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Communication Manager Maintenance-Object Repair Procedures
1432 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
does recover, the B channels will be negotiated back to the In-Service state and their
alarms will be retired.
When this error occurs, the state of the Signaling Group is changed to out of service (verify
using status signaling-group grp#).
d. Error Type 513: the secondary signaling channel connection has been lost for more than
90 seconds. If the primary signaling channel is not in service, B channels will be placed in
the ISDN Maintenance/Far-End state. The B channels will not be usable for outgoing calls,
although incoming calls will still be accepted. The switch will automatically attempt to
recover the signaling link. Pay particular attention to the results of Test #639 (Secondary
Signaling Link Hardware Check) in the test sequence. When the link does recover, the B
channels will be negotiated back to the In-Service state and their alarms will be retired.
When this error occurs, the state of the Signaling Group is changed to out of service (verify
using status signaling-group grp#).
e. Error Type 1793: This error indicates a failure of the Layer 2 Query Test for the primary
signaling channel.
f. Error Type 2049: This error indicates a failure of the Layer 2 Query Test for the secondary
signaling channel.
g. Error Type 2305: This error indicates a failure of the Remote Layer 3 Query test (#637). A
specific message was sent to the far-end switch, and it did not respond within the allotted
time. Investigate elements of the ISDN PRI D channel(s) (ISDN-LNK) for both this switch
and the far-end switch. If Test #637 fails twice in a row, the B channels will be alarmed and
made unavailable for outgoing calls (although incoming calls will still be accepted). When
Test #637 succeeds and the far-end switch starts responding properly, the DS1 ISDN Trunk
(B channels) will be placed back into normal operation, and their alarms will be retired.
h. Error Type 3585: A SERV or SERV ACK ISDN D-channel message has been received by a
non-US-type interface (country option other than 1 on the DS1 Administration screen).
However, these messages are used only for NFAS D-channel backup signaling that is
supported only by country protocol 1.
Thus, there may be a mismatch in administration between the local and far-end switches.
Consult with the customer’s network provider to determine whether the D channel is set up
correctly at the far-end switch.
i. Error Types 3842 - 3942: These Error Types are used to report certain error messages
received by the ISDN-PRI Signaling Group for one of its associated B channels. The aux
data field shows for which B channel (port number) the message was received.
The error code generated equals 3840+x, where “x” is a cause value defined by the
ISDN-PRI Specification. Note that there is no Test to Clear Value for these Error Types;
selected ISDN cause values are placed in the log when they are received, but no direct
action or alarming is performed solely in response to receiving them. They provide added
data that may prove useful when tracking down obscure networking and routing problems.
Table 515
provides more information: