Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent
1992-05-06
1994-07-26
Chin, Stephen
Telephonic communications
With usage measurement
Call charge metering or monitoring
379113, 379126, 379229, 379230, 379243, H04M 1500, H04M 700, H04M 300
Patent
active
053331842
ABSTRACT:
The standard exchange message interface (EMI) message record generated for interexchange telephone toll calls is enhanced via the addition of a primary interexchange carrier (PIC) indicator, whose value provides an indication as to whether a terminating subscriber has a particular interexchange carrier as his/her PIC. The PIC indicator may be used by the interexchange carrier when bills are rendered for its subscribers--for example, to provide different billing treatment for calls that were made over that carrier's network to terminating subscribers whose PIC is, in fact, that very carrier, as opposed to calls that were made to subscribers with a different PIC.
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Doherty Gerard P.
Lanzillotti Nicholas J.
Paulus Conrad J.
AT&T Bell Laboratories
Chin Stephen
Shankar Vijay
Slusky Ronald D.
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