I've compiled/configured freeSwitch on Debian Etch - IP 192.168.24.10 on a computer at home behind a NATing firewall. My firewall/router has SIP (5080) and RTP (16834-) ports forwarded to the computer running freeSwitch. My setup is as follows: a) 2 Cisco 7905G IP phones configured with the latest firmware at extensions 1000 & 1004 b) X-Lite softphone at extension 1001. c) X-Lite softphone at extension 2010 at my office. Calls between ALL devices on my LAN (extensions 100x ) work without problems. I can receive calls from extension 2010 to the X_Lite extension (1001) on my LAN. My problem is that audio from external extension 2010 to either Cisco IP phones on my LAN is one-way. Cisco 7905G to X-Lite works but X-Lite to Cisco 7905G does not! The X-Lite phone at extension 2010 is also behind a NATing firewall! Has anyone experienced this issue before?