Hi, My 3CX PBX is registered to a few providers, LocalPhone is one of them. Registering is no problem. Receiving a call from this LocalPhone account works okay. When I make a call and try to route this to LocalPhone, it will not work. In the Server Activity Log it says: 14:38:50.138 [CM503003]: Call(27): Call to sip:firstname.lastname@example.org:5060 has failed; Cause: 403 Fake FROM - use From=id next time; from IP:188.8.131.52:5060. (The IP 94.... is not mine, don't know where that comes from.) Anyway, the call is not made and it will pass on to the next entry in de outbound rule set (to Xeloq) which will process the call correctly. I could make calls with this LocalPhone account using the VIOP part of my Draytec router, so the problem is in the combination 3CX and LocalPhone. Can anyone help me with this? Thanx in advance! Regards, Edwin.