Nortel Networks Circuit Card 311 - Manual (Page 722)

722 NT8D15 E and M Trunk card
The E and M Trunk card connects to the backplane through a 160-pin
connector shroud. External equipment connects to the card at the back
of the Media Gateway using a 25-pin connector. 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.
Figure 223 "E and M Trunk card - faceplate" (page 721) illustrates the
faceplate of 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 two to five 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, then the LED goes out. If the LED continues to flash or remains
weakly lit, replace the card.
In Option 11C systems the NT8D15 E and M Trunk Card is installed in
slots 1 through 10 of the Main cabinet, or in slots 11 through 50 of the
Expansion cabinets.
Each card provides four circuits. Each circuit connects with the switching
system and with the external apparatus by an 80-pin connector at the rear
of the pack.
Each trunk circuit on the card connects to trunk facilities by tip an ring leads
which carry voice, ringing, tone signaling and battery. Trunk option selection
is determined by software control in LD 14.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
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