Scalable gatekeepers in an internet telephony system and a...

Details Scalable gatekeepers in an internet telephony system and a... Scalable gatekeepers in an internet telephony system and a...

H - Electricity

04

L

H04L 12/24 (2006.01) H04L 29/02 (2006.01) H04L 29/06 (2006.01) H04L 29/12 (2006.01) H04M 7/00 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2285870

An Internet Protocol (IP) telephony system manages Gatekeeper subscriber load by partitioning Gatekeepers and by distributing subscriber load during the Gatekeeper discovery and registration process. The IP telephony system includes a plurality of Gatekeepers, each of which may include a Registration Load Management Unit (RLMU). A RLMU may also be resident upon one or more Domain Name Servers (DNSs) servicing the IP network(s) over which the IP telephony system operates. In a first embodiment a plurality of Gatekeepers are organized without a hierarchy structure. In such case, the plurality of Gatekeepers are made up of a plurality of Gatekeeper service nodes and a plurality of Gatekeeper Database nodes. The Gatekeeper service nodes provide the Registration, Admission, Status, Location, Call Set Up and other operating functions of the Gatekeeper while the plurality of Gatekeeper Database nodes store subscriber information. Each of the Gatekeeper service nodes has access to each of the plurality of Gatekeeper Database nodes. Subscriber load is assigned to the plurality of Gatekeeper service nodes by the RLMU located in the DNS. In a second embodiment, a plurality of Gatekeepers are organized in a hierarchy structure with a Root Gatekeeper at the top of the hierarchy and a plurality of Gatekeepers residing below the Root Gatekeeper in single or multiple levels of hierarchy. All Registration requests are directed to the Root Gatekeeper. Upon receipt of a Registration request, a RLMU in the Root Gatekeeper selects one of the Gatekeepers it manages to service the subscriber. Each of the plurality of Gatekeepers provides both operating and database functions. Thus, each of the Gatekeepers stores its own registration data. The Root Gatekeeper tracks the assignment of subscribers to Gatekeepers.

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