Hello, Small update on my project. So far, we successfully ported Sasa's Wrapper to WinCE. It worked almost without any changes. Thanks a lot to him because his work is going to save a lot of time for me :) What currently works : - Start pjsua - registration - set up a call - receive a call - hang up a call - un-register I still experience some issues : - When calling pjsua_acc_del(accountID), the on_reg_state() callback isn't called. Looking at the logs, pjsua delete the account before receiving the 200 OK from the server, this preventing it from calling the on_reg_state(pjsua_acc_id acc_id) callback, because the account have already been deleted - During a call, some times It doesn't send any sound. After putting on hold the call, and retrieving it, the sounds works. And i get a lot of BAD Ptr for the RTP session - when calling pjsua_call_hangup(), it takes most of the time 8 to 15 seconds for the call to hang up. Same goes when the other UA initiate the hang up About the IMS-Specific things for SIP, it is mainly Headers. (like the P-Access-Info header which describe which kind of "connection" the signaling is sent on, like 3gpp-umts-cell, wireless-network, ect ect). I can give you a small overview of the 3gpp-specific headers if you're interested. That's it for now, work is going on for the GUI, and hopefully we should have a beta version in about 1 week. Regards, Olivier B. -- Olivier Beytrison Telecommunication Engineer Mobile: +41 (0)78 619 73 53 Mail: olivier at heliosnet.org GPG: 0x4FB83528 http://pgp.mit.edu/