New! View global litigation for patent families

US20110013622A1 - Voice communication system and voice communication method - Google Patents

Voice communication system and voice communication method Download PDF

Info

Publication number
US20110013622A1
US20110013622A1 US12893292 US89329210A US2011013622A1 US 20110013622 A1 US20110013622 A1 US 20110013622A1 US 12893292 US12893292 US 12893292 US 89329210 A US89329210 A US 89329210A US 2011013622 A1 US2011013622 A1 US 2011013622A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
communication
voice
terminal
telephone
step
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.)
Abandoned
Application number
US12893292
Inventor
Naoko Iwami
Susumu Matsui
Keiko Takahara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/12047Directories; name-to-address mapping
    • H04L29/1216Directories for hybrid networks, e.g. including also telephone numbers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/02Communication control; Communication processing contains provisionally no documents
    • H04L29/06Communication control; Communication processing contains provisionally no documents characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/12018Mapping of addresses of different types; address resolution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/12047Directories; name-to-address mapping
    • H04L29/12103Directories; name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. Rendezvous server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/10Mapping of addresses of different types; Address resolution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/15Directories; Name-to-address mapping
    • H04L61/1535Directories; Name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. "rendezvous" server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/15Directories; Name-to-address mapping
    • H04L61/157Directories for hybrid networks, e.g. including telephone numbers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1069Setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport
    • H04L2012/6445Admission control
    • H04L2012/6448Medium Access Control [MAC]
    • H04L2012/6454Random, e.g. Ethernet
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport
    • H04L2012/6475N-ISDN, Public Switched Telephone Network [PSTN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport
    • H04L2012/6486Signalling Protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/12018Mapping of addresses of different types; address resolution
    • H04L29/12037Mapping of addresses of different types; address resolution across networks, e.g. mapping telephone numbers to data network addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/10Mapping of addresses of different types; Address resolution
    • H04L61/106Mapping of addresses of different types; Address resolution across networks, e.g. mapping telephone numbers to data network addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42314Systems providing special services or facilities to subscribers in private branch exchanges
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034A/D conversion, code compression/expansion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097Numbering, addressing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389LAN, internet

Abstract

A voice communication system, which is connected to a LAN to which communication terminals are connected and to a public network to which telephones are connected, is provided with a communication server between the LAN and public network having different protocols from each other. The communication server enables a voice communication between a telephone on the public network and a communication terminal connected to the LAN by performing processing similar to that for a voice communication between two communication terminals connected to the LAN. The communication server determines whether an address of the other party inputted by a user is a communication terminal address or a telephone number, and transmits a voice communication request to a communication terminal of the other party when the address is a communication terminal address. When the address is a telephone number, the user acquires the communication terminal address of the communication server, and transmits a voice communication request to the communication server. Thereafter, the voice communication processing is performed through the communication server.

