Nortel Networks Circuit Card - Manual (Page 665)

NT8D15 E&M Trunk card Page 665 of 906
Circuit Card Description and Installation
Table 210 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 156 on
page 666 . In a typical application, this
transfers the input of the paging amplifier system to the transmission path of
the trunk.
Table 210
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