I use Google Voice to ring my cell phone and office phone (amongst others). The problem is, the office phone picks up after two rings. It's a Cisco CP-7942G, an ip phone. The time to ring setting is global. Seriously?!
So, the office phone picks up first. This isn't usually a problem, because i am by the office phone during the hours i set Google Voice to use it. But yesterday, for example, was a Monday that i was not in the office, it still picked up first because i forgot to turn it off.