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Receive busy-tone when dialing from an FXS port

We have a remote office connection that uses VPN over the internet. I wanted to experiment with how VOIP will behave over this circuit so I installed a phone line from our PBX into an FXO port into a 3660 router on our local LAN and had my contact at the remote site connect an analog phone into an FXS port on his 2621xm router. When I dial the remote site, my contact confirms that the phone rings. When he answers it, he hears nothing but dead air. When he calls me, he gets a busy signal. I've watched the FXO port that he is trying to reach and it will go off-hook for about a half second. Output from a debug voice ccapi inout appears normal. I believe that I have my destination-patterns and session-targets correct. I have also verified routing between the session-targets. Any ideas? TIA.

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Re: Receive busy-tone when dialing from an FXS port

Make sure you are sourcing from the correct IP. You can force the router to source h323 traffic from a particular IP by going to the interface and doing "h323 bind srcaddr "

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