Device for reading status messages of a payphone
作者： Willhaus Werner Dipl Ing , Preikschat Gerd Dipl Ing
DOI:
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摘要: A reading unit (AFE) of a telephone fault clearance station (FeESt) is connected via line (FL) to payphone (MU) for status message. request signal generated by the applied this purpose evaluation (SAW) which process and functional control (SE). When has been detected in current message transmitted (SE) (FeESt).
lens.org 参考文章(2)
Huissoud Bernard, Coin-operated telephone with a microprocessor ,(1983)
Schmidt Heinz, Hutt Hans, Method for transmitting fault messages from a telephone PABX system to a service station ,(1982)