Description

    CROSS-REFERENCES
  • [0001]
    This is a divisional application of U.S. Ser. No. 11/907,851, filed Oct. 18, 2007, which is a continuation application of U.S. Ser. No. 11/717,062, filed Mar. 13, 2007, now U.S. Pat. No. 7,756,117, which is a continuation application of U.S. Ser. No. 11/319,737, filed Dec. 29, 2005, now U.S. Pat. No. 7,502,363, which is a continuation application of U.S. Ser. No. 09/836,299, filed Apr. 18, 2001, now U.S. Pat. No. 7,167,467, Which is a continuation application of U.S. Ser. No. 08/743,849, filed Nov. 5, 1996, now U.S. Pat. No. 6,240,085, which is a continuation application of U.S. Ser. No. 08/357,189, filed Dec. 13, 1994, now U.S. Pat. No. 5,604,737.
  • BACKGROUND OF THE INVENTION
  • [0002]
    The present invention relates to a voice communication system and method in communication terminals connected through a communication network.
  • [0003]
    As a conventional voice communication system, there is known a system which uses a line switching procedure through a line switching network such as a telephone network. For example, the standard thereof is indicated in CCITT (International Telegraph and Telephone Consullative Committee) Recommendation, ISDN, Q. 937. In this system, a communication terminal (telephone) connected to the line switching network transmits a voice communication request to a switching center dedicated to line switching processing, and the switching center receiving the request performs voice communication control for communication with a communication terminal (telephone) of the other party. Voice information sent at a constant speed is continuously transmitted and received through the switching center even during the voice communication.
  • [0004]
    In a packet switching network such as LAN (Local Area Network), in turn, the communication control is directly performed between communication terminals for transmitting and receiving packets. For example, Etherphone using Ethernet is well known.
  • [0005]
    However, due to the difference in schemes between the packet switching network and the line switching network, conventional voice communication systems such as that using the telephone network and so on cannot be utilized for realizing voice communication between communication terminals connected to the packet switching network.
  • [0006]
    To cope with this problem, a system for editing voice information into packets for transmission and reception between communication terminals has been proposed for adapting the voice communication scheme for communications between communication terminals connected to the packet switching network to the line switching network. However, even if the line switching network is connected with the packet switching network, a direct voice communication is not permitted between a communication terminal supporting voice communications between communication terminals connected to the packet switching network and a telephone connected to the line switching network and supporting the conventional voice communication function. This is due to the difference between the voice communication protocol of the packet switching network and the conventional voice communication protocol.
  • SUMMARY OF THE INVENTION
  • [0007]
    It is an object of the present invention to provide a voice communication system and a voice communication method which enable voice communication to be performed between a communication terminal connected to the packet switching network and a communication terminal connected to the line switching network.
  • [0008]
    It is another object of the present invention to provide a voice communication system and a voice communication method which enable voice communication, even initiated by a communication terminal connected to the packet switching network to a telephone connected to the line switching network and supporting the conventional voice communication functions, to proceed in the same manner as a voice communication between communication terminals connected to the packet switching network.
  • [0009]
    It is a further object of the present invention to provide a voice communication system and a voice communication method which can transmit a message in the form of an electronic mail instead of the voice communication in case a voice communication to a communication terminal connected to the packet switching network is prevented for some reason, without requiring a user to start another program or input a communication address.
  • [0010]
    It is a further object of the present invention to provide a voice communication system and a voice communication method which allows a telephone connected to the line switching network and supporting conventional voice communication functions to request a voice communication to a communication terminal connected to the packet switching network.
  • [0011]
    To achieve the above objects, according to one feature of the present invention, when a voice communication request is issued from a communication terminal connected to a packet switching network, if the address of the other party to which a user desires to have a voice communication, inputted by the user, is a communication terminal address (telephone number) of a telephone connected to a line switching network, communication control is performed between the communication terminal and a communication server to establish a connection between the communication terminal and the communication server. The communication server performs the communication control for a telephone connected to the line switching network to set a communication available state between the communication server and the telephone. This control enables a communication between the communication terminal and the telephone through the communication server. Thereafter, the communication server receives voice information transmitted from the telephone, edits the voice information into packets, and transmits the packets to the communication terminal. The communication server also receives packets transmitted from the communication terminal, and transmits voice information in the packets to the telephone. In this way, communication is carried out.
  • [0012]
    When a voice communication request is issued from a communication terminal connected to the packet switching network, if the address of the other party to which a user desires to have a voice communication, inputted by the user, is the address of another communication terminal connected to the packet switching network, the communication control is performed for a communication terminal having the communication terminal address, conventionally, to carry out the communication.
  • [0013]
    When a communication request is issued from a telephone connected to the line switching network to a communication terminal connected to the packet switching network, each of communication terminals connected to the packet switching network has previously been assigned a unique extension number, such that when the telephone number of the communication server is inputted from a telephone, the communication control is performed between the telephone and the communication server to create a communication available state between the telephone and the communication server, and an inputted extension number is transmitted from the telephone to the communication server. The communication server finds a communication terminal address from the extension number transmitted from the telephone, determines a communication terminal to be connected, and transmits a voice communication request to the communication terminal to establish a connection with the telephone. This enables communication between the telephone and the communication terminal through the communication server. Thereafter, the communication server receives voice information transmitted from the telephone, edits the voice information into packets, and transmits the packets to the communication terminal. The communication server also receives packets transmitted from the communication terminal, and transmits voice information in the packet to the telephone, thus carrying out the communication.
  • [0014]
    The communication server may comprise a table for finding a communication terminal address from an extension number. If a push-type telephone having ten-key and function buttons is used, the extension number may be inputted through the push buttons. For inputting an extension number, an oral guidance may be outputted from the communication server to the telephone, such that the user responsively inputs an extension number corresponding to a communication terminal with which the user desires to communicate.
  • [0015]
    When the line switching network is ISDN (Integrated Services Digital Network), a telephone may transmit a voice communication request including as a parameter an extension number for specifying a communication terminal to the communication server, such that the communication server finds the communication terminal address of a communication terminal to be connected from the extension number included in the voice communication request.
  • [0016]
    Instead of assigning an extension number, a unique telephone number may be assigned to each of communication terminals connected to the packet switching network. In this case, although these telephone numbers are actually assigned to the communication server, they are regarded as telephone numbers of communication terminals from the user. Then, when a telephone number of a communication terminal is inputted from a telephone, the communication control is performed between the telephone and the communication server, wherein the communication server finds a communication terminal address from the telephone number inputted from the telephone, determines a communication terminal to be connected, and transmits a voice communication request to the communication terminal. This control enables a communication between the telephone and the communication terminal through the communication server. Thereafter, the communication server receives voice information transmitted from the telephone, edits the voice information into packets, and transmits the packets to the communication terminal. The communication server also receives packets transmitted from the communication terminal, and transmits voice information in the packets to the telephone. In this way, communication is carried out.
  • [0017]
    Additionally, the communication server may include a table for finding a communication terminal address from a telephone number. Since a telephone number of each communication terminal is actually the telephone number of the communication server on the line switching network, the communication server is called when one of these telephone numbers is inputted from a telephone on the line switching network.
  • [0018]
    According to one aspect of the present invention, a communication terminal connected to the packet switching network may be one that encodes voice inputted through a voice input means, transmits the encoded voice information, and outputs received encoded voice information after decoding the same. In this case, the communication server decodes encoded voice information in the form of packets received from a communication terminal connected to the packet switching network, outputs the decoded voice information to the line switching network, encodes voice information received from the line switching network at a constant speed, edits the encoded voice information into packets, and transmits the packets to the communication terminal.
  • [0019]
    For issuing a communication request from a communication terminal connected to the packet switching network to another communication terminal, a voice communication request is first issued from the communication terminal. In this event, a voice communication negating response may be transmitted from the communication terminal of the other party. This could be because nobody responds although the communication terminal of the other party is called. In this case, it is convenient if a mail can be transmitted to the communication terminal of the other party without requiring the inputting of the address of the other party. The mail may be unconditionally transmitted, or a guidance may be provided to the user of the communication terminal so as to allow the user to determine whether or not a mail is transmitted. The contents of the mail may be a fixed voice mail created by the system or an arbitrary mail inputted by the user.
  • [0020]
    For issuing a communication request from a telephone connected to the line switching network to a communication terminal connected to the packet switching network, a voice communication request is first issued from the telephone to the communication server. In this event, a guidance of a voice communication negating response may be returned from the communication server. This could be because nobody responded although the communication server called the communication terminal of the other party. In this case, it is convenient that a mail can be transmitted to the communication terminal of the other party without requiring the user to input the address of the other party. The mail may be unconditionally transmitted, or a guidance may be provided to the user of the telephone so as to allow the user to determine whether a mail should be transmitted. The mail may include a fixed contents created by the system or arbitrary contents inputted by the user.
  • [0021]
    Further, a communication terminal on the packet switching network may be used as a switcher terminal for managing the relationships between communication terminals connected to the packet switching network and communication terminal users. In this case, when the telephone number of the communication server is inputted from a telephone connected to the line switching network and supporting conventional voice communication functions, the communication server first creates a communication available state between the switcher terminal and the telephone. The user speaks with a switcher at the switcher terminal to specify a person with whom the user desires to communicate. Since the switcher terminal manages the relationships between respective communication terminals and users of these communication terminals, a corresponding communication terminal can be found from information which specifies the person with whom the user of the telephone desires to communicate. The address of the communication terminal is transmitted from the switcher terminal to the communication server. The communication server performs the communication control between the telephone and a communication terminal having the communication terminal address transmitted from the switcher terminal to establish a connection with the communication terminal. This control enables a communication between the communication terminal and the telephone through the communication server. Thereafter, the communication server receives voice information transmitted from the telephone, edits the voice information into packets, transmits the packets to the communication terminal. The communication server also receives packets transmitted from the communication terminal, and transmits voice information in the packets to the telephone.
  • [0022]
    It should be noted that the transmission and reception of control commands such as a voice communication start command, voice communication end command, and so on and the transmission and reception of voice packets between communication terminals on the packet switching network and between a communication terminal and the communication server, may be carried out through separate communication functions having different characteristics such as reliability, communication delay, and so on.
