ADTRAN MX2800 STS-1 - Table 3-1. VT1.5 Mode Cross-Connect Mapping; VT1.5 Mode

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Section 3, Configuration MX2800 STS-1 User Manual
VT Interface
VT1.5 Mode
When the MX2800 STS-1 system is provisioned for VT1.5 (T1) mode, each of the seven VT groups is
configured to carry four VT1.5s (1.728 Mbps each), for a total of 28 VT1.5s. Any VT1.5 may be mapped
to any of the 28 physical DS1 ports not already mapped. The diagram below illustrates how the VT1.5s are
associated with the physical DS1 ports for VT1.5 mapping both by VT group and sequentially.
Table 3-1 illustrates VT1.5 (T1) Mode.
Table 3-1. VT1.5 Mode Cross-Connect Mapping
Physical Port
Sequential-mapping
(TR-253)
Physical Port
Group-mapping
(M13)
VT 1.5 # VTG-VT
1111-1VTG #1
8281-2
15 3 15 1-3
22 4 22 1-4
2522-1VTG #2
9692-2
16 7 16 2-3
23 8 23 2-4
3933-1VTG #3
10 10 10 3-2
17 11 17 3-3
24 12 24 3-4
41344-1VTG #4
11 14 11 4-2
18 15 18 4-3
25 16 25 4-4
51755-1VTG #5
12 18 12 5-2
19 19 19 5-3
26 20 26 5-4
62166-1VTG #6
13 22 13 6-2
20 23 20 6-3
27 24 27 6-4
72577-1VTG #7
14 26 14 7-2
21 27 21 7-3
28 28 28 7-4