We've a client with an existing Virgin cable connection running at 150Mb and a Cisco router onto the LAN.

Can you configure the 2820 as a LAN device (ie disable the router) and use the Cisco as the default gateway??

I've tried a few options but can't get this to work! I can add a default static route from the CLI but that doesn't seem work.......

Any suggestions welcome!

Netwiz

I have my IPPBX 2820 working into another router then to a fibre connection. Instead of a Cisco switch, my other router is a Checkpoint Firewall (giving me double firewall protection after experiencing repeated DOS attacks which freeze the IPPBX but not the Checkpoint firewall). On General Setup I have WAN2 set to Ethernet and auto negotiation. On Internet Access/WAN2 I have PPPoE disabled and Static or Dynamic IP enabled. On the later config page I have the WAN IP Network settings set to a fixed IP address, subnet mask and Gatway IP Address (all being the router port connected to the IPPBX). I have also set my DNS settings to the firewall device, but that obviously depends where your DNS is located.
I hope that helps.