| 摘要 |
The invention relates to mobile messaging and presence services. According to one aspect of the invention, a client device of the mobile messaging system adds a qualifier to a presence attribute, the qualifier comprising one or more parameters specifying the use of the attribute. A client device receiving a presence attribute processes the received presence attribute according to the qualifier parameters in the received attribute. Another aspect of the invention is the showing of how to assemble and store presence items with names, attributes and values in a single presence set within a role having an associated authorization group of members that have the right to subscribe to the whole or part of the presence set of the same role.
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