EP1889447A2

EP1889447A2 - Accessing a multimedia service from a mobile terminal

Info

Publication number: EP1889447A2
Application number: EP06794456A
Authority: EP
Inventors: Nicolas Loque; Tiphaine Marie; Jérémy BLANC
Original assignee: France Telecom SA
Current assignee: Orange SA
Priority date: 2005-06-06
Filing date: 2006-05-24
Publication date: 2008-02-20
Also published as: FR2886802A1; US20080234004A1; WO2007003820A2; WO2007003820A3

Abstract

The invention concerns a method for accessing a multimedia service designated by a call number in a mobile terminal (TM) connected to a radio communication network (RR), wherein a server (SO) predefines a correspondence table (TCT) including call numbers associated respectively with service identifiers (IDS) and transmits it to the mobile terminal which stores it. When a call number (NA) is dialled and validated by a channel seizure key on the terminal, an application (AM) determines the service identifier associated with a call number in the table and requests a communication to be set up with a server (SW) providing a multimedia service based on the determined service identifier. Optionally, the call number is transmitted to the server so that the latter may transmit a confirmation message including the call number or an address associated with the call number so that the application may request the communication to be set up.

Description

Accessing a multimedia service from a mobile terminal

The present invention relates to access to a multimedia service from a mobile terminal attached to a cellular radio network.

Currently, online multimedia services provided by an operator managing a cellular radio network are accessible from mobile terminals incorporating a graphical interface and managing menus and submenus for accessing the services. Each mobile terminal manufacturer has its own implementation of said menus. Moreover, these menus are not always ergonomic and intuitive for most users with a mobile terminal whose use is often limited to dialing a number to establish a call.

There is therefore a need to have a mode of access to a multimedia service based on the composition of a number and adapted to the habits of users.

The invention aims to automatically access a multimedia service from a mobile terminal by dialing a call number on the mobile terminal to overcome the aforementioned drawbacks.

To achieve this objective, a method for accessing a multimedia service designated by a call number in a mobile terminal attached to a radio network, is characterized in that it comprises in the mobile terminal the steps of: determining, after a call number validation, a service identifier associated with the call number in a correspondence table comprising call numbers associated respectively with service identifiers, and requesting the establishment of a call with a server providing a multimedia service according to the determined service identifier.

The user of the mobile terminal accesses a multimedia service simply by dialing a call number associated with said multimedia service, the user no longer having to use menus and submenus to access the service. The user therefore does not require any particular knowledge of the sometimes complex functionalities of the mobile terminal and quickly accesses the multimedia service in the same way as a conventional call.

Furthermore, the unique association of the numbers to the respective multimedia services in the correspondence table confers a universal character on the use thereof according to the invention in the different types of mobile terminals which each have their own implementations.

The invention also relates to a terminal for accessing a multimedia service designated by a call number in a mobile terminal attached to a radio communication network, which is characterized in that it comprises: means for determining, after a validation of the call number, a service identifier associated with the call number in a correspondence table comprising call numbers associated respectively with service identifiers, and means for requesting the establishment of a communication with a server providing a multimedia service according to the determined service identifier.

The invention also relates to two embodiments of a server authorizing access to a multimedia service designated by a call number in a mobile terminal attached to a radio network.

According to a first embodiment, the call number is transmitted to the network and analyzed by the server which in response retransmits it to the mobile terminal. The server then comprises a table of correspondences between call numbers and user identifiers, and transmits a confirmation message comprising the call number to the mobile terminal if it finds a correspondence between the call number transmitted by the mobile terminal and a user identifier transmitted by network registering means in the correspondence table, so that the mobile terminal retrieves the call number of the confirmation message received by the mobile terminal to determine the associated service identifier to the phone number.

In a second embodiment, the call number is transmitted to the network and analyzed by the server which in response transmits a URL associated with the call number to the mobile terminal. The server then comprises a table of correspondences between call numbers and user identifiers, and transmits the address associated with the call number to the mobile terminal if it finds a correspondence between the call number transmitted by the mobile terminal and a user identifier transmitted by a registering means of the network in a correspondence table, so that the mobile terminal requires the establishment of a communication with a server providing a multimedia service designated by the address.

