Nortel Networks Circuit Card 311 - Manual (Page 716)

716 NT8D15 E and M Trunk card
• 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 266 "Trunk and signaling matrix" (page 716) lists the signaling and
trunk types supported by the NT8D15 E and M Trunk card.
Table 266
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 is an Intelligent Peripheral Equipment
(IPE) device that can be installed in either the NT8D37 IPE Module or the
NT8D11 CE/PE Module. The E and M Trunk card interfaces four analog
telephone trunks to the Meridian 1 switch. 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 Administration
program LD 14.
The 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 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.