The method involves checking the presence of an entry relative to appointment schedule of the user in a corporate social network, and extracting information from the entry. The presence of an identifier in the network is checked, for the caller (5), and the existence of professional relations between the caller and the user, is checked. The personalized announcement (9) is generated to allow the caller to access the extracted information according to the relations existing between the caller and the user. An independent claim is also included for a voice messaging system of a unified communication system integrated in a corporate social network.
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