EP1625739A1

EP1625739A1 - Method and telecommunication terminal for automatically composing a telephone number

Info

Publication number: EP1625739A1
Application number: EP04733569A
Authority: EP
Inventors: Philippe Lottin; Jean-Louis Cheviet
Original assignee: France Telecom SA
Current assignee: Orange SA
Priority date: 2003-05-22
Filing date: 2004-05-18
Publication date: 2006-02-15
Also published as: FR2855349A1; WO2004105368A1

Abstract

The invention relates to a telecommunication terminal for automatically composing a telephone number, whereby the terminal is connected to a telephone telecommunication network, comprising a second telecommunication terminal, the telecommunication terminal for the automatic composition of a telephone number receiving, by means of a connection with said second telecommunication terminal, at least one telephone number identifying a third telecommunication terminal, characterised in that the terminal for the automatic composition of the telephone number comprises means for memorising the at least one telephone number received, means for detection of a control call signal in a signal transmitted by said second telecommunication terminal, means for control of disconnection from the telecommunication network, means for control of connection to the telecommunication network and means for control of composition of the memorised number. The invention further relates to the corresponding method.

Description

Telecommunication method and terminal for automatic dialing of a telephone number

The present invention relates to a method and a device for making a telephone call from an identifier, and more particularly from a telephone number, obtained by means of a telecommunications network.

Telecommunication devices are known, such as telephones which include a telephone directory consisting of a list of telephone numbers and / or identifier of correspondents. When the telephone user wishes to call a correspondent, the latter consults the directory, selects a telephone number and / or an identifier and initiates a telephone call from the selected number. The telephone directory can be created by the user or consist of a series of previously called telephone numbers.

Also known are the services offered by telecommunications operators in which, by a call from the subscriber to a server of the telecommunications operator, the server communicates the telephone number of the last call to which the subscriber did not answered. The subscriber is informed by voice of the telephone number and, if desired, by pressing a predetermined key on his telephone, in this case key 5, it is connected by the server of the telecommunications network with the telephone number of the last caller.

Also known are telephone information services of telephone operators who propose the connection by the server of the telecommunications network with the requested telephone number.

This connection made by the telecommunications network is complex to implement. It requires a telecommunications network such as a so-called intelligent telecommunications network.

Pricing for the new communication is also complex to achieve. Indeed, a call to this type of server is priced at a predetermined cost, while the new call generated by the telecommunications network is billed at a cost different from that of the call to the network server.

The invention aims to solve the drawbacks of the prior art by proposing a telecommunications terminal for the automatic dialing of a telephone number, the telecommunications terminal being connected to a telephone telecommunications network comprising a second telecommunications terminal , the telecommunications terminal for the automatic dialing of a telephone number receiving, by a connection with said second telecommunications terminal via the telecommunications network, at least one telephone number identifying at least a third telecommunications terminal, characterized in that the terminal for automatic dialing of a telephone number comprises:

means for detecting in a signal transmitted by the second telecommunications terminal a command call signal, means for storing said or each received telephone number,

means for controlling disconnection from the telecommunications network following the detection of the command call signal,

- means for controlling connection to the telecommunications network following disconnection from the telecommunications network, - means for controlling the composition of the or a stored number to establish a telephone communication with the third telecommunications terminal.

Correlatively, the invention provides a method of automatically dialing a telephone number in a first telecommunications terminal connected to a telephone telecommunications network comprising a second telecommunications terminal, the first telecommunications terminal receiving, by a connection with said second telecommunications terminal via the telecommunications network, at least one telephone number identifying at least a third telecommunications terminal , characterized in that the method comprises the steps of:

- detection in a signal transmitted by the second telecommunications terminal of a command call signal,

- storage of at least one telephone number received, - disconnection from the telecommunications network following the detection of the command call signal,

- connection to the telecommunications network following disconnection from the telecommunications network,

- dialing of or a stored number to establish a telephone call with the third telecommunications terminal.

Thus, the telecommunications terminal upon detection of a command call signal automatically generates a call to another telecommunications terminal from a telephone number previously transmitted by a telecommunications terminal. The realization of such a service is then simplified for the operator of the telecommunications network. No call redirection is then necessary. By a simple communication of an order message and a telephone number, the operation is thus carried out. In addition, the management of the billing of the call is simplified, this being done conventionally as if the user of the telecommunications terminal dialed the telephone number himself. Since the call to another telecommunications terminal is automatic, the user is not called upon. This service is therefore transparent to him.

More specifically, the second telecommunications terminal is a server. More particularly, the command call signal is detected in the signal transmitted by the second telecommunications terminal in the form of a V23 signal frame.

Advantageously, the telecommunications terminal for the automatic dialing of a telephone number is connected to a fourth telecommunications terminal and it includes means for connecting and / or disconnecting the fourth telecommunications terminal from the telecommunications network. Thus, the device according to the invention allows the use of conventional telecommunication terminals such as telephone handsets which do not have the functionalities of the invention. A simple addition of a box comprising the invention placed between the telephone handset and the telecommunications network allows the user of the telephone handset to be able to benefit from the service according to the invention without having to change his telephone handset.

More specifically, the telecommunication terminal for the automatic dialing of a telephone number includes means for generating a loop current when the fourth telecommunication terminal is disconnected from the telecommunication network by the telecommunication terminal for the automatic dialing of 'a phone number.

Thus, certain telephone handsets which, when the current in the current loop between the telecommunications network and the telephone handset is canceled, automatically cut the connection, may nevertheless be able to operate with the invention. A current loop being simulated, these telephone handsets do not automatically cut the connection, they can then be put in communication with the telecommunication terminal whose telephone number has been transmitted via the telecommunication network.

The invention also relates to a telecommunication terminal called first telecommunication terminal connected to a telephone telecommunication network comprising a second telecommunication terminal, the telecommunication terminal transferring by a connection with said second telecommunication terminal via the telecommunication network. at least one telephone number identifying a third telecommunications terminal, characterized in that the first telecommunications terminal includes means for inserting, in a signal transmitted to the second telecommunications terminal, a dialing command call signal by said second terminal of the at least one transferred telephone number.

