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ADSL (Asymmetric Digital Subscriber Line)
A fast download digital connection installed over a standard telephone line, very common thoughout the world.
AHT (Average Hold Time)
The average length of time between the moment a caller finishes dialing and the moment the call is answered or terminated.
AS (Autonomous System)
A group of networks under mutual administration that share the same routing methodology.
ASP (Application Service Provider)
An independent, third party provider of software-based services delivered to customers across a wide area network (WAN).
ASR (Answer-Seizure Ratio)
The ratio of successfully connected calls to attempted calls (also called 'Call Completion Rate').
ATA (Analogue Telephone Adapter)
Used to connect a standard telephone to a high-speed modem to facilitate VoIP and/or fax calls over the Internet.
ATM (Asynchronous Transfer Mode)
A technology for switched, connection-oriented transmission of voice, data and video. It makes high-speed dedicated connections possible between a theoretically unlimited number of network users and also to servers
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