As the title says, this is what I'm dealing with. There is a vpn in place for this and the routers used are Sonicwall TZ100's. Apparently intercom calls between the two sites drop after 15 minutes. Panasonic support says there is some kind of tcp/udp timeout option that needs to be turned off. I don't have access to Sonicwall support so I don't know what to tell my customer to look for.

Anyone ever deal with this?