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Network

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IEEE

Institute of Electrical and Electronic Engineers

Image Processing

Process of modifying data representing an image, typically to ameliorate diagnostic interpretation, using algorithms.

Image Technology

The component of computer applications that transform documents, illustrations, photographs, and other images into data that computers and special-purpose workstations are capable of storing, distributing, accessing, and processing.

Informatics

The use of computer science and information technologies to the management and processing of data, information and knowledge.

Integrated Circuit

A solid state microcircuit comprised of interconnected semiconductor components diffused into a single instrument.

Interactive Video/Television

This is analogous with video conferencing technologies that allow for two-way, synchronous interactive video and audio signals for the purpose of delivering telehealth, telemedicine or distant education services. It is often referred to by the acronyms – ITV, IATV or VTC (video teleconference).

Interface

The connection between two devices; applies to both hardware and software.

Internet

The most formidable global network of business and personal computers connected through regular and high-speed telephone lines. It needs specific types of software to access it, such as a Web browser. It links computers and computer networks from colleges and universities, government agencies, institutions, and commercial organizations worldwide.

Internet Protocol

Based on the Web site's technical address, this is another way for accessing Web sites. The formal for this protocol is a four-part number, such as 207.87.223.39.

ISDN

Integrated Services Digital Network. A completely digital telephone system which permits the integrated transmission of voice, video, and data to users at a higher speed than would be possible over typical telephone lines. It also provides connections to a universal network. It currently requires special installation and equipment.

ISDN Basic Rate Interface (BRI)

This is an ISDN interface that provides 128k of bandwidth for videoconferencing or simultaneous voice and data services. Multiple BRI lines can be linked together using a multiplexer  to achieve higher bandwidth levels. For instance, a popular choice among tele-health networks is to combine 3 BRI lines to provide 384k of bandwidth for video-conferencing. It should be noted that BRI services are not available in some rural locations. One should check with their tele-communications providers on the availability of BRI service before ordering videoconferencing equipment that uses this type of service.

ISDN Primary Rate Interface (PRI)

This is an ISDN interface standard that operates using 23, 64k channels and one 64k data channel. With the proper multiplexing equipment the ISDN PRI channels can be selected by the user for a video call. For instance if the user wants to have a videoconference at 384k of bandwidth then they can instruct the multiplexer to use channels 1 through 6 (6 x 64k = 384k). This is important because the user typically pays charges based on the number of 64k channels used during a videoconference. The fewer channels used to obtain a quality video signal the less expensive the call.

ISO

International Organization for Standardization. Comprised of national bodies elected to set standards, this non-treaty organization is involved in illustrating norms for all communications fields except electrotechnical.

ISO/OSI

International Organization for Standardization/Open Systems Interconnections. The typical reference archetype for local area network (LAN) architecture. The model is made up of several hierarchical levels (physical, data link, network, transport, session, presentation, and application) that address LAN design, from the specification of the physical transmission medium to the abilities of user interaction with LAN services.

ITU

International Telecommunications Union. This union, governed by a treaty and comprised of government telecommunications agencies, is responsible for setting standards for radio, telegraph, telephone, and television.

ITU-T

International Telecommunications Union Consultative Committee for Telecommunications. Formerly the Consultative Committee on International Telephone and Telegraph (CCITT). An international agency responsible for developing standards for telecommunications, including FAX and video coder-decoder devices.