The invention also relates to a computer program adapted to be implemented in a terminal for accessing a multimedia service designated by a call number in a mobile terminal attached to a radio communication network, said program comprising instructions which, when the program is loaded and executed on said terminal, realize in accordance with the method of the invention the steps of: determining, after a validation of the call number, a service identifier associated with the call number in a correspondence table comprising call numbers associated respectively with service identifiers, and requiring the establishment of a communication with a server providing a multimedia service according to the determined service identifier.

Finally, the invention relates to a method for providing a computer program for downloading from a first server in a mobile terminal to access a multimedia service designated by a call number in the mobile terminal attached to a mobile terminal. radio network, said program comprising instructions which, when the program is loaded and executed in said terminal, perform the steps according to the method of the invention. According to another characteristic of the provision of the computer program, the first server authorizes access to the multimedia service designated by the call number in the mobile terminal, if the first server finds a correspondence between the number of call transmitted by the mobile terminal and a user identifier.

Other features and advantages of the present invention will appear more clearly on reading the following description of several preferred embodiments of the invention, given by way of non-limiting examples, with reference to the corresponding appended drawings in which: FIG. 1 is a schematic block diagram of a telecommunications system for accessing a multimedia service from a mobile terminal according to

The invention;

FIG. 2 is an algorithm of a method for accessing a multimedia service from a mobile terminal according to a first embodiment of the invention; and

FIG. 3 is an algorithm of a method for accessing a multimedia service from a mobile terminal according to a second embodiment of the invention.

With reference to FIG. 1, a mobile terminal TM is provided to a user by an operator who manages a digital cellular radiocommunication network RR. For example, the RR radio network is of the GSM type. In FIG. 1, only the main elements of the location area of the RR network where the mobile terminal TM is at a given instant are represented. Location area comprises a mobile service switch MSC which is connected through a base station controller BSC to a base station BTS connected by a radio link to the mobile terminal TM. As is known, the RR network also includes a home location register HLR connected to several VLR visitor location recorders, including that connected to the MSC switch of the location area considered. The HLR recorder is analogous to a database containing for each user including an International Mobile Subscriber Identity (IMSI) attached to the user, the subscription profile of the user and the number of the VLR recorder to which the mobile terminal TM is attached momentarily. The VLR acts as a relay for the HLR in the location area and contains the characteristics of the users whose mobile terminals are located in the location area.

An SO operator server, as an OTA (Over The Air) service platform, is managed by the RR network operator. According to the embodiment illustrated in FIG. 1, the operator server SO transmits data messages to the mobile terminal TM through a short message service center SC. The SC server comprises an access gateway for communicating with the SO operator server through a high-speed RT telecommunications network, in particular the Internet, or alternatively an intranet network, and another access gateway for communicate with at least the aforementioned MSC mobile service switch, through a network RA access network such as an X.25 type packet network or an ISDN or ATM network. The packets transmitted by the server SO are formatted in the SC server into Short Message Service (SMS) short messages and / or Multimedia Messaging Service (MMS) multimedia messages transmitted to the mobile terminal TM.

According to a first variant, the server SC is directly connected or is incorporated in the switch MSC and the operator server SO is directly connected or is incorporated in the home location register HLR which allows the server SO to benefit directly from the stored data in the HLR recorder.

According to a second variant, the short message server SC and the access network RA are replaced by an access network of the packet-switched network type with mobility management and radio access GPRS (General Packet Radio Service) . The telecommunications network RT is then connected to a gateway node GGSN (Gateway GPRS Support Node) to the GPRS network, and the base station controller BSC is connected through a service node SGSN (Serving GPRS Support Node). The advantage of this variant is to transmit messages in the form of packets with much higher rates.

