Hi Benny, 1. I comiled and run the Pjsip on Symbian using S60_3rd_FP2 on Emulator. 2. made a call from A--->B(Both side symbian S60_3rd_FP2 Emulators). no voice at both ends,i checked in ethereal RTP Flow at both side. I captured the packets in the format of cap. iam sending both caller and receiver packets information as an attachment in the form of cap file. plz open the files in wireshark or Ethereal. A is caller------>caller.cap B is Receiver -----> receiver.cap plz inform me where is the mistakes. Regards Rams --------------------------------- Forgot the famous last words? Access your message archive online. Click here. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20071218/e1c5e3f4/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: capture.rar Type: application/octet-stream Size: 106275 bytes Desc: 1742665671-capture.rar Url : http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20071218/e1c5e3f4/attachment-0001.obj