  • [0023]
    According to the voice communication system and voice communication method of the present invention, the other party to which the user requests a voice communication is determined to be a communication terminal connected to the packet switching network or a telephone connected to the line switching network in accordance with the address of the other party inputted by the user of a communication terminal connected to the packet switching network. If the user issues the request to a telephone connected to the line switching network, the communication server absorbs the difference between a voice communication protocol of the packet switching network and a conventional voice communication protocol of the line switching network. Stated another way, the communication server realizes the compatibility between different kinds of protocols. For this reason, even a voice communication initiated by a communication terminal connected to the packet switching network to a telephone connected to the line switching network and supporting the conventional voice communication function can be carried out in the same manner as a voice communication between communication terminals connected to the packet switching network.
  • [0024]
    Also, since an extension number or a telephone number of a communication terminal connected to the packet switching network is inputted from a telephone connected to the line switching network such that the communication server finds a communication terminal address corresponding to the extension number or the telephone number and connects the telephone to the communication terminal, a voice communication may be requested to a communication terminal connected to the packet switching network from a telephone connected to the line switching network and supporting the conventional voice communication functions.
  • [0025]
    In case a voice communication to a communication terminal was prevented for some reason, a mail may be used instead of the voice communication to send a message without requiring the user to start another program or input a communication address.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0026]
    FIG. 1 is a block diagram showing the whole configuration of a voice communication system according to an embodiment of the present invention;
  • [0027]
    FIG. 2 is a block diagram showing the configuration of a communication terminal in FIG. 1;
  • [0028]
    FIG. 3 is a block diagram showing the allocation of programs in a memory of the communication terminal;
  • [0029]
    FIG. 4 is a flow chart showing the processing of a voice communication program on the communication terminal for starting a voice communication, upon receiving a voice communication request from another communication terminal;
  • [0030]
    FIG. 5 is a flow chart showing the processing of the voice communication program on the communication terminal for starting a voice communication by a request of the user;
  • [0031]
    FIG. 6 is a block diagram showing the configuration of a communication server;
  • [0032]
    FIG. 7 is a block diagram showing the allocation of programs in a memory of the communication server;
  • [0033]
    FIG. 8 is a flow chart showing the processing of a voice communication program on the communication server for starting a voice communication between a communication network on LAN and the telephone, upon receiving a call setting request from a telephone connected to a public network;
  • [0034]
    FIG. 9 is a flow chart showing the processing of the voice communication program on the communication server for starting voice communication between the communication terminal on LAN and a telephone, upon receiving a voice communication request from a communication terminal on LAN;
  • [0035]
    FIG. 10 is a flow chart showing the processing performed during a communication;
  • [0036]
    FIG. 11 is a sequence diagram showing a procedure followed by a communication terminal connected to the LAN for making a call to a telephone through the communication server by a request from a communication terminal on the LAN;
  • [0037]
    FIG. 12 is a sequence diagram showing a procedure followed by a communication terminal connected to LAN for making a call to a telephone connected to the public network through the communication server by a request from the telephone;
  • [0038]
    FIG. 13 shows the structure of a voice communication request command;
  • [0039]
    FIG. 14 shows the structure of a voice communication response command;
  • [0040]
    FIG. 15 shows the structure of a voice communication command;
  • [0041]
    FIG. 16 shows the structure of a voice communication end notice command;
  • [0042]
    FIG. 17 is a flow chart showing the processing for determining a communication terminal with which a telephone user desires to communicate when using push buttons;
  • [0043]
    FIG. 18 shows the structure of an extension number management table;
  • [0044]
    FIG. 19 is a flow chart showing the processing for determining a communication terminal with which a telephone user desires to communicate when a communication terminal on the LAN is utilized as a switcher terminal;
  • [0045]
    FIG. 20 is a flow chart showing the processing performed by the switcher terminal;
  • [0046]
    FIG. 21 shows the structure of a connected terminal determination notice command;
  • [0047]
    FIG. 22 shows the structure of a communication terminal address management table; and
  • [0048]
    FIG. 23 is a flow chart showing the processing for determining a communication terminal with which a telephone user desires to communicate when the public network is ISDN.
  • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0049]
    An embodiment of the present invention will hereinafter be described with reference to the accompanying drawings.
  • [0050]
    FIG. 1 shows the whole configuration of a voice communication system according to an embodiment of the present invention, including communication terminals 10-1, 10-2 for performing communications; LAN (Local Area Network) 1 to which the communication terminals 10-1, 10-2 are connected; a telephone 2; a public network 3; and a communication server 20 which is connected simultaneously to the public network 3 and the LAN 1.
  • [0051]
    It will be of course understood that while one telephone 2 and two communication terminals 10-1, 10-2 (hereinafter, an arbitrary communication terminal will be denoted by reference numeral 10) only are shown in FIG. 1, more telephones and communication terminals may be connected.
  • [0052]
    FIG. 2 shows in a block diagram form the configuration of the communication terminal 10 in FIG. 1. The communication terminal 10 comprises a voice input unit 11; a voice encoder 12; a memory 13; a LAN communication controller 14; a voice decoder 15; a voice output unit 16; a processor 17; and a storage unit 18. The LAN communication controller 14 is connected to the LAN 1. The voice encoder 12, voice decoder 15, LAN communication controller 14, memory 13, storage unit 18, and processor 17 are mutually connected through an internal bus 19.
  • [0053]
    The voice input unit 11 is provided for inputting voice information. Inputted voice information is encoded by the voice encoder 12. Coded voice information outputted from the voice encoder 12 is read into the memory 13, subjected to voice communication control processing, and then inputted to the LAN communication controller 14. Then, the LAN communication controller 14 transmits the encoded voice information to a communication terminal on the reception side through the LAN 1.
  • [0054]
    On the other hand, encoded voice information transmitted from the communication terminal on the transmission side through the LAN 1 is read into the memory 13 from the LAN communication controller 14, subjected to voice communication control processing, and inputted to the voice decoder 15 which decodes the encoded voice information inputted thereto. The decoded voice information is inputted to the voice output unit 16. In this way, the received voice is outputted.
  • [0055]
    The voice communication control processing in the communication terminal 10 is carried out by the processor 17 executing a predetermined program based on voice communication control processing information stored in the storage unit 18. The voice communication control processing in the communication terminal 10 will be late described in detail.
  • [0056]
    FIG. 3 shows in a block diagram form the allocation of programs in the memory 13. The memory 13 stores a voice communication program 31 for voice communication control processing and a voice mail program 32.
  • [0057]
    The voice communication program 31 is a program for receiving a voice communication request from a user or a voice communication request from another communication terminal through the LAN communication controller 14 connected to the internal bus 19, transmitting and receiving voice packets to and from a communication terminal of the other party, and providing voice communication functions similar to those of the telephone. The voice mail program 32 is a program for providing mail management functions such as transmission and reception of voice mails.
  • [0058]
    FIG. 4 is a flow chart showing the voice communication control processing performed by the voice communication program 31 on the communication terminal 10 for starting a voice communication when the communication terminal 10 has received a voice communication request form another communication terminal.
  • [0059]
    First, the program 31 determines at step 101 whether or not the communication terminal 10 is receiving a voice communication request from another communication terminal. If the communication terminal 10 is not receiving the voice communication request, the program 31 waits for the voice communication request to be received by the communication terminal. If, at step 101, the communication terminal 10 has received the voice communication request from another communication terminal, the user is informed at step 102 that the voice communication request has reached by displaying the information on the screen, generating an audio output, and so on. Then, the program 31 determines at step 103 whether or not the user has selected the communication.
  • [0060]
    If the user has selected to reject the communication or does not respond to the request for a predetermined time at step 103, a voice communication negating response is returned to the communication terminal which has sent the voice communication request at step 104, followed by the program 31 returning to step 101 to wait for the reception of the voice communication request from another communication terminal. If the user has selected to accept the communication at step 103, the communication terminal 10 returns a voice communication accepting response at step 105, thus establishing a connection between the communication terminal 10 and the external communication terminal which has sent the voice communication request. Subsequently, the communication processing after step 106 is started.
  • [0061]
    Specifically, encoded voice information is fetched from the voice encoder 12 (FIG. 2) at step 106, voice packets are created from the fetched encoded voice information at step 107, and the voice packets are transmitted to the communication terminal of the other party which has issued the voice communication request at step 108. Then, the voice communication program 31 on the communication terminal 10 determines at step 109 whether or not the voice packets from the communication terminal of the other party have been received.
  • [0062]
    If the voice packets have been received at step 109, encoded voice information in the voice packets are inputted to the voice decoder 15 (FIG. 2) at step 110. If the voice packets have not been received at step 109, or after the encoded voice information has been inputted to the voice decoder 15 at step 110, the program 31 determines at step 111 whether or not a voice communication end notice from the communication terminal of the other party has been received. If the voice communication end notice has been received, the communication is terminated, and the program again waits for the reception of another voice communication request from a communication terminal at step 101.
  • [0063]
    If the voice communication end request has not been received at step 111, the program 31 checks at step 112 whether or not the user has selected to terminate the voice communication. If the user has not selected the termination of the voice communication, the communication processing is continued from step 106. Conversely, if the user has selected the termination of the voice communication at step 112, a voice communication end notice is transmitted to the communication terminal of the other party to terminate the communication at step 113. Then the program 31 again returns to step 101 to wait for the reception of another voice communication request from a communication terminal.
  • [0064]
    While the foregoing processing procedure shows the voice communication control processing performed when the communication terminal has received a voice communication request from another communication terminal for starting the voice communication, it should be noted that “another communication terminal” herein referred to includes the communication server 20 in addition to the other communication terminals 10 connected to the LAN 1 in FIG. 1. Stated another way, the foregoing processing procedure does not distinguish the communication server 20 and other communication terminals 10 and treats them as the same communication terminals. A voice communication request from the communication server 20 means a request from a telephone 2 connected to the public network 3, as will be later described.
  • [0065]
    FIG. 5 shows a flow chart of the voice communication control processing performed when the voice communication program 31 on the communication terminal 10 starts a voice communication by a request of the user.
  • [0066]
    Steps 111-113 in FIG. 5 are the same as steps 111-113 in FIG. 4, and step 128 in FIG. 5 is a collection of steps 106-110 in FIG. 4.
  • [0067]
    First, the voice communication program 31 determines at step 121 whether or not the user has selected the communication processing. If the user has selected an item other than the communication processing, the program 31 performs other processing in response to the selection at step 122. If the user has selected the communication processing at step 121, a voice communication request is generated at step 123 using the address of the other party inputted by the user. A detailed format of the voice communication request will be later described with reference to FIG. 13. Next, the program 31 determines at step 124 whether or not the address of the other party with whom the user desires to speak is a telephone number consisting only of a sequence of numeric characters.
  • [0068]
    At step 124, if the address of the other party inputted by the user is a telephone number consisting only of a sequence of numeric characters, this means that the user has requested a voice communication with a telephone 2 connected to the external public network 3 through the communication server 20. In this case, the program 31 acquires at step 125 the communication terminal address assigned to the communication server 20 which has previously been stored in the storage unit 18 (FIG. 2), and treats the communication server 20 as the other party for the communication in the subsequent processing.
  • [0069]
