You can't have IVC's on different subnets (It will work at first but as soon as your power-cycle the system, the second card will not come online) , though they can have different gateways. At the remote site have them set up the DHCP server so your IP phones are all given their own gateway to (your VoIP router). Windows server and many enterprise gateways/routers/firewalls can do this. If you don't control the DHCP at the remote site you'll need to give them a list of MAC addresses.

Last edited by bdunne; 01/11/14 01:59 PM.

Brian Dunne
ETC Telecom
www.etctele.com