Nortel Networks Circuit Card 311 - Manual (Page 736)

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 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, Nortel Networks
.