Nortel Networks 1000 - Manual (Page 649)

Functional description 649
— Near-end seizure and outpulsing with M lead
— Ground detection with E lead
— Voice transmission through Tip and Ring for transmit and receive
•
Four-wire E and M signaling type I and II, two-way dial repeating (ESN
and Non-ESN)
— echo suppression for type I
— Switchable seven dB and 16 dB for carrier interface for ESN
applications
— Transmit and receive of voice through two separate paths
•
Type I signaling through E and M leads
— Type II signaling
– Near-end seizure with MA/MB leads
– Far-end detection with EA/EB leads
• Paging trunk loop OAID operation
— Support access by low resistance path at the PA/PB lead.
— All call zone paging is not supported.
•
Two to four-wire conversion of the transmission path
Trunk unit functions
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:
• 2-wire, E and M Type I signaling (see Figure 212 "E and M Type I
signaling" (page 650) ) with:
— 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 (see Figure 213 "E and M Type
II signaling" (page 650) ), 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 lead
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.