EP1135922A1

EP1135922A1 - Method for setting up a communication between two terminals via internet through a call server unit, related terminal and server

Info

Publication number: EP1135922A1
Application number: EP99973209A
Authority: EP
Inventors: Pierre Sabatier
Original assignee: Sagem SA
Current assignee: Sagem SA
Priority date: 1998-12-02
Filing date: 1999-12-01
Publication date: 2001-09-26
Also published as: WO2000033551A1; FR2786970A1; FR2786970B1

Abstract

The invention concerns a method for setting up a communication between a first terminal and a second terminal (T1, T2) via a computer communication network (1) wherein: the first terminal (T1, T2) connects itself to the computer network, obtains a computer address and sends to a call and communication server (3) of the computer network (1) a request for calling the second terminal (T2) to communicate with it via the computer network (1); the server notifies the first terminal call to the second terminal through a one-way communication, of the server to the second terminal, and the second terminal automatically identifies the call notification; the second terminal connects itself to the computer network and obtains a computer address; and the server (3) transmits to at least one of the two terminals (T1, T2) the computer address of the other terminal (T1, T2).

Description

METHOD FOR ESTABLISHING COMMUNICATION BETWEEN TWO TERMINALS + THROUGH THE INTERNET THROUGH A CALL SERVER, TERMINAL AND ASSOCIATED SERVER

A computer network such as the Internet allows interlocutors, equipped with a communication terminal, to communicate with each other in real time. The interlocutors can for example dialogue by voice, transmit faxes or exchange data (sound, image, video, 0 etc.), through the Internet.

To connect to the Internet, a terminal must have Internet access provided by an access provider. It can be a telephone access, for example by the PSTN network (Switched Telephone Network 5), or even an access by a local network, such as a corporate network, having its own provider. Internet access. In any case, the cost of long distance communication is much more advantageous over the Internet than over an ordinary telephone network. In the case of telephone access, the interlocutor only pays the cost of the 0 telephone commumcation with the access provider, which is generally carried out locally, and, in the case of access via a local network , commumcation through the Internet itself is free. In short, the cost advantages of the Internet are extremely important.

5 However, communication terminals do not generally connect permanently to the Internet, but only when necessary, for example to communicate with a correspondent, consult an electronic mailbox or visit a website. Offline, the terminals cannot therefore be notified of a possible "incoming call" on the Internet. 0

In short, the connection of two terminals through the Internet, and more generally through any other computer network of this type, presents difficulties.

5 The documents EP 0 781 016 and WO 98 11 704 teach to connect two terminals through a computer network such as the Internet via a server. These solutions are however not satisfactory because they are too expensive. The present invention provides a more economical solution. 0 To this end, the invention concerns a method for establishing a communication between first and second ^terminals' through a communication computer network, wherein - the first teraiinal connects to the computer network, obtains a computer address and address a call server and the computer network communication request for a call from the second terminal to communicate with it through the computer network,

the server notifies the call from the first terminal to the second terminal by a one-way communication from the server to the second terminal, and the second terminal automatically recognizes the call notification,

- the second terminal connects to the computer network and obtains a computer address, and ^"

- The server transmits to at least one of the two terminals the computer address of the other terminal.

In a first embodiment of the invention, in the case where the second terminal is out of communication through the computer network, the server calls the second terminal, through a telephone network, the second terminal identifies the caller, at the using identification data provided by a caller identification service, and interprets the server call as a call notification to communicate across the computer network.

Advantageously, in the case where the second terminal is in the course of communication through the computer network, the server transmits to the second terminal a call notification for communicating through the computer network, using the connection in progress from the second terminal to the network computer science.

In a second embodiment, the server transmits a call notification message to the second terminal, through a signaling channel of a telephone network.

In a third embodiment, the server calls the second terminal through a telephone network, the second terminal picks up and the server transmits call notification signaling to it.

Regardless of how the call is notified, the cost of the notification, borne by the server, is low, if not zero. In addition, the second terminal connecting itself to the computer network, after being notified, or prior to notification, it is he who bears the cost of the useful communication with the first terminal.

The invention also relates to a communication terminal for implementing the above method, arranged to communicate through the telephone commumcation network and through the computer communication network, characterized in that it comprises means for automatic recognition of a call notification to communicate across the computer network.

