Research in Motion Corporation

Cisco Technology, Inc.

Blackberry Corporation

Nortel Networks Corporation

Bruce Eric Buffam

Connor Patrick O'Rourke

Robert William Brown

Mieczyslaw Juliusz Surazski

Diana M Chapman

Paul P Beaubien

Pierre Cousineau

Fotis Xipolatakis

Al L Bryenton

Connor Patrick O'rourke

A method for content-based presence communication entails receiving presence information, storing the presence information in any arbitrary data format, validating a subscription request to subscribe to the presence information by determining if information contained within the subscription request represents an authorized subscription relationship, and communicating the presence information when the presence information matches the subscription expression.

Content-based publication-subscription system for presence information

A method, performed by a registrar of a presence service, for registering a user with a presence service. The method entails negotiating a key with a client device operated by the user in order to establish an encrypted communications channel between the client device and the registrar via a proxy node, authenticating the user by exchanging messages through the encrypted communications channel and through a separate e-mail channel, binding a universally unique identifier identifying the user with one particular function node that is interposed between the proxy node and a publish-subscribe subsystem of the presence service and creating a user profile for the user and storing the user profile in a persistent data store.

Method and system for registering a presence user with a presence service

A method for managing a subscription to content-based presence information entails receiving a subscription-suspension message from a device at a presence service, identifying the subscription associated with the subscription-suspension message, suspending the subscription, and sending a response from the presence service to the device to notify the device that the subscription has been suspended. Suspending the subscription may involve accumulating notifications in a persistent data store. The method may further involve receiving a subscription-resumption message at the presence service to resume the subscription that was suspended.

Subscription management for a content-based presence service

A method and apparatus for dynamic bandwidth management for voice traffic in a digital communications network is disclosed. In one embodiment, a method for use in a digital communications network comprises checking a multiplexed connection's bandwidth capacity to carry a call over a link; and overflowing the call onto a non-multiplexed connection, when the multiplexing connection's bandwidth is insufficient to carry the call.

Method and apparatus for dynamic bandwidth management for voice traffic in a digital communications network

Multiple connections between switches that share the same Quality of Service (QoS) requirements are multiplexed onto a single virtual connection or switched path. The switched path may be established using a known standard or proprietary protocol, or even without knowledge of the underlying protocol. Provisioning and management software provided on the switches create originating and destination end points. When the network operator provisions an end point, a switched path call setup request is made to a networking interface which establishes a connection using a selected routing system through the network having the provisioned characteristics, such as bandwidth and QoS, of the switched path.

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Woodlawn, Canada

Bruce Eric Buffam