作者: Reich L , Graham P
DOI:
关键词: Telephone call 、 Cumulative cost 、 Cost database 、 Display device 、 Call management 、 Computer science 、 Signal 、 Call control 、 Real-time computing 、 Call volume
摘要: Apparatus for automatically computing and recording the cost of a long-distance telephone call including register cumulatively indicating on digital display being made responding to computer having an input data time period wherein recorder operate in response signal information taken directly from telephone. Additionally, elapsed indicator digitally displays cumulative records all calls made.