Nortel Circuit Card Installation Manual page 665

Table 210
Insertion Loss from IPE Ports to IPE Ports (measured in dB)
500/2500
Line
IPE Ports
2/4 Wire
E&M Trunk
6
3
4 Wire
(ESN) E&M
Trunk
5.5
2.5
Paging trunk operation
Table 210 shows the insertion loss from IPE port to IPE port.
Digital
Line
3.5
-0.5
3
-1
When used in the paging mode, a trunk is connected to a customer-provided
paging amplifier system (not zone selectable). When the trunk is accessed by
dial-up or attendant-key operation, it provides a loop closure across control
leads PG and A. See Figure 156 on
transfers the input of the paging amplifier system to the transmission path of
the trunk.
NT8D15 E&M Trunk card
IPE Ports
2/4 Wire 4 Wire
E&M Trunk (ESN) E&M
Trunk
1
1
0.5 0
0.5 0
page 666. In a typical application, this
Circuit Card
Page 665 of 906
CO/FX
/WATS
Loop Tie
Trunk
Description and Installation