[go: up one dir, main page]

WO2001093553A1 - Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees - Google Patents

Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees Download PDF

Info

Publication number
WO2001093553A1
WO2001093553A1 PCT/IT2000/000219 IT0000219W WO0193553A1 WO 2001093553 A1 WO2001093553 A1 WO 2001093553A1 IT 0000219 W IT0000219 W IT 0000219W WO 0193553 A1 WO0193553 A1 WO 0193553A1
Authority
WO
WIPO (PCT)
Prior art keywords
server
voice
network
communications
client
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IT2000/000219
Other languages
English (en)
Italian (it)
Inventor
Gianluca Dettori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU51020/00A priority Critical patent/AU5102000A/en
Priority to PCT/IT2000/000219 priority patent/WO2001093553A1/fr
Publication of WO2001093553A1 publication Critical patent/WO2001093553A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0024—Services and arrangements where telephone services are combined with data services
    • H04M7/0027—Collaboration services where a computer is used for data transfer and the telephone is used for telephonic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0024—Services and arrangements where telephone services are combined with data services
    • H04M7/0057—Services where the data services network provides a telephone service in addition or as an alternative, e.g. for backup purposes, to the telephone service provided by the telephone services network

Definitions

  • the present invention relates to a telephone communications system and to an associated communications method.
  • a telephone communications system and to an associated communications method relate to a telephone communications system and a method using transmission on the Internet or equivalent network.
  • the object of the present invention is therefore that of providing a communications system and a method which overcome entirely these ' drawbacks.
  • the Applicants have had the astute insight that it was necessary, in addition to continuing to improve the methods for compression of the signal, so as to increase the intrinsic transmission quality, to make the system no longer dependent upon the use of a personal computer at least by the receiving user.
  • the invention provides a system which allows voice conversations to be performed in real time between users who use, as their terminals, either a multimedia personal computer (PC) or a conventional telephone set, with excellent quality and extremely low costs.
  • PC personal computer
  • the system also allows conversations, including multiple conversations, to be performed between users equipped with telephone terminals, users equipped with telephone terminals and multimedia PC, and users equipped with multimedia personal computers.
  • the invention provides a telephone communications method which also comprises an "advertising supplying" step which is performed by means of a display and control device which displays advertisements supplied by the local server, via an HTTP session, on the monitor of said terminal, detects attempts to disable the advertisement by the user and interrupts the- voice communications session when said disabling of the advertisement is detected.
  • an "advertising supplying" step which is performed by means of a display and control device which displays advertisements supplied by the local server, via an HTTP session, on the monitor of said terminal, detects attempts to disable the advertisement by the user and interrupts the- voice communications session when said disabling of the advertisement is detected.
  • the system architecture envisages a network of servers Si which are geographically distributed and connected to the Internet and with whom a user may link up by means of any Internet connection, for example using an IP session opened by means of an established provider, or by means of a conventional telephone line.
  • the user sites - at least two in number - consist of clients U M , N which are connected together by means of one or more servers Si, depending on whether the sites are served by the same local server Si or by two different servers Si
  • Each server processes the information flux from the client and routes it onto communication lines of a telephone company or onto lines connected to other servers .
  • the servers are able to maintain and manage a "portal" module of the service (operation of which will be described below) , activate/deactivate calls, manage the intra-server and inter-server connections, including IP traffic, and also maintain and consult a data bank or table, whose function will be discussed further below.
  • each server consists of a cluster of personal computers which are connected together by means of suitable communication lines and interfaced with the conventional telephone network in the manner described further below - and with the Internet by means of a commercial router of the known type.
  • the PC cluster is organized so as to function according to a scheduling which distributes calls among the various PCs based on a "fault tolerance" policy which ensures continuity of the service in the event of malfunctioning of the individual components .
  • the module for interface with the conventional telephone network which is incorporated for example in one of the PCs in the PC cluster of the server, comprises: a physical/electrical interface with the telephone network; a device for converting the data flux from the format used in the conventional telephone network into the format used in the digital connection network, based on the IP protocol, and vice versa; an optional device for processing, at server level, the numerical voice signal; a system for aggregating and structuring the flux of digital data for transmission .
  • the system envisages that a subscriber, after being authorized to use the service (by means of an automatic registration procedure which can be carried out on an Internet portal) , requests activation of a call (interacting with the service portal) , using a computer program or a specific procedure which are supplied during initial registration with the service, and supplies the identity (for example, the number within the numbering system assigned by the local telephone company) of the receiving client with whom voice communication is to be established.