    Conversely, if the address of the other party inputted by the user is not a telephone number consisting only of a sequence of numeric characters, the address of the other party can be regarded as the address of a communication terminal on the LAN 1. Therefore, this means that the user has issued a voice communication request to another communication terminal 10 connected to the LAN 1. In this case, the program 31 proceeds the processing, while treating the other communication terminal as the other party for the communication.
  • [0070]
    After determining at steps 124 and 125 the other party to be communicated, for which the voice communication processing is performed, a voice communication request is generated and transmitted to the communication terminal of the other party at step 126. The destination of the voice communication request is the communication server 20 when the other party is a telephone, and the communication terminal itself when the other party is the communication terminal. After step 126, the program 31 determines at step 127 whether or not a voice communication accepting response has been received from the communicating party. If the voice communication accepting response has been received, this means that the connection has been established, so that the communication processing after step 128 is executed. Since the communication processing after step 128 is the same as the foregoing procedure described in connection with FIG. 4, explanation thereon will be omitted.
  • [0071]
    If no voice communication accepting response has reached at step 127, a failure of communication connection is displayed at step 129. Then, the program 31 determines at step 130 whether or not the user requests to send a voice mail to the other party with whom the communication connection has been failed. If the user requests to send the voice mail, an inputted message is transmitted using the voice mail program 32 at step 131, and the program 31 again returns to step 121 to receive a selection of the user. If no voice mail sending is requested at step 130, the program 31 immediately returns to step 121.
  • [0072]
    It should be noted that a telephone number inputted by the user at step 121 may include ‘(‘,’)’, or ‘-’. In this case, upon determining at step 124 whether or not the address is a telephone number, a sequence of numeric characters including ‘(‘,’)’, or ‘-’ is also determined to be a telephone number. Further in this case, steps 130-131 may be omitted. At steps 130-131, a text mail or multimedia mail may be used instead of the voice mail.
  • [0073]
    FIG. 6 shows in a block diagram form the configuration of the communication server 20 in FIG. 1. The communication server 20 comprises a voice encoder 12; a memory 13′; a LAN communication controller 14; a voice decoder 15; a processor 17; a storage unit 18; and a public network communication controller 21. The LAN communication controller 14 is connected to the LAN 1, while the public network communication controller 21 is connected to the public network 3. The voice encoder 12, voice decoder 15, public network communication controller 21, LAN communication controller 14, memory 13′, storage unit 18, and processor 17 are mutually connected through an internal bus 19.
  • [0074]
    Voice information transmitted through the public network from a telephone is inputted to the voice encoder 12 through the public network communication controller 21. The voice encoder 12 encodes the inputted voice information and outputs the encoded voice information. The encoded voice information outputted from the voice encoder 12 is read into the memory 13′, subjected to voice communication control processing, and then inputted to the LAN communication controller 14 which transmits the inputted encoded voice information to a communication terminal through the LAN 1.
  • [0075]
    On the other hand, encoded voice information transmitted through the LAN 1 from a communication terminal is read into the memory 13′ from the LAN communication controller 14, subjected to the voice communication control processing, and then inputted to the voice decoder 15. The voice decoder 15 decodes the encoded voice information inputted thereto. The decoded voice information is inputted to the public network communication controller 21 which in turn transmits the voice represented by the voice information through the public network 3 to a telephone.
  • [0076]
    The voice communication control processing in the communication server 20 is carried out by the processor 17 which executes a predetermined program based on voice communication control processing information stored in the storage unit 18. This voice communication control processing in the communication server 20 will be described later in detail.
  • [0077]
    FIG. 7 shows the allocation of programs in the memory 13′ of the communication server 20. The memory 13′ of the server 20 stores a voice communication server program 22 for the voice communication control processing and a voice mail server program 23.
  • [0078]
    The voice communication server program 22 is a program for accepting a call setting request from a telephone received from the public network communication controller 21 or a voice communication request from a communication terminal through the LAN communication controller 14 connected to the internal bus 19, editing voice packets transmitted from the telephone into voice packets, transmitting the voice packets to the communication terminal, converting voice packets received from the communication terminal to voice information, and transmitting the voice information to the telephone, thus providing voice communication functions between the communication terminal connected to the LAN 1 and the telephone connected to the public network 3, similar to the conventional functions between telephones.
  • [0079]
    The voice mail server program 23 is a program for providing a voice mail functions of voice mail.
  • [0080]
    FIG. 8 is a flow chart schematically showing the voice communication control processing performed when the voice communication server program 22 on the communication server 20 has received a call setting request from a telephone 2 connected to the public network 3 (FIG. 1) for starting a voice communication between the telephone 2 and a communication terminal 10 connected to the LAN 1.
  • [0081]
    First, the program 22 determines at step 201 whether or not a call setting request from the public network 3 has been received. If the call setting request has not been received, the program 22 continuously waits for the call setting request from the public network 2 at step 201. If a call setting request has been received at step 201, a call setting response is returned to the public network 3 at step 202 to set a call (whereby a communication available state is set between the communication server 20 and the telephone), and the program executes at step 203 processing for determining a communication terminal to be connected.
  • [0082]
    The processing for determining a communication terminal to be connected at step 203 determines which of communication terminals 10 connected to the LAN 1 the user utilizing the telephone 2, who has issued the call setting request, desires to communicate with. Details of the processing will be later explained in detail with reference to FIG. 17 and so on.
  • [0083]
    Subsequent to step 203, the program 22 determines at step 204 whether or not a communication terminal with which the user desires to communicate has been determined. If it has not been determined, the call is released at step 208, and the program 22 again waits for a call setting request to be received from the public network 3.
  • [0084]
    If, at step 204, a communication terminal with which the user desires to communicate has been determined, a voice communication request is transmitted to the communication terminal at step 205, and then the program 22 determines at step 206 whether or not a voice communication accepting response has been received from the communication terminal of the other party. If the accepting response has been received, which means that a connection between the communication server 20 and the communication terminal has been established, the processing during the communication is performed at step 207. After the communication is terminated, the call is released at step 208, followed by the program 22 returning to step 201 to again wait for the communication server 20 to receive a call setting request from the public network 3. The processing during the communication at step 207 will be later described in detail with reference to FIG. 10.
  • [0085]
    At step 206, if the voice communication negating response has been received from the communication terminal of the other party, a voice message guiding that the other party did not accept the call is sent at step 209 to the telephone which has issued the call setting request. Then, a guidance for inputting a voice mail is outputted to the telephone user at step 220, an inputted message is registered at step 221 in the voice mail server program 23 in FIG. 7 as a voice mail, and the call is released at step 208. Then, the program 22 again returns to step 201 to wait for the communication server 20 to receive a call setting request from the public network 3.
  • [0086]
    It should be noted that steps 220-221 may be omitted, and the voice mail server program 23 may be located on a different communication terminal.
  • [0087]
    FIG. 9 is a flow chart schematically showing the voice communication control processing performed when the voice communication server program 22 on the communication server 20 has received a voice communication request from a communication terminal connected to the LAN 1 for starting a voice communication between the communication terminal 10 and a telephone 2 connected to the public network 3. Since steps 207 and 208 are the same as those in FIG. 8, explanation thereon will be omitted.
  • [0088]
    First, the program 22 determines at step 231 whether or not a voice communication request has been received from a communication terminal 10 connected to the LAN 1. If the voice communication request has not been received from a communication terminal 10, the program 22 remains at step 231 and waits for the voice communication request to be received from a communication terminal 10 connected to the LAN 1. If the voice communication request has been received at step 231, a call setting request is transmitted to the public network 3 for connection with a telephone 2 having the telephone number specified in the voice communication request.
  • [0089]
    After a call setting response has been received from the public network 3 at step 233, the program 22 determines at step 234 whether or not the response is an accepting response. If it is the accepting response, a voice communication accepting response is returned to the communication terminal 10 at step 235, and the communication processing after step 207 is performed. At step 234, if the response is a negating response, a voice communication negating response is transmitted to the communication terminal 10 at step 236, and then the program 22 returns to step 231 to again wait for a voice communication request to be received from a communication terminal 10 connected to the LAN 1.
  • [0090]
    FIG. 10 is a flow chart of the processing performed in the communication server 20 during a communication which has been shown in step 207 in FIGS. 8 and 9.
  • [0091]
    Steps 106-108 in FIG. 10 are the same as steps 106-108 shown in FIG. 4 executed in the communication terminal. Specifically, these steps perform the processing for encoding voice data inputted from a telephone 2 to the public network communication controller 21 (FIG. 6) through the public network 3 by the voice encoder 12, creating voice packets, and transmitting the voice packets to a communication terminal 10 through the LAN 1.
  • [0092]
    Steps 109, 110 in FIG. 10 perform the same processing as steps 109, 110 shown in FIG. 4 executed in the communication terminal. Specifically, these steps perform the processing for decoding voice packets inputted from a communication terminal 10 to the LAN communication controller 14 (FIG. 6) through the LAN 1 by the voice decoder 15 and transmitting the decoded voice information to the telephone 2 through the public network 3.
  • [0093]
    Steps 111, 210, 113 in FIG. 10 correspond to steps 111, 112, 113 in FIG. 4.
  • [0094]
    Specifically, the voice communication program 22 on the communication server 20 determines at step 111 whether or not a voice communication end notice has been received from the communication terminal 10. If the voice communication end notice has been received, the processing during the communication is terminated. Conversely, if the voice communication end notice has not been received at step 111, the program 22 determines at step 210 whether or not a call releasing request has been received from the public network 3. If the call releasing request has not been received from the public network 3, the communication processing after step 106 is continued. Conversely, at step 210, if the call releasing request has been received from the public network 3, a voice communication end notice is transmitted to the communication terminal 10 at step 113, followed by terminating the communication.
  • [0095]
    FIG. 11 shows an exemplary sequence of the processing performed when a telephone 2 connected to the public network 3 and a communication terminal 10 connected to the LAN 1 communicate with each other through the communication server 20 by a request from the communication terminal 10 connected to the LAN 1 in FIG. 1.
  • [0096]
    An arrow 401 represents a flow of operations performed by the communication terminal 10 connected to the LAN 1; an arrow 402 a flow of operations performed by the communication server 20 simultaneously connected to the LAN 1 and the public network 3; and an arrow 403 a flow of operations performed by the telephone 2 connected to the public network 3. When the user of the communication terminal selects a communication with a telephone (450), the communication terminal transmits a voice communication request to the communication server (451). The communication server, upon receiving the voice communication request, responsively transmits a call setting request to the telephone (452), and the telephone, in response to the reception of the call setting request, generates the ringing signal (453).
  • [0097]
    When the telephone user takes up the receiver (off-hook, 454), a call setting response is returned from the telephone to the communication server (455). The communication server, in response to the reception of this call setting response, transmits a voice communication response to the communication terminal (456), thereby entering a communication available state (457).
  • [0098]
    When the user hangs on the receiver (on-hook, 458), a call releasing request is transmitted from the telephone to the communication server (459). The communication server, in response to the reception of the call releasing request, returns a call releasing response to the telephone (461) and transmits a voice communication end notice to the communication terminal (460). The communication terminal, in response to the reception of, the voice communication end notice, terminates the communication (462).
  • [0099]
    FIG. 12 shows an exemplary sequence of the processing performed when a telephone 2 connected to the public network 3 and a communication terminal 10 connected to the LAN 1 in FIG. 1 communicate with each other through the communication server 20 by a request from the telephone 2 connected to the public network 3. Arrows 401-403 shows flows of operations performed by the respective parts similarly to FIG. 11.
  • [0100]
