Owner's manual

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Introduction 635

— Type I or Type II signaling

—

Duplex (DX) signaling

•

Paging (PAG) trunks

Type I signaling utilizes two signaling wires plus ground. Type II and DX

signaling utilizes two pairs of signaling wires. Most electronic switching

systems use Type II signaling.

Table 241 "Trunk and signaling matrix" (page 635) lists the signaling and

trunk types supported by the E and M Trunk card.

Table 241

Trunk and signaling matrix

Trunk types

Signaling RLM/RLR

TIE

PAG CSA/CAA/CAM

2-wire E and M Yes Yes Yes Yes

4-wire E and M Yes Yes No Yes

Legend:

RLM Release Link Main

RLR Release Link Remote

CSA Common Control Switching Arrangement

CAA Common Control Switching Arrangement with Automatic Number Identification (ANI)

CAM Centralized Automatic Message Accounting (CAMA) trunk

The NT8D15 E and M Trunk card interfaces four analog telephone trunks

to the CS 1000. Each trunk interface connects to a trunk facility using tip

and ring leads that carry voice, ringing, and tone signaling, and to signaling

interfaces by E and M leads. Each unit can be configured independently

by software control in the Trunk Data Block program LD 14.

Up to four analog trunk cards are supported in each Media Gateway and

Media Gateway Expansion. The NT8D15 E and M Trunk Card can be

installed in slots 1, 2, 3, and 4 of the Media Gateway and slots 7, 8, 9, and

10 of the Media Gateway Expansion.

The NT8D15 E and M Trunk card supports the following types of trunks:

• 2-wire E and M Type I signaling trunks

• 4-wire E and M Trunks:

— Type I or Type II signaling

— duplex (DX) signaling

• paging (PAG) trunks

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008