According to a third variant, the cellular radiocommunication network RR is of the third generation, that is to say is a UMTS network. In this case, the BSC controller and the BTS base station are grouped in the UMTS Terrestrial Radio Access Network (UMTS).

Conventionally, a database BD is linked to the operator server SO, that is to say it is either integrated in the SO operator server, either embedded in a database management server and connected to the operator server by a local or remote link. The database BD notably comprises information necessary for carrying out the invention, such as a TCT correspondence table comprising call numbers NA and IDS service indicators and a TCS correspondence table comprising call numbers. NA and IDU user identifiers.

An SP partner server attached to the RR network optionally contains the TCT correspondence table in a memory. Alternatively, the partner server SP and the SO operator server are combined into or integrated into a single server that is related to or that includes the database BD.

The mobile terminal TM conventionally comprises an IR radio interface, a PT processor and MT memories. The various elements of the terminal are interconnected by a bidirectional bus BT. The memories MT group various memories such as ROM, non-volatile memory EEPROM and RAM. The IR radio interface transposes into frequency, digitally converts, demodulates and decodes messages received via the RR network, and conversely transmits messages. The MT memories in the terminal TM contain in particular an operating system, a runtime environment such as for example a Java virtual machine, and an ED data space for storing data such as a TCT correspondence table. comprising DN call numbers and IDS service indicators.

In the non-volatile memory of MT memories are implemented mobile applications, initially written in a high-level language of the object-oriented type such as the Java language compatible with the virtual machine. In particular, an AM mobile application specific to the invention analyzes the TCT correspondence table in order to control access to multimedia services, such as access to the Internet.

As a variant, the mobile application AM and the data space ED are implemented in a memory of a smart card, also called a microcontroller card or an integrated circuit card, constituting a user identity module of the type UICC (Universal Integrated Circuit Card) removable mobile terminal and connected by electrical contact or without electrical contact to the mobile terminal. The smart card is for example a SIM card for a GSM or GPRS type cellular radio network, or a Universal Subscriber Identity Module (USIM) for a code division multiple access (CDMA) network. Access) of the third generation (3GPP) of the UMTS type.

In the remainder of the description, the mobile terminal TM will be called the terminal with the chip card of the removable user identity module type. Preferably, the mobile terminal TM is a mobile cellular radio terminal. As a variant, the mobile terminal TM is a communicating personal digital assistant (PDA), or a smart phone (SmartPhone), which can communicate with the RR network and exchange orders and responses with a smart card.

According to another variant, the mobile terminal TM comprises a touch screen and features necessary for the interpretation of actions on the touch screen.

According to yet another variant, the mobile terminal TM comprises miniature accelerometers capable of detecting and interpreting movements of the mobile terminal in the space at the user's initiative, such as a movement simulating a handset stall to control a channel socket in the mobile terminal.

According to yet another variant, the mobile terminal TM comprises a voice recognition engine capable of interpreting voice commands spoken by the user.

According to the invention, the digital cellular radiocommunication network RR offers multimedia services accessible from the mobile terminal TM attached to the network RR. A multimedia service is a service providing multimedia documents. A multimedia document is a digital file comprising text and / or sound and / or at least one image and / or at least one video sequence. To access an online multimedia service, the mobile terminal contains a browser that exchanges data for example in Wireless Markup Language (WML) or Extensible Hypertext Markup Language (XHTML) format with a SW website server connected to the RT telecommunications network. according to the WAP (Wireless Application Protocol) communication protocol. The user can consult for example movie schedules or weather information bulletins on websites using the mobile terminal. In order not to overload Figure 1, there is shown only a web site server SW managing at least one website.

According to a first embodiment shown in FIG. 2, the method of access to a multimedia service according to the invention comprises steps E1 to E4 executed automatically in the mobile terminal TM and preceded by preliminary steps E01 to E03. In step E01, the operator server SO predefines a TCT correspondence table comprising call numbers NA associated respectively with IDS service identifiers. For example, a call number NA is 6-3-8 corresponding to the keys N-E-T of the keyboard of the mobile terminal TM, this number being short and easily comparable to the service "internet" for the user. In another example, the call number NA is 6-3-8-3-6 corresponding to the METEO keys of the keypad of the terminal, this number being associated with an IDS service identifier which is relative to an IP Internet address to consult weather bulletins.