    When the telephone user dials the telephone number of the communication server (404), a call setting request is transmitted from the the telephone to the communication server (405). The communication server, in response to the reception of this call setting request, returns a call setting response to the telephone (406), and determines a communication terminal with which the telephone user desires to communicate through the communication server (407).
  • [0101]
    The communication server transmits a voice communication request to the communication terminal determined by the connected communication terminal determining step (407). The communication terminal receiving this voice communication request calls the user (409). If the user utilizing the communication terminal selects communication in response to the call (410), the communication terminal transmits a voice communication accepting response to the communication server (411), thereby entering an in-communication state (412).
  • [0102]
    If the user of the communication terminal selects termination of the communication (413), a voice communication end notice is transmitted from the communication terminal to the communication server (414). The communication server, in response to the reception of this voice communication end notice, transmits a call releasing request to the telephone (415). The telephone, in response to the reception of the call releasing request, transmits a call releasing response to the communication server (416). The reception of the call releasing response by the communication server results in terminating the communication processing between the telephone and the communication terminal.
  • [0103]
    FIG. 13 shows the structure of a voice communication request command which is transmitted when a voice communication request is issued. A field 501 is assigned to a communication header used by the LAN communication controller; 502 to an identifier indicative of the voice communication request; 503 to the communication terminal address of a communication terminal itself which transmits the voice communication request; and 512 to the communication address of the other party to which the voice communication is requested. When the other party to be communicated is a communication terminal, the communication terminal address of the communication terminal is set as the address 512 of the other party. The destination address of such a voice communication request command is the communication terminal address. When the other party to be communicated is a telephone, its telephone number is set as the address 512 of the other party. The destination address of such a voice communication request command is the communication terminal address of the communication server. The communication terminal address 503 of the communication terminal transmitting the voice communication request may be omitted.
  • [0104]
    FIG. 14 shows the structure of a voice communication response command which is an answer to the voice communication request. A field 501 is assigned to a communication header like that of the voice communication request command of FIG. 13. A field 504 is assigned to an identifier indicative of the voice communication response; and 505 to a result indicating whether or not a communication is performed in response to a voice communication request.
  • [0105]
    FIG. 15 shows the structure of a voice communication command for transmitting and receiving voice information. A field 501 is assigned to a communication header like that of the voice communication request of FIG. 13. A field 506 is assigned to a voice communication header used for the communication processing, and 507 to encoded voice information.
  • [0106]
    FIG. 16 shows the structure of a voice communication end notice command. A field 501 is assigned to a communication header like that of the voice communication request of FIG. 13. A field 508 is assigned to an identifier indicative of the voice communication end notice command.
  • [0107]
    FIG. 17 shows a flow chart of the processing shown in step 203 of FIG. 8 and denoted by reference numeral 407 in FIG. 12 for determining a communication terminal with which a telephone user desires to communicate. Given herein as an example is the processing of determining a communication terminal to be communicated by using push buttons of the telephone.
  • [0108]
    First, at step 301, an operation guidance saying “Input an extension number through push buttons and depress ‘#’ after the extension number” is outputted to the telephone. Next, at step 302, the input operation of the user through the push buttons is awaited, and a tone corresponding to a depressed push button is converted to a numeral and stored. Then, it is determined at step 304 whether or not the input of an extension number is completed by checking whether the tone corresponding to the depressed push button represents ‘#’. If it is determined that the input of an extension number is not terminated, the flow returns to step 302 to wait for the user to input a numeral through a push button.
  • [0109]
    At step 304, if the input of an extension number has been terminated, the communication terminal address of a communication terminal having the inputted extension number is found from an extension number management table to determine the address of a communication terminal with which the telephone user desires to communicate. The extension number management table will be later described in detail with reference to FIG. 18.
  • [0110]
    When the communication terminal address can be found at step 305, this communication terminal determining processing is terminated. Conversely, if the communication terminal address cannot be found at step 305, a guidance saying “There is no communication terminal having the inputted extension number” is outputted to the telephone, and the processing is terminated with a conclusion that a communication terminal with which the user desires to communicate was not able to be determined.
  • [0111]
    The messages outputted at steps 301, 306 may have different contents. Also, the symbol ‘#’ for indicating that the input of an extension number is completed may be replaced with a different symbol. Further, respective communication terminals connected to the LAN may be assigned unique telephone numbers such that a communication is requested with the telephone number thus assigned from a telephone connected to the telephone network. In this case, the communication server holds telephone numbers of all the communication terminals connected to the LAN. In actual processing for realizing this alternative, steps 301-304 in FIG. 17 are omitted, and a pertinent communication terminal address may be found based on a telephone number inputted from the telephone at step 305.
  • [0112]
    FIG. 18 shows the structure of the extension number management table which has been referred to at step 305 in FIG. 17. A column 311 is provided for the extension number, and column 312 for a communication terminal address corresponding to the extension number. If the communication server holds telephone numbers for a number of communication terminals connected to the LAN, the column 311 for the extension number may be used for storing telephone numbers assigned to respective communication terminals.
  • [0113]
    FIG. 19 is a flow chart showing another example of the processing shown in step 203 of FIG. 8 and denoted by reference numeral 407 in FIG. 12 for determining a communication terminal with which a telephone user desires to communicate. This example shows how to determine a desired communication terminal by utilizing a communication terminal connected to the LAN as a switcher terminal.
  • [0114]
    First, at step 321, a voice communication request is transmitted to the switcher terminal, and it is determined at step 322 whether or not an accepting response has been received from the switcher terminal. If the accepting response has been received, the communication processing is performed between the switcher terminal and a telephone at step 323. After the termination of the communication processing, by a connected terminal determination notice received from the switcher terminal, the result of whether the address of a communication terminal has been determined or not is acquired at step 324. When a negating response is received from the switcher terminal at step 322, a message saying that a connection was impossible is outputted to the telephone at step 325, thus concluding that no communication terminal was determined.
  • [0115]
    FIG. 20 shows a flow chart of the processing performed by the switcher terminal for determining a communication terminal with which a communication is desired, using the switcher terminal such as the processing of FIG. 19.
  • [0116]
    Steps 101, 102 perform similar processing to the corresponding steps in FIG. 4. Specifically, reception of a voice communication request is awaited at step 101, and when the voice communication request is received from the communication server, a call is outputted at step 102. In response to this call output, a switcher receives the call at the switcher terminal at step 331. Then, a voice communication response is returned at step 105. This step 105 is the same as step 105 in FIG. 4.
  • [0117]
    After returning the voice communication response, the switcher has a conversation with telephone user at step 332 to find out the extension number or name of the other party with whom the user desires to communicate, searches the communication terminal address management table for the communication terminal address based on the information at step 333. If the switcher can find the communication terminal address at step 333, a voice communication end notice is transmitted at step 113 to terminate the conversation with the telephone user. Then, a connected terminal determination notice including the detected communication terminal address is transmitted to the communication server at step 334, thus terminating the processing.
  • [0118]
    If the communication terminal address cannot be found at step 333, the switcher orally explains the telephone user at step 335 that no communication terminal conforming to the user's information has been found. Thereafter, a voice communication end notice is transmitted at step 113 to terminate the conversation with the telephone user, and a connected terminal determination notice is transmitted to the communication server at step 336 for informing that no communication terminal was determined. Thus, the processing is terminated.
  • [0119]
    FIG. 21 shows the structure of a connected terminal determination notice command. A field 501 is assigned to a communication header like that of the voice communication request of FIG. 13; 509 to an identifier indicating that this command is the connected terminal determination notice command; 510 to a result indicating whether or not a communication terminal address has been determined; and 511 to the communication terminal address of a communication terminal to be connected. The communication terminal address 511 is valid only when the result 510 indicates that the communication terminal address has been determined. If the result 510 indicates that the communication terminal address has not been determined, the communication terminal address 511 is omitted.
  • [0120]
    FIG. 22 shows the structure of the communication terminal address management table used when a communication terminal with which the user desires to communicate is determined by utilizing the switcher terminal, as explained in connection with FIGS. 19-21. Columns 311 and 312 for extension number and communication terminal address are the same as those in FIG. 18. A column 337 is additionally provided for storing names of users. This table enables the switcher to search for the communication terminal address from the name, when the telephone user inputs the name to specify a person with whom he desires to communicate.
  • [0121]
    FIG. 23 is a flow chart showing a further example of the processing shown in step 203 of FIG. 8 and denoted by reference numeral 407 in FIG. 12 for determining a communication terminal with which the telephone user desires to communicate.
  • [0122]
    Assume, in this example, that the communication network is ISDN (Integrated Services Digital Network). In accordance with the ISDN, a variety of parameters can be set to messages running through the line. Thus, in this example, an extension number specified by the user is added to user information or communication address in a call setting request sent from a telephone, so that the call setting request is transmitted together with the extension number. In the connected communication terminal determination processing of FIG. 23, the extension number in the call setting request is acquired for determining a communication terminal.
  • [0123]
    First, at step 340, data on extension number is fetched from parameters in the call setting request. Next, at step 341, the communication terminal address of the pertinent extension number is found from the extension number management table, the structure of which is shown in FIG. 18. When the communication address can be found, it is determined as the address of a communication terminal to be connected, followed by the termination of the processing. Conversely, if no communication terminal address corresponding to the fetched extension number can be found at step 341, the processing is terminated with a conclusion that the communication terminal address has not been determined.
  • [0124]
    As a modified example of the present invention, the LAN communication controller 14 shown in FIG. 2 may be adapted to simultaneously support a plurality of communication protocols, for example, TCP/IP protocol and UDP/IP protocol, such that the voice communication packet is transmitted utilizing the UDP/IP protocol in the processing flows shown in FIGS. 4 and 10, and control information such as the voice communication request command and voice communication end notice command shown in FIG. 5 and the connected terminal determination result notice command shown in FIG. 19 are transmitted utilizing the TCP/IP protocol. The appropriate use of different protocols in this way will prevent a delay in the arrival of the voice communication packets and reliably control the start, termination, and so on of the voice communication.
  • [0125]
    According to the present invention, when the user utilizing a communication terminal on the LAN inputs a communication terminal address, communication terminals on the LAN can directly communicate with each other without intervention of the communication server. In addition, when the user utilizing a communication terminal on the LAN inputs a telephone number, a communication between the communication terminal on the LAN and a telephone connected to a public network is enabled through the communication server which is simultaneously connected to the LAN and public network.
  • [0126]
    Also, according to the foregoing embodiment, if the user utilizing a communication terminal on the LAN cannot realize a voice communication with a communication terminal on the LAN after attempts of doing so, a variety of mails can be sent to the communication terminal of the other party without requiring the user to start another program or input a communication address.
  • [0127]
    Further, according to the foregoing embodiment, since the communication server which is simultaneously connected to the LAN and public network provides a function of specifying a communication terminal from a telephone, the telephone which cannot directly specify a communication terminal on the LAN can also initiate a call to a communication terminal on the LAN.

