Telephone interface call processing system with call selectivity

作者: Ronald A. Katz

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摘要: For use with a public telephone network CO incorporating vast number of terminals T1-Tn, system CS limits and controls interface access to implement voice-digital communication for statistical processing. The accommodates calls in different modes, e.g. "800", "900" or area code incorporates qualifying apparatus restrict against caller misuse. Alternative calling modes are used reach an facility that also affords some control based on terminal identification, as by ANI equipment.