i have a small office in Virginia with about 35 users. They have an M3904 at reception and want me to put a dummy extension on every phone so receptionist can forward her phone to this dummy DN that will ring everyone's phone. I set up an MCR key but just now discovered that there's a limitation of 30 phones i can put the same MCR key on. If i make it an SCR key does the same limitation still exist? and do you have any other suggestions that don't involve buying additional equipment? thanks for your help.