PBX with short messaging service on a telephone display

Claim 1

A method for sending and displaying short messages from at least one data network user to at least one subscriber of a telephonic network, said telephonic network having at least one telephone, said at least one telephone having a display for visually displaying said short messages, wherein said method comprises: holding a dialogue between said at least one data network user and a software agent embedded in the telephonic network, said dialogue providing said telephonic network a content and an address information of each short message, storing said content and address information in a database, and displaying the content of said message on the telephone display of said at least one subscriber wherein the storage of said content and address information comprises: a) generating a first data structure, in which all messages destined to a same extension are linked; b) generating a second data structure, in which each message is separately stored according to its destined extension; c) storing each arriving short message in said second data structure; d) organizing said stored short messages with links between messages destined to the same extension; and e) storing said linked messages and any remaining unlinked messages in said first data structure. 2 .The method according to claim 1 , wherein the short message is sent as a single message, said short message containing content and address information of each short message.