
ADAN NEW DCH # Available D Channel Number
CTYP MSDL
MGC # # # Loop Shelf Card location of the D Channel Daughterboard on the PRI Card
PORT 1
USR PRI2
DCHL ## D Channel Loop number defined in the CEQU for the associated PRI Card
IFC EURO Normally EURO in Europe, but again it depends of the CO Switch interface and must match Route interface type
CNTY ETSI Normally this, but again, it depends on the CO Switch interface and must match Rout interface type
PINX_CUST 0
SIDE USR Slave to the controller. The CO is the controlling switch (NET)
OVLR YES Overlap Receiving Allowed.
DIDD Number leading of digits to be ignored for DID call during Overlap Receiving.
LD 96 ENL MON ALL followed by ENL MSGO (loop) and then ENL MSGI (loop) to observe the number of digits across the D Channel and count the number of digits to strip off to have only four digits showing for the PBX
OVLS YES Overlap Sending Allowed.

3. LD 16 (Define Route Data Block)

REQ NEW
TYPE RDB
CUST 0
ROUT ## New Route Number
TKTP DID
DTRK YES
DGTP PRI2
ISDN YES
MODE PRA ISDN Trunk Route (ISDN=yes)
IFC EURO    This the norm, but it depends on the protocol of the CO Switch interface
CNTY ETSI    This the norm, but it depends on the protocol of the CO Switch interface
DSEL VOD
AUTO NO Unless the trunks are to auto terminate to an Auto Attendant or attendant
ICOG IAO  In And Out call processing
SRCH RRB Round Robin or random selection of trunks
ACOD ## Access Code for the Route Dial Tone
TARG 1-9 leave out the level of the TGAR of the instrument to allow ACOD dialing to access the route
CDR YES yes for CDR tracking until YES is no longer accepted consecutively
INC YES
LAST YES
QREC YES
OAL YES
AIA YES
OAN YES
OPD YES
NDP EXC 0
MUS YES Yes if Music Route is available
MRT 34 Music Route Number

4. LD 14 (Define the Trunks)

REQ NEW 30 We can build all 30 at once
TYPE DID
TN ## ## Loop and Channel
CUST 0 Customer Number
TRK PRI2
PCML A Note: A= overseas/MU= eg: 61C to 61C
NCOS 0
ROUT # 1 Route and first member
CLS DTN Don't forget tone dialing

5. LD 73 (System Timers and Loop Timers)

CHG PRI2
TYPE LPTI
LOOP Loop number of PRI card location or CEQU PRI2 defined loop
MFF AFF Normal, but if PRI Card is green with no activity, change to CRC or ask CO if CRC is being used
CHG PRI2
FEAT SYTI System Timers
MGCLK Loop, Shelf, Card location of Clock Controller DB. Must be defined for each Clock Controller in shelf

6. LD 96 (MSDL and D Channel activation)

ENL MSDL # # # FDL Enable MSDL Loop Shelf Card) Force Down Load
STAT MSDL # # # Status of MSDL Loop Shelf Card
ENL DCH # Enables D Channel for PRI Card associated with active MSDL Card

7. LD 60    (Enable PRI Loop)

ENLL #  Enables the Loop of the PRI/DTI Card
ENL CC # # Enables Clock Controller in Loop, Shelf of MGC
STAT # Status of PRI/DTI loop, channels should be IDLE


Line Interface Pinout

The circuit is presented on pairs 23/48 (TX) and 24/49 (RX) of the card slots Amphenol (RJ-21).

A DSU/CSU cable (eg, NTBK04) is constructed as follows, although it may be necessary to cross TX and RX pairs:

MDFRJ48CDB-15SignalDescription
2349RTransmit ring to network
4851TTransmit tip to network
25n/c2FGNDFrame ground
24111R1Receive ring from network
4923T1Receive tip from network

* DSU/CSU = Data Service Unit/Channel Service Unit, eg, the PTT modem.

See Connecting E1 / T1's for cabling details.


Loopback Adaptor Pinouts

Loop pairs 23 to 24 on the MDF, and the circuit should enable and go green.

DB15F - Short pin 1 to pin 3 and pin 9 to pin 11

RJ48C, 8-conductor Modular - Short pin 1 to pin 4 and pin 2 to pin 5

Note: An RJ-45 connector will fit an RJ-48 jack, but the key on an
RJ-48 connector will prevent it from plugging into an RJ-45 jack.

The D channel will not establish on a loop test.

 RJ-48 Loopback

Diagnostics

TO DISABLE LOOP:
LD 96
DIS DCH #
LD 60
DISL #
TO RE-ENABLE LOOP: LD 96
ENL DCH #
LD 60
ENLL #
TO REMOVE PRI CARD:

If the PRI card is removed
without following these steps,
it will cause the PBX to INI

DISABLE:
LD 96
DIS MSDL # # #
DIS DCH #  (to make sure D Channel is disabled)
LD 60
DISL #     (PRI card is safe to remove)

RE-ENABLE: (card re-inserted)
LD 96
ENL MSDL # # # FDL
ENL DCH #
LD 60
ENLL #
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