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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.

4 REPLIES
Green

Re: H323 Call Disconnection Problem

Disconnect Cause=41

Error 41 is Temporary failure

I know this doesnt say too much, please upload the sniffer trace, debug h225|h245 events and asn1 and the configuration you have.

Which codec r u using with the SJ Labs?

Thanks

New Member

Re: H323 Call Disconnection Problem

Hello,

I have tried G729, Ulaw both but no success. attached is the sniffer file (Ethereal)

My machine IP: 197.x.x.250

Router IP: 71.x.x.142

New Member

Re: H323 Call Disconnection Problem

I forgot to mention show version above (IOS is bit old , but before upgrading i need a good comment from any of you ):

Cisco IOS Software, 3700 Software (C3725-SPSERVICESK9-M), Version 12.4(3), RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Fri 22-Jul-05 02:27 by hqluong

ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)

K3725c-Cambridge uptime is 7 weeks, 5 days, 9 hours, 39 minutes

System returned to ROM by reload

System image file is "flash:c3725-spservicesk9-mz.124-3.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco 3725 (R7000) processor (revision 0.1) with 247808K/14336K bytes of memory.

Processor board ID FTX0924A3GK

R7000 CPU at 240MHz, Implementation 39, Rev 3.3, 256KB L2 Cache

2 FastEthernet interfaces

1 Serial interface

2 Channelized T1/PRI ports

DRAM configuration is 64 bits wide with parity disabled.

55K bytes of NVRAM.

62592K bytes of ATA System CompactFlash (Read/Write)

31360K bytes of ATA Slot0 CompactFlash (Read/Write)

Configuration register is 0x2102

Green
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