Microsoft Technology Licensing, LLC

Cisco Technology, Inc.

Tropo, Inc.

Neil Stratford

Wei P Chen

Richard John Black

Paul Barham

Zhiyu Liu

Xiaopu Zhu

Jason Scott Goecke

Jose Maria De Castro, Jr

Peter Bernard Key

A communication application server is provided with a unified framework for call control and media control. The framework supports a unified API having class objects and functions conforming to a telephony object model. The class objects are invoked and manipulated by a finite set of commands and an application program essentially issues a series of such commands to operate the communication application server. More particularly, an API server on the communication application server defining a messaging API protocol enables an application script to pass commands remotely to the communication application server to operate it. This allows application scripts to be processed remotely by appropriate scripting engines. In this way, application scripting is decoupled from the operation of the communication application server, which only needs to focus on providing basic communication services.

System and method for telephony and communication services with message-based API

A method and system are presented for determining the loading and capacity on a variable capacity channel by measuring the times at which packets are enqueued for transmission, and have their transmission completed, or by measuring these times in addition to the arrival times of the packets. The times may be measured using a device driver or other operating system component. The measurement may be performed in a centralized or distributed fashion for multi-access or point to point channels.

Method and system for measuring load and capacity on a variable capacity channel

A method and system for avoiding network congestion by measuring network load to adjust a rate at each source. The load (e.g., as a price value) is provided to network traffic sources, which adjust their flows based on a per-flow weight (willingness to pay). The load may be determined in-band by routers or out-of-band by an observer node. A load value (e.g., as a price) is increased or decreased based on the actual load or an estimate based on the actual load. The sources obtain the load value and control the output rates per flow based on each flow's associated weight (willingness to pay), e.g., as set by an administrator. Further, two classes of applications are enabled by allowing certain applications to ignore price.

System and method for controlling network demand via congestion pricing

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Ely, United Kingdom

Neil Stratford