Nortel Networks 1000 User Manual

Page 638

638

NT8D15 E and M Trunk card

maintenance programs. The card faceplate Light-Emitting Diode (LED) is
lit while the self test is performed. If the self test passes, the faceplate LED
flashes three times and stays lit until the card is enabled in software. If the
test fails, the LED stays lit (does not flash).

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 207 "E and M Trunk card - faceplate" (page 639)

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

02.06

Standard

27 August 2008