Nortel Networks 1000 - Manual (Page 654)

654 NT8D15 E and M Trunk card
Figure 216
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 218 "4-wire DX signaling" (page 656) )
• paging trunk operation (see Figure 219 "Paging trunk operation" (page
657) ) 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 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.