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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 13 Card Reference
XTC Cards (XTC-28-3/XTC-14)
Figure 13-4 Cross-connect matrix
The XTC card supports a total of 672 cross-connects with a payload granularity of VT 1.5. The VT
functionality supports ring configurations with a mix of VT-capable Cisco transport network elements
(NEs) and STS-only capable Cisco transport NEs.
The XTC card provides protection switching control for external and internal VT paths. The card also
performs path- and STS-level monitoring and protection switching.
13.3.2 VT Mapping
The Cisco ONS 15327 performs VT mapping according to Telcordia GR-253 standards.
shows the VT numbering scheme for the ONS 15327 as it relates to the Telcordia standard.
STS
ASIC1
STS
ASIC2
0
1
2
3
4
5
0
1
2
3
4
5
6
Ports
Ports
4X
STS-12/48
8X
STS-12
8X
STS-12
4X
STS-12/48
Cross-connect matrix at STS level = 288x288 STS-1
VT
ASIC
STS
ASIC1
STS
ASIC2
0
1
2
3
4
5
0
1
2
3
4
5
6
Ports
Ports
Cross-connect matrix at VT level = 336x336 bidirectional VT 1.5 bandwidth manager
50829
VT
ASIC
= Possible
paths of VT
level signal
Table 13-1 ONS 15327 VT mapping
ONS 15327 VT Number
Telcordia Group/VT Number
VT1
Group1/VT1
VT2
Group2/VT1
VT3
Group3/VT1
VT4
Group4/VT1
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...