Hello group, I could manage to build the symbian stuff. Debugging and running from CW did work, except the sock test fails with the error message attached. The symbian_ua.exe starts up but terminates immediately with some very fast print outs (cannot read). While debugging the session I found out, that the things crash in media_subsys_init, especially the call to pj_sock_close(sock) in get_local_interface (sock is 0, so this PJ_ASSERT_RETURN(sock != 0, PJ_EINVAL); in pj_sock_close does cause a bunch of flashing windows (Thread ID counts up in headline) and the whole process dies. Any pointer welcome. Regards -------------- next part -------------- A non-text attachment was scrubbed... Name: symbian.JPG Type: image/jpeg Size: 23014 bytes Desc: not available Url : http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20071211/91f19624/attachment-0001.jpe