Arrangement for intentionally blocking telephone calls to predef

Details Arrangement for intentionally blocking telephone calls to predef Arrangement for intentionally blocking telephone calls to predef

1989-11-30

1992-04-28

Dwyer, James L.

Telephonic communications

Call or terminal access alarm or control

At switching center

379188, H04M 300

Patent

active

051094088

ABSTRACT:
A call processing embodiment where customers are offered, in addition to the conventional office dialing plan, a special dialing plan where received numbers are processed such that a query of a database is defined when a prespecified access code, e.g., *66, is received, for example followed by a destination number, but where call blocking is defined for a predefined plurality of destination numbers, e.g., all destination numbers beginning with 976 or 1-900 or all destination numbers beginning with 1, when such numbers are received without the prespecified access code. Illustratively, the database query may result in the customer being prompted for a personal identification number (PIN) and accordingly 976 or 1-900 access is thereby limited to those knowing the PIN. The database may perform other call screening and call management operations such as time of day or day of week screening or limiting the number or cost of 976 calls in a given time period.

REFERENCES:
patent: 3786196 (1974-01-01), Gresham
patent: 4064372 (1977-12-01), Altenburger
patent: 4162377 (1979-07-01), Mearns
patent: 4232199 (1980-11-01), Boatwright et al.
patent: 4277649 (1981-07-01), Sheinbein
patent: 4346264 (1982-08-01), Sharvit
patent: 4348554 (1982-09-01), Asmuth
MCI Execunet Bulletin, Dec. 24, 1975.

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