Nortel Networks 311 User Manual

736

NT8D15 E and M Trunk card

Figure 232
E and M Type I signaling

— near-end seizure and outpulsing with M lead

— ground detection with E lead

— voice transmission through tip and ring for transmit and receive

•

4-wire, E and M Type I and II signaling, 2-way dial repeating with:

— echo suppression for Type I signaling

— switchable 7 dB and 16 dB pads for carrier interface

— voice transmission and reception through two separate paths

— 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

) with support access by low-resistance path at the PG/A1 leads.

Note: Paging end-to-end signaling is not supported.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

01.04

Standard

Release 5.0

23 May 2008