Correlatively, the invention provides a method of transferring information in a telecommunication terminal connected to a telephone telecommunication network comprising a second telecommunication terminal, the method transferring by a connection with said second telecommunication terminal via the network telecommunications system at least one telephone number identifying a third telecommunications terminal, characterized in that the method includes a step of inserting into a signal transmitted to the second telecommunications terminal a dialing control call signal by said second terminal of at least one transferred telephone number.

The invention also relates to a signal transmitted over a telecommunications network by a first telecommunications terminal in a connection to a second telecommunications terminal via the telecommunications network, characterized in that the signal includes information representative of a command call command to establish a connection to the telecommunications network following disconnection from the telecommunications network. The advantages of the methods and of the signal being identical to those mentioned for telecommunication terminals, these will not be recalled.

The invention also relates to the computer program stored on an information medium, said program comprising instructions making it possible to implement the method or methods described above, when they are loaded and executed by a computer system.

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which: FIG. . 1 represents a telecommunications network in which the telecommunications terminal according to the invention communicates with the server of the telecommunications network; Fig. 2 shows a schematic view of the architecture of the telecommunications terminal according to a first embodiment of the invention; Fig. 3 shows a schematic view of the architecture of the telecommunications terminal according to a second embodiment of the invention; Fig. 4 shows a schematic view of the architecture of the server according to the invention; Fig. 5 shows the algorithm performed by the telecommunications terminal according to the first embodiment of the invention; Fig. 6 shows the algorithm performed by the telecommunications terminal according to the second embodiment of the invention; Fig. 7 shows the algorithm performed by the server communicating at least one telephone number to the telecommunications terminal according to the invention; Fig. 8 represents a table comprising the various elements of a V23 data frame sent by the server according to the invention; Fig. 9 represents a table summarizing the different types of connections included in the fourth byte of the V23 data frame of FIG. 8; Fig. 10a represents a table describing the content of a data frame

V23 in which the server according to the invention communicates a telephone number to the telecommunications terminal 10; Fig. 10b represents a table describing the content of a V23 data frame in which the server according to the invention communicates to the telecommunications terminal 10 the name of the user of the telecommunications terminal 30 associated with the telephone number communicated according to FIG. 10a; Fig. 10c represents a table describing the content of a data frame

V23 in which the server according to the invention communicates to the telecommunications terminal 10 the date and time of the call made by the telecommunications terminal 30 associated with the telephone number communicated according to FIG.

10a.

Fig. 1 represents a telecommunications network in which the telecommunications terminal according to the invention communicates with the server of the telecommunications network.

The telecommunication network 30 includes a server 20. The telecommunication network is for example a switched PSTN telephone network. The network 30 can also be a network of ISDN type (Digital Network with Service Integration) or a cellular telephone telecommunications network such as a network of GSM (Global System for Mobile communications), UMTS (Universal Mobile Telecommunications System) type, GPRS (General Packet Radio Services), etc.

The server 20 is for example a voice server 20 which broadcasts voice messages through the network 30, the voice messages can also be associated with written messages. By voice messages is meant sound sequences comprising recordings of human voice obtained by recording a person's voice or by voice synthesis. By written messages is meant data adapted to be viewed, for example, on a screen in the form of alphanumeric characters. The voice server 20, such as for example an Audiotel server of the company France Telecom, is accessible via a network of the public telephone network of the company France Telecom in which it is identified in a conventional manner by a telephone number. The voice server 20 communicates with the caller using voice messages. Voice messages are sent in block form in response to commands transmitted by the caller. Each voice message block is prerecorded and stored with appropriate addressing in a storage means of the voice server 20 described later with reference to FIG. 4. In general, a welcome voice message is sent when a telecommunications terminal 10 is connected to the voice server 20, then one or more specific messages are sent each time a key of the telecommunications terminal 10 is actuated thus forming a command to the voice server 20.

The voice server 20 also associates written messages with voice messages. These written messages are transferred before sending the voice message to be decoded by the telecommunications terminal 10 and reproduced on a display means.

The voice server 20 is for example a server capable of memorizing the last telephone number of a caller, or even his identity, having tried to reach the telecommunications terminal 10. The voice server can also memorize a larger number of telephone numbers callers who have reached or attempted to reach the telecommunications terminal 10.

As a variant, the voice server 20 is a telephone information server which, during voice interrogations of the telecommunication terminal 10, transfers information such as the telephone number that the communication device 10 wishes to reach.

According to another variant, the voice server 20 is a server comprising a directory of telephone numbers associated with the communication device 10.

The voice server 20 generates a call control signal intended for the telecommunication device 10 and transfers to the telecommunication terminal 10 one or more telephone numbers such as those previously mentioned.

The telecommunications terminal 10 is connected to the network 30. It will be described in more detail with reference to Figs. 2 and 3. A telecommunications terminal 33 is also shown in FIG. 1. It is for example the telecommunication terminal 33 which has tried to reach the telecommunication terminal 10 or that the telecommunication terminal 10 wishes to join. This telecommunication terminal 33 can also generate a call control signal intended for the telecommunication device 10 in the same way as the voice server 20 and transfer to the telecommunication terminal 10 a telephone number, for example its own telephone number. .

Fig. 2 shows a schematic view of the architecture of the telecommunications terminal 10a according to a first embodiment of the invention. The telecommunications terminal 10a is for example a telephone handset comprising a processor l ia connected to a memory 12a, a screen 15a, a keyboard 16a, a means for detecting frames V23 and for generating DTMF signals 14a (Dual Tone Modulation Frequency) or voice frequencies, a line interface 13a as well as a speaker 17a and a microphone 18a. The memory 12a stores the program implementing the method according to the invention which will be described in detail with reference to FIG. 5. The memory 12a temporarily stores the telephone number received via the network 30.

The processor 1 ia executes the instructions of the program corresponding to the algorithm which will be described with reference to FIG. 5 and controls the line interface 13a, the screen 15a, the keyboard 16a, the frame detection means V23 and generation of DTMF signals 14a and the activation of the loudspeaker 17a and the microphone 18a.

The keyboard 15a and the screen 16a provide the man-machine interface with the user. Via the screen 15a, the processor l ia displays the telephone number (s) received via the telecommunications network 30. The keyboard 16a allows the user of the telecommunications terminal 10a to dial the number telephone of the voice server 20 according to the invention and of selecting for example a telephone number communicated by the voice server

20 so that the telecommunications terminal 10a automatically makes a call to the selected number. The telecommunications terminal 10a comprises a line interface 13a adapted to the telecommunications network 30. The line interface comprises inter alia at least one relay controlled by the processor 11 a allowing the connection or disconnection of the telecommunications terminal 10a to the network 30, at minus a transformer to isolate the telecommunications terminal 10a from the telecommunications 30 and at least one 2-wire 4-wire converter circuit enabling the separation of incoming and outgoing signals.

The telecommunications terminal 10a also includes a microphone 18a and a conventional speaker 17a. It should be noted that the loudspeaker 17a and the microphone 18a can be deactivated by the processor l ia during the reception and / or the generation of DTMF signals according to the invention.

The telecommunications terminal 10a also includes a means for detecting frames V23 and for generating DTMF signals 14a. This means of detecting V23 frames and generating DTMF signals 14a is for example a modem or a DSP (Digital Signal Processor).

The means for detecting V23 frames and for generating DTMF signals 14a is able to detect, decode V23 type signals and generate DTMF signals according to the protocol standardized at ETSI (European Telecommunication Standards Institute) and described in the document. ETSI EN 300 659-2 entitled Public S itched Telephone Network (PSTN): Subscriber Une protocol over the local loop for display and related services- Part 2: Off-hook data transmission and the document ETSI EN 300 659-3 entitled Access and Terminais (AT); Analogue access to the Public Switched Telephone Network (PSTN): Subscriber Une protocol over the local loop for display and related services- Part 3: Data link message and parameter.

Fig. 3 shows a schematic view of the architecture of the telecommunications terminal according to a second embodiment of the invention.

In this embodiment of the invention, the telecommunications terminal 10b is placed between a telecommunications terminal, more particularly a conventional telephone handset 35 and the telecommunications network 30.

The telecommunications terminal 10b is for example included in a box located near the telephone handset 35 or placed at a predetermined location in the home of the subscriber owning the telephone handset 35. The telecommunications terminal 10b comprises a processor 11b connected to a memory 12b, a means of detecting V23 frames and generating DTMF signals 14b (Dual Tone Modulation Frequency), a line interface 13b, a voltage generation module 19b and two relays Ra and Rb. It should be noted that the voltage generation module 19b can also be a loop current generator so as to comply with the specific specifications of certain countries.

The processor 11b executes the instructions of the program corresponding to the algorithm which will be described with reference to FIG. 6 and controls the line interface 13b, the frame detection means V23 and generation of DTMF signals 14b and the relays Ra and Rb.

As a variant, the telecommunications terminal 10b may have a screen, not shown, making it possible to view the telephone number (s) received by the telecommunications network 30. Thus, according to this variant, if the telephone handset 35 does not have a screen , the user can nevertheless view the telephone number (s) received via the telecommunications network and select a telephone number by pressing a key on the keyboard of the telephone handset.

The memory 12b stores the program implementing the method according to the invention and which will be described in detail below with reference to FIG. 6. Memory

12a temporarily stores the telephone number received via the network 30.

The telecommunications terminal 10b comprises a line interface 13b adapted to the telecommunications network 30. The line interface comprises inter alia at least one relay controlled by the processor 11b allowing the connection or disconnection of the telecommunications terminal 10b to the network 30, at least a transformer making it possible to isolate the telecommunications terminal 10b from the telecommunications network 30 and at least one 2-wire 4-wire converter circuit allowing the separation of the incoming and outgoing signals. The telecommunications terminal 10b also includes a means for detecting frames V23 and for generating DTMF signals 14b. This means of detecting V23 frames and generating DTMF signals 14b is for example a modem or a

DSP (Digital Signal Processor). The means for detecting frames V23 and generating DTMF signals 14b is identical to the means for detecting frames V23 and generating DTMF signals 14a. It will not be described further.

The means for detecting V23 frames and generating DTMF signals 14b is connected to the line interface 13b so as to receive V23 frames and / or transmit the DTMF signals according to the invention when the telecommunications terminal 10b is connected to the network telecommunications 30. The means for detecting frames V23 and for generating DTMF signals 14b is also connected to the connections denoted 31 connecting the relays Ra and Rb so as to be able to receive and / or transmit the DTMF signals according to the invention when the telephone handset 35 is connected to the telecommunications network 30. The telecommunications terminal 10b also includes two relays Ra and Rb controlled by the processor 1 lb allowing the telecommunications terminal 10b to connect to the telecommunications network 30 in place of the telephone handset 35 and to recreate a loop current to the telephone handset 35 so as to simulate a connection of the telephone handset 35 to the telecommunications network 30.

Fig. 4 shows a schematic view of the architecture of the server according to the invention.

The voice server 20 comprises a processor 21 connected to a ROM read-only memory 22, a random access memory 23, a voice memory 24, a data memory 25, a means 27 for detecting DTMF signals and for generating V23 (Dual Tone Modulation) frames Frequency) and a line interface 26.

When the voice server 30 is put into service, the program instructions corresponding to the algorithm of FIG. 7 are loaded from the read-only memory 22 into the random access memory 23 and are executed by the processor 21. The processor 21 controls, via a link denoted 28, the line interface 30, the detection means 27 of DTMF signals and for generating frames V23 and ensures the transfer of the information contained in the memories 24 and 25 to the telecommunications terminal 10a or the telecommunications terminal 10b and the telephone handset 35 via the telecommunications network 30.

The voice server 20 comprises a line interface 26 adapted to the telecommunications network 30. The line interface comprises inter alia at least one relay controlled by the processor 21 allowing the connection or disconnection of the server to a calling telecommunications terminal 10, at least a transformer making it possible to isolate the voice server from the telecommunications network 30 and at least one 2-wire 4-wire converter circuit allowing the separation of the incoming and outgoing signals.

The voice server 20 also includes a means 27 for detecting DTMF signals and for generating V23 frames. This detection means 27 of DTMF signals and V23 frame generation is for example a modem or a DSP (Digital Signal Processor). The means 27 for detecting DTMF signals and generating V23 frames also conforms to the standards explained for the means for detecting V23 frames and generating DTMF signals 14a described with reference to FIG. 2. It will not be described further.

The means 27 for detecting DTMF signals and for generating V23 frames is connected to the line interface 26 so as to receive and / or transmit V23 data frames according to the invention when a telecommunications terminal 10 is connected to the server vocal 20. FIG. 5 represents the algorithm carried out by the telecommunications terminal

10a according to the first embodiment of the invention.

When the application is launched, the processor 1 reads it from memory 12a, the program instructions corresponding to steps E500 to E513 in FIG. 5 and loads them into RAM, not shown, to execute them. In step E500, the processor l ia, when the telephone handset is lifted, controls the line interface 13a so that it carries out a connection to the telecommunications network 30. The processor l ia transfers the numbers dialed via the keyboard 16a by means of generation of DTMF signals 14a so that these are generated. These numbers here correspond to the telephone number associated with the server 20 according to the invention.

Once this step has been completed, the processor goes to step E501 and waits for the reception of a SAT signal (modem receiver activation signal). This SAT signal is a dual-frequency signal (2130Hz and 2750 Hz) which is transmitted over a TSAT time between 80 and 85 milliseconds (ms). This signal is transmitted by the voice server 20 via the telecommunications network 30 to the telecommunications terminal 10a and detected by the frame detection means V23 and generation of DTMF signals 14a.

Upon detection of this signal SAT, the processor l ia goes to the next step E502 and controls the frame detection means V23 and generation of DTMF signals 14a so that it generates a DTMF signal D informing the voice server 20 taking the SAT signal into account by the telecommunications terminal 10a.

The processor 11a then goes to step E503 and waits for the reception of a data frame V23. This data frame consists of a set of four bytes. The data frame is a frame allowing to select a terminal with a specific function. This data frame will be described with reference to Figs. 8 and 9. This data frame is transmitted by the voice server 20 via the telecommunications network 30 and detected and decoded by the frame detection means V23 and generation of DTMF signals 14a.

Upon detection of this frame, the processor 1 passes it to the next step E504 and checks whether the fourth byte of the frame received in step E503 is equal to the value 08H coded in hexadecimal.

If not, the voice server, with which the telecommunications terminal 10a is connected, does not offer the service as provided by the invention. The program according to the invention ends. It is a classic interrogation of a classic voice server such as existing in the state of the art.

If so, the voice server 20, by introducing this predetermined value equal to 08H, has the service according to the invention. The processor 10a then goes to step E505.

In step E505, the processor 1 controls the means for detecting frames V23 and for generating DTMF signals 14a so that the latter generates a DTMF signal thus informing the voice server 20 of the taking into account of the frame V23 detected in step E503 by the telecommunications terminal 10a. Once this operation has been completed, the processor 1 then passes it to step E506 and waits for the reception of a data frame V23. This data frame consists of a header byte equal to the value 80H coded in hexadecimal.

This message is transmitted by the voice server 20 via the telecommunications network 30 and detected and decoded by the frame detection means V23 and generation of DTMF signals 14a.

Upon detection of the header byte 80H, the processor ia goes to the next step E507 and decodes the data contained in the frame and in accordance with those which will be described with reference to FIGS. 10a, 10b and 10c.

This data includes at least one telephone number. This data may include a telephone number that the user of the telecommunications terminal 10a has obtained from a voice telephone information server. They may also include the name of the subscriber with this telephone number. They can also include a plurality of telephone corresponding to the criteria generated by the user of the telecommunications terminal 10a.

This data may include a telephone number that the user of the telecommunications terminal 10a has obtained from a voice server capable of giving the last telephone number of a correspondent who has tried to call the user of the telecommunications terminal 10a. They may also include the name of the subscriber with this telephone number. They may also include a plurality of telephone numbers of correspondents having tried to call and / or having called the user of the telecommunications terminal 10a. This data can also include the telephone numbers of correspondents that the user of the telecommunications terminal 10a has recorded in a directory of a voice server.

These data are decoded by the frame detection means V23 and generation of DTMF signals 14a, transferred to the processor l ia which transfers the content thereof to the screen 15a.

These received data are stored in step E508 in memory 12a. Once these data have been stored, the processor l ia goes to the next step E509 which consists in checking whether the user of the telecommunication terminal has selected via the keyboard 16a a telephone number previously received in step E509.

If no telephone number is selected, the program according to the invention stops.

If a phone number has been selected, the processor goes to step

E510 and generates a command intended for the line interface 13a so that the latter disconnects from the telecommunications network 13a. As a variant, the processor deactivates the loudspeaker 17a so that the user of the telecommunication terminal is not hampered by the signals which will then be transmitted.

The processor l ia goes to step E51 1 and generates a command intended for the line interface 13a so that the latter connects to the telecommunications network 13a. It should be noted that the processor l ia waits for a predetermined time of the order of a few hundred milliseconds between steps E510 and E511.

This step carried out, the processor 1 passes it to step E512 and reads the telephone number selected in memory 12a, for example the telephone number of the telecommunications terminal 33 and transfers it by means of frame detection V23 and generation of DTMF signals 14a.

The frame detection means V23 and generation of DTMF signals 14a then generates the DTMF signals corresponding to the telephone number of the telecommunications terminal 33.

It should be noted that the processor l ia can alternatively generate a waiting sound signal intended for the loudspeaker 17a during the steps E510 to E511.

When the telecommunication terminal 33 goes off-hook, the telecommunication terminal 10a automatically establishes a communication with a telecommunication terminal 33 after receiving a telephone number obtained through the telecommunication network 30.