The invention also relates to a call and communication server for implementing the above method, comprising means for connection to the computer network, means for connection to the telephone network, means for receiving a request for call from a communication terminal, issued by a calling communication terminal, and to notify the call to the called terminal, and means for transmitting to at least one of the two terminals, calling and called, the computer address of the other terminal, server characterized in that it comprises a table listing a plurality of calling terminals awaiting communication through the computer network and means for managing said table.

The invention will be better understood using the following description of a particular embodiment of the method for establishing communication between two teirninals through a computer network as well as the terminal and a call and call server. in communication, for the implementation of the method, with reference to the attached drawing in which

FIG. 1 represents a diagram of several terminals, of the server, of the computer network and of a telephone network,

- Figure 2 shows a functional block diagram of the teirninal and

- Figure 3 shows a functional block diagram of the server.

The method of the invention makes it possible to establish communication between two communication terminals Ti and T ₂ , through a packet-switched computer network, in this case the Internet 1.

Each terminal Ti, T ₂ here consists of a telephone apparatus connected to a telephone communication network, here the switched telephone network PSTN 2, and arranged to carry out voice communications. The terminals Ti, T ₂ each have a telephone number on the telephone network 2 and also benefit from a caller identification service, provided by the operator of the telephone network 2, allowing them, in the event of incoming call, to receive a signaling of identification of the caller, called "CLIP", containing the telephone number of the caller, without off-hook, in other words without establishing a telephone connection with the caller.

The terminals Tj and T ₂ each have access to the Internet 1 provided by an access provider FAIi and FAI ₂ .

Internet 1 is a packet-based network. In other words, the data is transmitted over the Internet 1 in packet mode, that is to say in the form of data packets. Each data packet contains a destination computer address on the Internet 1. By "computer address" is intended to denote an address on the Internet network 1, more commonly called "Internet Protocol" address. . These EP addresses consist of a succession of digits and are used by the Internet 1 to route the data packets to their destination. A communication terminal, connected to the Internet 1, has its own address LP on the Internet network 1, most often assigned by the Internet access provider 1 of the terminal. The addresses LP of the commincation terminals are generally not fixed, but dynamic, in other words allocated provisionally to the terminals. In other words, the address LP of a terminal changes quite often, generally with each new connection of the terminal to the Internet 1. In this case, the addresses LP of the terminals Ti and T ₂ are dynamic.

The two terminals Ti and T ₂ are clients of a call and communication server 3 of the Internet 1 and, as such, belong to a set 5 of client terminals of the server 3. Each of the client terminals of the assembly 5 can, in cooperation with the server 3, make and receive calls in order to communicate with a corresponding terminal via the Internet 1. From the outset, it will be noted that by "client terminal of the server 3", is meant designate a terminal comprising a client call management application for communicating via the Internet 1, compatible with a corresponding server application of the server 3.

The two terminals Ti, T ₂ being identical, only one will now be described. The terminal Ti comprises a line interface 10 for transmitting data, comprising a modem for connection to the telephone network 2, a man-machine interface and, in memory, an application for connecting / disconnecting to the Internet 1, the client application for management of calls, sent and received by the terminal Ti, to communicate via the Internet 1, and a communication application via the Internet 1, respectively represented by the functional blocks 11, 12 and 13. All of these elements are linked to a central control unit 27, in this case a microprocessor, intended to execute the applications and to control the operation of the terminal Tj.

The human-computer interface comprises a telephone handset comprising a loudspeaker 14 and a microphone 16, respectively connected to a digital / analog converter (DAC) 15 and to an analog / digital converter (ADC) 17, as well as a input keyboard 18 and a display screen 19, connected to a block 20 for input and display management. The keyboard 18 includes a specific "Internet" key intended to control a call through the Internet 1.

The connection / disconnection block lia Internet 1 is intended to connect the terminal Ti to the Internet 1, by telephone connection to the access provider F Ali, according to a connection process, and to disconnect the teirninal Ti from the Internet 1, following a disconnection process.

The block 13 for communication over the Internet 1 comprises an audio compression / decompression module 21 and a format conversion module 22. The module 21 is intended, on transmission, to compress the voice data to be transmitted and, on reception, to decompress the voice data received. The module 22 is intended, on transmission, to decompose the data to be transmitted into data packets and, on reception, to recompose the data from received data packets, according to Internet communication protocols 1, into it Species the TCP and LP protocols.

The call management client application for communicating via the Internet 1 allows the terminal Ti, in cooperation with the server 3, to make and receive calls to communicate via the Internet 1, as will be more precisely explained in the description of the process.

