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H323 Call Disconnection Problem

Router: 3725 This router is being used for porting call legs via POTS/Dial-peers. T1's controller at this router is terminated in a PBX. When call are originated via Channel Banks (TDM via on both routers) - calls are successfully connected (via GRE Tunnels)

When we try connecting the pots via a soft phone (e.g. SJPhone) as a

H323 gateway, it connects the call but after like 2/3 seconds it disconnects automatically and phone displays a "Temporary Failure"

error. Looking on to sniffing, we found Router is communicating correctly with the soft phone PC and s sending H225 control messages successfully (so doesn't seems any revert routing issue - all public hosts are accessible and even all local hosts are fully able to communicate with this router and vice versa). We have tried different working (TDM) ports on the router but they don't work with H323.

logs are as followS:

debug h225 events

debug voip ccapi

*Oct 21 17:45:50.008: compose_TunnelledSignallingMessage_ciscoNo tunnelled content.

Hex representation of the FACILITY TPKT to send.: 08029000621C002813636973636F2053797374656D732C20496E632E7E0040052690060008914A00048B53F47D2D98D04ABE3E9D0C9C4CF3388601001F01801100F7EF2A0B93CD994A9F94E71AD2728D5D0100010010C00180050103218002

h225FacilityRequest: Q.931 FACILITY sent from fd=4

*Oct 21 17:45:50.008: //4284/8B53F47DBE3E/CCAPI/cc_api_get_transfer_info:

Transfer Number Is Null

*Oct 21 17:45:50.008: //4284/8B53F47DBE3E/CCAPI/ccConferenceDestroy:

Conference Id=0x7B3, Tag=0x0

*Oct 21 17:45:50.008: //4284/xxxxxxxxxxxx/CCAPI/cc_api_bridge_drop_done:

Conference Id=0x7B3, Source Interface=0x659FCB98, Source Call Id=4284,

Destination Call Id=4285, Disposition=0x0, Tag=0x0

*Oct 21 17:45:50.008: //4285/xxxxxxxxxxxx/CCAPI/cc_api_bridge_drop_done:

Conference Id=0x7B3, Source Interface=0x66174470, Source Call Id=4285,

Destination Call Id=4284, Disposition=0x0, Tag=0x0

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/cc_generic_bridge_done:

Conference Id=0x7B3, Source Interface=0x66174470, Source Call Id=4285,

Destination Call Id=4284, Disposition=0x0, Tag=0x0

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/ccCallDisconnect:

Cause Value=41, Tag=0x0, Call Entry(Previous Disconnect Cause=0, Disconnect Cause=41)

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/ccCallDisconnect:

Cause Value=41, Call Entry(Responsed=TRUE, Cause Value=41)

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/cc_api_get_transfer_info:

Transfer Number Is Null

*Oct 21 17:45:50.012: //4285/8B53F47DBE3E/CCAPI/ccCallDisconnect:

Cause Value=41, Tag=0x0, Call Entry(Previous Disconnect Cause=0, Disconnect Cause=0)

*Oct 21 17:45:50.012: //4285/8B53F47DBE3E/CCAPI/ccCallDisconnect:

Cause Value=41, Call Entry(Responsed=TRUE, Cause Value=41)

*Oct 21 17:45:50.012: //4285/8B53F47DBE3E/CCAPI/cc_api_get_transfer_info:

Transfer Number Is Null

*Oct 21 17:45:50.012: h323chan_close: TCP connection from fd=4 closed

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/cc_api_call_disconnect_done:

Disposition=0, Interface=0x64C4FB6C, Tag=0x0, Call Id=4284,

Call Entry(Disconnect Cause=41, Voice Class Cause Code=0, Retry Count=0)

*Oct 21 17:45:50.012: //4284/8B53F47DBE3E/CCAPI/cc_api_call_disconnect_done:

Call Disconnect Event Sent

*Oct 21 17:45:50.024: //4285/8B53F47DBE3E/CCAPI/cc_api_call_disconnect_done:

Disposition=0, Interface=0x66174470, Tag=0x0, Call Id=4285,

Call Entry(Disconnect Cause=41, Voice Class Cause Code=0, Retry Count=0)

*Oct 21 17:45:50.024: //4285/8B53F47DBE3E/CCAPI/cc_api_call_disconnect_done:

Call Disconnect Event Sent

Please if someone can advise.

1 REPLY
Silver

Re: H323 Call Disconnection Problem

Issue the voice call convert-discpi-to-prog global configuration command, available in Cisco IOS Software Release 12.2(1). Doing this converts a DISCONNECT message with a progress indicator value of eight to a PROGRESS message with a progress indicator value of eight so that audio is cut through and the Cisco IP phone hears the disconnect tones or announcement from the PSTN.

Try:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a0080111b58.shtml

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