Telephonic communications – With usage measurement – Call traffic recording or monitoring
Reexamination Certificate
2006-09-12
2006-09-12
Tieu, Binh K. (Department: 2614)
Telephonic communications
With usage measurement
Call traffic recording or monitoring
C379S350000, C370S522000
Reexamination Certificate
active
07106842
ABSTRACT:
A system and method for detecting cut-off of calls in a switching system records data corresponding to connection of a call in a first memory, records the call connection data in a second memory, and then at a later time and, for example, in response to a call release request compares the data in the two memories corresponding to the call. If the data does match, it is determined that the call has been cut-off. The first memory may be located in a switching unit and the second memory may be located in a processor which controls the switching unit. The switching unit may be a time switch or a space switch. Once a call cut-off is detected, the processor transmits information notifying an operator of the cut-off. The system and method represents an improvement over existing systems in terms of increased reliability and ease of repair and maintenance of system components.
REFERENCES:
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patent: 5450485 (1995-09-01), Hamilton
patent: 5995494 (1999-11-01), Horikawa
patent: 6549546 (2003-04-01), Park
patent: 2001037046 (2001-05-01), None
patent: 2001045609 (2001-06-01), None
Fleshner & Kim LLP.
LG Electronics Inc.
Tieu Binh K.
LandOfFree
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