Hi Farhan, Does the Linux router have a public IP on eth0? If not, you have two NATs cascaded, which is quite difficult to make work correctly with H.323. Perhaps you can reconfigure the network to avoid the double NAT, or set up some port forwarding. In your application, will you need MyPhone to receive calls? If so, you will have to set up port forwarding, which might also fix the one-way voice problem. Will you need to have MyPhone running on several different Windows machines behind the same Linux router? If so, the best solution may be to run another gatekeeper on the Linux router. IMO, the best way to fix this is to first understand what is going wrong. It should be easy for you to run Ethereal or tcpdump on both eth0 and eth1 of the Linux router, to see if voice packets are coming in, and if they are properly being sent back out. --Stewart ----- Original Message ----- From: "Farhan" <farhan@xxxxxxxxx> To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx> Sent: Sunday, August 28, 2005 5:00 AM Subject: My network interface (Igor Prokhorov) Hi ........ for your kind consideration I depict my network interface here.... [eth0] [eth1] Main Router -> Main Switch ----> DHCP Server ------> DHCP Client (Linux) [NAT] (WINDOWS) do you guess somthing about my problem ? Regards ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/