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2-20 Introduction to equipment and cabling configurations
ABM circuit pack locations
Figure 2-12 shows typical locations of the common-equipment circuit packs
and the I/O card circuit packs installed in the ABM shelf at each RFT using the
latest software release for VTBM functionality. Circuit pack locations are
variable. Reference your job specifications for circuit pack locations for your
installation.
Figure 2-12
Typical ABM circuit pack locations
30
Mappers
DS1
DS1
DS1 P 3
DS1
DS1 In
DS1 Out
DS1 PB
P
Note: In DS1-fed applications, NT4K75 timing and cross-connect (TXC) cards
are used instead of optical interface units. NT7E02 OC-12 optical interface units
can be used in non-VTBM OC-12 applications.
AccessNode P0904244 Issue 1.0
32
34
36
38
1
2
3
4
5
6
7
8
I/O cards
1
DS1 In
30
DS1 Out 32
2
DS1 In
31
Ds1 Out 33
DS1 PB 34
DS1 PB 36
4
DS1 In
35
DS1 Out 37
DS1 input card (NT4K32AA)
DS1 output card (NT4K33AA)
DS1 protection bridge card (NT4K31AA)
protection
40
42
44
46
48
9
10 11 12 13 14 15 16 17 18 19 20 21
50
52
54
55
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