Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
  • H04W4/12—Messaging; Mailboxes; Announcements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
  • H04L51/58—Message adaptation for wireless communication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
  • H04L9/40—Network security protocols
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
  • H04L51/07—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail characterised by the inclusion of specific contents
  • H04L51/10—Multimedia information
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
  • H04L51/21—Monitoring or handling of messages
  • H04L51/224—Monitoring or handling of messages providing notification on incoming messages, e.g. pushed notifications of received messages
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S707/00—Data processing: database and file management or data structures
  • Y10S707/99931—Database or file accessing
  • Y10S707/99933—Query processing, i.e. searching

Definitions

• the present invention relates to a system and method for accessing multimedia files from a first mobile radiotelephone terminal when the multimedia files have been addressed thereto by another terminal.
• the multimedia file can be sent in the form of an electronic message message (e-mail) or by an application of multimedia messaging services MMS (Multimedia Messaging Service), or by an application of the client-server type on the web.
• MMS Multimedia Messaging Service
• the recipient of the multimedia file using the first mobile terminal accesses the multimedia file either by using a personal computer connected to the internet to read it in his electronic mail messaging, or directly from his mobile terminal in the case of an MMS message.
• the multimedia file When the multimedia file is transmitted by an MMS message, that is to say in the form of a “short multimedia” message, the multimedia file is not stored in the telecommunications network, but stored directly in the terminal mobile after transmission via the mobile radiotelephony network of the GSM or GSM / GPRS type serving the mobile terminal.
• the transmission of a multimedia file through the radiotelephone access network of the mobile terminal is all the longer and more expensive the larger the size of the multimedia file.
• the user of the mobile terminal is obliged to delete the files multimedia as the mobile terminal has received them. If a multimedia file is transmitted by electronic mail, the user of the mobile terminal must have an available personal computer and configure it correctly to receive electronic mails with multimedia files transmitted by other users.
• the object of the present invention is to allow a mobile terminal user to store and access numerous multimedia files without limitation in size relative to the storage capacities of his mobile terminal, in order to be able to consult, or even retrieve, permanently. multimedia files transmitted by other users.
• a system for accessing multimedia files through a telecommunications network from a mobile radiotelephone terminal for which messages are intended, each message an address of the mobile terminal and a multimedia file transmitted by second terminals comprising a server for detecting a multimedia file in a message transmitted by the second terminal in order to extract there the address of the mobile terminal and the detected multimedia file, for storing the multimedia file extracted from the message in a storage means, and a means for notification for transmitting a multimedia file storage notification to the mobile terminal identified by the address extracted from the message, is characterized in that the storage means is a storage space which is allocated to the user of the mobile terminal and which is accessible to the mobile terminal through the server so that the file multimedia extracted from the message is stored there in correspondence with the address of the mobile terminal extracted from the message, and in that the mobile terminal accesses the stored multimedia file only if the server has recognized the address of the mobile terminal provided after the establishment of 'a connection between the mobile terminal and the server.
• Access to the file can consist either of a download or of a continuous display according to a technique known to those skilled in the art called "streaming" allowing access to a file before the end of its download.
• streaming a technique known to those skilled in the art
• the example which will serve to illustrate the invention will be file downloading.
• the server understands
• control means for establishing a notification command including the address of the mobile terminal and a text block extracted from the message
• a notification means for transmitting the multimedia file storage notification including the text block to the mobile terminal identified by the address included in the notification command transmitted by the control means.
• the detection means and the control means can be included in a message sorting center connected to an access network to which the second terminal is directly connected, or in a web server accessible to the second terminals through a packet network to broadband via an access network.
• the access system instead of transmitting the multimedia file directly to the mobile terminal according to the prior art, the access system according to the invention intercepts the multimedia file and stores it in a storage means allocated to the user of the mobile terminal, then notifies this storage to the user of the mobile terminal so that the latter can download the stored multimedia file when he wishes.
• the storage means can be a storage area in a server dedicated to storing multimedia files and accessible to the mobile terminal through a web server.
