Hi, I'm testing a snom 190 behind nat, using an external stun server. Problem is that the phone first register itself with the internal ip address, then checks for stun and registers again with the correct ip address. After the registration timeout the phone register just once with the correct ip .... any idea about such behaviour ? Tnx ! P.S. Fw version is snom190-SIP 3.46 -- Best regards, Alessio mailto:afoc@interconnessioni.it