Abstract: Publishers inject messages containing geospatial data into a content routed network. The subscribers pre-register geospatial data defining an arbitrary geographic region of interest with their subscriptions. The messages are delivered to interested subscribers based on a comparison of the content data and the geospatial data contained in the messages with the corresponding data associated with said pre-registered subscriptions.

Abstract: A mobile telephone terminal provides a user with a selectable option to transfer a telephone call to an instant messaging session and to transfer an instant messaging session to a telephone call. A presence attribute indicator for a first party is displayed, in a mobile telephone application, with an entry associated with the telephone number of the first party. A user, while displaying an entry for a party in a mobile telephone application, has a selectable option for initiating instant messaging with the party. The mobile telephone provides a customised menu of selectable options for initiating communication. The menu is dependent upon received presence attribute information. A calendar application can store the content of an instant messaging dialaogue in an appointment record.