• the transmission of the multimedia file from the storage means to the mobile terminal is carried out either through the radiotelephony network to which the mobile terminal belongs, or through a terminal connected to the internet network and having a proximity link with the mobile terminal.
• the system according to the invention relieves the memory of the mobile terminal from storing too bulky or already played multimedia files and gives access to the storage means through a high speed link which can be connected to the proximity link terminal for the mobile terminal.
• the invention also relates to a method for accessing multimedia files through a telecommunications network from a mobile radiotelephone terminal for which messages are intended, each message including an address of the mobile terminal and a multimedia file transmitted by second terminals, the method comprising, through the telecommunications network, the steps of: detecting a multimedia file in a message transmitted by a second terminal in order to extract there the address of the mobile terminal and the detected multimedia file, - store the multimedia file extracted from the message, and notify the storage of multimedia file by a notification including the identity of the second terminal and transmitted to the mobile terminal identified by the address included in the notification command, the method being characterized by allocation of a storage space accessible through the telecommunications network to the mobile terminal so that the multimedia file extracted from the message is stored there in correspondence with the address of the mobile terminal extracted from the message, and the mobile terminal does not access the file multimedia stored only if the address of the mobile terminal provided by the network after the establishment of a connection between the mobile terminal and the server is recognized.
• the method can comprise a downloading in the mobile terminal or from the mobile terminal of a multimedia file which is stored in correspondence with the extracted address in a storage means assigned to the mobile terminal, via a server through a radiotelephony network to which belongs the mobile terminal when the mobile terminal is not detected by a terminal having a proximity link with the mobile terminal, and through the terminal when the mobile terminal is detected by the terminal.
• the invention also relates to the storage server, characterized in that said storage means is a storage space which is allocated to the user of the mobile terminal and which is accessible to the mobile terminal through the server so that the file multimedia extract of the message is stored there in correspondence with the address of the mobile terminal extracted from the message, the mobile terminal accessing the stored multimedia file only if the server has recognized the address of the mobile terminal provided after the establishment of a connection between the mobile terminal and the server.
• said storage means is a storage space which is allocated to the user of the mobile terminal and which is accessible to the mobile terminal through the server so that the file multimedia extract of the message is stored there in correspondence with the address of the mobile terminal extracted from the message, the mobile terminal accessing the stored multimedia file only if the server has recognized the address of the mobile terminal provided after the establishment of a connection between the mobile terminal and the server.
• the invention relates to the computer program capable of being implemented on a storage server, said program comprising code instructions which, when the program is executed on said server, performs the following steps: detecting a file multimedia in a message transmitted by a second terminal in order to extract there the address of the mobile terminal and the detected multimedia file,
• FIG. 1 is a block diagram of a multimedia file access system according to the invention
• - Figure 2 is an algorithm of a multimedia file transmission method according to the invention
• - Figure 3 is a multimedia file recovery method algorithm according to the invention
• - Figure 4 is an algorithm of multimedia file storage method according to the invention.
• FIG. 1 are shown the essential means of a system for accessing multimedia files according to the invention between a first mobile radiotelephone terminal T1 of a user receiving multimedia files and a second terminal T2 of a second user which can be any sender of multimedia messages.
• the essential means of the access system are linked mainly through a general telecommunications network generally comprising three telecommunications networks RAI, RP and RA2.
• the RAI network is a digital cellular radiotelephony network to which the first mobile terminal T1 belongs.
• the RAI radiotelephony network is a GSM network, or GSM / GPRS, or a UMTS network.
• the mobile terminal Tl is designated by an ATI address constituted by the telephone call number of the mobile terminal Tl, called the international identification number of the mobile user MSISDN (Mobile Station ISDN Number).
• the mobile terminal T1 can communicate with another access network RAF through a terminal BO and a proximity link LP.
• the terminal BO constitutes a fixed terminal of the user having the first mobile terminal Tl, and is installed in the premises of this user.
