Nortel Circuit Card Installation Manual page 638

Page 638 of 906
Figure 147
Paging trunk operation
System
NT8D37
IPE Module
NT8D15
Slot 0
E&M
Trunk Card
0T
0R
Unit 0
0A
0PG
Unit 1
Unit 3
553-3001-211 Standard 3.00
NT8D15 E&M Trunk card
Cross
connect
Module
I/O Panel
Connector
A
(W-BL)
26
Audio
(BL-W)
pair
1
(W-O)
27
Signal
(O-W)
pair
2
Part of
25-pair
cable
August 2005
K1
Bat
MDF
K1
K1
Typical customer-
provided external
equipment
Tape
Micro-
recorder,
phone
radio, etc.
K2 K3
K2 K3
Amplifier Speaker
K2
Bat
Bat
K3
Microphone
contacts
553-AAA1152