Telecommunications Glossary - tecweb.org

Telecommunications Glossary /131 Segovia, San Clemente, CA 92672(949) 369-3867 file can be found on the TEC website Glossaryfrom "A Technical Guide to Teleconferencing andDistance Learning," 3rd editionA2N59B7O62C13P64D22Q70E28R71F31S7 4G36T83H38U88I42V90J46W93K48X95L49Y95M52 Z95 Telecommunications Glossary /2 AAccess Channels: Dedicated channels giving nondiscriminatory access to a localcable system by the public, government agencies or educational institutions. ACCUNET Switched Digital Services: High-speed dial-up digital data services offeredby AT&T for full duplex digital transmission at speeds of 56, 64, 384 and 1536 include data, voice and video services. Acoustic Coupler: A device that allows a conventional telephone handset to feed itssignal into a modem, as opposed to direct couplers, which feed themodulated/demodulated signal directly into the phone Echo Canceller: All speakerphones have some form of adaptive echocanceller that produces a synthetic replica of the potential echo to subtract from thetransmit audio.

Telecommunications Glossary/5 ATM - Asynchronous Transfer Mode: ATM switching protocol can handle all types of traffic - voice, data, image, and video. Attenuation: The difference between transmitted and received power due to loss through equipment, lines, or other transmission devices; usually expressed in decibels.

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