• the proximity link LP between the terminal BO and the mobile terminal Tl can be a radio link of the Bluetooth type, or according to the 802.11b standard called WiFi, or DECT (Digital Enhanced Cordless Telecommunications), or an infrared link.
• the BO terminal can serve by radio or wired proximity links to other terminals such as a personal computer, a television set and a sound broadcasting receiver or a high-fidelity chain.
• the RAF network can be the switched telephone network, or a user telephone line of the ADSL (Asymmetric Digital Subscriber Line) type which is connected in particular to the second telecommunications network of the system constituting a high-speed packet network RP such as 1 ' Internet .
• the terminal BO is connected directly to a personal computer of the user, in the form of an integrated card or a modem, or a USB module for example.
• the terminal BO continuously and continuously scans for the presence of mobile terminals, such as the terminal Tl, in its field of low radio range.
• the third telecommunications network is an access network RA2 linked to the second terminal T2.
• the access network RA2 is the digital cellular radiotelephone network of the GSM, GSM / GPRS, or UMTS type to which the terminal T2 is linked.
• the access network RA2 is the switched telephone network or comprises a user line of the ADSL type.
• the terminal T2 can be a fixed telephone terminal connected to a fixed telephone line, such as for example a personal computer in which an electronic mail (e-mail) application or a message submission application via a client-server interface has been installed .
• the means making up the multimedia file access system are three in number: a multimedia file detection means and establishment of notification control constituted by a message sorting center CTM or a web server SW, a multimedia file storage means constituted by an SSM server dedicated to the storage of multimedia files, and a notification server SN.
• the CTM sorting center and the SW web server play equivalent roles in the detection and referral of multimedia files. One or both of them can therefore be provided in the access system according to the invention.
• the sorting center CTM is a server connected directly to the access network RA2 of the second terminal T2, for example through a mobile service switch of the radiotelephony network serving the terminal T2 when the latter is a mobile radiotelephone terminal, or to through a PSTN switched telephone network when the terminal T2 is a fixed telephone terminal, or through a broadband packet network such as the internet when the terminal T2 is a terminal of the personal computer type capable of transmitting electronic mail ( E-mail) .
• the CTM sorting center intercepts all messages of the multimedia message type MMS (Multimedia Messaging Service) transmitted by the terminal T2 as a mobile radiotelephone terminal, or of the electronic mail type (e-mail) transmitted by the terminal T2 as personal computer for example.
• MMS Multimedia Messaging Service
• a message of the MMS or e-mail type including an FM multimedia file transmitted by the second terminal T2, regardless of the type of this terminal, is designated by MT2.
• the sorting center CTM thus addressable by any type of second terminal T2 comprises a detection means for detecting the possible presence of an FM multimedia file which is included in a message MT2 transmitted from the terminal T2 to the terminal Tl and which has a size expressed in bytes which is greater than a minimum size fixed by the operator of the access network RAI, or by the user himself of the terminal T1.
• the multimedia file in an MT2 message can be an attachment to the body of the message or included in the body of the message.
• the CTM sorting center also includes a means of establishing orders for CN notification possibly including a textual block of BT data.
• the web server SW has an equivalent role to the sorting center CTM, or more generally to the sorting centers associated with the various access networks of the second terminals, since the web server SW is accessible to any type of second terminal, fixed or mobile, through the RP internet.
• the server SW is also useful for the user of the first terminal T1 to access a storage space allocated to the user in the SSM server having stored multimedia files intended for him, from any terminal connected to the internet, including the mobile terminal T1, and to consult, delete or add multimedia files in the storage space allocated from any terminal connected to the internet, including the mobile terminal T1.
• the direct deposit of multimedia files in the web server SW thanks to the navigation functionalities in the latter is comparable to any message deposit to be notified to the terminal Tl.
• the multimedia file storage server SSM can be of the type of database management server dedicated to the storage of multimedia files and connected to the sorting center CTM and to the server SW by dedicated links.
• the SSM server is implemented in the CTM sorting center or the web server SW.
