Applications: Audio+Video communication system.
Highest Quality: real-time, near-VCD quality two-way video plus two-way audio live VidPhone service.
Easiest to Use: as simple to use as a telephone.
Platform: Windows 98SE, ME, Windows 2000, Windows XP, Windows 2003
VidPhones vs Functions

Functionalities	VidPhone Basic	VidPhone	VidPhone PRO
VOIP	YES	YES	YES
Make VidPhone calls	YES	YES	YES
Play video	YES	YES	YES
Send local video	NO	YES	YES
Phonebook function	NO	YES	YES
Record video	NO	YES	YES
Take snapshot	NO	YES	YES
Hi-resolution video	NO	YES	YES
Hassle-free roaming	NO	NO	YES

Explanation:
Caller ID System : I-Stream VidPhone aims to protect your privacy letting you see who's calling before you answer
PhoneBook -- Displaying Recieved/Dialled Calls With Options To Block And Save Contacts.
Message box: Click to send text message to other party.
Send Video, Take Snap Shots And Go Full Screen: Options available for activation
Click on the Speaker and Mic Icons to mute and un-mute local and remote sound.
Click on the Level Bars to adjust microphone and speaker volume by dragging the pointer along the slider bars.