Communication charge management system

Details Communication charge management system Communication charge management system

1998-08-19

2000-11-21

Nguyen, Duc

Telephonic communications

With usage measurement

Call charge metering or monitoring

379111, 379132, 379171, 379156, H04M 1500

Patent

active

061513881

ABSTRACT:
A communication charge management system includes one or more master telephone sets serving as managing telephone sets, one or more slave telephone sets serving as telephone sets managed by the master telephone sets, and a charge informing unit. The charge informing unit informs the master telephone set of the communication charge in communication of the slave telephone set.

REFERENCES:
patent: 4264956 (1981-04-01), Delaney
patent: 5222122 (1993-06-01), Hamilton et al.
patent: 5265155 (1993-11-01), Castro
patent: 5960416 (1999-09-01), Block

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