Fig. 6 shows the algorithm performed by the telecommunications terminal 10b according to the second embodiment of the invention.

When the application is launched, the processor 11b reads from the memory 12b, the program instructions corresponding to steps E600 to E615 in FIG. 6 and loads them into RAM, not shown, to execute them.

In step E600, the processor 1 lb waits for the reception of a SAT signal. This signal is transmitted by the voice server 20 via the telecommunications network 30 and detected by the frame detection means V23 and generation of DTMF signals 14b via its connection with the link.

31.

Upon detection of this signal SAT, the processor 11b goes to the next step E601 and controls the means for detecting frames V23 and for generating DTMF signals

14b so that the latter generates a DTMF signal D informing the voice server 20 via the link 31 of the taking into account of the SAT signal by the telecommumcation terminal 10b.

The processor 11b then goes to step E602 and waits for the reception of a data frame V23. This data frame consists of a set of four bytes. The data frame is a frame allowing to select a terminal with a specific function. This data frame will be described with reference to Figs. 8 and 9. This data frame is transmitted by the voice server 20 via the telecommunications network 30, detected via the link 31 and decoded by the frame detection means V23 and generation of DTMF signals 14b.

Upon detection of this frame, the processor 11b goes to the next step E602 and checks whether the fourth byte of the frame V23 received in step E602 is equal to the value 08H coded in hexadecimal.

If not, the voice server, with which the telecommunications terminal 10b is connected, does not offer the service as provided by the invention. The program according to the invention ends. It is a classic interrogation of a classic voice server such as existing in the state of the art. If so, the voice server 20, by introducing this predetermined value equal to 08H, has the service according to the invention. The processor 10b then goes to step E604.

In step E604, the processor 11b controls the means for detecting frames V23 and for generating DTMF signals 14b so that the latter generates a DTMF signal thus informing the voice server 20 of the taking into account of the frame V23 detected at step E602 by the telecommunications terminal 10b.

Once this has been done, the processor 11b then goes to step E605 and waits for the reception of a data frame V23. This data frame consists of a header byte equal to the value 80H coded in hexadecimal. This message is transmitted by the voice server 20 via the telecommunications network 30, the link 31, and detected and decoded by the frame detection means V23 and generation of DTMF signals 14a.

Upon detection of the header 80H, the processor 1 lb goes to the next step E606 and decodes the data in accordance with those described with reference to step E507 in FIG. 5.

This data includes at least one telephone number.

These decoded data are stored in step E607 in the memory 12b. If the telecommunications terminal 10b has a screen, the content of these is then displayed on this screen. Once this data has been stored, the processor 11b goes to the next step E608 which consists in verifying whether the user of the telecommunication terminal has selected via the keyboard of his telephone handset 35 a telephone number previously received in step E606. . This verification is carried out by means of detection of V23 frames and generation of DTMF signals 14b via its connection with link 33.

If no telephone number is selected, the program according to the invention stops. If a telephone number has been selected the processor 11b goes to step

E609 controls the loop control circuit 19b so that it activates.

Once this step has been completed, the processor 11b goes to step E610 and controls the relay Ra so as to disconnect the telephone handset from the link 31, therefore from the communication network 30 and connect it to the loop circuit 19. A connection is thus simulated. It should be noted that certain types of telecommunications terminals, when the current in the current loop between the telecommunications network 30 and the telephone handset 35 is canceled, automatically cut the communication. This is particularly troublesome for the invention. Indeed, the telecommunications terminal 10b will generate a call to the telephone number selected in step E608 and if the telephone handset is hung up, the telecommunications terminal will not be able to establish communication between the parties. Another solution nevertheless consists in generating a ringing signal to call the telephone handset 35, this solution is expensive. Once this step has been completed, the processor 11b goes to step E611 and controls the relay Rb so as to connect the line interface 13b to the telecommunications network 30.

The processor 11b generates in step E612 a command intended for the line interface 13b so that the latter connects to the telecommunications network 13a.

This step carried out, the processor 11b in step E613 reads the telephone number selected in memory 12b, for example the telephone number of the telecommunications terminal 33 and transfers it by means of frame detection V23 and generation of DTMF signals 14b. The frame detection means V23 and generation of DTMF signals 14a then generates in step E614 the DTMF signals corresponding to the telephone number of the telecommunications terminal 33 and transfers the DTMF signals to the line interface 13b. It should be noted that the processor 1 lb can, as a variant, generate a waiting audible signal intended for the loop control circuit 19b during steps E609 to E615.

When the telecommunication terminal 33 goes off-hook, the processor 11b in step E615 controls the relays Ra and RB so that the telephone handset 35 is connected to the telecommunications network 30 and therefore to the telecommunications terminal 33.

Thus, the telecommunications terminal 10b has established communication automatically between a telephone handset 35 and a telecommunications terminal 33 after the reception of a telephone number via the telecommunications network 30.

Fig. 7 shows the algorithm performed by the server communicating at least one telephone number to the telecommunications terminal according to the invention.

When the application is launched, the processor 21 reads from the memory 22, the instructions of the program corresponding to steps E700 to E711 of FIG. 7 and loads them into RAM 23.

The server is for example a voice server 20.

In step E700, a call originating from a telecommunication terminal is detected by the line interface 26 connected to the telecommunication network 30, the voice server 20 then establishes a communication with the calling telecommunication terminal.

Once this step has been completed, the processor 21, in step E701, controls the means 27 for detecting DTMF signals and for generating frames V23 so that the latter generates, via the line interface 26, a signal SAT to destination of the telecommunications terminal calling for example the telecommunications terminal 10.

The SAT signal is a dual frequency signal (2130Hz and 2750 Hz) which is transmitted over a TSAT time between 80 and 85 milliseconds (ms). This signal is transmitted by the voice server 20 via the telecommunications network 30.

Following the sending of the SAT message, the processor 21 goes to step E702 which consists in verifying whether a DTMF response signal D has been received by the means 27 for detecting DTMF signals and for generating frames V23.

