Computer Hardware Installation Guide

Connector pin assignments 781

The E and M Trunk card brings the four analog trunks to the backplane

through a 160-pin connector shroud. External equipment connects to the

card at the back of the Media Gateway and Media Gateway Expansion

using a 25-pin connector. Telephone trunks connect to the E and M Trunk

card at the MDF using a wiring plan similar to that used for line cards.

A typical connection example is shown in Figure 253 "E and M Trunk card -

typical cross connection example" (page 782). A list of the connections to

the E and M Trunk card in the various 2-wire modes is shown in Table 299

"E and M Trunk card - backplane pinouts for 2-wire modes" (page 780).A

list of the connections to the E and M Trunk card in the various 4-wire modes

is shown in Table 300 "E and M Trunk card - backplane pinouts for 4-wire

modes" (page 780). See Communication Server 1000M and Meridian 1

Large System Installation and Conﬁguration (NN43021-310) for complete

I/O connector information and wire assignments for each tip/ring pair.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 01.04 Standard

Release 5.0 23 May 2008