• the storage space allocated to the user of the terminal Tl is configured in particular in size and in directory through the server SW. This storage space is identified by means of a URL (Universal Resource Locator) relayed by the SW server or the CTM sorting center.
• URL Universal Resource Locator
• the allocated storage space accessible from the Tl terminal in particular through the RAI access network, or else through the BO terminal and the RAF access network, can be shared in a private zone ZPR and a public zone ZPU.
• the private zone ZPR stores multimedia files of the user of the terminal Tl which are inaccessible to other users.
• the public area ZPU stores multimedia files, in particular transmitted from the terminal T2, accessible to any other user, preferably subject to the validation of a predetermined password MP transmitted by the second terminal T2 and communicated beforehand by the user from terminal Tl to other users.
• the storage space may include a directory of the dedicated album type in which multimedia files are stored, such as photos in JPEG format or according to other standards, video clips or musical pieces according to the MP3 standard or according to other standards, transmitted by second terminals after validation of the password. Access to this album and in general to the ZPU public area can be protected in read and / or write by one or more passwords. An authorized user accesses the ZPU storage area thanks to the navigation features in the SW web server.
• the notification server SN is connected to the sorting center CTM and to the web server SW via specialized links, through the Internet RP or even through an intranet.
• the notification server SN is installed in a short message server connected to several mobile service switches of the RAI radiotelephony network serving the first terminal T1 through a network of gateways for example such as a digital network with ISDN service integration, a network of transmission of packets of X.25 type or a link of type SS7 (Signaling System 7).
• the multimedia file storage notifications NSFM established by the server SN are thus encapsulated in short messages SM (Short Message) transmitted by the short message server SC to the terminal T1 through the network RAI.
• Each notification includes an identifier ID2 of the user sending a multimedia file, such as the name of the sending user or at least the address of a terminal of this sending user, as well as the name and type of the file.
• An FM multimedia file according to the invention can be static and / or dynamic.
• a static multimedia file includes text and / or graphics and / or a table and / or an image.
• a dynamic multimedia file comprises sound in the form, for example, of a musical piece or of a speech sequence standardized according to the MP3 standard or any other standard, a video sequence and thus may include fixed and / or animated content.
• the multimedia file can correspond to a multimedia document according to the MPEG-7 standard or any other standard from which can be extracted from the textual characteristics of the document relating to the title, the date of publication, the author and the producer of the document which are then recoverable by the sorting center CTM or the server SW to introduce them as a description of multimedia document in a CN notification command and then in an NSFM notification.
• a first method relates to the transmission of an FM multimedia file from a second terminal T2 in the storage server SSM and the notification of the storage of the FM multimedia file to the first terminal T1. It comprises steps 10 to 17 shown in FIG. 2.
• the user of the terminal T1 has reserved a storage area ZPU in the SSM server and has imposed directly or through the network operator RAI a minimum size TM of multimedia files to be stored.
• the minimum size TM is a priori greater than the size of memory available in the mobile terminal T1 to record a short text message of large size.
• the FM multimedia file to be transmitted is routed by the sorting center CTM.
• the user of the terminal T2 transmits a message MT2 containing the multimedia file FM from the terminal T2 in step 10.
• the message MT2 is in the form of an MMS message when the terminal T2 ' is radiotelephone, or in the form of 'an e-mail message when the terminal T2 is for example a personal computer. More specifically, the message transmitted MT2 contains, in addition to the FM multimedia file, including the name and type of the FM file, the address ATI, that is to say the telephone number, of the destination terminal T1, an identifier ID2 from the T2 sending terminal such as the name of the T2 terminal user or the address and / or telephone number T2 terminal, and a text block BT describing characteristics of the FM multimedia file and / or the reason for transmission of the FM file for example.
• the message MT2 is conventionally routed through the access network RA2 to the sorting center CTM in step 1.
• the sorting center CTM analyzes the message received MT2 only if a multimedia file is detected there in step 11.
