Avaya G250 Maintenance Manual page 173

(g) A SERV or SERV ACK ISDN D-channel message has been received by a non-US-type
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interface (country option other than 1 on the DS1 administration form). However, these
messages are used only for duplex NFAS signaling which 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 on the far-end switch.
(h) These Error Types are used to report certain error messages received by the ISDN-PRI
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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. The
following table provides more information:
Table 79: Descriptions and Recommendations for Error Types 3842-3942
Error Description
Code
3842 A request has been made
to use a transit network or
common carrier that
cannot be accessed.
3843 No route to destination.
Request received to route
call through a transit
network that is recognized
but not allowed to carry the
call or not able to serve the
destination.
ISDN-SGR (ISDN-PRI Signaling Group)
Recommendation
From the media module and port number (in the Aux
Data field), determine the trunk group against which
the error was reported.
Check all routing patterns containing this trunk group
for validity of interexchange carriers requested (IXC
field).
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