Has anybody had much success setting up a 2820 for DUAL WAN.

Every time I try I lose internet on WAN 1, with nothing on WAN 2. I'm using the latest firmware 3.3.7_232201

I'm trying to use WAN2 for my SIP traffic, but not getting on very well. Has anybody move to a PEPLINK?

Jeremy.

Dual WAN certainly works well for me - if you want SIP traffic to go through WAN2, make a load balance rule under the WAN - Load Balance Policy menu, in there set up a rule for all traffic for a specific destination IP address (which I'm guessing will work if you're using hosted VoIP or a remote PBX) to go through WAN2.
No idea why you'd see WAN1 not work when WAN2 is up though?