ahh ok dont have anything like that on the netgear! only a static route option and that dont work wont accept any settings i put in!

so next options are
1 change the Netgear for something with more options
2 Set up extra VPN's between offices (netgear does up to eight I believe)

Yeah thats what I was thinking I would have to do supprised noone else has come across this! thanks any for your input

Just been looking at the V2 manual (again don't know what version you are running)
Look for "Using Manual Policy to Configure VPN Tunnels" Page 48 - looks like it may have the options required if you bypass the "easy setup"

- But wait just read the text and maybe not, doh! thought I'd found a way.

I was thinking there may be some fancy subnet setup to route traffic but I can't think of a working one and a couple or replacement routers may be the way.
Adding extra VPNs may work but depends what the VOIP software needs

got a V5 on both sites and did a manual policy but there is nothing there to choose!

OK options reducing to trying the extra VPN's or different routers.