Functionally, block 12 includes in particular

- a module 23 for preparing a call request and sending it to the server 3, - a module 24 for automatically detecting and recognizing a call notification from server 3,

a module 25 for preparing a call acceptance request and sending it to the server 3 and

a module 26 for preparing a call refusal request and sending it to the server 3.

The module 24 is intended to detect an incoming call from server 3, using the telephone call number of server 3 provided by the telephone network, and to automatically recognize, without off-hook, that this call is a call notification to communicate through the Internet 1.

The call and commumcation server 3 will now be described with reference to FIG. 3.

The server 3 comprises an interface 30 for connection to the Internet 1, in this case a network card, by means of which the server 3 is permanently connected to the Internet 1, an interface 31 for connection to the telephone network 2 comprising a modem, a database 32, and, in memory, a server application for managing the calls sent and received by the client terminals of the set 5 and a terminal communication application, respectively represented by the functional blocks 36 and 37.

The database 32 contains, in memory, a table of client terminals 33, a table 34 of client terminals awaiting communication via the Internet 1 and a table 35 of client terminals during communication via the Internet 1 .

The client terminal table 33 includes, for each client terminal of the set 5, a "file" containing identification data of the client terminal, in this case the telephone call number on the telephone network 2 and a number terminal, respectively contained in two specific fields. It will be noted here that each client terminal of the set 5 is associated with a unique serial number.

Table 34 lists a plurality of calling terminals and awaiting communication via the Internet 1. It contains, for each of these terminals, a file containing, in specific fields, - the telephone call number of the calling terminal, - the LP address of the calling terminal and - at least one telephone number of a called terminal, with which the calling terminal is waiting for communication.

Table 35 lists all of the client terminals of the server 3 in communication through the Internet 1. It contains, for each of these terminals, a file containing, in specific fields, the telephone number and address Terminal LP.

The server application for managing the calls sent and received by the client terminals of the set 5 is intended to allow these terminals to make and receive calls to commute over the Internet 1. The block 36 comprises in particular

a module 38 for receiving a request for a call from a terminal and for notifying the call to said called terminal, a module 39 for receiving a request for accepting a call and searching for a calling terminal in table 34,

a module 40 for receiving a call refusal request and notification of the call failure to the calling terminal, and

- A module 41 for managing, or updating, tables 33-35.

The application 37 for communication via the Internet 1 allows the server 3 to communicate at least two terminals through the Internet 1, by sending each of these terminals the computer address of the other terminal, as will be explained later in the description of the process.

All the elements of the server 3 are connected to a central control unit, intended to execute the applications and to control the operation of the server 3.

Finally, the server 3 has a telephone number on the telephone network 2 and a fixed TP address on the Internet 1.

After the structural description of the client terminals and of the server 3, the method of establishing a communication between the two terminals Ti and T ₂ will now be described, in various conceivable cases.

To call the terminal T ₂ , a user of the terminal Ti presses the "Internet" key on the keyboard 18 and dials the telephone call number of the terminal T ₂ . The following steps are carried out by the terminal Ti, the terminal T ₂ and the server 3, by executing their respective call management applications, automatically, that is to say without the intervention of a user.

The terminal Ti connects to the Internet 1, by telephone connection to the access provider FAIi and obtains a TP address.

Furthermore, the terminal Ti prepares a call request from the terminal T ₂ containing, in specific fields,

- an indication of the nature of the request, specifying that it is a request for appeal,

- the telephone call number of the calling terminal Ti,

- the serial number of the terminal calling Ti, - the LP address of the terminal calling Ti as well as

- the telephone number of the terminal called T ₂ .

After connection to the Internet 1, the terminal Ti sends the call request to the server 3.

The server 3 receives the request from the terminal Ti, determines that it is a call request, using the indication on the nature of the request, extracts the telephone call number and the serial number of the calling teraiinal Ti and compares these numbers with those contained in the table of client terminals 33 in order to check whether the teirninal Ti is a client of server 3. The terminal Ti being listed in the table of client terminals 33, the server 3 accept the request for appeal.

The server 3 then extracts from the call request received the telephone call number of the terminal called T ₂ and, using this number, searches for a file for the terminal T ₂ in table 33 of the client terminals in order to determine if the terminal T ₂ belongs to the set 5.

The terminal T ₂ being listed in table 33, the server 3 then searches for a file for the terminal T ₂ in the table 35 of the terminals in communication, using the telephone call number of the terminal T ₂ , in order to to determine whether the terminal T ₂ is in communication through the Internet 1.

