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QSIG connection with SIEMENS PBX

Unanswered Question
Mar 5th, 2002
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We have the following scenario: Two Cisco routers (one 2610 and one 7206) connected via Frame Relay between them, and each router has a PRI - QSIG (using NM-HDV-1E1 card) connection on a SIEMENS HICOM 300H PBX. Everything works fine (all the features of the PBX pass through to the other side), EXCEPT the CALL-BACK feature. I have captured traces for debug isdn q931 on both routers, and I noticed that when the callback request is made from the PBX, the debugging shows "Cause i = 0x80A2 - No circuit/channel available".

Note again that ALL other features (conferencing, transfer, name display etc) pass through without problems. Another thing to consider is that we are using VOIP dial-peers with dtmf-relay h245-alphaneumeric enabled.

Does anyone encountered similar problems before.


thank you very much

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litrenta Tue, 03/05/2002 - 07:29
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Probably caused by CSCdw08887 which affected all qsig signalling only setup messages. Fix was integrated into 12.2(7)

pambosch Wed, 03/06/2002 - 23:09
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I changed the IOS to 12.2.7 and looks like the problem is fixed now. Thank you very much Sam.

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