I have a Cisco IP phone which I'm trying to configure with my Draytek 2820n router.

The router is running DHCP. I have entered the IP address supplied by the company who will be routing calls to me within DHCP, and binded it to the MAC address of the phone.

It was working for a few days until my IP address changed. My ISP issued me with a static IP, which I supplied to the company routing calls. Since then, there has been a constant "Configuring IP" message on the Cisco screen.

Any ideas?