Hi All, I ' m using Cisco 7970 IP Phone and Asterisk 1.6.0.10-FONCORE-r40 (Tirxbox). My problem is that I upgrade my phone to SIP image but now this phone is not registering. The error likes this : SIP/2.0 403 Forbidden (Bad auth) The phone and Trixbox are in the same network. There arenot any NAT rules. Can you help me please?