VOIP Call Disconnects on answer/ off hook

Unanswered Question

Hi


I am having a problem whereby IP calls coming in over the WAN are being dropped on lifting up the handset. In the past I have had this problem when there is a routing problem but this does not seem to be the case this time. Do you have any suggestions on what this could be ?


Call Flow is


PSTN->PBX->E1->3825->MPLS->3825->E1->IPPBX->IP Phone


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ccieid10t Wed, 10/03/2007 - 05:26
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Try answering with the speaker button. If it answers than you have an issue with your handset trigger.

agonza07 Wed, 01/02/2008 - 14:48
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Had a similar problem, but not intermittent. One of my routers was forcing a codec on a dial peer, so I was getting a codec mismatch. Calls would ring but as soon as someone answered, it would disconnect the call. And it was only when accessing that dial peer.


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