Vt Mapping; Figure 2-8 Xc-Vxc-10G Cross-Connect Matrix; Table 2-18 Vt Mapping - Cisco ONS 15454 Reference Manual

Chapter 2 Common Control Cards
Figure 2-8
STS-48
STS-192

2.6.2 VT Mapping

The VT structure is designed to transport and switch payloads below the DS-3 rate. The ONS 15454
performs VT mapping according to Telcordia GR-253-CORE standards.
numbering scheme for the ONS 15454 as it relates to the Telcordia standard.
Table 2-18
ONS 15454 VT Number
VT1
VT2
VT3
VT4
VT5
VT6
VT7
VT8
VT9
VT10
VT11
VT12
VT13
OL-9217-01
XC-VXC-10G Cross-Connect Matrix
XC-XVC-10G STS-1 Cross-connect ASIC (1152x1152 STS-1)
Input Ports
1
8X 2
.
.
.
4X
.
20
6X STS-48
2X STS-48 (VT Ports)
TUXC
2X STS-48 (VT Ports)
VTXC
VT Mapping
Output Ports
1
2
.
.
.
.
20
TU-3 Cross-connect ASIC
(bypassed in SONETmode)
VT 1.5/VT 2 Cross-connect ASIC
1344 bidirectional VT 1.5 cross-connects, or
1008 bidirectional VT 2 cross-connects, or
Mixed grooming (50% VT1.5 and 50% VT2)
Telcordia Group/VT Number
Group1/VT1
Group2/VT1
Group3/VT1
Group4/VT1
Group5/VT1
Group6/VT1
Group7/VT1
Group1/VT2
Group2/VT2
Group3/VT2
Group4/VT2
Group5/VT2
Group6/VT2
Cisco ONS 15454 Reference Manual, R7.0.1
2.6 2.6.2 VT Mapping
8X
STS-48
4X
STS-192
Table 2-16 shows the VT
2-25