Administration and Provisioning
8-12 Issue 8.0 July 2002
cross-connections in an OC-3c signal’s path, the signal must be
removed.
■ When deleting a DRI cross-connect for 1+1 protection pair, the
cross-connect should be deleted from the ‘A’ slot. If done from the ‘B’ slot,
the command will be denied.
OC-12/OC-12c Rules 8
■ The STS-1 signals within an OC-12 signal are addressed using port AIDs
(i.e., Quad 1 = 1a-1, 1a-2, 1a-3, 1b-1, 1b-2,........2b-3).
■ The OC-3 rules apply to the OC-12 on a per-slot basis. For example, all
STS-1 drop cross-connections must come from the same side per slot but
can come from different sides across the four slots. The following is
permissible (1e-1-1 -> 1a-1, 1w-3-3 -> 1b-1).
■ An OC-3c signal can ride within an OC-12 signal as long as it is aligned on
an STS-3 boundary. The following example should clarify this rule.
■ An OC-12c signal must be aligned on an STS-12 boundary within the
OC-48 signal. For example, STS-3 tributaries 1-4, 5-8, 9-12, 13-16 each
form STS-12 boundaries. An OC-12 low-speed quad group (i.e., slots
1A-2B) can be cross-connected within any STS-12 boundary.
■ The twelve constituent STS-1 tributaries of an OC-12c signal must be
cross-connected in parallel. An example for the STS-3 tributaries is as
follows:
■ An OC-12c signal can be provisioned using twelve (12)
CONFIGURATION-Enter-Crossconnect-STS-1 commands or four (4)
CONFIGURATION-Enter-Crossconnect-STS-3 commands. There are
no STS-12 rate cross-connect commands.
Correct Incorrect
1b-1 -> 1w-3-1 1a-2 -> 1w-3-1
1b-2 -> 1w-3-2 1a-3 -> 1w-3-2
1b-3 -> 1w-3-3 1b-1 -> 1w-3-3
1a-1 -> 1w-5-1 2a-1 -> 1w-7-1
1a-2 -> 1w-5-2 2a-2 -> 1w-7-2
1a-3 -> 1w-5-3 2a-3 -> 1w-7-3
1b-1 -> 1w-6-1 2b-1 -> 1w-8-1
1b-2 -> 1w-6-2 2b-2 -> 1w-8-2
1b-3 -> 1w-6-3 2b-3 -> 1w-8-3
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