I have a new obi already; looking for the best inexpensive service for my parent's residential line. Needs to have 911 as an option. I was looking at callcentric but they don't make it simple because you have to buy both an incoming and outgoing...seems weird. Needs to be fiddle free, they probably don't make a ton of calls - 400 min a month or less. Thanks for any advice. They need to port their number over, too. GV seems like a bit of a hassle on that part of it.