Xcvt Functionality; Xcvt Faceplate And Block Diagram - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

2.4.1 XCVT Functionality

Figure 2-3
XCVT
FAIL
ACT/STBY
2.4.1 XCVT Functionality
The STS-1 switch matrix on the XCVT card consists of 288 bidirectional ports and adds a VT matrix
that can manage up to 336 bidirectional VT1.5 ports or the equivalent of a bidirectional STS-12. The
VT1.5-level signals can be cross connected, dropped, or rearranged. The TCC2/TCC2P card assigns
bandwidth to each slot on a per STS-1 or per VT1.5 basis. The switch matrices are fully crosspoint and
broadcast supporting.
The XCVT card provides:
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Cisco ONS 15454 Reference Manual, R8.5
2-16

XCVT Faceplate and Block Diagram

Input
ports
0
Ports
1
STS
ASIC1
2
3
4
5
6
7
8
9
10
11
288 STS bidirectional ports
144 STS bidirectional cross-connects
672 VT1.5 ports via 24 logical STS ports
336 VT1.5 bidirectional cross-connects
Nonblocking at the STS level
STS-1/3c/6c/12c/48c cross-connects
0 0 Ports
1 1
STS
ASIC2
2 2
3 3
4 4
5 5
6
VT
ASIC
Chapter 2 Common Control Cards
Output
ports
0
1
2
3
4
5
6
7
8
9
10
11
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