  • a subscriber after being authorized to use the service (by means of an automatic registration procedure which can be carried out on an Internet portal) , requests activation of a call (interacting with the service portal) , using a computer program or a specific procedure which are supplied during initial registration with the service, and supplies the identity (for example, the number within the numbering system assigned by the local telephone company) of the receiving client with whom voice communication is to be established.
  • the local input server receives the request and activates a search procedure in a database of the registered subscribers so as to identify the calling party, if authorised, and optionally the receiving party.
  • a PC in the cluster is assigned to manage the input sound channel.
  • the output server to whom the client to be called is connected is identified; depending on the location of the output server, the input server forwards the request by means of an inter-server connection or, if the receiving client is linked up to the same input server, by activating one of the PCs in its cluster, which is assigned management of the output sound channel.
  • the voice information in numerical format is compressed into packets and sent to its destination.
  • the output server on that side processes the voice signal (outgoing and/or incoming) so as to convert ir into the format suitable for transmission on the local telephone network and transmit the signal thus converted to the telephone set of the receiving party.
  • the client of the subscriber may have different constructional forms.
  • the entire signal processing capability is resident within the server linked thereto.
  • the calling subscriber in this case, dials a local number and, via a voice menu or by making an automatic selection using a special numbering system, transmits the request to the system.
  • the output server making a conventional telephone call, autonomously, to the telephone of the receiving party.
  • the client is a multimedia PC (at least equipped with an interface for a microphone, a sound board, speakers/headphones and a device for connection to an Internet line)
  • a suitable control software is envisaged, said software among other things establishing a connection with the system according to the invention (both in transmission and in reception) and performing processing of the voice signal using an A/D and D/A converter, a compression module and a transmission device, for example a modem.
  • the control software has an additional function which may be implemented in various ways by a person skilled in the art and which shall be referred to as an "advertising supplying" function.
  • This software module is able to generate an advertising window on the screen of the PC during activation of the call: this advertising window, which is supplied by the server connected to the client, is hierarchically predominant over any other function of the display device, namely cannot be eliminated (i.e. withstands activation of the screen saver function, interrupts the transmission in the event of the screen being switched off, etc.), cannot be reduced to an icon, and cannot be masked by other windows.
  • the program installed on the client therefore performs various functions by means of which the subscriber is able to implement a process which activates the communications procedure and which may be schematically described below.
  • connection to the local input server and authentication e) connection to the local input server and authentication; f) formulation of the identification code (unique specially assigned code or telephone number) of the client to be called; g) where required, if this option has been chosen, automatic activation of the "advertising supplying" function delivered by the server; h) acquisition, A/D conversion, compression and transmission of the voice signal; i) termination of the connection and deactivation of the "advertising supplying" function.
  • identification code unique specially assigned code or telephone number
  • An automatic reception system may be provided on the client so as to allow calls to be received even in the absence of the user.
  • a telephone answering service is activated either directly on the receiving PC (where the receiving client, during operation, has been enabled for this function) or on the local output server which detects the temporary inactivity of the receiving client and stores the message for subsequent deliyery.
  • the receiving client is also provided with a terminal with a processing capability, such as a PC. If the receiving user is also registered with the service, upon calling he applies his identity to the output server which, if required, activates an "advertising supplying" function also on the receiving client: this method of operation, which results in increased advertising revenue for the service provider, allows a further reduction in the costs for subscribers who, for example, are able to communicate with each other completely free of charge.
  • An automatic calling system may be provided in the client so as to allow programming of the calls such that they may be sent at a later time even in the absence of the subscriber.
  • the window with the communications interface is activated on the calling client, entry of the number of the receiving party (personal identification or telephone number) is requested and the time of the call is set and then a voice message, to be sent later at the required time, is recorded.
  • the same function may be provided on the local input server: in this case, the subscriber must establish an HTTP connection and a voice connection with the corresponding server and record the voice message using a procedure similar to that described above.
  • the graphics interface which the control program presents to the user may also contain, in addition to the information described above, the following data fields: pushbutton for connection to the Internet portal; an alphanumeric display for displaying the identification number being called or making the call, the duration of the conversation and help messages; a numerical keypad; a pushbutton for- activating the call; a pushbutton for activating management of the delayed call service; a pushbutton for terminating the call; a pushbutton for activating the telephone answering service on the server; a pushbutton for calling up a personal or general list of telephone numbers; bars for setting the reception and transmission volume; a pushbutton for closing the advertising window.
