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Maintenance Object Repair Procedures
555-233-123 10-1666 Issue 4 May 2002
Notes:
a. Loss of continuity of Layer 1 to the far-end. It is assumed that Layer 1
remains active, even when both B-Channels are idle.
This test determines whether Layer 1 is active or not. If Layer 1 is not
active, the test attempts to activate it. If Layer 1 cannot be activated, the
port is taken out of service, and the test fails.
b. The D-Channel failed at Layer 2. Expiration of this timer indicates that
attempts to bring the failed link back into service have not succeeded and
some recovery actions should be taken on the associated B-Channels.
Upon expiration, associated in-service B-channels are put in the
out-of-service/far end state.
c. Error Type (513): On-board hardware failure. The FIFO RAM buffers have
overflowed, indicating a hardware problem.
d. Error Type (514): Transmit FIFO Overflow - This error indicates that the
circuit pack is having problems transmitting data to the TDM D-Channel.
This error only occurs only a system that switches the packet
implementation of the D-channel over the TDM Bus. This error indicates an
on board problem related to the packet implementation of the D-Channel
(R6.2 and higher).
e. Error Type (769): The port is generating too many uplinks. The link is being
suspended.
f. Error Type (1025): An expired timer has created an unexpected event. The
timer could be any of the following:
g. Error Type (1281): This error occurs when the NPE Crosstalk Test (#617)
has failed. The test will be repeated every 15 minutes until it passes.
Follow normal trouble shooting procedures for NPE Crosstalk Test (#617).
If this does not fix the problem, follow normal escalation procedures.
Timer Event
T3031 ISDN T3031 timeout
T3032 ISDN T3032 timeout
T305 ISDN T305 timeout
T3081 ISDN T3081 timeout
T3082 ISDN T3082 timeout
TL3 Status Inquiry
T304 Setup ACK
T310 Call Proceeding Receive
T313 Connect SEND