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Left even
4-10 ABM bay connections
Figure 4-4
ABM shelf layout
DS1 and DS3 input/out (I/O) card section
30
32
34
36
38
40
Common equipment card section
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22
Feeder
Tributary slots 1-8
Side
DS1/VT mappers
slots 9
inter-
DS3 mappers
and 10
conn.
(Note)
OC-3 tributary cards
left
Note: In DS1-fed access (DFA) applications, the NT4K75 timing and cross-connect
(TXC) card is used in slots 9 and/or 10. Optic applications use an OC-3 or OC-12 optic
feeder card in these slot positions.
AccessNode P0887749 Issue 1.0
42
44
46
48
50
52
54 55
Control and Maintenance
common equipment
Input/Out (I/O)
card section
Side
inter-
conn.
right
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