1) In the case where the terminal T ^ is not being commumcated to via the Internet 1. the server 3 creates and introduces into the table 34 of the terminals awaiting communication via the Internet 1 a file for the terminal Ti, containing the telephone call number and the address LP of the calling terminal Ti as well as the telephone call number of the terminal s called T ₂ , in the appropriate fields.

Then, the server 3 calls the terminal T ₂ through the telephone network 2 to notify it of the call from the terminal Ti.

0 l .l) In the case where the telephone line of terminal T? is not busy, when the call from server 3 is received, the terminal T ₂ receives the telephone call number from server 3, supplied by the caller identification service, without lifting the telephone line. The telephone call from server 3 to terminal T ₂ is short-lived but sufficient to allow reception 5 of the telephone call number from server 3. It constitutes a call notification to notify terminal T ₂ of an incoming call to communicate through the Internet 1.

The terminal T ₂ compares the telephone call number received with that of the 0 server 3, previously stored in memory. The two numbers being identical, the terminal T ₂ detects that the incoming call comes from the server 3 and interprets it as a call notification. The terminal T ₂ thus automatically recognizes the call notification of the server 3, without picking up, using the call number of the server 3 provided by the identification service of the caller. It will be emphasized here that the server 3 notifies the call by a one-way communication, from the server to the terminal T ₂ , through the telephone network 2.

1.1.1) If the call is accepted, the T ₂ terminal connects to the Internet 0 1, by telephone connection to the ISP ₂ access provider, and obtains an LP address.

Furthermore, the terminal T ₂ prepares a call acceptance request containing, in specific fields, an indication of the nature of the request, specifying that it is a call acceptance request. , as well as the telephone number and address LP of the terminal called T ₂ , and the address to the server 3 via the Internet 1.

The server 3 receives the request from the terminal T ₂ , determines that it is 0 a call acceptance request, using the indication on the nature of the request, and extracts from it the telephone call number of the terminal called T ₂ . The server 3 then searches in the table 34 of the terminals awaiting connection for a file for a terminal awaiting communication with the terminal T ₂ , by comparison of the telephone call number of the terminal T ₂ with those contained in the number field. terminal called telephone call from each file of the table 34. The server 3 thus finds the file of the terminal Ti and extracts the address LP from the latter.

Furthermore, the server 3 extracts the address LP from the called terminal T ₂ from the received call acceptance request.

The server 3 then transmits to each of the two terminals Tj (T ₂ ) the address LP of the other terminal T ₂ (Ti).

After the cross transmission of the addresses LP of the terminals Ti, T ₂ , the server 3 updates the tables 34 and 35, by deleting from the table 34 the file for the terrninal Ti and by inserting in the table 35 a file for each of the two teiminals Tj and T ₂ , containing the telephone number and the LP address of this terrninal.

Each terminal Ti, T ₂ knowing the address LP of the other terminal T ₂ , Ti, the two terminals Ti, T ₂ can now communicate via the Internet 1 and then activate a signal, here audible, to warn their users that Internet commumcation is established.

During the communication through the Internet 1, the terminals Ti, T ₂ exchange data packets, according to the communication protocols through the Internet 1. In transmission, each terminal Ti, T ₂ captures analog signals from voice using the microphone, digitizes these signals into voice data which it compresses and then decomposes into data packets then transmitted over the Internet 1. On reception, each terrninal Ti, T ₂ recomposes the voice data from received data packets and then decompresses them before converting them into analog voice signals which are broadcast by the loudspeaker.

When the communication is finished, each terminal Ti, T ₂ sends the server 3 a notification of end of communication so that the server 3 updates the table 35 of the terminals during communication, by deleting from this table 35 the Teirninal Ti file and that of terminal T ₂ . 1.1.2) If the call from terminal T is refused, terminal T ₂ does not react to the call from server 3 and, after a predefined waiting period without receiving a call acceptance request from the terminal T ₂ , the server 3 addresses to the terminal Ti a notification of call failure, via the Internet 1. On receipt of this, the terminal Ti activates a signal, here audible, to warn the user of the call failed.

1.2) In the case where the terminal T ₇ is occupied when receiving the call notification call from the server 3. for example by a telephone call in progress, the server 3 sends a notification of call failure to the terrninal Ti which alerts the user to the failure of the call by an audible warning signal.

