I am trying to set my VOIP phone to call a Sipgate number. I have put the SIP address in the speed dial page of the member centre(email@example.com). I then dial the short code (02) - after a while, the phone responds with a number engaged type tone.
Am I doing anything obviously wrong?
I am using a Zyxel 2602HWL-61C with a phone plugged into the phone port. I have no short dials in the router. I also have a sipgate account in the router, with which I can call the other sipgate number.