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Mobile instant messaging and presence service

  • US 20030065788A1
  • Filed: 05/10/2002
  • Published: 04/03/2003
  • Est. Priority Date: 05/11/2001
  • Status: Active Grant
First Claim
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1. A mobile messaging system comprising at least one client device and a server, wherein the client device comprises means for transmitting presence information as presence attributes to the server and means for receiving presence attributes from the server, the presence information being categorized by a plurality of presence attribute types identified by attribute name, and the server comprises means for maintaining presence information based on the received presence attributes, characterized in that the client device comprises means for adding a qualifier to a presence attribute, the qualifier comprising one or more parameters specifying the use of the attribute, and the client device comprises means for processing a received presence attribute according to the qualifier parameters in the received attribute.

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