VoIP call routing information registry including hash access...

Details VoIP call routing information registry including hash access... VoIP call routing information registry including hash access...

2007-07-20

2011-12-06

Phillips, Hassan (Department: 2467)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S353000, C370S356000, C370S401000

Reexamination Certificate

active

08072967

ABSTRACT:
A VoIP call routing information registry including a hash access mechanism. In particular implementations, a method includes receiving a telephone number; computing a hash of the telephone number; accessing a registry wherein the registry comprises a plurality of entries, and wherein each entry comprises a hash of a telephone number and data associated with that telephone number, or a prefix and data associated with that prefix; searching the registry for a matching entry; and until a matching entry is found or the telephone number has been stripped down to a minimum number of digits, stripping the last digit of the telephone number, re-computing a hash of the stripped-down telephone number, and re-searching the registry for a matching entry.

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