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Telco Glossary

Telecom Glossary of Terms

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Acronym Full  Link / explanation  
5ESS Lucent Class 5 The 5ESS Switch is a Class 5 telephone electronic switching system originally developed by Western Electric.
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AAA Authentication, Authorization and Accounting In computer security, AAA commonly stands for authentication, authorization and accounting.
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ADSL Asymmetric Digital Subscriber Line Asymmetric Digital Subscriber Line (ADSL) is a type of digital subscriber line technology.
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AEC Acoustic Echo Cancellation The term echo cancellation is used in telephony to describe the process of removing echo from a voice communication in order to improve voice quality on a telephone call.
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AIN Advanced Intelligent Network The Intelligent Network (IN), is the standard network architecture specified in the ITU-T Q.1200 series recommendations.
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API Applications Programming Interface An application programming interface (API) is a specification intended to be used as an interface by software components to communicate with each other.
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ARPU Average Revenue Per User Average revenue per user usually abbreviated to ARPU is a measure used primarily by consumer communications and networking companie
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ASIC Application-specific integrated circuit (used in core switching) An application-specific integrated circuit, or ASIC, is an integrated circuit (IC) customized for a particular use, rather than intended for general-purpose use.
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ATCA Advanced Telecommunications Computing Architecture An AdvancedTCA boardis 280 mm deep and 322 mm high. The boards have a metal front panel and a metal cover on the bottom of the printed circuit board to limit electromagnetic interference and to limit the spread of fire.
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ATM Asynchronous Transfer Mode Asynchronous Transfer Mode (ATM) is, according to the ATM Forum, "a telecommunications concept defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic.
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AUC Authentication Center The authentication centre (AuC) is a function to authenticate each SIM card that attempts to connect to the GSM core network.
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