automatic message accounting (AMA)
A service feature that automatically records data regarding user-dialed calls. (188 ) | ||||
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Automatic Message Accounting Definition from Encyclopedia Dictionaries & Glossaries
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Automatic Message Accounting
Automatic Message Accounting (AMA) provides detail billing for telephone calls. When Direct Distance Dialing (DDD) was introduced in the USA, message registers no longer sufficed for dialed telephone calls. The need to record the time and phone number of each long distance call was met by electromechanical data processing equipment.
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