If not, the processor 21 goes to step E703 which consists in verifying whether the time allocated for receiving the response signal DTMF D has elapsed or not. The time allocated for receiving the DTMF D response signal following the sending of the SAT message is for example 200 ms.

If this time has not elapsed, the processor 21 returns to step E702 previously described. The processor 21 performs the loop consisting of steps E702 and E703 until a DTMF D response signal has not been received or until the time allocated for receiving the DTMF D response signal has elapsed.

If the timeout has elapsed, this means that the telecommunications terminal 10 does not have a means for generating frame detection V23, the processor 21 then proceeds to step E704.

In step E704, the processor 21 reads a voice message in the form of blocks from the voice memory 24 and transfers it to the line interface 26.

The voice message is sent in the form of blocks in response to commands issued by the caller. Each voice message block is prerecorded and stored with an appropriate address in the voice memory 24. In general, a welcome message is sent upon connection between the voice server 20 and the telecommunications terminal 10, then a specific message is issued each time the user of the telecommunications terminal 10a presses a key on the keyboard 16a forming a command to the voice server 20 or each time that the user of the telecommunications terminal 10b presses a key on the telephone handset 35 forming a command to the voice server 20.

This generation of voice messages is conventional, it will not be described.

If a DTMF response signal D has been received by the means 27 for detecting DTMF signals and for generating frames V23 in step E702, the processor 21 goes to step E705.

In step E705, the processor 21 controls the means 27 for detecting DTMF signals and for generating frames V23 so that the latter generates a sequence of signals constituting a data frame V23 intended for the telecommunications terminal 10 by the via the network interface 26 and the telecommunications network 30.

This data frame consists of a set of four bytes.

The data frame is a frame allowing to select a terminal with a specific function. This data frame will be described with reference to Figs. 8 and 9. Once this step has been completed, the processor 21 then goes to step E706 which consists in verifying whether a DTMF response signal has been received by the means 27 for detecting DTMF signals and for generating frames V23. This response signal is a signal

DTMF indicating that the message transmitted in step E705 is taken into account by the telecommunication device 10.

If not, the processor 21 goes to step E707 which consists in checking whether the time allocated for receiving the DTMF response signal has elapsed or not.

The time allocated for receiving the DTMF response signal following the sending of the SAT message is for example 200 ms.

If this time has not elapsed, the processor 21 returns to step E706 previously described.

The processor 21 performs the loop consisting of steps E706 and E707 until a DTMF response signal has not been received or until the time allocated for receiving the DTMF response signal has elapsed.

If the timer has expired, this means that the telecommunications terminal 10 does not have the functionality presented in the message sent in step E705, the processor 21 then goes to step E708.

In step E708, the processor 21 reads from voice memory 24 a voice message in the form of blocks and transfers it to the line interface 26 in a similar manner to that described previously with reference to step E704.

If a DTMF response signal has been received by the DTMF signal detection means 27 and signal generation V23 in step E706, the processor proceeds to step E709. In step E709, the processor 21 generates a command intended for the means 27 for detecting DTMF signals and for generating frames V23 so that the latter generates a data frame V23 intended for the telecommunications terminal 10 via the line interface 26 and the telecommunications network 30.

This data frame consists of a header byte equal to the value 80H coded in hexadecimal and of data.

The processor 21 then generates a command for the means 27 for detecting DTMF signals and for generating V23 frames so that the latter transfers the data read from the data memory in the form of a V23 frame. 25 and corresponding to the request from the user of the telecommunications terminal in the frame comprising the header 80H.

This data includes at least one telephone number. This data may include a telephone number that the user of the telecommunications terminal 10 has obtained from a voice telephone information server. They may also include the name of the subscriber with this telephone number. They can also include a plurality of telephone numbers corresponding to the criteria generated by the user of the telecommunications terminal 10. This data can include a telephone number that the user of the telecommunications terminal 10 has obtained from a voice server capable of give the last telephone number of a correspondent who tried to call the user of the telecommunications terminal 10. They may also include the name of the subscriber having this telephone number. They can also include a plurality of telephone numbers of correspondents who have tried to call and / or called the user of the telecommunications terminal 10.

This data can also include the telephone numbers of correspondents that the user of the telecommunications terminal 10 has recorded in a directory of a voice server. It should be noted that, as a variant, the processor 21 modifies the stored telephone numbers so as to make these directly usable by the telecommunications terminal 10. In fact, if the telephone number is a foreign subscriber number, the server 20 inserts the call sign of a foreign call, that is to say “00”, into the telephone number. Also, when the telecommunications terminal 10 is placed behind a PABX, the server 20 inserts at the beginning of the telephone number the digit "0".

The processor 21 then generates in step E710 the transfer of a voice message which is for example the sound representation of the data previously sent in step E709. Finally, the processor waits at step E711 for the disconnection of the telecommunications terminal 10 to return to step E700 to wait for a new call to be processed.

Thus, the server according to the invention has inserted, into a signal transmitted to the telecommunications terminal 10, a dialing command call signal by said second terminal of the at least one transferred telephone number, in this case by inserting the 08H byte in a V23 frame.

As a variant, the telecommunication terminal 33 implements a variant of the algorithm described above. The telecommunication terminal 33 has, for example, an architecture similar to that of the telecommunication device 10a described with reference to FIG. 2, the means for generating DTMF signals and for receiving V23 frames also being capable of transmitting V23 frames.

The user of the telecommunications terminal 33 dials the telephone number of the telecommunications terminal 10. Following the establishment of the communication, the telecommunications terminal

33 generates a SAT signal for the telecommunications terminal 10.

If a DTMF D response signal is received by the telecommunications terminal 33, the latter generates a data frame V23 comprising the call control signal intended for the telecommunications terminal 10 via the telecommunications network 30.

Upon receipt of a confirmation message, the telecommunications terminal 33 generates a data frame V23 intended for the telecommunications terminal 10 via the line interface 26 and the telecommunications network 30.

This data frame consists of a header byte equal to the value 80H coded in hexadecimal and of data comprising inter alia the telephone number of the telecommunications terminal 33.

