Hi, I'm using Monday's FreeSWITCH build, with a config originally loaded 19 August 2010. I'm working my way through the FS 1.0.6 book. I have two phones, one Zoiper soft phone and one Cisco 7960. Both register fine, and the Cisco can call Zoiper. Zoiper cannot call the Cisco, however. The Cisco phone sends its register requests from UDP port 50790. When FreeSWITCH sends an INVITE to the Cisco, it tries to contact UDP/50790, and the phone returns an ICMP "destination unreachable." This same phone is also registered to an Asterisk box. When I call that number, asterisk connects to UDP 5060 on this phone. The phone replies from a high-numbered port to 5060. It seems I need some option to tell FreeSWITCH to send the INVITE to 5060? Or am I missing something? Thanks, ==ml -- Michael W. Lucas mwlucas@BlackHelicopters.org http://www.MichaelWLucas.com/, http://blather.MichaelWLucas.com/ New book available: Network Flow Analysis http://www.networkflowanalysis.com/