I have two locations.
Location A has all the servers, one acting as the DHCP. We have VOIP phones at location A along with HP ProCurve Switches. I setup the phones on their own network and the data on another. Both networks get their IP addresses from the DHCP server. We have the Sonicwall NAS2400 and all is well here. Data 192.168.5.x and VOIP 192.168.11.x, GW 192.168.5.254. WAN 72.xxx.xxx.xxx
Location B is a new location. I am installing the Sonicwall TZ100. The LAN will be 192.168.6.x with the GW 192.168.6.254 and a WAN of 74.xxx.xxx.xxx. No servers, one HP Procurve switch. Point to Point VPN.
The computers at location B are fine. But when I try to program the phones at this location, they can't see the main phone system at location A. Also, I can't ping the VOIP LAN at location A.