On Dec 20, 2009, at 2:53 PM, Gad Bentolila wrote: > DISCLAIMER: I'm REALLY new to FreeSwitch, so please take my advice with a > grain of salt.
Welcome to the community. > I have a similar setup (and problem) - the wiki documentation refers to it as > "double nat". Like you, my FS and client are behind different NATs and I can > register my remote endpoint and make calls (in my case, to the the FS demo > ivr at 5000). > > Since your external endpoint (spa3102) is registering, you've likely setup > your sip profile correctly (ext-sip-ip, ext-rtp-ip, nat settings, etc). Your endpoint need only insert rport and FreeSWITCH will do the right thing. > 1) Setup stun on your remote endpoint (spa3102 in your case) > 2) Add <variable name="sip-force-contact" > value="NDLB-connectile-dysfunction"/> to the directory xml file that > describes your spa3102 endpoint The device supports STUN also its highly recommended your device know how to overcome its own NAT. I personally do not believe its the registrars place to overcome an endpoints nat... puts undue burden on the registar. > Option 1 worked for me right away (eyebeam in my case) and, as expected, the > remote sdp had the correct (remote) IP address, since the endpoint is using > stun to correctly identify its IP address to FS. However, option 2 has not > made a difference (for me). Is it just me or is it strange that SIP works > without stun, but RTP doesn't? > > I guess I've been spoiled by the way Asterisk handles NAT and was hopeful > that NDLB-connectile-dysfunction would behave similarly, so I wouldn't have > to tell users to setup stun on their clients. Maybe a FS user with some > experience with this type of NAT setup and these settings can help. I'd be > interested in knowing how to correctly setup remote NATted endpoints without > stun - or, at least, hear from someone that this setting works for them > without stun. > > Anyway, hope this helps you with your SPA3102. Bottom line is enable rport and use stun on the SPA and it'll just work. /b
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