Claims (6)

  1. 1. A communication device connected, via a packet switching network, to a communication server performing a voice communication process with a telephone connected to a line employing a telephone number scheme, comprising:
    a communication controller connected to the packet switching network, a voice input unit inputting voice data,
    a voice encoder encoding the voice data input by the voice input unit, a voice decoder decoding encoded data into voice data,
    a voice output unit outputting voice data encoded by the voice decoder, a processor processing a voice communication process, and
    a storage storing a communication address of the communication server.
  2. 2. The communication device according to claim 1,
    wherein the processor processes to transmit a voice communication request packet when destination information is input to the communication device, and wherein the voice communication request packet includes the destination information and a communication address of the communication device.
  3. 3. The communication device according to claim 1,
    wherein the processor processes to transmit a voice communication request packet when destination information is input to the communication device, and wherein the voice communication request packet includes the destination information, a communication address of the communication device and the communication address of the communication server.
  4. 4. The communication device according to claim 1,
    wherein the processor obtains the communication address of the communication server from the storage when a telephone number corresponding to the telephone is input to the communication device as destination information.
  5. 5. The communication device according to claim 4,
    wherein the processor processes to transmit the voice communication request packet, including the telephone number, the communication address of the communication device and the communication address of the communication server to the communication server.
  6. 6. The communication device according to claim 1,
    wherein the processor processes to transmit the voice communication request packet, including a communication address of another communication device as the destination information and the communication address of the communication device, to the other communication device when the destination address is not consisting of numeric characters.
US12893292 1993-12-15 2010-09-29 Voice communication system and voice communication method Abandoned US20110013622A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP05-343162 1993-12-15
JP34316293A JPH07170288A (en) 1993-12-15 1993-12-15 Voice communication system and voice communication method
US08357189 US5604737A (en) 1993-12-15 1994-12-13 Voice communication system and voice communication method
US08743849 US6240085B1 (en) 1993-12-15 1996-11-05 Voice communication system and voice communication method
US09836299 US7167467B2 (en) 1993-12-15 2001-04-18 Voice communication system and voice communication method
US11319737 US7502363B2 (en) 1993-12-15 2005-12-29 Voice communication system and voice communication method
US11717062 US7756117B2 (en) 1993-12-15 2007-03-13 Voice communication system and voice communication method
US11907851 US7920550B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US12893292 US20110013622A1 (en) 1993-12-15 2010-09-29 Voice communication system and voice communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12893292 US20110013622A1 (en) 1993-12-15 2010-09-29 Voice communication system and voice communication method

Publications (1)

Publication Number Publication Date
US20110013622A1 true true US20110013622A1 (en) 2011-01-20

Family

ID=18359398

Family Applications (11)

