Hi,
The destination GW is probably sending the ringing tone as audio (e.g. after Progress). The NAT doesn't know to what private address to send the audio, until the caller sends some audio out. But that won't happen until the called party answers and Connect is received by the caller.
To fix this you can:
1. Configure the NAT to forward the UDP ports used by your endpoint for RTP and RTCP. Find this from endpoint docs or by sniffing. Or,
2. Configure the endpoint as DMZ. Or,
3. Set the destination GW to send Alerting, and the calling device to play a local ringing tone. This is not a good solution for calls to PSTN, etc., because 'number has been changed' and similar announcements will not be heard.
--Stewart
----- Original Message ----- From: "Rafat Subhan" <rafat@xxxxxxxxxxxxxxx>
To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
Sent: Monday, September 13, 2004 12:35 PM
Subject: No ringing tone
Michal.
I am testing one gateway , i am behind NAT and GK is on public IP, prob is this that i am unable to get ringing tone with this gw but i can hear & talk voice with other person , but no ringing tone. is this bug or what ?
shud i send u logs for this?
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