[cisco-voip] Delayed audio-cutover with H.323 gateway

[Erick Bergquist]

Hi,

I'm having a issue where an inbound call comes in FXO port and connection plar's to a shared DN across 5 IP Phones. The phone call gets answered fine, but the user on IP phone saids "Welcome to BlahBlah" and the outside caller doesn't hear the first time they say "Welcome To BlahBlah" and the IP Phone user repeats their greeting and they hear it the second time fine.

There are no errors on any interfaces that I can see, and the gateway has voice rtp send-recv enabled. Issue does not happen on calls over PRI, just the analog FXOs. I have disabled caller-id on the voice-port and also tried connection plar opx with no difference. Sometimes it works fine but rarely. 

CCM is version 4.1(3)sr3c and the gateway is a 1760 running 12.4(8a). 

A similar problem can happen when the call is parked or put on hold also, now and then.