Application Number Title Priority Date Filing Date
US08357189 Expired - Lifetime US5604737A (en) 1993-12-15 1994-12-13 Voice communication system and voice communication method
US08743849 Expired - Lifetime US6240085B1 (en) 1993-12-15 1996-11-05 Voice communication system and voice communication method
US09836299 Expired - Fee Related US7167467B2 (en) 1993-12-15 2001-04-18 Voice communication system and voice communication method
US11319737 Expired - Fee Related US7502363B2 (en) 1993-12-15 2005-12-29 Voice communication system and voice communication method
US11717062 Expired - Fee Related US7756117B2 (en) 1993-12-15 2007-03-13 Voice communication system and voice communication method
US11907848 Expired - Fee Related US7808976B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907849 Expired - Fee Related US7724729B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907850 Expired - Fee Related US7724730B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907851 Expired - Fee Related US7920550B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907847 Expired - Fee Related US7738447B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US12893292 Abandoned US20110013622A1 (en) 1993-12-15 2010-09-29 Voice communication system and voice communication method

Family Applications Before (10)

Application Number Title Priority Date Filing Date
US08357189 Expired - Lifetime US5604737A (en) 1993-12-15 1994-12-13 Voice communication system and voice communication method
US08743849 Expired - Lifetime US6240085B1 (en) 1993-12-15 1996-11-05 Voice communication system and voice communication method
US09836299 Expired - Fee Related US7167467B2 (en) 1993-12-15 2001-04-18 Voice communication system and voice communication method
US11319737 Expired - Fee Related US7502363B2 (en) 1993-12-15 2005-12-29 Voice communication system and voice communication method
US11717062 Expired - Fee Related US7756117B2 (en) 1993-12-15 2007-03-13 Voice communication system and voice communication method
US11907848 Expired - Fee Related US7808976B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907849 Expired - Fee Related US7724729B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907850 Expired - Fee Related US7724730B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907851 Expired - Fee Related US7920550B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method
US11907847 Expired - Fee Related US7738447B2 (en) 1993-12-15 2007-10-18 Voice communication system and voice communication method

Country Status (2)

Country Link
US (11) US5604737A (en)
JP (1) JPH07170288A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040165573A1 (en) * 1995-10-05 2004-08-26 Kubler Joseph J. Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

