Hi Mukesh I have tested using CSipSimple over 3G. It works well and voice clarity is also good. Check in CSipSimple settings -> enable only one transport , either wi-fi or 3g. In Device settings -> enable only umts, not dual mode. Regards Sasi Kiran From: Mukesh Srivastav <muki_champs@xxxxxxxxx> Sent: Fri, 23 Dec 2011 10:49:09 To: pjsip list <pjsip at lists.pjsip.org> Subject: CSipSimple Android Fail to Register on 3G Hi All, I had downloaded the latest version of CSipsimple for Android couple of weeks. The same thing i had tested on WIFI and there sip is registerd and i am able to make a call. My question is why i am not able to make a call on 3G network. The sip register is not all working. Sorry, cant get the logs. I see that, the Request is not at all going. Any tips/suggestion would be really helpful. Warm Regards, Mukesh Kumar, Android Consultant/Freelancer, India,Hyderabad. _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20111223/a8329a85/attachment.html>