Telephonic communications – Special services – Service trigger
Reexamination Certificate
1997-10-29
2001-01-16
Zele, Krista (Department: 2742)
Telephonic communications
Special services
Service trigger
C379S219000, C379S220010, C379S142030
Reexamination Certificate
active
06175620
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is generally concerned with services made available to users of a telephone network by a server connected to said telephone network.
2. Description of the Prior Art
Telephone services are provided by a server external to the central offices of the telephone network and connected to the network via ISDN (Integrated Services Digital Network) interfaces. Services already offered to digital users and, in some cases, to analog users by the ISDN, for example call forwarding, calling line identification presentation, call filtering, ringback, etc., can be provided differently by forwarding calls to a server capable of completing connections between user terminals. A method of the above kind, like that described in the aforementioned patent application, has the advantage of being easily applicable to all types of digital or analog user terminal.
The present invention is more particularly concerned with the use by the same user of a service utilizing a server external to the network and the complementary ISDN calling line identification presentation service, known as the “CLIP service”, utilizing CCITT No. 7 type signalling.
The prior art does not provide any method for simultaneously offering to a user the “ringback” service, for example, employing a server external to the central offices of the telephone network and completing connections, and the “CLIP” service. When a calling user terminal sets up a call to a called user terminal having a screen and subscribing to the “CLIP” service, via a server, i.e. at the server by joining a call between the calling terminal and the server to a call between the server and the called terminal, the number shown on the screen of the called terminal is that of the server and not that of the calling terminal.
OBJECT OF THE INVENTION
The main object of this invention is to remedy the aforementioned drawback by providing a method capable of rendering the above services compatible in a simple and practical manner that is transparent to the user.
SUMMARY OF THE INVENTION
According to the invention, a telephone service using a server designated by a telephone number and connected to a telephone network is made compatible with the telephone network and a calling line identification presentation service. The server joins a first call between a calling user terminal and the server to a second call between the server and a called user terminal. A user of the called terminal has previously subscribed to the calling line identification presentation service. Compatibility is achieved by transmitting the telephone number of the calling terminal in a request to set up the first call between the calling user terminal and the server through the telephone network. The request succeeds a call from the called terminal to the server. During the call from the called terminal to the server, the server stored in memory the telephone number of the called terminal as the terminal that most recently called the calling terminal. The server introduces the stored telephone number of the calling terminal as if the stored telephone number were the telephone number of the server. The server introduces the stored telephone number of the calling terminal into a request to set up the second call in response to the request to set up the first call in the server. The request to set up the second call is transmitted with the telephone number of the calling terminal from the server to the telephone network so that the telephone number of the calling terminal is transmitted from the telephone network to the called terminal.
The transmission of the telephone number to the called terminal is in conformance with the calling line identification presentation service.
Typically, the telephone number of the calling terminal is transmitted from the server to the telephone network as a supplementary identification number of the server. The telephone network does not verify this type of number and so the calling line identification presentation service supplies it to the called terminal from the telephone network as if it were the server number.
REFERENCES:
patent: 5396548 (1995-03-01), Bayerl et al.
patent: 5511115 (1996-04-01), Bayerl et al.
patent: 5590184 (1996-12-01), London
Chemin Francois
Rouge Thierry
Deane, Jr. William J.
France Telecom
Lowe Hauptman & Gilman & Berner LLP
Zele Krista
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