Patents Represented by Attorney Ronald P. Slusky

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  • Telecommunications system with active database
    Patent number: 5515425
    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.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: May 7, 1996
    Assignee: AT&T Corp.
    Inventors: Arno A. Penzias, David G. Belanger, Joel K. Young