System for sending group messages

A system for sending group messages in a network infrastructure (10), in which the parties are the sender, preferably an operator, who has means for sending group messages, and several recipients (16.1, 16.21, 16.22, 16.3), each of whom has a terminal (16.1′, 16.21′, 16.22′, 16.3′) for receiving group messages, and in which said network infrastructure (10)

• the recipient (16.1) sets their terminal (16.1′) to listen to the group they select,
• the sender sends an identifier corresponding to the group,
• the terminal (16.1′) of the recipient (16.1) receives the said identifier and sets itself into a state corresponding to the transmission information defined in the identifier,
• the sender sends a group message using the settings stated in the identifier,
• the terminal (16.1′) of the recipient (16.1) receives and announces the arrival of the group message,
• characterized in that the system includes
• a subscription application (19) implemented using HTML or a similar technology in a second network (20) essentially separate from the said network infrastructure (10),
• a group communication interface (12) (Group Communication API) belonging to the network infrastructure (10), and
• a gateway (17), which creates a connection between the group-message subscription application (19) and the said group communication interface (12).