In step E02, the TCT correspondence table and the AM mobile application necessary for the interpretation of the TCT correspondence table are downloaded from the operator server SO into the mobile terminal TM. The step E02 is executed on the initiative of the user who wishes to subscribe to a service implementing the method of the invention. For example, the user of the mobile terminal TM calls an operator's customer center in order to choose a list of services respectively corresponding to the IDS service identifiers of the correspondence table TCT and the operator server SO downloaded to the terminal mobile user an installation kit comprising in particular the AM application, the TCT correspondence table and an installation program.

In the step E03, the received correspondence table TCT is stored in the data space ED of the mobile terminal TM and the mobile application AM is stored in the non-volatile memory of the memories MT of the mobile terminal or in a memory of the smart card connected to the mobile terminal. Preferably, the storage of the application AM and of the correspondence table TCT is performed automatically, for example by means of the installation program provided by the operator server.

As a variant, the mobile application AM and the correspondence table TCT are already stored in the mobile terminal TM, if the user wishes to access other services via other call numbers, the server D operator transmits to the mobile terminal of the user an update message comprising only a new correspondence table which is stored in the mobile terminal and combined with the TCT correspondence table already stored.

In another variant, the mobile application AM and the correspondence table TCT are stored in the mobile terminal TM before the sale of the latter, for example during the implementation of the mobile terminal by the manufacturer of the mobile terminal. this.

In another variant, the correspondence table TCT is stored in a memory of an electronic device external to the mobile terminal TM and accessible by the mobile application AM. For example, the electronic device is a communicating personal digital assistant (PDA), a smartphone (SmartPhone), a computer personal, or a USB key, communicating with the mobile terminal through a respective appropriate link.

In another variant, the correspondence table TCT is stored in a memory of the partner server SP whose address has been previously entered or downloaded to the mobile terminal or stored in the mobile terminal before the sale of the latter. The mobile application accesses the TCT correspondence table by interpreting said address of the partner server.

The mobile terminal is then configured to access multimedia services via predefined call numbers and chosen by the user as described above.

In step El, the user wishing to access a multimedia service designated by a call number NA dials the call number NA on the keypad of the mobile terminal TM. Alternatively, the call number NA is pre-stored in a directory of the mobile terminal and associated with a directory entry. For example, the entry "METEO" is associated with the number "63836". The user then selects an entry from the directory. Then the user classically validates the call number NA by requesting a special key to take a channel on the mobile terminal but without it transmitting the call number NA to the RR network.

In a variant, the call number NA is entered and then validated according to an interpretation of specific movements of the mobile terminal TM in space by means of miniature accelerometers of the mobile terminal. For example, the number is validated by a signal coming from the accelerometers and which is linked to a channel setting movement. In another variant, the call number NA is entered and validated on the touch screen of the mobile terminal TM.

In another variant, the call number NA is entered and then validated according to voice commands spoken by the user of the mobile terminal, the commands being detected and interpreted by the speech recognition engine of the mobile terminal.

In step E2, the mobile application AM detects, intercepts and stores the dialed or automatically dialed number before any transmission of the DN to the RR network.

In step E3, the mobile application AM determines the IDS service identifier associated with the call number NA in the TCT correspondence table. The intercepted telephone number NA is compared to the telephone numbers included in the TCT correspondence table.

If the intercepted telephone number NA is included in the TCT correspondence table, the mobile application AM reads the IDS service identifier relating to the telephone number. For example, the IDS service identifier contains the URL (Uniform Resource Locator) of a website. If the correspondence table TCT is stored in an external memory accessible by the mobile terminal TM, such as the memory of the partner server SP or an electronic device, the step E3 of determining comprises the establishment of a communication between the mobile application AM and a dedicated application managing said memory in order to transmit the IDS service identifier read to the mobile terminal TM.

