2-16

Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 2 Common Control Cards
2.4.1 XCVT Functionality

Figure 2-3 XCVT Faceplate and Block Diagram

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 T CC2/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:

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

Input
ports
Output
ports
STS
ASIC1
STS
ASIC2
0
1
2
3
4
5
0
1
2
3
4
5
6
0
1
2
3
4
5
6
7
8
9
10
11
0
1
2
3
4
5
6
7
8
9
10
11
Ports Ports
61341
VT
ASIC
XCVT
FAIL
33678 12931
ACT/STBY