Finally, the user of the telecommunications terminal 33 disconnects from the telecommunications network 30.

Thus, the telecommunications terminal 33 according to the invention has inserted, in a signal transmitted to the telecommunications terminal 10, a dialing command call signal by said second terminal of the at least one transferred telephone number, in this case by inserting byte 08H in a V23 frame and thus causes an automatic call from the telecommunication terminal 10 to the telecommunication terminal 10. Of course, the telecommunication terminal 10 also comprises means for deactivating the network connection control means. telecommunication following disconnection from the telecommunication network. This is done for example by displaying on the screen of the telecommunications terminal a message inviting the user of the telecommunications terminal to press on a button for accepting this reminder or a button for refusing this reminder, at the same time presenting the telephone number of the communication terminal 33.

This type of functionality allows calls of the PCV type to be made automatically. Fig. 8 represents a table comprising the various elements of a V23 data frame sent by the server according to the invention.

The data frame V23 transmitted by the voice server in step E705 of FIG. 7 and received by the telecommunications terminal 10a in step E503 or by the telecommunications terminal 10b in step E602 consists of four bytes of data. The table in FIG. 8 consists of four columns denoted 81 to 84 and four rows 85 to 88.

Column 81 contains the number of the byte in the V23 frame considered, column 82 contains the binary value of the byte considered, column 83 contains the hexadecimal value of the byte considered and column 84 the meaning of the byte considered.

The first byte in line 85 has a binary value of 0100 0000 or 40H in hexadecimal. This byte represents a code identifying that the content of the frame relates to a request from the voice server 20 in order to interrogate the telecommunications terminal 10 if it includes a predetermined function. The second byte in line 86 counts the bytes composing the message which follow this byte. In our example, this byte 85 has a binary value of 0000 0010 or 02H in hexadecimal.

The third byte in line 87 determines the type of information in this frame.

This byte can be representative of a type of connection as in our invention as described and is then equal to the binary value of 0000 0001 or 01H in hexadecimal. This third byte allows in other applications to define for example the number of multiple subscribers or Multiple Subscriber Number MSN.

The last byte in line 88 contains the code associated with the type of connection. This code takes the different values described with reference to FIG. 9. Fig. 9 represents a table summarizing the different types of connections included in the fourth byte of the V23 data frame of FIG. 8.

The table in FIG. 9 is made up of three columns marked 901 to 903 and nine rows 904 to 912. Column 901 contains the possible binary value of the byte considered, column 902 contains the hexadecimal value of the byte considered and column 903 the meaning of the byte considered.

Lines 904 to 911 are standard and described in standard ETSI EN 300 659-3 Access and Terminal; Public Switch Telephone Network; Subsciber A protocol over the local loop for Display (and related) services; Data link message and parameter codings. They will not be described in detail.

Line 912 includes a binary value byte 0000 1000, in hexadecimal 08H which is a new code allowing the voice server 20 or a telecommunications terminal 33 according to the invention to transmit a command call type message. This “command call” message indicates to the telecommunication terminals 10 that the server 20 wishes the telecommunication terminal 10 to execute, following the transfer of the at least one telephone number, a disconnection and an automatic call to the transferred telephone number. This new code also allows the telecommunications terminal receiving it in a frame to automatically disconnect from the telecommunications network, connect to it and dial a telephone number received through the network. telecommunication.

Fig. 10a represents a table describing the content of a V23 data frame in which the server according to the invention communicates a telephone number to the telecommunications terminal 10.

The data frame is transmitted by the server 20 in step E714 of FIG. 7 and is received by the telecommunications terminal 10a in step E507 or by the telecommunications terminal 10b in step E606. The table in FIG. 10a consists of four columns denoted 101 to 104 and a number of five rows 105 to 109.

Column 101 contains the number of the byte in the frame considered, column 102 contains the binary value of the byte considered, column 103 contains the hexadecimal value of the byte considered and column 104 the meaning of the byte considered.

Lines 105 to 109 are classic and described in standard ETSI EN 300 659-3 Access and Terminal; Public Switch Telephone Network; Subsciber A protocol over the local loop for Display (and related) services; Data link message and parameter codings. They will not be described in detail. Fig. 10b represents a table describing the content of a V23 data frame in which the server according to the invention communicates to the telecommunications terminal 10 the name of the user of the telecommunications terminal 30 associated with the telephone number communicated according to FIG. 10a. The data frame is transmitted by the server 20 in step E714 of FIG. 7 and is received by the telecommunications terminal 10a in step E507 or by the telecommunications terminal 10b in step E606.

The table in FIG. 10b consists of four columns denoted 1 1 1 to 114 and a number of five lines 115 to 119. Column 111 contains the number of the byte in the frame considered, column 112 contains the binary value of the byte considered, column 113 contains the hexadecimal value of the byte considered and column 114 contains the meaning of the byte considered.

Lines 115 to 119 are standard and described in standard ETSI EN 300 659-3 Access and Terminal; Public Switch Telephone Network; Subsciber A protocol over the local loop for Display (and related) services; Data link message and parameter codings. They will not be described in detail.

Fig. 10c represents a table describing the content of a data frame

10a.

The data frame is transmitted by the server 20 in step E714 of FIG. 7 and is received by the telecommunications terminal 10a in step E507 or by the telecommunications terminal 10b in step E606.

The table in FIG. 10c consists of four columns denoted 1201 to 1204 and a number of ten rows 1205 to 1214.

Column 1201 contains the number of the byte in the frame considered, column 1202 contains the binary value of the byte considered, column 1203 contains the hexadecimal value of the byte considered and column 1204 the meaning of the byte considered.

Lines 1205 to 1214 are classic and described in standard ETSI EN 300 659-3 Access and Terminal; Public Switch Telephone Network; Subsciber One protocol over the local loop for Display (and related) services; Data link message and parameter codings. They will not be described in detail.

Of course, the present invention is not limited to the embodiments described here, but encompasses, quite the contrary, any variant within the reach of ordinary skill in the art.

