Can Only Hear Sound Both Ways During Transferred/Forwarded Calls

[olivermsubadra]

Audio for all calls that are forwarded/transferred works fine. However, any immediately received/made calls only have one-way audio: a caller/callee to one of our softphones cannot hear any sound from the softphone making/receiving the call (but the softphone user can hear the voice of the other party).

As far as I can see the log doesn't point out any difference between the call being made to the original extension and the 'forwarded version' of the call:

05-May-2016 14:34:55.155   Leg L:4.1[Line:10000<<[NUMBER]] is terminated: Cause: BYE from PBX
05-May-2016 14:34:55.155   [CM503008]: Call(C:4): Call is terminated
05-May-2016 14:34:55.155   Leg L:4.3[Extn] is terminated: Cause: BYE from 10.195.194.40:57081
05-May-2016 14:34:45.865   Leg L:4.2[Extn] is terminated: Cause: BYE from 10.195.194.3:5401
05-May-2016 14:34:45.759   [CM503007]: Call(C:4): Extn:431 has joined, contact <sip:[email protected]:57081>
05-May-2016 14:34:45.758   L:4.3[Extn] has joined to L:4.1[Line:10000<<[NUMBER]]
05-May-2016 14:34:45.758   NAT/ALG check:L:4.3[Extn] RESPONSE 200 on 'INVITE' - basic check passed. No information for extended checks
05-May-2016 14:34:43.090   [CM503025]: Call(C:4): Calling T:Extn:431@[Dev:sip:[email protected]:57081;rinstance=728f464cb708760f;transport=UDP] for L:4.1[Line:10000<<[NUMBER]]
05-May-2016 14:34:43.038   [CM503027]: Call(C:4): From: Line:10000<<[NUMBER] ("[NUMBER]:401" <sip:[NUMBER]@[DOMAIN]:5060>)  to  T:Extn:431@[Dev:sip:[email protected]:57081;rinstance=728f464cb708760f;transport=UDP]
05-May-2016 14:34:43.038   [CM503004]: Call(C:4): Route 1: from L:4.1[Line:10000<<[NUMBER]] to T:Extn:431@[Dev:sip:[email protected]:57081;rinstance=728f464cb708760f;transport=UDP]
05-May-2016 14:33:47.664   [CM503007]: Call(C:4): Extn:401 has joined, contact <sip:[email protected]:5401>
05-May-2016 14:33:47.663   [CM503007]: Call(C:4): Line:10000<<[NUMBER] has joined, contact <sip:[email protected]:5060>
05-May-2016 14:33:47.663   L:4.2[Extn] has joined to L:4.1[Line:10000<<[NUMBER]]
05-May-2016 14:33:47.663   NAT/ALG check:L:4.2[Extn] RESPONSE 200 on 'INVITE' - basic check passed. No information for extended checks
05-May-2016 14:33:42.681   [CM503025]: Call(C:4): Calling T:Extn:401@[Dev:sip:[email protected]:5401;rinstance=da050df101fb7142] for L:4.1[Line:10000<<[NUMBER]]
05-May-2016 14:33:42.634   [CM503027]: Call(C:4): From: Line:10000<<[NUMBER] ("[NUMBER]:401" <sip:[NUMBER]@[DOMAIN]:5060>)  to  T:Extn:401@[Dev:sip:[email protected]:5401;rinstance=da050df101fb7142]
05-May-2016 14:33:42.634   [CM503004]: Call(C:4): Route 1: from L:4.1[Line:10000<<[NUMBER]] to T:Extn:401@[Dev:sip:[email protected]:5401;rinstance=da050df101fb7142]
05-May-2016 14:33:42.633   [CM503001]: Call(C:4): Incoming call from Line:10000<<[NUMBER] to <sip:[email protected]:5060>
05-May-2016 14:33:42.633   NAT/ALG check:L:4.1[Line:10000<<[NUMBER]] REQUEST 'INVITE' - basic check passed. No information for extended checks

 

[NickD_3CX]

Are the "Supports Replace" and Supports Re-Invite" option in the Provider Settings -> "Advanced" unchecked? Also PBX Delivers Audio there should be checked.

If that is OK, then this will probably be easier to troubleshoot using Wireshark to see exactly what is happening...