Avaya 03-300430 Home Security System User Manual


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Communication Manager Maintenance-Object Repair Procedures
600 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
c. Error Type 18: the ATM circuit pack has been busied out (either busyout atm sig-grp
or busyout board location).
1. Release the ATM signaling group (release atm sig-grp) or the circuit pack
(release board location).
d. Error Type 257: the primary signaling channel connection has been lost for more than 90
seconds.
The associated B channels are placed in the ISDN Maintenance/Far-End state.
The B channels are not usable for outgoing calls, although incoming calls can be
accepted.
The switch automatically attempts to recover the signaling link.
1. Pay particular attention to the results of Test #636 (Primary Signaling Link Hardware
Check) in the test sequence.
When the link does recover, the B channels are negotiated back to the In-Service state
and their alarms are retired.
2. When this error occurs, the state of the Signaling Group is changed to out-of-service
(verify using the status sig-group command).
e. Error Type 769: signaling link hardware error.
Service-affecting failures of the hardware used to transport the D channel are reported to
the ATM CES Signaling Group MO. Maintenance logs this error, places the D channel into
the OOS state, and raises a board-level alarm. The D channel is returned to service, and
the alarm is retired once the hardware failure condition clears.
f. Error Type 1281: Degraded PVC alarms indicate that a particular Permanent Virtual Circuit,
or signaling group, has encountered sufficient errors to exceed firmware thresholds.
Operations can continue but at a lower level of reliability or performance. Firmware filters
these alarms so that only one is reported active at a given time. The following in-line error is
considered a Degraded PVC alarm:
Excessive AAL – The AAL layer is experiencing an excessive number of errors in trying
to reconstruct Service Data Units (SDUs). Possible causes:
- Problem with the ATM switch
- Noisy communication paths on opposite side of ATM switch
- Unhealthy sending node
- Congestion at the ATM switch
g. Error Type 1793: Layer 2 Query test for the primary signaling channel failed.
Excessive AAL – The AAL layer is experiencing an excessive number of errors in trying
to reconstruct Service Data Unit (SDUs). Possible causes:
- Problem with the ATM switch
- Noisy communication paths on opposite side of ATM switch
- Unhealthy sending node
- Congestion at the ATM switch