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ATM-SGRP (ATM Signaling Group)
Issue 1 June 2005 601
h. Error Type 2305: The Remote Layer 3 Query test (#637) failed. A specific message was
sent to the far-end switch, and it did not respond within the allotted time.
1. Investigate elements of the ATM D channel(s) (ATM-DCH) for both this switch and the
far-end switch.
If Test #637 fails twice in a row, the B channels are alarmed and made unavailable for
outgoing calls (although incoming calls are still accepted). When Test #637 succeeds and
the far-end switch starts responding properly, the ATM trunk (B channels) are placed back
into normal operation and their alarms retired.
i. 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 duplex NFAS signaling, which is supported by
country protocol 1.
Thus, there may be a mismatch in administration between the local and far-end switches.
1. Consult with the customer’s network provider to determine whether the D channel is set
up correctly on the far-end switch.
j. Error Type 3840-3928: These error types are used to report certain error messages
received by the ATM-SGRP Signaling Group for one of its associated B channels. The Aux
Data field is the port number of the B channel from which 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. See
Table 197: Descriptions and repair recommendations (Error Types 3840-3928)
on
page 601 for more information.
Table 197: Descriptions and repair recommendations (Error Types 3840-3928)
Error
Code
Description Recommendation
3842 A request has been
made to use a transit
network or common
carrier that cannot be
accessed.
From the circuit pack and port number (in the Aux Data
field), determine the trunk group against which the error
was reported.
1. Check every routing pattern containing this trunk group
for validity of interexchange carriers requested (IXC
field).
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