Let me know if this is possible, Alright Im running a asterisk box w. a couple cisco 7640 using sip proto. Now if I set the asterisk box to dmz host and give my friend one of the phones and we configure everything to run off my server will it work? The only reason I think it wont work is because in the config in the phone the have to be local ip's and not internet ip's does anyone know if this is true?
You have a router that can route from one IP to another IP thus joining two dissimilar networks together. So you can do it yes.