Hi Everyone!
I just wanted to throw my two cents in here, too. Sara Mosure (mosureofficesolutions) suggested Vonage. My husband and I have an account with them, too. If you are a small business owner, Vonage will offer the service for free provided their technicians have to provision the device before you add it. So, feel free to check it out!
www.vonage.com
Thanks!
Kathya