In step E4, the mobile application AM then requires the establishment of a communication with a SW website server providing a multimedia service according to the IDS read service identifier. For example, the application AM interprets a URL corresponding to the service identifier read and orders the browser of the mobile terminal a connection to the server SW designated by the URL.

Returning to step E3, if the intercepted telephone number NA is not included in the TCT correspondence table and is for example an International Mobile Subscriber ISDN Number (MSISDN), the application of mobile AM authorizes in a step E31 in a conventional manner the establishment of a communication with a terminal designated by the call number NA, it being transmitted to the RR network.

According to a second embodiment shown in FIG. 3, the compound call number NA is transmitted to the network RR, analyzed by an operator server SO and retransmitted to the mobile terminal TM, according to steps F1 to F7 completing the access method to a multimedia service according to the invention.

Steps E01 to E03 are replaced by steps FO1 to F03 respectively and steps E1 and E2 are replaced by steps F1 to F7.

The step FOI differs from the step E01 in that the operator server SO also predefines a correspondence table TCS comprising call numbers NA each associated with respective identifiers IDU of users according to subscription profiles. users. The identifier IDU of a user indicates to the server SO whether the user has subscribed a subscription authorizing access to the service associated with the received call number NA. The identifier IDU of a user may be a part of the international IMSI identity of the user. The correspondence table TCS is previously transmitted by the recorder HLR to the operator server SO which stores it in the database BD.

The steps F02 and F03 are identical to the steps E02 and E03, the correspondence table TCT and the mobile application AM being transmitted from the operator server SO to the mobile terminal TM and stored therein.

The step F1 is identical to the step E1, a call number NA having been dialed and validated on the mobile terminal TM.

In step F2, the call number NA is transmitted from the mobile terminal TM to the operator server SO through the RR radio network. The call number NA is considered distinct from an international mobile subscriber number MSISDN by the mobile service switch MSC which transmits it as a short message to the operator server SO via the short message server SC. The mobile application AM switches to a standby state listening to any short message reception from the RR network. In step F3, the operator server SO receives the call number NA transmitted by the terminal TM via the home register VLR which signals the transmission of the short message to the recorder HLR so that the latter transmits the message. IDU user identifier to the SO operator server.

In step F4, the operator server SO searches for the call number NA transmitted by the terminal TM in correspondence with the user identifier IDU transmitted by the recorder HLR in the correspondence table TCS. If the server SO notices the correspondence between the transmitted number DN and the user identifier IDU transmitted in the table

TCS, the server goes to the optional step F5 and step F6.

In step F5, the operator server SO stores the user ID IDU transmitted by the mobile terminal TM in association with the call number NA and the date of receipt thereof in the database BD to obtain a history of service requests from the user of the mobile terminal and to bill communications relating to the requested services.

Then, in step F6, the operator server SO transmits a confirmation message MC including in particular the received call number NA to the mobile terminal TM. According to the embodiment shown in FIG. 1, the confirmation message MC is transmitted through the telecommunications network RT in the form of a packet which is transformed by the short message server SC into a short message transmitted to the mobile terminal TM.

In step F7, following receipt of the confirmation message MC in the mobile terminal TM, the mobile application AM intercepts and interprets the confirmation message MC to extract the call number NA.

The method is then continued by steps E3 and E4 to determine the IDS service identifier associated with the call number NA in the TCT correspondence table and require the establishment of a communication with a server providing a multimedia service designated by IDS read service identifier. Returning to step F4, if the correspondence between the transmitted DN and transmitted user ID IDU is absent in the TCS table, the SO server retransmits the received call number NA to the RR network, the call number can be for example a mobile subscriber number MSISDN, or transmits an error message to the mobile terminal TM indicating that the call number NA does not correspond to any available service.

In a first variant, steps F6 and F7 are not executed and the operator server SO transmits no message to the mobile terminal TM. The mobile application AM having previously stored the call number NA in step F2 before it is transmitted to the operator server SO, executes steps E3 and E4 as shown in dashed lines in FIG. 3.

