mgcp PRI call fails on inbound foip call

Unanswered Question
Mar 9th, 2008
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Hi,


I have a PRI line configured through MGCP, all outbound FOIP calls, regular inbound/outbound phone calls work fine, traditional fax machines can send and receive with no problems. I've tried looking for documentation relating to this, my GW is setup as MGCP CA-Controlled mode for T38 to work with mgcp. Below is the debug output I get when I do debug isdn q931. Can anyone shed some light on why I receive the: Cause i = 0x80A2 - No circuit/channel available error?

It doesnt make sense that I can send faxes via FOIP, but not receieve them if I have a proper route on my CCM4.2(3) outbound.


*Mar 9 18:25:19.443: ISDN Se0/0/0:23 Q931: TX -> SETUP pd = 8 callref = 0x0008


Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98381

Exclusive, Channel 1

Calling Party Number i = 0x2881, '2135952523'

Plan:National, Type:National

Called Party Number i = 0x80, '13237833695'

Plan:Unknown, Type:Unknown

*Mar 9 18:25:19.515: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd = 8 callref = 0x8008

Channel ID i = 0xA98381

Exclusive, Channel 1

*Mar 9 18:25:19.543: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8 callref = 0x0328


Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98382

Exclusive, Channel 2

Calling Party Number i = 0x2081, '2135952523'

Plan:Unknown, Type:National

Called Party Number i = 0x80, '3695'

Plan:Unknown, Type:Unknown

*Mar 9 18:25:19.563: ISDN Se0/0/0:23 Q931: TX -> CALL_PROC pd = 8 callref = 0x8328

Channel ID i = 0xA98382

Exclusive, Channel 2

*Mar 9 18:25:20.467: ISDN Se0/0/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x8328 Cause i = 0x80A2 - No circuit/channel available

*Mar 9 18:25:20.499: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT pd = 8 callref = 0x8008 Cause i = 0x80A2 - No circuit/channel available

*Mar 9 18:25:20.503: ISDN Se0/0/0:23 Q931: RX <- RELEASE pd = 8 callref = 0x0328

*Mar 9 18:25:20.519: ISDN Se0/0/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8328

*Mar 9 18:25:20.523: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd = 8 callref = 0x0008

*Mar 9 18:25:20.551: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x8008

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chrclark Fri, 03/14/2008 - 10:53
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  • Cisco Employee,

The debugs indicate that you placed an outbound call from 2135952523 towards 13237833695.


Telco then hairpinned this call back to you with called number 3695.


Is this what you expected?



Chris

tomtom001 Thu, 04/03/2008 - 21:28
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Can you paste your config with the relevant IP information removed?


Looks to be a config issue.

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