FreeDigits.com provide you with a working phone number...outgoing and incoming calls free. Not a bad deal..... best part is you don't have to download anything from freedigits. ===================== XTEN CONFIGURATION SETTINGS: Enabled: Yes Display Name: *Enter Your Name* Username: *FreeDigits Phone Number* (without 1 ex: 5637733700) Authorization User: *FreeDigits Phone Number* (without 1 ex: 5637733700) Password: *password* Domain/Realm: freedigits.net SIP Proxy: proxy.freedigits.net Out Bound Proxy: outbound.freedigits.net Use outbound Proxy: Default Send Internal IP: Always Register: Always =============================== Follow the same rules from above....instead of freecalls, use freedigits info.... and you are all set.... Guess the N800 is a IT/phone...as of today.