Dear All, I am using pjsip between 2 devices (1 is PC and 1 is my embedded device).I use IPTEL server to test.The problem I am facing are: - If I send the SIP command from embedded device to PC (INVITE to call or hold call) is always ok - But if I sent the INVITE command from PC (call or hold) to embedded device.I usually get the error message (408 - request timeout or 500 - could not forward the call) I suspect the application on PC sending command too fast.does anyone have experience this problem? Any quick fix for that? Thanks & Best regards Jerry -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20111024/a65cf5a7/attachment.html>