Circuit Emulation VLL (Cpipe) Services
Page 158 7705 SAR OS Services Guide
Error Situations
The CE-bound interworking function (IWF) uses the sequence numbers in the control word
to detect lost and incorrectly ordered packets. Incorrectly ordered packets that cannot be
reordered are discarded.
For unstructured CES, the payload of received packets with the L bit set is replaced with an
all-ones pattern. For structured CES, the payload of received packets with the L bit set is
replaced with an all-ones or a user-configurable bit pattern. This is configured using the
idle-payload-fill command. For structured CES with CAS, the signaling bits are
replaced with an all-ones or a user-configurable bit pattern. This is configured using the
idle-signal-fill command. Refer to the 7705 SAR OS Interface Configuration
Guide for more information.
All circuit emulation services can have a status of up, loss of packets (LOP) or admin down,
and any jitter buffer overruns or underruns are logged.
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