Method for preventing overload condition in a circuit...

Details Method for preventing overload condition in a circuit... Method for preventing overload condition in a circuit...

2006-01-17

2006-01-17

Tieu, Benny Q. (Department: 2642)

Telephonic communications

Special services

Repetitive call attempts

C379S112040, C379S221030

Reexamination Certificate

active

06987848

ABSTRACT:
A method for alleviating congestion problems in prior art networks delays provision of dial tone signals to terminals that are, likely, carrying out a re-dial attempt in excess of a preselected number of re-dial attempts. A determination that the terminal seeking to establish a connection is likely carrying out a re-dial attempt may be based on numerous factors, such as the time since the last time the terminal desired to establish a call, the duration of the last call, etc. The delay that is imposed is, advantageously, sensitive to the number of times the terminal has attempted a re-dial, and on other conditions, such as the cause of the failure to establish a connection, network congestion conditions, etc. In imposing the dial tone delay, identities of the terminals that are to receive a delayed dial tone are placed in a FIFO queue.

REFERENCES:
patent: 4497979 (1985-02-01), Phelan
patent: 4924500 (1990-05-01), Lewis et al.
patent: 5325426 (1994-06-01), Held
patent: 5402478 (1995-03-01), Hluchyj et al.
patent: 5841848 (1998-11-01), Dunn
patent: 6104786 (2000-08-01), Gibilisco et al.
patent: 6570974 (2003-05-01), Gerszberg et al.

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