Hi Mimiko, I have had hours and hours of problems with NAT, so I can at least tell you what helped me get past them. All of my problems have been in the configuration PHONE > NAT > Internet
FS .
CISCO SPECIFIC ISSUES: I learned through a long tough week with a new customer that CISCO 3xx and 5xx Series have a web setup section that is critical when behind NAT. When logged in as an ADMIN, on the SIP Tab, these NAT Support Parameters should be set to yes: Handle VIA received, Insert VIA received, Substitute VIA Addr, Handle VIA rport, Insert VIA rport, Send Resp To Src Port With those all set I have had pretty good luck with CISCO. GENERIC TO ALL PHONES: Brian and Michael have just worked me through a similar Registration issue with Polycom phones, but I am sure this applies to many others too. The key to understanding that it was a NAT issue was that the phones CSeq (in the Sophia global sipstrace on) did not change from one attempt to the next. It was always "CSeq: 1 REGISTER" and the second one would be "2 REGISTER" with the auth stuff attached. That shows it did not receive the response. In this case I added a parameter and a variable to the USER section of the "directory" on the server. <variable name="sip-force-contact" value="NDLB-connectile-dysfunction"/> <param name="NDLB-force-rport" value="true"/> I am not sure if that fits your case, but maybe it will help others in the future. Sean -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Mimiko Sent: Monday, December 10, 2012 8:59 AM To: FreeSWITCH Users Help Subject: [Freeswitch-users] Natting question. Hello. I have a FS behind firewall on which ports 5080,5060 udp are mapped to the FS server. A client connected directly to Internet, say using GPRS, authorise to FS and calling a number audio is heared. When this client is connected via WiFi to some router connected directly to Internet, client authorises, calls but there is no audio. So I'm stump on where to look for issue: on FS server side with firewall or on client side behind router? Thank you. -- Mimiko desu. _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org