Hello, I posted a question about replaced calls on this forum several months ago, but have not got any answers back then. Our problem is that an Aastra MX-ONE user agent sends a re-invate with the replaces option for every incoming call. Even if we send back OK in our on_replace_request() python callback, the on_replaced() callback is never called. I did some debugging, and it seems that the _cb_on_call_replaced() function in pjsua.py is called, but when it tries to fetch the new call with this line new_call = self._lookup_call(new_call_id) it comes up with nothing, and that is why my callback function is not called. Anybody has any idea/suggestion about this one? Thanks, Norbert -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120502/9ed354be/attachment.html>