• the sorting center extracts from the message MT2 on the one hand the data relating to the terminal address ATI, the user identifier ID2 and the text block BT, on the other hand the multimedia file FM.
• the sorting center CTM evaluates the size of the multimedia file FM detected in the message MT2 and compares it to the minimum size TM. If the multimedia file has a size smaller than the minimum size TM, the sorting center CTM establishes a notification command CN including all the data of the message MT2, including the small multimedia file, to the notification server SN, as indicated in step 13.
• the sorting center CTM directs the extracted FM multimedia file to the public area ZPU in the storage server SSM so that it stores the multimedia file in correspondence with the address ATI extracted from the destination terminal T1, as indicated in steps 14 and 15 in FIG. 2.
• the sorting center CTM establishes a notification command CN, in parallel with the routing of the extracted FM multimedia file to the SSM server.
• the CN notification command includes all the ATI, ID2 and BT data contained in the message received MT2 with the exception of the FM multimedia file.
• the notification command CN thus established is transmitted by the sorting center CTM to the notification server SN, in step 16.
• the notification server SN which is a short message server extracts the address ATI from the terminal T1 of the command notification received CN in order to transmit it, as the recipient address identifying the terminal T1, to the nominal register of the HLR (Home Location Register) type of the RAI radiotelephony network.
• the nominal recorder reads the temporary identity of the TMSI (Temporary Mobile Station Identity) type assigned to the mobile terminal T1 as well as the address of the mobile service switch to which the terminal T1 is temporarily attached.
• TMSI Temporary Mobile Station Identity
• the server SN encapsulates the TMSI identity transmitted by the nominal register HLR as well as the data ID2 and BT, and possibly a small FM file, included in the notification command received CN in a short message playing the role of notification of storage of multimedia file NSFM, in step 17.
• the reception of the short message NSFM thus notifies the user of the terminal T1 that the attachment to the message MT2 constituted by the multimedia file FM has given him was sent by another user and, if steps 14 to 16 have been carried out, has been stored in its public storage area ZPU in the SSM server.
• the user will consult and later recover the FM multimedia file, as will be seen with reference to FIG. 3.
• the first method for accessing a multimedia file as detailed above according to FIG.
• step 10 the user of the terminal T2 who wishes to deposit an FM multimedia file in the server SSM calls the server SW by dialing the address ASW and then the password MP following an invitation message from the server SW.
• the terminal T2 transmits the message MT2 (AT1, ID2, BT, FM) to the server SW.
• the server SW analyzes the message MT2 and directs the extracted multimedia file FM to store it in the public area ZPU of the server SSM when the size of the multimedia file FM exceeds the minimum size TM. If the multimedia file is smaller than the minimum size TM, the SSM server establishes a notification command CN including all the data of the message MT2, including the small multimedia file, to the notification server SN, as indicated in step 13. The server SW then informs the notification server SN by a notification command CN that the user of the terminal T2 has transmitted a multimedia file FM as attachments, in a manner analogous to step 16.
• the notification server SN then sends, in step 17, a notification of storage of a multimedia file NSFM in the form of a short message to the terminal T1 to indicate to the user that the multimedia file FM has been deposited by the user of terminal T2 in its storage area ZPU in the SSM server.
• the dialogue between the terminal T2 and the server SW is more user-friendly according to a client-server design, the terminal T2 being a mobile or fixed terminal of the client type and the web server SW playing the role of server.
• the interface offered to the user of the T2 terminal is "light" according to this embodiment, for example of the Windows type (registered trademark).
• the user of the terminal T2 deposits an FM multimedia file in the public storage area ZPU by: selecting a menu "multimedia file deposit", - entering the ATI address, that is to say the telephone number of the terminal T1, or selecting it from a directory of the terminal T2, and - entering its identity and the password MP if it is requested by a small application of the applet type implemented in the terminal T2.
• the application then automatically converts the ATI address to the internet address (IP) or ASW URL of the web server SW and then transfers the extracted multimedia file FM from the ZPU zone to the ZPR zone.
