Applications
Issue 8.0 July 2002
2-33
Extra traffic is established by cross-connecting low-speed service slots to
protection STS-3 tributaries, using the CIT (locally or remotely). For the FT-2000
ADR Releases 1 through 7, “Extra traffic” can only be established on a
preemptible basis.
Preemptible means that a signal fail or signal degrade condition on the service
STS-3 tributaries causes traffic to be automatically switched to the protection
STS-3 tributaries, preempting extra traffic.
For the FT-2000 ADR Terminal Release 7.1.0 and later software, “Extra traffic”
can be administered as either preemptible or non-preemptible. Non-preemptible
means the “Extra traffic” carried on a protection slot cannot be
preempted/dropped by a failure of one of the service slots. For more information
about cross-connections and extra traffic, refer to Volume I, Section 8,
“Administration and Provisioning.”
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