One way voice problem in Phone proxy

Unanswered Question
Jul 3rd, 2009

I have configured my ASA for Phone Proxy.The phones gets registered via Phone Proxy but the voice traffic is one direction .Attaching the running config for the same. Kindly help

I have this problem too.
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redrobish Wed, 07/08/2009 - 16:33


You could be having a routing issue. The voice packet could be going out on a different path and not going back to the ASA's MTA path.

there's 2 method to fix this:

1. add a static route at your router/switch. see this link for more details:

2. or you upgrade your ASA to Version 8.2(1). This version fixed the MTA routing issue. But you need some minor changes on the config such as putting the MTA per interface. for me this is the best way but it's your decision and your own risk...



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