Claims

1) Telecommunications terminal (10) for automatic dialing of a telephone number, the telecommunications terminal being connected to a telephone telecommunications network (30) comprising a second telecommunications terminal (20), the telecommunications terminal for the automatic dialing of a telephone number receiving, by connection with said second telecommunications terminal via the telecommunications network, at least one telephone number identifying at least a third telecommunications terminal (33), characterized in that the terminal for automatically dialing a telephone number comprises: - means (14) for detecting, in a signal transmitted by the second telecommunications terminal, a command call signal,

- means (12) for storing said or each received telephone number,

- means (11, 13) for controlling disconnection from the telecommunication network following the detection of the command call signal, - means (11, 13) for controlling connection to the telecommunication network following disconnection from the network telecommunications,

- Means (11, 14) for controlling the composition of the stored number or number to establish a telephone communication with the third telecommunications terminal.

2) Terminal according to claim 1, characterized in that the second telecommunications terminal is a server.

3) Terminal according to claim 1 or 2, characterized in that it comprises means (14) of detection and generation of voice frequency signals to detect, in the signal transmitted by said second telecommunications terminal in the form of a frame conforming to protocol V23, the command call signal.

4) Terminal according to any one of claims 1 to 3, characterized in that the telecommunications terminal for the automatic dialing of a telephone number comprises a screen (15a) for viewing the at least one number of telephone received and a keypad (16a) for selecting a number from the at least one telephone number received.

5) Terminal according to any one of claims 1 to 3, characterized in that the telecommunication terminal for the automatic dialing of a telephone number is also connected to a fourth telecommunication terminal (35) and that it comprises means (Ra, Rb) for connecting and / or disconnecting the fourth telecommunications terminal from the telecommunications network.

6) Telecommunication terminal according to claim 5, characterized in that the telecommunication terminal for the automatic dialing of a telephone number further comprises means for generating a loop current (19b) when the fourth telecommunication terminal is disconnected from the telecommunications network by the telecommunications terminal for automatic dialing of a telephone number.

7) Telecommunication terminal according to claim 6, characterized in that the telecommunication terminal for the automatic dialing of a telephone number comprises means (31, 14b) for generating signals on the telecommunication network when the fourth terminal of telecommunication is connected to the telecommunication network.

8) Telecommunication terminal according to any one of claims 1 to 7, characterized in that the telecommunication terminal further comprises means for deactivation of control means for connection to the telecommunication network following disconnection from the telecommunication network.

9) Method for automatically dialing a telephone number in a first telecommunications terminal connected to a telephone telecommunications network comprising a second telecommunications terminal, the first telecommunications terminal receiving, by a connection with said second telecommunications terminal by l 'intermediary of the telecommunications network, at least one telephone number identifying at least a third telecommunications terminal, characterized in that the method comprises the steps of: - detection (E504, E603) in a signal transmitted by the second telecommunications terminal of a command call signal,

- storage (E508, E607) of said or each telephone number received,

- disconnection (E510, E610) from the telecommunications network following the detection of the command call signal,

- connection (E511, E611, E612) to the telecommunications network following disconnection from the telecommunications network,

- dialing (E515, E614) of or a stored number to establish a telephone call with the third telecommunications terminal.

10) Method according to claim 9, characterized in that the second telecommunications terminal is a server.

1 1) Method according to claim 9 or 10, characterized in that the detection step consists in detecting, in the signal transmitted by said second telecommunications terminal in the form of a frame conforming to the V23 protocol, the call signal control.

12) Method according to any one of claims 9 to 11, characterized in that the method further comprises the steps of viewing the at least one received telephone number and selecting a number from the at least one telephone number received.

13) Method according to any one of claims 9 to 11, characterized in that the first telecommunications terminal is further connected to a fourth telecommunications terminal and in that the method further comprises the steps of connection and / or disconnection (E610, E615) of the fourth telecommunications terminal in the telecommunications network.

14) Method according to claim 13, characterized in that the method further comprises a step of generation (E609) of a loop current when the fourth telecommunications terminal is disconnected from the telecommunications network by the first telecommunications terminal. 15) Method according to claim 14, characterized in that the method receives and generates (E602, E604, E614) signals on the telecommunications network when the fourth telecommunications terminal is connected to the telecommunications network.

16) Method according to any one of claims 9 to 15, characterized in that the method comprises a step of deactivation of the control means for connection to the telecommunications network following the disconnection of the telecommunications network.

17) Telecommunication terminal called first telecommunication terminal connected to a telephone telecommunication network comprising a second telecommunication terminal, the telecommunication terminal transferring by connection with said second telecommunication terminal via the telecommunication network at least one number telephone identifying a third telecommunication terminal, characterized in that the first telecommunication terminal comprises means (21, 27) for inserting, in a signal transmitted to the second telecommunication terminal, a command call signal for composition by said second terminal of at least one transferred telephone number.

18) Telecommunications terminal according to claim 17, characterized in that the telecommunications terminal is a server of a telecommunications network.

19) Telecommunication terminal according to claim 17, characterized in that the first telecommunication terminal is the third telecommunication terminal.

20) Method for transferring information in a telecommunication terminal connected to a telephone telecommunication network comprising a second telecommunication terminal, the method transferring at least one via a connection with said second telecommunication terminal via the telecommunication network telephone number identifying a third telecommunications terminal, characterized in that the method includes an insertion step (E705) in a signal transmitted to the second telecommunication terminal of a dialing control call signal by said second terminal of the at least one transferred telephone number.

21) Method according to claim 20, characterized in that the telecommunications terminal is a server of a telecommunications network.

22) Computer program stored on an information medium, said program comprising instructions making it possible to implement the composition method according to any one of claims 9 to 16, when it is loaded and executed by a computer system .

23) A computer program stored on an information medium, said program comprising instructions making it possible to implement the transfer method according to claim 20 or 21, when it is loaded and executed by a computer system.

24) Signal transmitted over a telecommunications network by a first telecommunications terminal in a connection to a second telecommunications terminal via the telecommunications network, characterized in that the signal includes information representative of a call command command to establish a connection to the telecommunications network following disconnection from the telecommunications network.