Hi, I am trying to run an Asterisk (1.4.11) server on Linux Suse. The server is behind NAT. I am testing with SIP client that developed from PJSIP running on Pocket PC Windows Mobile 5.0 . The client is also behind another NAT. STUN server is implement in SIP client. When a register Message send from client to server, Asterisk receive it and reply with 100 trying msg. However, there is no reply on 200 OK from server, as it course my SIP client registration failure. 1. On the other hand, if i tested with OPENSER SIP server, registration is fine. Important details are below: sip.conf [global] nat=yes canreinvite=no localnet=192.168.1.46 externip=60.xx.xx.xx.xx [8000] type=friend secret=8000 nat=yes host=dynamic canreinvite=no How can i solve it? p/s : Network traffic capture in Ethereal are attached. ~ cobra client.cap - capture at client side ~ cobra server - capture at Asterisk server Thanks Regards kum _________________________________________________________________ Stay connected with your friends and discover new ones on Windows Live Spaces! http://spaces.live.com?mkt=en-my -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20070903/d1def585/attachment.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: cobra client.cap Type: application/octet-stream Size: 6579 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20070903/d1def585/attachment.obj -------------- next part -------------- A non-text attachment was scrubbed... Name: cobra server.cap Type: application/octet-stream Size: 2623 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20070903/d1def585/attachment-0001.obj