The iPhone and iPad have software on it that keeps those units running. It is called “iOS”. OS means “operating system.” The current version is iOS 5 and the one that Apple rolled out is iOS 6. iOS 6 will not be available until the fall. Your iPhone or iPad will automatically upgrade to iOS 6 when it is ready.
What does iOS 6 have for video communication? Not much. The only thing they improved was allowing FaceTime to run under a cellular environment (3G, 4G). Right now, before iOS 6 you can use FaceTime only if you have WiFi coverage. With iOS 6, you will be able to use FaceTime in WiFi AND 3G OR 4G environments.
FaceTime is only for point to point calls with others who have Apple mobile units, not for relay calls.
This is the only thing Apple had for us deaf and hard of hearing people for video communication.
Dr. Z cares about your communication access.
Disclosure: Dr. Z (Philip W. Bravin) is associated with CSDVRS, currently its Vice-President of Business Development and Outreach.