Cisco Technology, Inc.

Claus Dahm

Rajesh Kumar

Hisham Sami Abdelhamid

Joseph Roy Stone

Sreekanth Gangadharan

A method and system for establishing a call between two endpoints residing on different media gateways in a decomposed voice over packet architecture. Cluster attributes identifying alternate bearer possibilities are exchanged between media gateways as part of capabilities negotiation which occurs during call setup conducted by an external call control element over a core network. The media gateways analyze the cluster attributes to determine whether bearer possibilities exist apart from the core network. If an alternate bearer possibility exists, the alternate is employed and the call is established via the alternate bearer directly between the media gateways, thus bypassing the core network.

Method and system for bypassing a core network in establishing a call between endpoints on different media gateways

A system, method and apparatus for controlling a network post-demultiplexing function such as dejittering is described. The method includes accessing data relating to a multiplexing function of said network. The data is processed according to a hysteresis property relating to the multiplexing function. Based on this processing, a jitter value associated with said multiplexing function is estimated, which predicts a worst-case jitter associated with the multiplexing function. A signal processing function related to the post-demultiplexing function is adjusted according to the estimated worst-case jitter value. In response to such adjustment, the buffering function adapts to anticipate a change in the worst-case jitter.

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Claus Dahm