Nortel Networks Circuit Card 311 User Manual

Page 720

720

NT8D15 E and M Trunk card

The E and M Trunk card mounts in any IPE slot. The line interface and
common multiplexing circuitry is mounted on a 31.75 cm by 25.40 cm (12.5
in. by 10 in.) printed circuit board.

The E and M Trunk card connects to the IPE backplane through a 160-pin
connector shroud. The backplane is cabled to the I/O panel on the rear of
the module, which is then connected to the Main Distribution Frame (MDF)
by 25-pair cables. Telephone lines from station equipment cross connect to
the OPS analog line card at the MDF using a wiring plan similar to that used
for line cards. See Communication Server 1000M and Meridian 1 Large
System Installation and Configuration (NN43021-310) for termination and
cross connect information.

See

Figure 223 "E and M Trunk card - faceplate" (page 721)

for an illustration

of the faceplate on the E and M Trunk card. The words "Dict Trk" appear on
the faceplate label because earlier versions of this card provided dictation
trunk connections for third-party equipment.

The faceplate of the card is equipped with a red LED. When an E and M
Trunk card is installed, the LED remains lit for 2 to 5 seconds while the
self-test runs. If the self-test completes successfully, the LED flashes three
times and remains lit. When the card is configured and enabled in software,
the LED goes out. If the LED continues to flash or remains weakly lit,
replace the card.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

01.04

Standard

Release 5.0

23 May 2008