Nortel Networks Circuit Card Benutzerhandbuch
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NT8D15 E&M Trunk card
Figure 156
Paging trunk operation
Paging trunk operation
Typical customer-
provided external
equipment
Cross
connect
System
NT8D14
Universal
Trunk Card
Unit 0
Unit 1
Unit 7
NT8D37
IPE Module
MDF
0T
Slot 0
A
26
(w-bl)
0R
1
(bl-w)
0A
27
(w-o)
0PG
2
(o-w)
Module
I/O Panel
Connector
Part of
25-pair
cable
553-AAA11
Audio
pair
Signal
pair
K2
Bat
Bat
Amplifier Spea
Tape
recorder,
radio, etc.
Micro-
phone
phone
K3
Micropho
contact
K3
Bat
K3
K2
K2
K1
K1
K1