Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Patent
1996-02-09
1998-07-07
Matar, Ahmad F.
Telephonic communications
Plural exchange network or interconnection
With interexchange network routing
379111, 379134, 379196, H04M 1508
Patent
active
057780579
ABSTRACT:
A method of managing the overloading of calls directed to a single telephone number. The method enables Service Control Point to service calls a small percentage of the time during measurement intervals in order to receive Termination Notification messages. The Service Control Point then determines, from the contents of the Termination Notification messages for each measurement interval, the rate of attempted calls and the fraction of the total calls that were incomplete, (i.e., erroneous or received a busy signal) for a telephone number n, and invokes Automatic Code Gapping for the number n where both the attempted call rate and the incomplete calls exceed a predetermined threshold. If the threshold continues to be exceeded in subsequent measurement intervals, a larger gap interval for the Automatic Code Gapping can be set, and the process repeated until the proper gap is found.
REFERENCES:
patent: 4224479 (1980-09-01), Crawford
patent: 5524145 (1996-06-01), Parker
patent: 5570410 (1996-10-01), Hooshiari
patent: 5581610 (1996-12-01), Hooshiari
IEEE/ACM Transactions on Networking, vol. 3, No. 5, Oct. 1995, by "Donald E. Smith", Ensuring Robust Call Throughput and Fairness for SCP Overload Controls, pp. 538-548.
Bell Communications Research Inc.
Giordano Joseph
Hey David
Matar Ahmad F.
Yeadon Loria B.
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