• Amplifier
  A device that increases a signal’s strength.
• CAT5
  Cable also called unshielded twisted pair cable (UTP). The type of cable used for Ethernet 10MB and 100 MB LAN connections.
• Channel
  The frequency band on a television to which a particular video program is assigned.
• Closed-circuit television (CCTV)
  In some on-demand systems, CCTV is synonymous with the term video on demand (VOD): “A viewer’s ability to request and receive recorded video and sound programming through a television set.”
• Coaxial cable
  Cable that has an axial design. It is used for high frequencies, such as those in the VHF and UHF television transmission bands.
• RG-11 coaxial cable
  A type of coaxial cable designed for connectivity in the television-chan­nel spectrum. It consists of a single, solid copper center conductor surrounded by low-loss insulating foam, which is enclosed in a wire mesh shield and an outer insulating layer.
• Combiner
  A component that pools various video channels to produce a single broad­band video signal for distribution throughout a hospital facility.
• DTMF
  Developed at Bell Labs, now the world standard for analog telephone dialing. Incorporates an array of discrete voice frequencies that are combined in sets of two to produce “multi-frequencies” that are unique to each of the 12 keys on the telephone keypad.
• Electromagnetic compatibility (EMC)
  The ability of various kinds of electromagnetic-field-generating devices to coexist without one device causing interference with another device.
• Graphical user interface (GUI)
  A user-friendly interface based on graphics (icons and pictures and menus) instead of text; uses a mouse as well as a keyboard as an input device.
• HDD
  Hard disk drive.
• Host computer
  The central component of an on-demand system that makes possible communication, education, messaging, and on-demand video.
• Hot swap
  A feature that lets critical components of the system be changed while the system is running without affecting system operation.
• Marquee
  Specialized videos that contain information specific to your medical facil­ity. Marquees play when no other videos are playing and they are interrupted when another video begins to play.
• Modulator
  A component that selectively channels video and audio information from the video streaming device (VSD).
• M2P
  The file extension Canopus DVStorm used for digitally encoded files.
• MPEG-1
  Standard specification targeted for use with computers, computer games, and set-top boxes.
• MPEG-2
  Standard targeted for use in high bandwidth broadcast applications.
• Operating system (OS)
  The software that operates the computer by providing routines and instructions that determine how the computer behaves under all operating conditions.
• Prescriptive play
  A program that a healthcare provider orders for a patient. The patient receives an automated call with instructions on how to view the program.
• Scheduled play video
  A video scheduled to play at specified time.
• Uninterruptible power supply (UPS)
  An alternate, battery-operated power source that provides temporary power when the main power source stops working.
• Unshielded twisted-pair cable (UTP)
  The type of cable used for Ethernet 10 MB and 100 MB LAN interconnections. This cable is sometimes referred to as CAT5 cable.
• Video encoding
  The process of converting analog video signals to compressed digital video,
• Video file server
  Stores and plays video content on demand or as scheduled.
• Video on demand (VOD)
  A viewer’s ability to request and receive recorded video and sound programming through a television set.
• Video streaming device (VSD)
  The video file server that houses the digital video files7

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