NT8D15 E&M Trunk card Page 653 of 894
Circuit Card Description and Installation

Table 205 shows the insertion loss from IPE port to IPE port.

Paging trunk operation

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 153 on page 654. In a typical application, this

transfers the input of the paging amplifier system to the transmission path of

the trunk.

Table 205
Insertion Loss from IPE Ports to IPE Ports (measured in dB)
IPE Ports
IPE Ports
500/2500
Line
Digital
Line
2/4 Wire
E&M Trunk
4 Wire
(ESN) E&M
Trunk
CO/FX
/WATS
Loop Tie
Trunk
2/4 Wire
E&M Trunk
6
3
3.5
-0.5
1
1
4 Wire
(ESN) E&M
Trunk
5.5
2.5
3
-1
0.5
0.5
0
0