In a second variant, the steps E1, E2 and E3 are executed in the mobile terminal TM after the initial steps FO1 to F03 as indicated in dotted lines in FIG. 3. Then steps F21, F31, F41 and F51 respectively similar to the steps F2, F3, F4 and F5 are executed after step E3 and before step E4 to request the establishment of a communication with a server SW, the mobile application AM having determined no associated service IDS identifier to the DN call number in the TCT correspondence table. In this case, the mobile terminal TM transmits the validated call number NA to the operator server SO in step F21. The server SO receives the user identifier IDU transmitted by the recorder HLR in step F31. Then the server SO looks for a correspondence between the number of call NA and the IDU user identifier in the TCS correspondence table in step F41 to eventually proceed to step F51 and continue with a step F61 if the server SO finds said match.

In step F61, the operator server SO transmits a URL associated with the call number NA to the mobile terminal TM. Then, at a step F71, the mobile application AM interprets the received URL address and requires the browser of the mobile terminal TM to establish a communication with a server SW providing a multimedia service designated by the URL.

The invention described herein relates to a method and a mobile terminal for accessing a multimedia service designated by a call number NA in the mobile terminal attached to a radio network. According to a preferred implementation, the steps of the method of the invention are determined by the instructions of a computer program incorporated in the mobile terminal or an information carrier. The program comprises program instructions which, when said program is loaded and executed in the mobile terminal whose operation is then controlled by the execution of the program, perform the steps of the method according to the invention.

Accordingly, the invention also applies to a computer program, including a computer program on or in an information carrier, adapted to implement the invention. This program can use any programming language, and be in the form of source code, object code, or intermediate code between code source and object code such as in a partially compiled form, or in any other form desirable for implementing the method according to the invention. The information carrier may be any entity or device capable of storing the program. For example, the medium may comprise storage means or recording medium, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or a USB key, or a magnetic recording means, by example a floppy disk or a hard disk.

On the other hand, the information medium may be a transmissible medium such as an electrical or optical signal, which may be conveyed via an electrical or optical cable, by radio or by other means. The program according to the invention can in particular be downloaded to an Internet type network. Alternatively, the information carrier may be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in carrying out the method according to the invention.

Claims

1 - Method for accessing a multimedia service designated by a call number (NA) in a mobile terminal (TM) attached to a radio communication network (RR), characterized in that it comprises in the mobile terminal (TM) the steps of: determining (E3), after a validation (El) of the call number (NA), a service identifier (IDS) associated with the call number (NA) in a correspondence table (TCT) comprising call numbers respectively associated with service identifiers, and require (E4) the establishment of a communication with a server (SW) providing a multimedia service according to the determined service identifier (IDS).

2 - Process according to claim 1, further comprising, before the step of determining (E3) and after the step of validating (El), the steps of: transmitting (F2) the call number (NA) since the mobile terminal (TM) to a server means (SO), transmitting (F3, F4, F6) a confirmation message (MC) comprising the call number (NA) from the server medium to the mobile terminal if the server means finds a correspondence between the call number (NA) transmitted by the mobile terminal and a user identifier (IDU) transmitted by a registering means (HLR) of the network (RR) in a correspondence table (TCS), and extracting ( F7) the call number (NA) of the confirmation message (MC) received by the mobile terminal (TM) to determine (E3) the service identifier (IDS) associated with the call number (NA). The method of claim 1, further comprising prior to the step of requesting (E4), when no service identifier (IDS) associated with the call number (NA) has been determined in the lookup table. (TCT), the steps of: transmitting (F21) the call number (NA) from the mobile terminal (TM) to a server means (SO), transmitting (F31, F41, F61) an address associated with the number of call (NA) from the server medium to the mobile terminal if the server means finds a correspondence between the call number (NA) transmitted by the mobile terminal and a user identifier

(IDU) transmitted by a registering means (HLR) of the network (RR) in a correspondence table (TCS), in order to request (E71) the establishment of a communication with a server (SW) providing a multimedia service designated by the address.

