I've recently reset my Technicolor TG784n v3 and I've successfully set up my Internet. But for voip I can't seem to set it up, mainly because I keyed in the wrong password for voip.

I've seen some post before the password is <VOIP PHONE NUMBER><1> but it's not successful for me. keep showing status ticked but not registered.

My currently settings it set to
SIP and URI is : my VOIP phone number
Password and confirm password is : my VOIP phone number + 1
other all blank and port is set to all.

Is there any thing that is wrongly set up?