Avaya Nortel Communication Server 1000 Reference page 167

Connecting to the MDF
To make the connections at the MDF, follow this procedure:
1. Punch down the first eight pairs of a standard telco 25-pair female-connectorized
2. Plug the NT5D13AA Lineside T1 I/O cable into this 25-pair cross-connect tail at the
3. Turn over the T1 transmit and receive pairs, where required for hardwiring the
The backplane connector is arranged as an 80-row by 2-column array of pins.
Lineside T1 card - backplane pinouts
backplane connector and the 25-pair Amphenol connector from the I/O panel. Although the
connections from the I/O panel only use 14 of the available 50 pins, the remaining pins are
reserved and cannot be used for other signaling transmissions.
The information in
a reference and diagnostic aid at the backplane, because the cabling arrangement can vary
at the I/O panel. See Communication Server 1000M and Meridian 1 Large System Installation
and Configuration (NN43021-310) for cable pinout information for the I/O panel.
Table 76: Lineside T1 card - backplane pinouts
Backplane
Connector Pin
12A
12B
13A
13B
14A
14B
15A
15B
16A
16B
17A
17B
18A
Circuit Card Reference
cross-connect tail starting with the first tip and ring pair of the Lineside T1
motherboard card slot on the cross-connect side of the MDF terminals.
MDF, regardless of the card slot restrictions that exist from the vintage level of IPE
or CE module used. This connection can also be made at the MDF without using
the NT5D13 Lineside T1 I/O cable, by cross-connecting according to the pinouts in
Table 76: Lineside T1 card - backplane pinouts
Lineside T1 card to local CPE T1 terminal equipment.
Table 76: Lineside T1 card - backplane pinouts
I/O Panel Connector
Pin
1
26
2
27
3
28
4
29
5
30
6
31
7
on page 167.
on page 167 shows the I/O pin designations for the
T1 Tip, Receive Data
T1 Ring, Receive Data
T1 Tip, Transmit Data
T1 Ring, Transmit Data
Alarm out, Normally open
Alarm out, Common
Alarm out, Normally closed
No Connection
No Connection
Away from MMI terminal, Receive Data
Away from MMI terminal, Transmit Data
Towards MMI terminal, Transmit Data
Towards MMI terminal, Receive Data
Installation and configuration
Table 76:
on page 167 is provided as
Signal
July 2011 167