One way audio, phone proxy user to phone proxy user

Unanswered Question


I have several users that are using phones over asa phone proxy (ASA v8.2) and when they make calls from their phone to phones that are not on the proxy, two way audio is established. If a phone proxy user calls the phone of another phone proxy user, the call results in one way audio from the originating caller. so on the originating side, the user cannot hear the called party and also the originating caller has no recvr packets.

any ideas? i've triple checked the MTP config on the ASA phone proxy and it looks fine.

I have this problem too.
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Kureli Sankar Wed, 01/06/2010 - 10:31

case number?

Most of the times the issue with one way or no way audio is routing. Call manager on the inside will have a diff. way out to the internet besides this PP ASA.  If you are running dyanmic routing protocols (due to some known defects) it is a good idea to upgrade to the latest code in the 8.0.4.x train or 8.2.1.


vilaxmi Wed, 01/06/2010 - 20:17


Could you please elaborate as to why were u asked for an upgrade (any BUGS.. on code was revealed or just an upgrade for tetsing)?

Although, SIP issues gets complicated.. if you could post the running-config of ASA , we can look into it for any possible clues.



Rafael Trujilho Sat, 01/08/2011 - 06:08

I'm with the PP solution installed, but it started to have problems related to audio, where both sides do not hear each other.

The "only" recent change in environment has been upgraded from Call Manager, going from version 6.1.4 to 7.1.5. Question, this could cause impacts on the PP? Once the PP was implemented when the MC was in the old version.

Any ideas about problem the audio in PP?

Follows topology the environment in attached.

Status ASA:

Version - 8.2 (1)

Kureli Sankar Sat, 01/08/2011 - 08:21

Pls. open a TAC case so we can gather captures and analyse where these audio packets are going.



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