2) In the case where the terminal T ₇ is listed in table 35 of the terminals in communication over the Internet 1. the server 3 extracts the address LP of the terminal T ₂ from this table 35 and prepares a notification d call which it transmits to terminal T ₂ through Internet 1, in the form of data packets, using the current connection of terminal T ₂ to Internet 1. The call notification contains an indication of the nature of the notification, specifying that it is a call notification, and the address LP of the calling terrninal Ti, in specific fields.

During the communication in progress via the Internet 1, the terrninal T ₂ receives the call notification and recognizes it automatically with the aid of the indication specifying that it is a call notification. It will be emphasized that the server 3 notifies the call by a one-way communication, from the server 3 to the terminal T ₂ , through the telephone network 2.

2.1) If the call is accepted, the terminal T ₂ prepares a call acceptance request, similar to that previously described, and the address to the server 3, through the Internet 1.

The server 3 receives the call acceptance request, searches table 34 for a file for a calling terminal awaiting communication with the terminal called T ₂ , using the telephone call number of the terminal called T ₂ extract from the call acceptance request, and it finds the terminal Ti file. The server 3 extracts the address JP of the terrninal Ti from the file found and the address LP of the terminal T ₂ of the call acceptance request received and finally transmits to the calling terminal Ti the address LP of the terminal called T ₂ , through the Internet 1.

After the cross transmission of the LP addresses, the two terminals TT ₂ activate an audible signal to warn their users of the communication between the two terminals Ti, T ₂ , and initiate communication via the Internet 1. Furthermore, the server 3 updates tables 34 and 35, as previously explained.

2.2) If the call is refused, the called terminal T ₂ does not respond to the call notification from the server 3 and, after a predefined waiting time, the server 3 sends a call failure notification to the calling terminal Ti which alerts the user to the failure of the call by an audible warning signal.

In the description which has just been made, the server 3 transmits to each terminal Tι (T ₂ ) the address LP of the other terminal T ₂ (Tι). As a variant, the server 3 transmits to one of the two terminals Tι (T ₂ ) the address LP of the other terminal T ₂ (Tι), which then sends to the corresponding terminal Tι (T ₂ ), through the 'Internet 1, data packets carrying its own LP address.

In a first alternative embodiment, the call and communication server transmits the call notification to the terminal called T ₂ , through a signaling channel of the telephone network, by an SMS message, or other message of this type. , containing the indication that it is a call notification to communicate over the Internet. The server thus notifies the call, by one-way communication, from the server to the terminal T ₂ , through a signaling channel of the telephone network. When Terrninal T ₂ receives the call notification message, it automatically recognizes that it is a call notification, using the indication specifying it. The call notification message could also contain the address LP of the calling terminal Ti.

In a second alternative embodiment, the call and commumcation server calls the terminal called T ₂ through the telephone network. On reception of the call, the terminal T ₂ picks up and the server transmits to it a specific signaling of call notification, by one-way communication, from the server to the terminal T ₂ , of short duration, through the telephone network. The server could also transmit to terminal T ₂ the address LP of the calling terminal Ti during this unidirectional commumcation. In the above description, the two terminals, calling Ti and called T _2, are telephone devices intended to establish voice communication between them. The invention could also apply to any other type of communication terminal and in particular to fax machines.

In a particular implementation of the invention, the terminal called T ₂ is a terminal for hosting an information site and for distributing information pages of this site. The information site, more commonly called a "Web" site, comprises a plurality of information pages, or "Web" page, and in particular a home page, linked together by hypertext links. Each web page is associated with a URL (Uniform Resource Locator) location on the internet.

The call and connection server comprises, in memory, a directory containing the telephone call numbers of a plurality of terminals for hosting websites and broadcasting web pages and, for each hosting terminal , the URL address of the home page of the ^" site of this terminal, containing an Internet domain name of the server and an identifier of terminal T. These URL addresses are of the form www.X / Y, where X and Y are respectively the domain name of the server and the identifier of the terminal considered.

The calling terrninal Ti understands an Internet browser, allowing him to visit Web sites.

To visit the website of terminal T ₂ , terminal Ti connects to the Internet and, using its browser, sends a request to acquire the page to the call and communication server. reception of the T2 terminal site, containing the URL address of this page and constituting a request for a call from the T ₂ terminal. The server searches the directory for web site terminals for the telephone number of terminal T ₂ , associated with the URL address received, then notifies the call from terrninal Ti to terminal T2, here by calling the teirninal T2 through the telephone network. The terminal T ₂ automatically recognizes the call notification using the telephone number of the server, provided by a caller identification service, as previously explained. The terminal T2 then automatically connects to the Internet and asks the server for the address LP of the calling terminal Ti, by sending it a call acceptance request, as previously described. After receiving the address LP from the terminal Ti, the terminal T ₂ sends the home page of its site to this IP address. Using its Internet browser, the terminal T _\ displays the home page received and can then visit the website of the terminal T ₂ , passing from one page to the other by means of hypertext links.

