The present invention discloses a method and a system for using presence proxies to group
presence notifications. In the invention, a presence server can accept, manage, and …

(57) ABSTRACT A Presence Server receives presence information associated with a
Presentity, wherein the presence information com prises one or more presence attributes …

A method and apparatus are provided that evaluate a number of different sources of
presence information to determine a presence status of a user. The presence status of a …

BACKGROUND 0001. In today's presence systems, presence information about a user or a
device provides some useful information about the user or the device. For example, the …

Automatic Subscription to presence services is achieved using a communications manager
within a presence system. The communications manager is capable of detecting the occur …

(57) ABSTRACT A presence communication system capable of efficiently reducing the
number of messages exchanged between pre sentities and watchers, thereby preventing …

BACKGROUND 0002. The IP Multimedia Subsystem (IMS) is an architec ture based on the
Session Initiation Protocol (SIP) which creates a common platform for enabling a broad …

Scalable presence distribution system and method are described. In one embodiment, a
presence distribution system comprises a plurality of presence servers and a centralized …

0004 Presence-based interactive communication ser vices are callee-centric, where callees
(presentities) publish, in real time, their presence information (such as, the avail ability …

The preset invention discloses presence proxies that independently handle local presence
services for a Sub-net work and that route non-local presence services to a presence server …