• the multimedia file storage server SSM is replaced by a memory space included in a fixed terminal, such as the terminal BO, linked to the user having the mobile terminal Tl.
• the sorting center CTM or the web server SW then transmits the extracted FM multimedia file to the fixed terminal for storage there in step 15.
• the user will consult or recover the FM multimedia file stored locally.
• Retrieving an FM multimedia file in the ZPU or ZPR storage area allocated to the user of the terminal T1 in the SSM server comprises steps 20 to 26 shown in FIG. 3.
• the user selects a specific menu in the terminal Tl or presses a predetermined key on his terminal Tl, which can in one embodiment be limited to powering up the terminal Tl, in step 20.
• the terminal Tl check in the next step 21 if it is in the coverage area of the BO terminal.
• the terminal T1 decides to establish a connection with the web server SW through the radiotelephony network RAI in step 22, after validation by the user. Otherwise, in step 23, the terminal BO which has detected the terminal Tl in its cover establishes a link with the web server SW directly through the access network RAF, such as an ADSL line.
• the access network RAF such as an ADSL line.
• a dialogue is established between the server SSM and the terminal Tl through the network RAI , or the terminal BO and the network RAF, and the server SW so that the user controls the downloading in the terminal Tl of one or more multimedia files FM in step 25.
• the terminal Tl acknowledges file registration multimedia in the terminal Tl to the server SW, in step 26.
• the storage of a multimedia file FM in the storage zone ZPR or ZPU allocated to the user of the terminal T1 in the storage server SSM comprises steps 30 to 39.
• a request for file storage multimedia in the SSM server is triggered by the pressing of a predetermined key on the terminal Tl or the validation of a menu on the screen of the terminal Tl, in step 30.
• the terminal Tl decides to establish a connection with the server SW via the terminal BO and the access network RAF, or via the radiotelephony network RAI, after validation of the user of the terminal Tl.
• the terminal Tl is not detected by the terminal BO, a choice is proposed on the screen of the terminal Tl, between an immediate multimedia file download to the radiotelephony network RAI and a deferred download, in step 32. If the user has decided to connect the terminal Tl immediately to the RAI network, the terminal Tl is connected to the server SW through the network RAI in step 33. If the user refuses the immediate connection, the terminal Tl stores in memory the download request and the characteristics of the multimedia file to be downloaded specified in step 30 during an intermediate step 34 until the terminal BO detects in its coverage area the terminal T1 in step 35. As soon as the terminal T1 and the terminal BO are detected in step 31 or 35, the terminal BO connects the terminal T1 through the access network RAF to the web server SW in step 36.
• a request to download an FM multimedia file for the storage area ZPU, or ZPR, through the web server SW is only authorized if the server SW recognized the address ATI of the terminal Tl supplied by the RAI or RP network.
• the terminal Tl transmits the multimedia file FM through the network RAI, or the terminal BO and the network RAF, to the web server SW which directs it to the server SSM and more precisely to the storage area ZPU or ZPR assigned to the user of the terminal T1 and selected in step 30.
• the server SW acknowledges the downloading of the multimedia file FM to the terminal T1 in step 39.
• the notification server SN is not limited to a short message server and can, according to another embodiment, be replaced by a gateway node GGSM (Gateway GPRS Support Mode) and a service node SGSM (Serving GPRS Support Mode) between them by a GPRS (General Packet Radio Service) packet network which is connected to the nominal recorder as well as to several base station controllers of the RAI radiotelephony network.
• the gateway node GGSM is connected to the message sorting center CTM by a dedicated link and to the web server SW through the internet RP.
• the mobile terminal T1 can be a personal mobile telecommunications tool or device such as a personal digital assistant PDA (Personal Digital Assistant) or a portable microcomputer, fitted with a cellular radiotelephone transmission-reception module.
• PDA Personal Digital Assistant

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• Computer Security & Cryptography (AREA)
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• Telephonic Communication Services (AREA)

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