  • the analog voice signal is acquired at the client and converted into a digital format using any known technique. Then the signal of the individual conversation arrives in digital format from the Telecom telephone line to the local server, where it is translated into PCM format.
  • the digital signal thus represented, enters a filter bank which performs the division into time/frequency sub-bands undersampled with respect to the original signal and with different levels of resolution.
  • the coefficients of each sub-band are preferably processed in the following manner:
  • the coefficients of the sub-band with the lowest frequency (last level) are represented in DPCM and coded with a variable bitstream depending on their corresponding frequencies; the coefficients of the remaining sub-bands are selected depending on the energy associated with them, using the following sequence: a) selection is performed by means of double thresholding of the queues of the coefficient probability density function; this thresholding is performed repeatedly in iterative mode from the remaining sub-band of the last level to the higher-frequency sub-bands (as far as the zero level) ; b) from thresholding of the coefficients in the two sub-bands on the last and penultimate level, two maps are obtained, by means of which it is possible to localize the prevailing-energy coefficients for the respective sub- bands; c) superimposing these two maps produces the overall map within which the coefficients considered significant for those sub-bands are localized.
  • the resultant map is extended, by means of suitable re-dimensioning proportional to the dimension of the sub- bands at the various levels of the current level, and used to subquantire the coefficients of the current sub-band.
  • the number of levels is fixed at three, but may be modified in real time so as to allow optimum management of the traffic while guaranteeing the desired quality level.
  • the signal thus processed is transmitted to the PC in the PC cluster to which the corresponding conversation has been assigned by means of a local bus.
  • This PC packetizes the information, numbering the packets in temporal sequence, and sends them to the output server (or to a PC in the same cluster) to which the desired receiving subscriber is linked up, by means of an IP protocol.
  • the voice signal of the individual conversation is acquired by the microphone of the calling client, converted into digital format by the sound board of the same PC and transferred, in PCM format, to the call management and control program which itself performs processing and compression of the numerical signal in accordance with the steps described above.
  • the signal thus processed is then transmitted to the local input server, after being packetized (with numbering of the packets in temporal sequence) , by means of the IP communications protocol.
  • the voice signal of the individual conversation reaches the output server in successive packets from the IP connection with the other server or by means of an intra- server connection from a PC in the same cluster.
  • the PC in the cluster which has been assigned to this function performs conversion of the sequence of packets into a bitstream corresponding to the coefficients, inserting zero coefficients in the case where the corresponding packet does not arrive or arrives with a delay.
  • the bitstream is then converted into the sub-band multi-resolution time/frequency representation, by means of the localization map, and passed into a reverse filter bank, with oversampling, thus reconstructing the original PCM signal (i.e. the steps which, during coding, resulted in the compressed signal are performed in reverse) .
  • the signal is converted into the communications standard used by the local Telecom (if necessary converting it using a D/A converter) and sent to the telephone set of the receiving user whose telephone number has been supplied by the calling subscriber or read from a subscriber consultation table kept by the server.
  • the voice signal of the individual conversation arrives in successive packets from the IP connection with the server to the client of the receiving user.
  • the communications program installed on the PC of the user performs, in a similar manner to the sequence described above for the PC in the server cluster, conversion of the sequence of packets into a bitstream corresponding- to the coefficients; the bitstream is then converted into the sub-band multi-resolution time/frequency representation, by means of the localization map, and passed into the reverse filter bank with oversampling, thus reconstructing the original PCM signal.
  • the signal is converted and transferred by means of a bus within the sound board which sends it in analog format to an output device, such as loudspeakers or headphones. 3.
  • the telephone network interface module is preferably connected to one of the PCs in the server cluster by means of a PCI bus.
  • the packetized data is received/transmitted on the local network by means of a fast net card.
  • This module incorporates: a physical/electrical interface with the telephone network, for aggregate digital flow transmission of telephone channels and the network based on the IP protocol; a device for converting the data flow from the format for the telephone network with aggregate numerical flow of telephone channels to the IP protocol format for the Internet, and vice versa; a system for local processing of the numerical information, which performs the functions of compression, protection and management of the transmission errors, guarantee as to the information quality, confidentiality of the transmission, scalability of the information transmitted; a device for aggregating and structuring the numerical data flow of the processed information or for transmission to another component of the server to which processing has been assigned. All these elements are known per se and reproducible in various ways by a person skilled in the art. An examplary way of obtaining this module is described below.
  • the board is provided with an input/output, to/from the telephone network of the local Telecom, of the type Tl/El at 2,048 Mbps in both directions, a RJ45 connector and an ⁇ -law/A-law interface for adaptation of the signal and echo elimination functions.
