Private branch exchange apparatus and accounting process method

Details Private branch exchange apparatus and accounting process method Private branch exchange apparatus and accounting process method

2005-01-25

2005-01-25

Kuntz, Curtis (Department: 2643)

Telephonic communications

With usage measurement

Call charge metering or monitoring

C379S114010, C379S128000

Reexamination Certificate

active

06847709

ABSTRACT:
Each time the time in a timer is re-set, a control section overwrites a difference integration value corresponding to the amount of the change from a reference value “0” in an registration memory of a memory section. When a call is sent from an extension to an outside line, the control section first reads out the difference integration value from the registration memory and stores on a management table the read-out difference integration value and call beginning time information in association with the call-sending extension. If the call between the extension and the outside line is finished, the control section calculates a call charge associated with the call-sending extension, on the basis of call end time information, the difference integration value stored in the registration memory, and the call beginning time information and difference integration value associated with the call-sending extension, which are registered on the management table.

REFERENCES:
patent: 4072827 (1978-02-01), Oman
patent: 5343517 (1994-08-01), Bogart et al.
patent: 5528621 (1996-06-01), Heiman et al.
patent: 5661782 (1997-08-01), Bartholomew et al.
patent: 62-12262 (1987-01-01), None
patent: 4-014946 (1992-01-01), None
Tominaga Yoshinobu et al; “Call Charging System”, Patent Abstracts of Japan of JP 57072463 A, May 6, 1982.
Sakagami Koichi; “Electronic Exchange With Call Time Measuring Instrument”, Patent Abstracts of Japan of JP 62012262 A, Jan. 21, 1987.

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