ISDN trunk and VOIP

From: pbubienczyk@szczesliwice.pl
Date: Wed Jun 23 2004 - 08:03:49 GMT-3


I've got the problem with my VOIP network

I've two gateways (2651 with 12.2(11)T6 and 2621XM with 12.2(8)T5), they are
connected with two PBX Alcatel 4400 by ISDN BRI(2651) and PRI(2621XM) trunks.

I've problem with the facility message in ISDN SETUP message. Seems like PBX
don't like it and not accepting the connection.

Previously BRI trunk (now on 2561) ran on 3640(with 12.2(5)) and my VOIP was
working fine, and I think that there was no facility messages in ISDN SETUP.

Somebody knows how to get this facility out of ISDN SETUP message, or how to
fix the problem???

Log from 2651:

Jun 23 09:33:13: ISDN BR1/0 Q931: TX -> SETUP pd = 8 callref = 0x24
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0x83
        Facility i =
0x9E0100036774640000002E49414D2C0D0A4743492C366266386631333463343165313164383933
31636164386532346238646132310D0A0D0A
        - Unknown Service Discriminator
        Calling Party Number i = 0x0181, '225852536'
                Plan:ISDN, Type:Unknown
        Called Party Number i = 0xA1, '817'
                Plan:ISDN, Type:National
        High Layer Compat i = 0x9181
Jun 23 09:33:13: ISDN BR1/0 Q931: RX <- STATUS pd = 8 callref = 0xA4
        Cause i = 0x81E41C - Invalid information element contents
        Call State i = 0x06
Jun 23 09:33:13: ISDN BR1/0 Q931: TX -> RELEASE pd = 8 callref = 0x24
        Cause i = 0x80E5 - Message not compatible with call state

thx - Peter



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