Nortel Networks Circuit Card - Manual (Page 173)

NT1R20 Off-Premise Station Analog Line card Page 173 of 906
Circuit Card Description and Installation
Figure 23
OPS analog line card – typical cross connection example
553-AAA1117
NT8D37
IPE Module
Slot 0
NT1R20
Off-premise
Station
Line Card
Unit 0
Unit 7
0T
0R
26
1
27
2
System Cross-connect OPS or ONS
telephone
connections
A
MDF
Unit 1
Unit 2
Unit 3
Tip
Ring
Tip
Ring
28
3
29
4
2T
2R
1T
1R
30
5
31
6
Tip
Ring
NC
NC
NC
Module
I/O Panel
Connector
Part of
25-pair
cable
Note: Actual pin numbers may vary depending on the vintage of
the card cage and the slot where the card is installed.
(W-BL)
(BL-W)
(W-O)
(O-W)
(W-G)
(G-W)
(W-BR)
(BR-W)
(W-S)
(S-W)
(R-BL)
(BL-R)