  • the information which passes through this interface is not compressed using advanced techniques, but is a sampled and PCM-represented analog signal.
  • the other main interface of the board is the input/output from/to the host PC, which is arranged on a bidirectional communication bus of the type PCI rel. 2.1, through which the flows of information compressed using the abovementioned high-efficiency techniques, the associated data for protection of the information and the signalling and control information in digital form pass.
  • the main DSP processor of the board (operating at frequencies of between 200-500 MHz and a processing power of about 2000 MIPS, with an internal memory of between 128 and 384 Kb, fast serial ports and interface with the external memory accessible via connectors) performs coding/decoding of the information flow, while the other adaptation measures necessary for organising/subdividing communications from/into a single frame are performed by dedicated hardware components, integrated as separate components on the board.
  • the physical/electrical characteristics of the board also include a PCI interface with a bus mastering capacity, an ITAG-type diagnostics support integrated in the board, a 1-to- ⁇ frequency multiplier of the basic clock, synchronous external memory in two, 32-bit, 64 Kb SBSRAM banks operating at 133 MHz and two, 32-bit, 1 MB SDRAM banks, an expansion interface for a piggy board module, a programmable logic for control and initial programming (at start-up) of the board, a power supplier and DIP switches for hardware programming of the I/O board.
  • the servers are distributed over the Territory in a more or less capillary manner, in accordance with expansion and cost-efficiency criteria defined by the service provider, but also depending on the areas which will be able to use, or use more extensively, the services supplied by means of local calls.
  • the servers may also be connected by means of a dedicated line, if considered to be convenient, or by means of the Internet or equivalent network. Communication with the telephone network is ensured by one or more dedicated access lines (each at least 2 Mbs) .
  • the internal architecture of the server is distributed so as to ensure also the scalability of the system.
  • the essential modules of the system comprise a local network (LAN, operating at 100 Mbps or more) ; a router, able to separate the backbone on the Internet side from the local network, separating the Internet traffic which is of no relevance from that which is of interest; a first series of PCs assigned to manage the telephone calls and equipped with an interface with the local network (LAN) and one or two DSP boards which interface the server with the telephone lines and are able to process the latter with clipping of at least 2 Mbps which can be adapted to new or different standards used in the territory; a switch (100 Mbps or more) assigned for the connection between the router and the various PCs; two supervisors (one on hot standby for the other one) jfor supervising the system; a second series of PCs which have an interface only with the local network and are assigned to perform data processing; a DBMS server for managing the information (database)
  • the HTTP server which performs the functions of service registration, advertising, management of user profiles, etc.); a device for defence against external attacks, or a so-called firewall, used to increase system access security and arranged between the router and the switch (in order to increase the system security, the HTTP server may be connected directly to the router) .
  • this system allows a high degree of flexibility with regard to assignment of the activities to the DSP boards and to the two series of PCs.
  • assign to different entities the activities of separation of the individual conversation channels from the frame (for example, 30 channels are extracted from transmissions at 2 Mbps) , data processing, data coding/decoding.
  • the choice of the optimum configuration is typically performed on the basis of the capacity of the input channel of the individual DSP boards.
  • three configurations are possible: a) channel separation, processing and co-decoding on the DSP board (in this case no PC from the second series of PCs is used) ; b) channel separation and data processing on the DSP board, co-decoding on the corresponding PC of the first series of PCs (in this case no PC from the second series of PCs is used) ; c) channel separation on the DSP board of the corresponding PC of the first series of PCs, processing and co-decoding on one or more PCs of the second series of PCs.
  • the system is based on a network of servers distributed- within the territory; the back-up function for the HTTP and DBMS servers is obtained owing to the presence of at least two servers of this type within the geographical network; however, it is understood that, at any time, there will be only one HTTP server and one primary DBMS server, while the other servers will be secondary and ready to become primary if needed.
  • the predefined objects have been achieved.
  • the service provider is able to reduce considerably the transmission costs and interact, by means of a suitable software, with a calling user and, optionally, also with the receiving user (if equipped with a multimedia PC) , supplying advertisements and therefore offering a completely new and original communications service with practically zero call costs for the subscribers (including the cost of local calls, from the calling user to the local input server, which may be borne by the service provider, for example by activating a toll- free number) .
  • the service offered by the provider offers the possibility of extremely flexible growth and is simple to implement, it being sufficient to broaden the capacity of a basic nucleus consisting of only two servers by adding an increasing number of servers as and when required: it will be sufficient to modify the divisions of the geographical areas, dividing them into sub-areas to which new local servers will be reassigned.
  • the voice transmission may occur on a digital network or on the Internet or equivalent network with an extremely high level of quality comparable to that which can be obtained on a normal telephone network.

