Nortel Circuit Card 311 Reference page 735

Figure 231
Paging trunk operation
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•
The functions provided by each unit on the E and M Trunk card include
2-wire signaling, 4-wire signaling, and paging operation as follows:
•
Copyright © 2003-2008, Nortel Networks
.
— Type I signaling through E and M leads
— Type II signaling with near-end seizure by SB/M leads and far-end
detection by E/SG leads
4-wire, DX signaling (see
paging trunk operation (see
739)) with:
— support access by low-resistance path at the PG/A1 leads
— paging end-to-end signaling not supported
2-wire, E and M Type I signaling (see
signaling" (page 739)) with:
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Figure 234 "4-wire DX signaling" (page
Figure 235 "Paging trunk operation" (page
Figure 236 "E and M Type I
Functional description 735
738))