736 NT8D15 E and M Trunkcard
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 TypeI and II signaling, 2-way dial repeating with:
— echo suppression for TypeI signaling
— switchable 7 dB and 16 dB pads for carrier interface
— voice transmission and reception through two separate paths
— TypeI signaling through E and M leads
— TypeII signaling with near-end seizure by SB/M leads and far-end
detection by E/SG leads
•4-wire, DX signaling (see Figure 234 "4-wire DX signaling" (page 738))
•paging trunk operation (see Figure 235 "Paging trunk operation" (page
739)) 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
Copyright© 2003-2008, Nor tel Networks
.