Most definitions found in this glossary are adapted with permission from this text book:

Maheu, M., Whitten, P., & Allen, A. (2001). eHealth, Telehealth & Telemedicine: A Guide to Startup and Success. New York: Jossey-Bass.

Browse the glossary using this index

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National Committee for Quality Assurance (NCQA)

A private, nonprofit organization dedicated to assessing and reporting on the quality of managed care plans.
Entry link: National Committee for Quality Assurance (NCQA)


Interconnected communication equipment used for data and information exchange. Networks can be classified by size (LAN, MAN, WAN) or by type of information carried (TCP/IP), who uses them (private or public), or how they are connected (switched or dedicated, using fiber optics or coaxial cable).
Entry link: Network


Discussion groups on the Internet that allow users to submit and read other participants’ submissions on a particular subject of mutual interest. Also referred to as the Usenet.

Entry link: Newsgroups


Proof that only the signer could have created an electronic signature.
Entry link: Nonrepudiation


Originating Site (see also Spoke Site or Referring Site)

Is the location of the client/patient receiving a telehealth service.
Entry link: Originating Site  (see also Spoke Site or Referring Site)

Originating Site Fee (see also Facility Fee)

Is a fee paid to the originating site to compensate for the cost of facilitating a telehealth visit.

Entry link: Originating Site Fee (see also Facility Fee)



A basic message unit for communication in packet-switched networks. A single file may be broken up into packets for transmission, with each packet finding its own path to the destination, where the packets are reassembled. Most information transmitted over the Internet is in the form of packets.
Entry link: Packet


Any externally connected device attached to a videoconferencing or telemonitoring system to augment its communication or medical capabilities. Examples include electronic stethoscopes, otoscopes, ophthalmoscopes, dermascopes, graphic stands, and scanners.
Entry link: Peripheral


Pip stands for "Picture-in-a-picture" and allows you to see yourself in a small screen while having contact with your client. This allows you to see how you appear to whomever you are addressing. If you see half your face, just your armpit, or another person in your room -- this is exactly what your client sees when she speaks with you.
Entry link: PIP


The smallest and most fundamental picture element of a digital image. The greater the number of pixels in an image, the higher its resolution.
Entry link: Pixel

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