[cisco-voip] Inbound SIP Calls routing over QSIG link

Nick csvoip at googlemail.com
Tue Feb 15 11:24:07 EST 2011


Hi All

I'm trying to route inbound calls from SIP trunks through CUCM to another
PBX connected with QSIG, I have CUCM 8.0.3, with QSIG links to a IPC
dealerboard system and also a Nortel CS1000 PBX, these are set up as MGCP in
CUCM.

I also have SIP trunks for PSTN providing both inbound and outbound calling.
The issue I have is when I route inbound calls from the SIP trunks to CUCM
and across the QSIG links to the PBX's, the call will not complete and I
get Resources Unavailable, Unspecified on the debug on the gateway, I have
also taken a SIP trace and get a 503 Service Unavailable from CUCM to the
SIP trunks for the same call.

Has anyone successfully done this before and can I route SIP to Qsig or
would I need a CUBE even though its going through CUCM.

I have attached the debug and SIP trace.

Any help would be greatly appreciated as this is rather urgent now.

Regards

Nick
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Feb 15 10:42:26.544: ISDN Se0/0/1:15 Q931: TX -> SETUP pd = 8  callref = 0x0009
        Sending Complete
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA9839F
                Exclusive, Channel 31
        Calling Party Number i = 0x0083, '07918900845'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '5897'
                Plan:Unknown, Type:Unknown
Feb 15 10:42:26.580: ISDN Se0/0/1:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8
009
        Channel ID i = 0xA9839F
                Exclusive, Channel 31
Feb 15 10:42:26.592: ISDN Se0/0/1:15 Q931: TX -> DISCONNECT pd = 8  callref = 0x
0009
        Cause i = 0x80AF - Resource unavailable, unspecified
Feb 15 10:42:26.616: ISDN Se0/0/1:15 Q931: RX <- RELEASE pd = 8  callref = 0x800
9
Feb 15 10:42:26.632: ISDN Se0/0/1:15 Q931: TX -> RELEASE_COMP pd = 8  callref =
0x0009
sclonrt06004#


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