tion Criteria Making and Receiving Calls Does the product offer "voice-call first" (to add a video connection)? Does an on-line directory permit "scroll & click" to place a video call? Is an incoming caller's ID captured and displayed? Is an incoming caller's number automatically stored for callback (ISDN)? Audio Sub-system In-band or out-of-band audio? Are microphone and speakers included? Is microphone built in to the camera? Is a headset or handset included? Audio/video synchronization (subjective evaluation of) Audio-delivery quality (subjective evaluation of microphone) Audio-receive quality (subjective evaluation of speakers) Camera Features Does the camera offer pan/tilt/zoom? Can camera swivel in order to act as a document camera? Choices of focal lengths? Color or black and white? Does the camera offer brightness, contrast, color, and tint adjustments? Does the camera include an audio/video shutter for privacy? Data Collaboration / Graphics / Document Conferencing Features & Support T.120 compliance? Document conferencing / data collaboration? Application viewing / screen sharing? Bit-mapped whiteboard (clipboard) capabilities? File transfer? Can the user control the flow of files during a file transfer? If so, how? Can conferees prevent network floods during multipoint file transfers? Chat (message pad) features? Annotation tools (markers, highlighters, pens, etc.)? Drawing tools (inclusion and sophistication of)? Pointing tools? Slide show capabilities? Video Communication: the Whole Picture Screen-capture and storage as "photo"? Are full- or partial-screen video "freeze frame" snapshots offered? What format are snapshots stored in? Intranet / Internet Adaptations Is the client browser-based? RSVP client capabilities? UDP (vs. TCP) sessions? Does the system support the User Location Service (IP-network)? Is a user automatically logged onto the ULS when they sign on to their computer? Multipoint Capabilities Does the system support multipoint conferencing? How many parties? What conference management fe