[cisco-voip] H323 to MGCP Call Timeout Auto Retry Xmedius

[JASON BURWELL]

I am having a strange issue with a gateway and/or my Xmedius faxserver
which is H.323 to Callmanager 6.1 and outbound to 2821 MGCP Gateways.
The problem only occurs when the called party does not answer after 27
seconds. Another call to the same destination is automatically issued
immediately after the first call times out. The second call fails for
the same reason after 27 seconds with the same Disconnect description.
When the first and second call disconnect, the q931 debug says "Resource
Unavailable,Unspecified". After the second call is disconnected I get a
error code from Xmedius with the same disconnect reason.
 
I can call out to the same party from an IP phone through the same
gateway and the call continues to ring until the called party answers
(at least up to a minute-I hung up after that) Seems like an H323
signaling problem.
 
Anyone know what setting could be causing this? I have pasted the q931
debug below.
 
 
355789: Sep 15 22:01:45.921 EDT: ISDN Se0/0/1:23 Q931: TX -> SETUP pd =
8  callref = 0x2B2B 
        Bearer Capability i = 0x8090A2 
                Standard = CCITT 
                Transfer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
        Channel ID i = 0xA98397 
                Exclusive, Channel 23 
        Calling Party Number i = 0x2183, N/A 
                Plan:ISDN, Type:National 
        Called Party Number i = 0xA1, '18035475200' 
                Plan:ISDN, Type:National
355790: Sep 15 22:01:46.289 EDT: ISDN Se0/0/1:23 Q931: RX <- CALL_PROC
pd = 8  callref = 0xAB2B 
        Channel ID i = 0xA98397 
                Exclusive, Channel 23
355791: Sep 15 22:01:48.173 EDT: ISDN Se0/0/1:23 Q931: RX <- ALERTING pd
= 8  callref = 0xAB2B 
        Progress Ind i = 0x8288 - In-band info or appropriate now
available 
355792: Sep 15 22:02:13.205 EDT: ISDN Se0/0/1:23 Q931: TX -> DISCONNECT
pd = 8  callref = 0x2B2B 
        Cause i = 0x80AF - Resource unavailable, unspecified
355793: Sep 15 22:02:13.237 EDT: ISDN Se0/0/1:23 Q931: RX <- RELEASE pd
= 8  callref = 0xAB2B
355794: Sep 15 22:02:13.273 EDT: ISDN Se0/0/0:23 Q931: TX -> SETUP pd =
8  callref = 0x2B26 
        Bearer Capability i = 0x8090A2 
                Standard = CCITT 
                Transfer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
        Channel ID i = 0xA98397 
                Exclusive, Channel 23 
        Calling Party Number i = 0x2183, N/A 
                Plan:ISDN, Type:National 
        Called Party Number i = 0xA1, '18035475200' 
                Plan:ISDN, Type:National
 
355795: Sep 15 22:02:13.309 EDT: ISDN Se0/0/1:23 Q931: TX ->
RELEASE_COMP pd = 8  callref = 0x2B2B
355796: Sep 15 22:02:13.589 EDT: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC
pd = 8  callref = 0xAB26 
        Channel ID i = 0xA98397 
                Exclusive, Channel 23
 
355797: Sep 15 22:02:15.001 EDT: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd
= 8  callref = 0xAB26 
        Cause i = 0x8091 - User busy 
        Progress Ind i = 0x8288 - In-band info or appropriate now
available 
 
355798: Sep 15 22:02:40.046 EDT: ISDN Se0/0/0:23 Q931: TX -> DISCONNECT
pd = 8  callref = 0x2B26 
        Cause i = 0x80AF - Resource unavailable, unspecified
355799: Sep 15 22:02:40.074 EDT: ISDN Se0/0/0:23 Q931: RX <- RELEASE pd
= 8  callref = 0xAB26
355800: Sep 15 22:02:40.122 EDT: ISDN Se0/0/0:23 Q931: TX ->
RELEASE_COMP pd = 8  callref = 0x2B26
 
 
Thanks!
 
Jason Burwell
Telecom Network Administrator
Founders Federal Credit Union
 
 
Notice:  All statements and representations in this transmission are not
necessarily those of my employer.
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