Admissions control in a connectionless communications network

Details Admissions control in a connectionless communications network Admissions control in a connectionless communications network

2008-07-08

2008-07-08

Pham, Chi (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S338000, C370S392000, C370S468000

Reexamination Certificate

active

07397763

ABSTRACT:
A method of providing call admission control which does not require using MIDCOM protocol methods, Packetcable protocols or COPS-RSVP s approaches is described which is simple to implement, cost-effective and which is able to deal with particular situations such as conference calls. Each link in a communications network over which it is required to perform call admissions control is provided with a middlebox connected at each end of that link such that admissions control can be carried out at one end of the link. Call services are provided by Call Servers, each of which has access to a database containing pre-specified information about all middleboxes in that call server's realm. The database also has information about maximum bandwidths for the link associated with each middlebox. The call servers are used to keep a running tally of the amount of VoIP call bandwidth associated with each middlebox on the edge of a low-bandwidth link, and to accept or refuse calls on the basis of the bandwidth information on a per-call basis.

REFERENCES:
patent: 2003/0123388 (2003-07-01), Bradd

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