You've talked with me on it so you know the reception. Not 100% reliable as sometimes a space-ship flies between here and the satelite. 
Our internet provider is xplornet.com, the phone is connected through the net and the provider is Dolphin Communications. I understand that xplornet now has their own phone service, it may be better as 2 companies won't be scrapping.
The only thing to get used to is the 10-15 second delay for connection to the party you are calling and having them hang up several times before they get mad enough to stay on and cuss you out.
I tell folks that if it's the creepy caller that doesn't answer right away it's probably me. 8)