Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent
1993-01-19
1996-05-07
Chin, Stephen
Telephonic communications
With usage measurement
Call charge metering or monitoring
379111, 379112, 379113, 379115, 379121, 379125, 379128, H04M 1500
Patent
active
055154255
ABSTRACT:
Interexchange carriers make their rate information for long-distance service available in a database. PBXs and telephone central offices access that rate information using ISDN and/or SS7 signaling and use it as a basis for determining which carder to use at any given time in the routing of a call. Such accessing may be carried out on a call-by-call basis. Or a carrier's schedule of rates can be stored locally in the PBX or local switching office, thereby obviating the need for a database query for every call.
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Belanger David G.
Penzias Arno A.
Young Joel K.
AT&T Corp.
Chin Stephen
Dinella Donald P.
Shankar Vijay
Slusky Ronald P.
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