Nortel Networks Circuit Card 311 - Manual (Page 717)

Introduction 717
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 267 "Trunk and signaling matrix" (page 717) lists the signaling and
trunk types supported by the E and M Trunk card.
Table 267
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
Type I signaling uses two signaling wires plus ground. Type II and DX
signaling uses two pairs of signaling wires. Most electronic switching
systems use Type II signaling.
Table 267 "Trunk and signaling matrix" (page 717) lists the signaling and
trunk types supported by the NT8D15 E and M Trunk card.
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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