I have a very small network of maybe two dozen machines, to which I've just added 7 IP telephones, talking to a Mitel controller on another site. I also have 2 ADSL links, using consumer ADSL routers. The 7 phones are on the same physical network as the PCs.
The 2 routers currently have internal IPs of 192.168.0.253 and 192.168.0.254: my existing machines all get addresses via DHCP and a default gateway of 192.168.0.254, but I would like the phones to have 192.168.0.253 as their gateway. DHCP service is provided by a Windows Server 2003 box, currently set up with a single scope with a fairly basic set of options.
I've tried creating a different scope on a different subnet for the phones, but presumably because the Windows server isn't on that subnet DHCP just times out on the phones. I've also tried creating "Reservations" for the phones, but the DHCP MMC will not let me change the Router option for a reservation.
What's the trick I'm missing here?