hello.. I'm a beginner in this SIP issue but I really like it; I'm also a Python programmer so when I see the pjsua project-1.6 the sky opened for me... This is my problem. I download the pjsua project-1.6 and compiled the py_pjsua solution using visual studio 2005. so far just fine. I have access to an Asterix PBX server and I wanna make some kind of softphone using wxPython and pjsua.py module. My test program had no problem with the REGISTER, but also the make_call function pitch up an Unknown Exception. this is exactly what it says: Registration complete, status= 200 (ok) Exception: Object: {Account <sip:user at 172.19.0.10>}, operation=make_call(), error=Unknown pjsip error 171142 Please I need your help!!! Thank for your attention!!! happy to be in this forum -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100528/44f557f4/attachment.html>