Lucent Technologies FT-2000 OC-48 - Page 419

Administration and Provisioning
Issue 8.0 July 2002
8-15
STS-3 tributary 6 of OC-48 high-speed line 1W. The add cross-connection
from slot 2A to outgoing service STS-3 tributary 6 is active, and the add
cross-connection from slot 2B to the same STS-3 tributary is standby.
Figure 8-2. STS-3 1-Way Cross-Connections at an FT-2000 OC-48
Add/Drop-Rings Terminal (1+1 Protected Slots)
■ Drop cross-connections: Drop cross-connections are made from any
incoming STS-3 tributary of OC-48 high-speed line 1E or 1W to any service
low-speed interface slot. For example, Figure 8-1shows incoming service
STS-3 tributary 5 of OC-48 high-speed line 1W cross-connected to service
low-speed interface slot 4B.
In Release 5 and later releases, drop cross-connections are made to any
service low-speed interface slot and the companion low-speed interface
slot (for example, 2A and 2B) when the slot pair is provisioned for the OC-3
1+1 protected mode. A single input enters an active drop cross-connection
from any incoming STS-3 tributary of OC-48 high-speed line 1E or 1W to
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FT-2000 OC-48 Add/Drop-Rings Terminal
STS-3 Tributaries
1A 2B 8B
OC-48
1E
Low Speed Interface Slots
OC-48
1W
6B
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Add
Drop
2A 6A