It could also be envisaged that the server notifies the call from the first terminal to the second terrninal via a gateway between the telephone and Internet networks, which, at the request of the server, would be responsible for notifying the call. In the event of a call notification by sending telephone signaling, the use of a gateway, geographically close to the called terminal, further reduces the cost of the notification. In the event of call notification by CLIP, notification via a gateway may also be necessary if the server is located outside the geographical area covered by the caller identification service of the called terminal.

Claims

1- Method for establishing communication between a first and a second terminal (Ti, T ₂ ) through a computer communication network (1), in which,

- the first terminal (Ti, T ₂ ) connects to the computer network, obtains a computer address and address to a call and communication server (3) from the computer network (1) a call request from the second terminal (T ₂ ) to communicate with him through the computer network (1),

- the server notifies the call of the first teirninal to the second terrninal by a one-way communication, '' from the server to the second terminal, and the second terminal automatically recognizes the call notification, - the second terrninal connects to the computer network and obtains a computer address, and

- The server (3) transmits to at least one of the two terminals (Ti, T2) the computer address of the other terminal (T ₂ , Ti).

2- The method of claim 1, wherein, in the case where the second terminal (T ₂ ) is out of communication through the computer network (1), the server (3) calls the second terminal (T ₂ ), through the telephone network (2), the second terminal (T ₂ ) identifies the caller, using identification data provided by a caller identification service, and integrates the call from the server (3) as a call notification to communicate across the computer network (1).

3- Method according to one of claims 1 and 2, wherein, in the case where the second terminal (T ₂ ) is being communicated through the computer network (1), the server (3) transmits to the second terminal (T ₂ ) a call notification to communicate through the computer network (1), using the current connection of the second terminal (T ₂ ) to the computer network (1).

4- The method of claim 1, wherein the server transmits to the second terrninal a call notification message, through a signaling channel of the telephone network.

5- The method of claim 1, wherein the server calls the second terminal through a telephone network, the second terminal picks up and the server sends it call notification signaling.

6- Method according to one of claims 2 to 5, wherein the server notifies the call to the second terrninal via a gateway between the two networks, telephone and computer.

7- Method according to one of claims 1 to 6, wherein the server (3) manages a table listing terminals awaiting communication through the computer network and a table listing terminals during communication through the computer network .

8- Commumcation teraiinal for the implementation of the method according to claim 1, arranged to "communicate through the telephone communication network. (2) and through the computer commumcation network (1), characterized in that it comprises means (24) for automatic recognition of a call notification for communicating through the computer network (1).

9- Terminal according to claim 8, wherein the means (24) for automatic recognition of a call notification are arranged to detect an incoming call from the server (3), using identification data of the caller supplied by a caller ID service.

10- Teπninal according to claim 8, wherein said recognition means are arranged to automatically recognize a call notification message received by a signaling channel of the telephone network.

11- Terminal according to claim 8, wherein said recognition means are arranged to automatically recognize a telephone signaling call notification.

12- Terminal according to one of claims 8 to 11, wherein there is provided means (25) for preparing a request for acceptance of call and send it to the server (3).

13- Terminal according to one of claims 8 to 12, wherein there is provided means (26) for preparing a request for refusal of call and send it to the server (3). 14- Terminal according to one of claims 8 to 13, hosting an information site and dissemination of information pages of this site.

15- Call and communication server for implementing the method according to claim 1, comprising means for connection to the computer network (1), means for connection to the telephone network (2), means (38) to receive a call request from a communication terminal, sent by a calling communication terminal, and to notify the call to the called terminal, and means (37) for transmitting to at least one of the two terminals, calling and called, the computer address of the other terminal, server characterized by the fact that there is a table (34) listing a plurality of calling teπriinals awaiting communication through the computer network and means (41) to manage said table (1).

16- Server according to claim 15, wherein there is provided a table (35) listing a plurality of terminals being commumcated through the computer network and means (41) for managing said table.

17- Server according to one of claims 15 and 16, wherein there is provided means (40) for notifying a call failure to a calling communication terrninal.