Nortel Networks 1000 User Manual

Page 634

634

NT8D15 E and M Trunk card

•

2-wire E and M Type I signaling trunks

•

two-wire dial repeating trunks

•

two or four wire tie 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 240 "Trunk and signaling matrix" (page 634)

lists the signaling and

trunk types supported by the NT8D15 E and M Trunk card.

Table 240
Trunk and signaling matrix

Trunk types

Signaling

RLM/RLR

TIE

PAG

CSA/CAA/CAM

2-wire E and M

Yes

4-wire E and M

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:

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

02.06

Standard

27 August 2008