I need some help with a routing problem. We have just integrated VOIP into our company for the first time. We are using a Mitel SX-200 PBX. Currently the VOIP network is physically separate from the computer LAN. Both networks have completely different subnets, the Computer LAN is 192.168.1.0 and the VOIP LAN is 192.168.2.0. The VOIP LAN is not connected to the internet. It still uses the old copper method (PSTN) for the carrier service. We have a Sonicwall 2040 firewall that sits out in front of the computer LAN.
I would like some advice on the best approach to linking these two LAN’s together. I would like to either use the Sonicwall 2040 to route these two networks or use the switches that are on these two separate networks and create VLAN’s to do the routing, or possibly purchase a separate router to do this. I don’t really care I just want to do it the right way. Also I have one foreseeable problem, and that is the PBX uses a DHCP server to assign the VOIP phones an IP address, and I also run DHCP on our Microsoft 2003 server to assign IP addresses to the workstations.