H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2282929
A method and apparatus for reduction of call setup rate in an ATM network are described. The method and apparatus are particularly useful in ATM networks used for the transfer of bearer traffic between telephone switching offices. The method involves caching a number of switched virtual circuits (SVCs) between edge interfaces to the ATM network. A cache connection is an emulated circuit between two edge interfaces that is available and idle. The apparatus provides a central policy manager which computes and distributes cache policies to cache managers located in the edge interfaces. The cache managers manage pools of cached SVCs established between two edge interfaces. The method and apparatus reduces the number of connection setup requests sent to the ATM switches. The advantage is the ability to use ATM switches which have slow connection setup rates to provide commercially acceptable telephone services in an efficient manner. The method can also be used with fast ATM switches when they become available to balance the use of bandwidth and switch resources to reduce overall cost.
Constantinof Cristian M.
Li Mingxing
Mikhailov Vladimir
Vaughan Brian J.n.
Nortel Networks Corporation
Nortel Networks Limited
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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