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Development Economics (AREA)
  • Signal Processing (AREA)
  • Finance (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Strategic Management (AREA)
  • Economics (AREA)
  • Physics & Mathematics (AREA)
  • Marketing (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Game Theory and Decision Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un système et un procédé reposant sur l'utilisation du réseau numérique Internet ou d'un réseau équivalent, qui permet de traiter simultanément les échanges de parole entre au moins deux clients reliés respectivement à des serveurs d'entrée et de sortie pour chaque zone géographique concernée, mais également connectés mutuellement via le réseau Internet. Au moins l'un de ces clients est un terminal d'ordinateur capable d'établir une session HTTP et une session vocale avec le serveur correspondant. Entre lesdits clients appelant et appelé, on dispose d'appareils pour l'acquisition, la conversion numérique, la compression, la mise en paquets et la transmission d'un signal vocal dans les deux sens. Enfin, au moins un serveur comporte un appareil pour la conversion du signal vocal depuis le numérique vers un format susceptible d'être transmis sur le réseau téléphonique local et vice versa.
PCT/IT2000/000219 2000-05-29 2000-05-29 Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees Ceased WO2001093553A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU51020/00A AU5102000A (en) 2000-05-29 2000-05-29 System and method for audio transmission over data networks
PCT/IT2000/000219 WO2001093553A1 (fr) 2000-05-29 2000-05-29 Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2000/000219 WO2001093553A1 (fr) 2000-05-29 2000-05-29 Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees

