I am trying to forward calls recieved by my Draytek 2920V from my first Draytel SIP account to my second Draytel SIP account, and it doesn't seem to work.

So under the VOIP options on the Draytek admin web interface, I am setting my first Draytel SIP account to always forward my calls to my second Draytel SIP account (i.e. 1234567@draytel.org). The second account is not registered with the Draytek router, but is registered with a SIP application on my iPhone and I can call that directly via the Draytek router with no problem.

With forward set to always, when I call my first account, using SIP all that happens is that the line goes dead. If I dial in from PSTN, I get a message saying this phone is not working.

Am I doing something wrong or does this feature not work?

Thanks, Simon