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Problems with SIP Redirect

Hi, I have a Cisco 3640 that is configured to AAA with a Talking SIP Gateway. The TSIP Server is supposed to authenticate the called from the Cisco and redirect the Cisco to the outbound route, which is a Nextone MSW. All works well, except when the call is redirected to the outbound route, I get one way audio. Audio works fine from the outbound route back to the Cisco, but there is no audio from the Cisco to the outbound route. When I look at sh call act vo br, the tx counters stop soon as the call is redirected to the outbound route, i guess this means the cisco, for some reason is not sending rtp out? I'm using IOS 12.3(3g) on this box.

Has anyone seen a similar issue? Any ideas whats going wrong here?

Best Regards,

-Champike

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