my apartment complex's buzzer calls your phone to allow you to buzz people in. unfortunately, it has to be the local area code. my personal cell phone i've had for 5 years and i really don't feel like changing it. my work cell has an LA area code, but not the one for town. so my thought was that i can sign up for a google voice number, program my buzzer with it, but have calls forwarded to my personal cell to buzz people in. that's pretty much the point of GV, right? in order to use it, will i need to install the GV app in cydia or can i just program the number to be forwarded to my cell? thanks!