Publications (1)

Publication Number Publication Date
WO2001093553A1 true WO2001093553A1 (fr) 2001-12-06

Family

ID=11133525

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2000/000219 Ceased WO2001093553A1 (fr) 2000-05-29 2000-05-29 Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees

Country Status (2)

Country Link
AU (1) AU5102000A (fr)
WO (1) WO2001093553A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036543A1 (fr) * 1997-02-14 1998-08-20 Telia Ab (Publ) Systeme de localisation de passerelle acceptant les passerelles entre service telephonique de base et l'internet
US5838665A (en) * 1996-03-11 1998-11-17 Integrated Technology, Inc. Data network telephone adaptor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838665A (en) * 1996-03-11 1998-11-17 Integrated Technology, Inc. Data network telephone adaptor device
WO1998036543A1 (fr) * 1997-02-14 1998-08-20 Telia Ab (Publ) Systeme de localisation de passerelle acceptant les passerelles entre service telephonique de base et l'internet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HOUGHTON T F ET AL: "A PACKET TELEPHONY GATEWAY FOR PUBLIC NETWORK OPERATORS", ISS. WORLD TELECOMMUNICATIONS CONGRESS. (INTERNATIONAL SWITCHING SYMPOSIUM),CA,TORONTO, PINNACLE GROUP, 21 September 1997 (1997-09-21), pages 35 - 44, XP000704453 *

Also Published As

Publication number Publication date
AU5102000A (en) 2001-12-11

Similar Documents

Publication Publication Date Title
CN1167243C (zh) 话音因特网传输系统
US6768722B1 (en) Systems and methods for managing multiple communications
CA2325792C (fr) Controle simplifie de service ip
US7466978B1 (en) Telephone network node device
US6400816B1 (en) Network-independent communications system
US20040076144A1 (en) Method for providing voice communication services and system for the same
EP0948860A1 (fr) Systeme d'acces general
KR20000069024A (ko) 통신 시스템 아키텍쳐
JP2002503921A (ja) データテレフォニーネットワークと専用接続テレフォニーネットワークの間の電話ネットワーク用インタフェースブリッジ
CN103067188A (zh) 一种网络电话会议系统及其实现方法
MXPA00012897A (es) Metodo para realizar el seguimiento entre multiples redes de ip.
US6704567B1 (en) Wireless communications device and method
EP1365552A1 (fr) Systeme de commutation a reseau integre
US9025588B2 (en) Internet based telephone line
US7016667B1 (en) Wireless communications device and method for use with telephone network edge node providing bridging and privacy
EP1111894A1 (fr) Système et procédé de communication pour l'établissment d'une conversation en utilisant de technologies de couches liaison différentes
CN103379662A (zh) 网络接入的方法、接口设备和移动上网设备
CN105744100A (zh) 一种智能通信方法、装置及通信设备
EP1927242B1 (fr) Systeme et procede pour interoperabilite radio
US6690933B1 (en) Sharing of wirelines using a network node device
US20030022658A1 (en) Configuring and maintaining network node device
US6983042B1 (en) Business method for hybrid wireline wireless network service
EP1354463A2 (fr) Systeme telephonique utilisant un ou plusieurs micro-ordinateurs
WO2000014943A1 (fr) Reseau telephonique pour objet structure et systeme de communications telephoniques entre des objets structures et situes a distance qui utilisent ce reseau
WO2001093553A1 (fr) Systeme et procede pour la transmission de signaux audio sur des reseaux de donnees

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 69(1) EPC DATED 06-03-03

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP