Hi,<br><br>What is the best way to implement Automatic Redial on No Answer ?<br><br>Looking at <a href="http://www.ietf.org/internet-drafts/draft-ietf-sipping-service-examples-12.txt">http://www.ietf.org/internet-drafts/draft-ietf-sipping-service-examples-12.txt
</a> I can see how Automatic Redial on Busy could (should) be done.<br>How would you do it on No Answer ?<br><br>Is there any event you should SUBSCRIBE to so that you're notified that you're callee is available ?
<br>What if you ask to be notified of next call ending ?<br><br>This is particularly useful when phones accept several calls : on some of them, I couldn't find a way to force them to reply "486 BUSY" after a wait, when the callee is on call and couldn't explicitly reject or accept the incoming call.
<br><br>The scenario is :<br><br>A calls B which is already on call,<br>B is notified another call is here but B don't either reject or answer the incoming call<br>A has no way to know if the call is not answered because B is not there or too busy to reply
<br>Ideally, A would then ask for Automatic Redial on No Answer, with a NOTIFY-SUBSCRIBE<br>Later, when B is finishing a call (the one he was busy with or a brand new one after returning to his desk), A is notified and Automatic Redial can occur.
<br><br>Regards<br><br>