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?