Prepaid long distance call system and method

Details Prepaid long distance call system and method Prepaid long distance call system and method

2006-11-07

2006-11-07

Tran, Quoc (Department: 2614)

Telephonic communications

With usage measurement

Call charge metering or monitoring

C379S144010, C379S115010, C379S121010, C379S221020

Reexamination Certificate

active

07133508

ABSTRACT:
A subscriber's line is associated with a prepaid long distance account. When the subscriber attempts a long distance call, it is determined from the dialed digits whether the attempted call is a long distance call. If a long distance call is attempted, the subscriber's prepaid account is checked to determine whether it has any remaining credits. If no credits are remaining, the subscriber is so informed, and the call is disconnected. If the subscriber has credits remaining, the call is connected as long as credits are remaining in the prepaid account.

REFERENCES:
patent: 5621787 (1997-04-01), McKoy et al.
patent: 5781620 (1998-07-01), Montgomery et al.
patent: 6137872 (2000-10-01), Davitt et al.
patent: 6195422 (2001-02-01), Jones et al.
patent: 6333976 (2001-12-01), Lesley
patent: 2001/0028705 (2001-10-01), Adams et al.

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