The phone lines are active and ready to use when they are emailed to you. You can check to see if it is working by dialing the number on a different phone to verify that it is ringing on the forward-to number that you've provided.
https://www.inmateaid.com/ask-the-inmate/i-set-up-a-phone-account-last-week-and-still-haven-t-heard-from-my#answer
Accepted Answer Date Created: December 09,2015