4 - Process according to any one of claims 1 to 3, wherein the correspondence table (TCT) is predefined (EOl) in the server means (SO) and downloaded (E02) from the server means (SO) in the mobile terminal (TM).

5 - Process according to any one of claims 1 to 4, further comprising, before the step of validating (El), a step of storing (E03) the correspondence table (TCT) in the mobile terminal (TM) .

6 - Process according to any one of claims 1 to 4, further comprising, before the step of validating (El), a step of storing (E03) the correspondence table (TCT) in an external memory accessible by the mobile terminal (TM).

7 - Process according to any one of claims 1 to 6, wherein the call number

(NA) is enabled by a channel tap key in the mobile terminal (TM).

8 - Mobile terminal for accessing a multimedia service designated by a call number (NA) in the mobile terminal (TM) attached to a radio network (RR), characterized in that it comprises: means (AM) to determine, after a call number validation (DN), a service identifier (IDS) associated with the call number (NA) in a correspondence table (TCT) comprising call numbers associated with identifiers respectively of service, and means (AM) for requesting the establishment of a communication with a server (SW) providing a multimedia service according to the determined service identifier (IDS).

9 - Server (SO) authorizing access to a multimedia service designated by a call number (DN) in a mobile terminal (TM) attached to a radio communication network (RR), characterized in that it comprises a table (TCS) correspondence between call numbers and user identifiers, and in that it transmits (F3, F4, F6) a confirmation message (MC) including the call number (NA) to the terminal if it finds a correspondence between the number (NA) transmitted by the terminal a user identifier (IDU) transmitted by a registering means (HLR) of the network (RR) in the correspondence table (TCS), so that the mobile terminal retrieved (F7) the call number (NA) of the confirmation message (TM) received by the mobile terminal (TM) for determining (E3) the service identifier (IDS) associated with the call number (NA).

10 - Server (SO) authorizing access to a multimedia service designated by a call number (NA) in a mobile terminal (TM) attached to a radio communication network (RR), characterized in that it comprises a table (TCS) correspondence between call numbers and user identifiers, and in that it transmits (F31, F41, F61) an address associated with the call number (NA) to the mobile terminal if it finds a correspondence between the call number (NA) transmitted by the mobile terminal and a user identifier (IDU) transmitted by a registering means (HLR) of the network (RR) in the correspondence table (TCS), so that the mobile terminal requires (E71) establishment of a communication with a server (SW) providing a multimedia service designated by the address.

11 - Computer program adapted to be implemented in a mobile terminal (TM) to access a multimedia service designated by a call number (DN) in the mobile terminal (TM) attached to a radio network (RR ), said program comprising instructions which, when the program is loaded and executed in said terminal, perform the steps of: determining (E3), after a validation (El) of the call number (NA), a service identifier (IDS) associated with the call number (NA) in a table method (TCT) comprising call numbers (DN) associated respectively with service identifiers (IDS), and requiring (E4) the establishment of a communication with a server (SW) providing a multimedia service according to the determined service identifier (IDS).

12 - Method for providing a computer program for downloading from a first server (SO) in a mobile terminal (TM) to access a multimedia service designated by a call number (DN) in the terminal mobile (TM) attached to a radio network (RR), said program comprising instructions which, when the program is loaded and executed in said terminal, perform the steps of: determining (E3), after a validation (El) of the number call number (DN), a service identifier (IDS) associated with the call number (NA) in a correspondence table (TCT) comprising call numbers (DN) associated respectively with service identifiers (IDS) , and require (E4) establishing a communication with a second server (SW) providing a multimedia service according to the determined service identifier (IDS). 13 - Process according to claim 10, wherein the first server (SO) authorizes access to the multimedia service designated by the call number (NA) in the mobile terminal (TM), if the first server (SO) notes a correspondence between the call number (NA) transmitted by the mobile terminal and a user identifier (UID).