Administration and Provisioning
8-32 Issue 8.0 July 2002
The 1-way add, drop, and through cross-connections may be used to provide the
following:
■ Bridge cross-connections: A bridge cross-connection is two
cross-connections sharing the same source. The source can be any
incoming STS-1 tributary of OC-48 high-speed line 1E or 1W, or any
service low-speed port. For example, Figure 8-10 shows incoming service
STS-1 tributary 1 of STS-3 tributary 3 (3-1) on OC-48 high-speed line 1W
cross-connected to outgoing service STS-1 tributary 1 of STS-3 tributary 3
(3-1) on OC-48 high-speed line 1E. Incoming service STS-1 tributary 1 of
STS-3 tributary 3 (3-1) on OC-48 high-speed line 1W is also
cross-connected to service low-speed port 2 of slot 1A (1A-2).
Figure 8-10. STS-1 Bridge Cross-Connections at an FT-2000 OC-48
Add/Drop-Rings Terminal
Cross-connections can also be made to/from 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.
(Any low-speed port associated with the slot pair may be specified when
entering the cross-connection.)
1
3-1
16
FT-2000 OC-48 Add/Drop-Rings Terminal
STS-1 Tributaries
OC-48
1E
OC-48
1W
1
3-1
16
Through
Drop
1A-2 8B-3
Low Speed Ports
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