[Users] nat problem

Hi, I have a registered Linksys, behind a USR 9108 modem. I can detect its nat, call Linksys and speak normally, but when I try to make a call from Linksys, call breaks down right after call setup. Linksys sends the via and contact ip's as 0.0.0.0 in invite messages and fix_nated_contact does not work. This is possibly because of the modem but, there are no extra configurations that can cause this in the modem. I will be glad if you can direct me with your experiences. thank you... _________________________________________________________________ Live.com'u deneyin: çevrimiçi dünyanýzý bir araya getirin; haberler, spor, hava durumu ve çok daha fazlasý. http://www.live.com/getstarted