TBRI-PT (ISDN Trunk-Side BRI Port)
Issue 1 May 2002
8-1561555-233-143
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.
h. Error Type (1537) — The board received a bad Cyclical Redundancy
Check (CRC) over the D channel. This error is reported on a per-port
basis. When the CRC errors exceed 5 within 15 minutes, the port is taken
out of service for 5 seconds. If 5 more CRC errors are received within 15
minutes of the first set of 5 errors, the port is taken out of service for 1
minute. If 5 more CRC errors are received within 15 minutes of the
previous 5, the port is taken out of service for 15 minutes.
This error is most likely due to a problem with backplane wiring, a noise
source, or no termination (an open circuit). It usually does not indicate a
problem with the circuit pack.
1. Check the backplane wiring.
2. If the problem persists escalate the problem.
i. Error Type (1538) — This error occurs when a frame with a bad CRC is
received by the BRI trunk board. This error only occurs on a system that
switches the packet implementation of the D channel over the TDM bus.
This error indicates an off-board problem related to the packet
implementation of the TDM D channel (R6.2 and later).
j. Error Type (1793) — The BRI Port Local TDM Loop Around test (#619)
failed. Run the long test sequence, and pay particular attention to the
results of the BRI TDM Port Loop test (#619).
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
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