Hello, I have downloaded the latest pjproject-1.0 from pjsip.org and have compiled it on Ubuntu (x86). If I run the standard PJSIP executable "pjsua-i686-pc-linux-gnu" at 'pjproject/pjsip-apps/bin' location, I am able to make and disconnect the call. I am also able to hear voice and it is working fine. I have cross compiled the same code for ARM platform on the same machine. With this cross compiled executable, I am able make call, connect and disconnect call. But I am not able to hear voice at both the ends. I have tried the above thing for another sample application "simpleua.c" available with pjproject-1.0. With this, I am able to hear voice on both Ubuntu and ARM machine. Since Please reply what could be wrong. Or am I missing something ? Thanks in advance. Sandeep