I've got a Linksys ATA behind NAT and a softphone behind NAT. Both seem to register with the same UDP-NAT string and both have the same type of contact string.. but on one FS is rewriting the RTP IP to work properly - the 1102 works, but on 1000 I don't seem to be getting any audio.

Is there some hidden parameter I can't see affecting this? Both are dialing the same extension 9664 default MOH stuff...

This softphone actually seems to have a responsive gui in linux. If I can get the audio to actually work, that would great!

(Oh, it has tls/srtp too, it seems)

Thanks!