Hi, I want to be able to register to my usual extension when I am out of the office (on my iPhone SIP client). When I tested this, it appeared to work, but after someone phoned me, I was unable to phone anyone else (403 forbidden). I was then unable to register (again, 403 forbidden). I'm guessing 3CX doesn't like having two devices registered to the same extension... The only way I can see this working is if I set up separate "remote" extensions and configure the forwarding as required (but I'd prefer not to). Any suggestions?