Telephonic communications – Special services – Service trigger
Patent
1989-08-17
1992-06-02
Ng, Jin F.
Telephonic communications
Special services
Service trigger
379213, 379230, H04M 350
Patent
active
051194155
ABSTRACT:
A method of displaying the information on a called party on a calling terminal, and a communication network using this method. In a communication network structuring an inter-station network by using a signalling system capable of transmitting a call control signal including additional information, a user of the called party terminal registers its own information in its exchange beforehand. An activation signal from an originating exchange to a destination exchange is added to a representation indicative of a request type whether a call is made or not made. A call control signal from the destination exchange to the originating exchange, such as an address completion signal, is added to a parameter representative of the registered information. These signals are transmitted between the originating and destination exchanges so that the originating exchange displays the received, registered information of the called party on the calling party terminal.
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patent: 4660220 (1987-04-01), Kraus
patent: 4783796 (1988-11-01), Ladd
patent: 4932042 (1990-06-01), Baral et al.
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Chan Wing F.
Hitachi , Ltd.
Ng Jin F.
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