Administration and Provisioning
Issue 8.0 July 2002
8-13
NOTE:
The FT-2000 OC-48 ADR Terminal does support the pre-provisioning
of cross-connections. However, in order to prevent the generation of
LOP alarms, the OC-12c signal should not be applied until: (a) the
circuit pack has been installed; (b) ALL cross-connections for that
circuit pack have been provisioned; and (c) all cross-connections in
each NE of the signal’s path have been provisioned. Then, and only
then, should the signal be applied. Before deleting any of the
cross-connections in an OC-12c signal’s path, the signal must be
removed.
■ An OC-12c signal cannot be "rolled" without a service hit due to the lack of
a CONFIGURATION-Enter-Roll-STS12 command.
■ When deleting a DRI cross-connect for 1+1 protection pair, the
cross-connect should be deleted from the ‘A’ quad (1B, 5B). If done from
the ‘B’ quad (3B, 7B), the command will be denied.
STS-3 Cross-Connections 8
General 8
The FT-2000 OC-48 Add/Drop-Rings Terminal has no fixed connection, or
association, between low-speed interface slots and the 155 Mb/s (STS-3)
tributaries of OC-48 high-speed lines 1E and 1W. There is also no fixed
connection between the STS-3 tributaries of OC-48 high-speed lines 1E and 1W.
(In 2-fiber bidirectional rings, STS-3 tributaries 1 through 8 are service tributaries
and STS-3 tributaries 9 through 16 are protection tributaries.) The FT-2000 OC-48
Add/Drop-Rings Terminal has an STS-3 time slot assignment (TSA) capability that
supports the following cross-connections:
■ 1-way cross-connections (available in Release 4.1 and later releases)
■ 2-way cross-connections (Default) (available in Release 3 and later
releases)
■ 1-way-DRI cross-connections (available in Release 4.1 and later releases)
■ Limited STS-1 cross connections (available in Releases 5 and 6 only).
When entering cross-connections, the source node is the node in the ring where
the low-speed signals on that STS-3 tributary originate. The destination node is
the last node in the same ring where the low-speed signals on that STS-3 tributary
terminate.
NOTE:
Concatenated signals, such as an OC-3c, must be cross-connected within
a single STS-3 tributary and cannot be broken up as STS-1 signals
distributed across 3 different STS-3 tributaries. An OC-12c concatenated
signal must be cross-connected to four contiguous STS-3 tributaries.
Non-concatenated OC-3 and OC-12 signals can be freely cross-connected.
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