I have a client that is looking to change their existing Internet connection and I'm trying to design something that will work for them. Currently they have two bonded T1s that provide connectivity for both voice and data. Their phone system uses VoIP. We're looking to change the configuration and drop one of the T1s and bring in a Comcast business connection.
My thought is to use a Sonicwall TZ215 to provide failover capabilities in the event the cable connection goes down. However, I need to be able to route the voice traffic over the T1 and keep the data connection on Comcast except in the case of an outage.
Can the Sonicwall do this? If so, what does the configuration look like? Do I have to route based on a block of IP addresses? Should I set static IPs on the phones and create a rule so that block uses the T1?
Any insight would be appreciated.