Families Citing this family (225)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463149B1 (en) * 1995-04-10 2002-10-08 Edify Corporation Web page synchronization system and method
US7082106B2 (en) * 1993-01-08 2006-07-25 Multi-Tech Systems, Inc. Computer-based multi-media communications system and method
JPH07170288A (en) * 1993-12-15 1995-07-04 Hitachi Ltd Voice communication system and voice communication method
US20100208634A1 (en) 1994-10-11 2010-08-19 Arbinet Corporation System and Method For Managing Multimedia Communications Across Convergent Networks
US6564321B2 (en) 1995-04-28 2003-05-13 Bobo Ii Charles R Systems and methods for storing, delivering, and managing messages
FI104869B (en) * 1995-05-24 2000-04-14 Ericsson Telefon Ab L M A method for establishing a speech connection between the network and the intelligent network
US6208639B1 (en) * 1995-08-31 2001-03-27 Kabushiki Kaisha Toshiba Computer network system with telephonic function
US6108704A (en) * 1995-09-25 2000-08-22 Netspeak Corporation Point-to-point internet protocol
US6430282B1 (en) * 1995-09-29 2002-08-06 Nortel Networks Limited Methods and apparatus for originating voice calls
US6377576B1 (en) * 1995-10-10 2002-04-23 Intel Corporation Telephone call setup procedure
US20010040885A1 (en) * 1995-10-13 2001-11-15 Howard Jonas Method and apparatus for transmitting and routing voice telephone calls over a packet switched computer network
US5742596A (en) * 1995-11-12 1998-04-21 Phonet Communication Ltd. Network based distributed PBX system
US6353611B1 (en) 1995-11-27 2002-03-05 At&T Corp. Call waiting feature for a telephone line connected to the internet
ES2108646B1 (en) * 1995-11-30 1998-07-01 Telefonica Nacional Espana Co Structure for an electronic information system.
JP3876452B2 (en) * 1995-12-18 2007-01-31 ソニー株式会社 Call system and call method
JP3644108B2 (en) * 1995-12-19 2005-04-27 ソニー株式会社 Call system, connection device, a communication terminal device and call METHOD
US7336649B1 (en) * 1995-12-20 2008-02-26 Verizon Business Global Llc Hybrid packet-switched and circuit-switched telephony system
US7382766B1 (en) * 1997-07-24 2008-06-03 Oki Electric Industry Co., Ltd. Line concentrator for telephone set and communication method of LAN
US7561538B2 (en) * 1997-07-24 2009-07-14 Oki Electronic Industry Co. Ltd. Concentrator for speech telephones and method of communication over LAN using same
KR100923483B1 (en) * 1996-02-09 2009-10-27 아이-링크 시스템즈, 아이엔씨. Voice transmission system and method thereof
US6343115B1 (en) * 1996-02-13 2002-01-29 At&T Corp Method of announcing an internet call
GB9603582D0 (en) 1996-02-20 1996-04-17 Hewlett Packard Co Method of accessing service resource items that are for use in a telecommunications system
US9014177B2 (en) 1996-03-06 2015-04-21 Bear Creek Technologies, Inc. System for interconnecting standard telephony communications equipment to internet
EP0893021A1 (en) * 1996-04-12 1999-01-27 Northern Telecom Limited Terminating data voice call architecture
US6041103A (en) * 1996-04-16 2000-03-21 Lucent Technologies, Inc. Interactive call identification
US6154445A (en) * 1996-04-18 2000-11-28 Bell Atlantic Network Services, Inc. Telephony communication via varied redundant networks
US5852610A (en) * 1996-05-15 1998-12-22 Olaniyan; Olajide O. Remote broadcast listening system which receives radio/broadcast signals using receivers which includes antennas and interconnects receivers to customer telephones/interface means
JP2000511725A (en) * 1996-06-04 2000-09-05 テレフオンアクチーボラゲツト エル エム エリクソン(パブル) Access network via a shared medium
DE69724611T2 (en) 1996-06-04 2004-04-01 Telefonaktiebolaget Lm Ericsson (Publ) Methods for deflecting an incoming phone call in an ongoing Internet session
US6014379A (en) * 1996-06-26 2000-01-11 Bell Atlantic Network Services, Inc. Telecommunications custom calling services
US6069890A (en) 1996-06-26 2000-05-30 Bell Atlantic Network Services, Inc. Internet telephone service
US6021126A (en) * 1996-06-26 2000-02-01 Bell Atlantic Network Services, Inc. Telecommunication number portability
US6298120B1 (en) * 1996-06-28 2001-10-02 At&T Corp. Intelligent processing for establishing communication over the internet
US6532230B1 (en) * 1996-07-08 2003-03-11 Altigen Communications, Inc. Mixed-media communication apparatus and method
CA2180685C (en) * 1996-07-08 2003-09-09 Wynn Quon Internet telephony gateway
US6078579A (en) * 1996-07-25 2000-06-20 Wjw Technologies Inc. Telephonic systems for communication over computer networks
US6404732B1 (en) * 1996-07-30 2002-06-11 Agere Systems Guardian Corp. Digital modulation system using modified orthogonal codes to reduce autocorrelation
EP0948859A1 (en) 1996-08-14 1999-10-13 Northern Telecom Limited Internet-based telephone call manager
EP0825506B1 (en) * 1996-08-20 2013-03-06 Invensys Systems, Inc. Methods and apparatus for remote process control
US6728784B1 (en) * 1996-08-21 2004-04-27 Netspeak Corporation Collaborative multimedia architecture for packet-switched data networks
US6584094B2 (en) * 1996-09-12 2003-06-24 Avaya Technology Corp. Techniques for providing telephonic communications over the internet
US5974043A (en) * 1996-09-16 1999-10-26 Solram Electronics Ltd. System and method for communicating information using the public switched telephone network and a wide area network
US5892764A (en) 1996-09-16 1999-04-06 Sphere Communications Inc. ATM LAN telephone system
US6501753B1 (en) * 1996-09-19 2002-12-31 Qwest Communications International, Inc. Architecture and method for using an advanced intelligent network (AIN) to reduce voice switch and trunk loading
US5963551A (en) * 1996-09-30 1999-10-05 Innomedia Pte Ltd. System and method for dynamically reconfigurable packet transmission
US6243398B1 (en) * 1996-10-21 2001-06-05 Vocaltec Communications Ltd. System and method for personal multimedia communication over a packet switched network
US6016307A (en) 1996-10-31 2000-01-18 Connect One, Inc. Multi-protocol telecommunications routing optimization
US6473404B1 (en) * 1998-11-24 2002-10-29 Connect One, Inc. Multi-protocol telecommunications routing optimization
CA2217838C (en) * 1996-11-07 2003-07-29 At&T Corp. Wan-based voice gateway
US6909708B1 (en) 1996-11-18 2005-06-21 Mci Communications Corporation System, method and article of manufacture for a communication system architecture including video conferencing
US6335927B1 (en) 1996-11-18 2002-01-01 Mci Communications Corporation System and method for providing requested quality of service in a hybrid network
US6690654B2 (en) 1996-11-18 2004-02-10 Mci Communications Corporation Method and system for multi-media collaboration between remote parties
US6754181B1 (en) 1996-11-18 2004-06-22 Mci Communications Corporation System and method for a directory service supporting a hybrid communication system architecture
US5999525A (en) * 1996-11-18 1999-12-07 Mci Communications Corporation Method for video telephony over a hybrid network
US5867495A (en) * 1996-11-18 1999-02-02 Mci Communications Corporations System, method and article of manufacture for communications utilizing calling, plans in a hybrid network
US6377568B1 (en) * 1996-11-20 2002-04-23 Netspeak Corporation Method and apparatus for performing call matching for internet telephones in legacy call centers
US5987115A (en) * 1996-12-03 1999-11-16 Northern Telecom Limited Systems and methods for servicing calls by service agents connected via standard telephone lines
US7149815B1 (en) 1996-12-06 2006-12-12 The Distribution Systems Research Institute Integrated information communication system using internet protocol
US6618366B1 (en) 1997-12-05 2003-09-09 The Distribution Systems Research Institute Integrated information communication system
GB2371959B (en) * 1996-12-06 2002-10-09 Distrib Systems Res Inst The Integrated information communication system
GB2320167B (en) 1996-12-06 2002-08-21 Distrib Systems Res Inst The Integrated information communication system
US6078582A (en) 1996-12-18 2000-06-20 Bell Atlantic Network Services, Inc. Internet long distance telephone service
US6236653B1 (en) * 1996-12-23 2001-05-22 Lucent Technologies Inc. Local telephone service over a cable network using packet voice
US6230009B1 (en) * 1996-12-27 2001-05-08 At&T Wireless Services, Inc. Method and apparatus for alerting a station in one network of a requested communication from a second network
US6829231B1 (en) * 1996-12-31 2004-12-07 Mci Communications Corporation Internet phone system and directory search engine using same
US6026086A (en) * 1997-01-08 2000-02-15 Motorola, Inc. Apparatus, system and method for a unified circuit switched and packet-based communications system architecture with network interworking functionality
US6041045A (en) * 1997-02-03 2000-03-21 Motorola, Inc. Method for accessing an information network from a radio communication system
US6600733B2 (en) * 1997-02-06 2003-07-29 Verizon Laboratories Inc. System for interconnecting packet-switched and circuit-switched voice communications
US6731625B1 (en) 1997-02-10 2004-05-04 Mci Communications Corporation System, method and article of manufacture for a call back architecture in a hybrid network with support for internet telephony
USRE46243E1 (en) 1997-02-10 2016-12-20 Genesys Telecommunications Laboratories, Inc. In-band signaling for routing
US6104802A (en) 1997-02-10 2000-08-15 Genesys Telecommunications Laboratories, Inc. In-band signaling for routing
US7031442B1 (en) 1997-02-10 2006-04-18 Genesys Telecommunications Laboratories, Inc. Methods and apparatus for personal routing in computer-simulated telephony
WO1999067922A1 (en) * 1998-06-25 1999-12-29 Mci Worldcom, Inc. Method and system for multicasting call notifications
USRE46528E1 (en) 1997-11-14 2017-08-29 Genesys Telecommunications Laboratories, Inc. Implementation of call-center outbound dialing capability at a telephony network level
US6480600B1 (en) 1997-02-10 2002-11-12 Genesys Telecommunications Laboratories, Inc. Call and data correspondence in a call-in center employing virtual restructuring for computer telephony integrated functionality
US6064667A (en) * 1997-02-10 2000-05-16 Genesys Telecommunications Laboratories, Inc. Apparatus and methods enhancing call routing to and within call centers
US6683870B1 (en) 1997-02-10 2004-01-27 Mci Communications Corporation Method and system for multicasting call notifications
US6144671A (en) * 1997-03-04 2000-11-07 Nortel Networks Corporation Call redirection methods in a packet based communications network
US6501740B1 (en) * 1997-03-07 2002-12-31 At&T Corp. System and method for teleconferencing on an internetwork comprising connection-oriented and connectionless networks
US6542497B1 (en) * 1997-03-11 2003-04-01 Verizon Services Corp. Public wireless/cordless internet gateway
US6574216B1 (en) * 1997-03-11 2003-06-03 Verizon Services Corp. Packet data network voice call quality monitoring
US6026087A (en) * 1997-03-14 2000-02-15 Efusion, Inc. Method and apparatus for establishing a voice call to a PSTN extension for a networked client computer
US6310941B1 (en) * 1997-03-14 2001-10-30 Itxc, Inc. Method and apparatus for facilitating tiered collaboration
US6870827B1 (en) 1997-03-19 2005-03-22 Verizon Services Corp. Voice call alternative routing through PSTN and internet networks
DE69800967T2 (en) * 1997-03-31 2001-10-18 Ericsson Telefon Ab L M Method and arrangement for connecting a computer to a telephone exchange system via the Internet in order to establish a telephone connection
US6937703B1 (en) * 1997-03-31 2005-08-30 Telefonaktiebolaget Lm Ericsson Connection of a computer to a telephone exchange
US6046762A (en) * 1997-04-01 2000-04-04 Cosmocom, Inc. Multimedia telecommunication automatic call distribution system
JP3436471B2 (en) 1997-05-26 2003-08-11 沖電気工業株式会社 Telephone communication method and telephone communication system
US6335928B1 (en) * 1997-06-06 2002-01-01 Lucent Technologies, Inc. Method and apparatus for accessing and interacting an internet web page using a telecommunications device
GB9712895D0 (en) * 1997-06-20 1997-08-20 Philips Electronics Nv Network communication system user message transmission
US6891824B1 (en) * 1997-06-30 2005-05-10 Emc Corporation Audible communication with a modem over a wide area network
US6519246B1 (en) * 1997-06-30 2003-02-11 At&T Corp. Internet-enabled voice-response service
US6078580A (en) * 1997-07-25 2000-06-20 International Business Machines Corporation Operator status server for voice over data
EP1021757A1 (en) * 1997-07-25 2000-07-26 Starvox, Inc. Apparatus and method for integrated voice gateway
EP1010314B1 (en) * 1997-09-04 2004-02-11 BRITISH TELECOMMUNICATIONS public limited company Telecommunications system
US6137869A (en) * 1997-09-16 2000-10-24 Bell Atlantic Network Services, Inc. Network session management
CA2215681A1 (en) * 1997-09-16 1999-03-16 Francois Menard Apparatus and method to use a conventional telephone set to make telephone calls on a packet network
US6385202B1 (en) * 1997-10-01 2002-05-07 At&T Corp. Method and system for allowing access to traditional voice mail and interactive voice response systems over internet-like networks
JPH11122285A (en) * 1997-10-16 1999-04-30 Fujitsu Ltd Lan telephone exchange and its system
FR2771241B1 (en) 1997-11-14 2000-01-28 Alsacienne Et Lorraine De Tele telecommunication server integrated multimedia
WO1999028979A3 (en) * 1997-12-02 1999-11-25 Alcatel Usa Sourcing Lp Digital phone system
US6222829B1 (en) * 1997-12-23 2001-04-24 Telefonaktieblaget L M Ericsson Internet protocol telephony for a mobile station on a packet data channel
EP1046271A1 (en) * 1998-01-07 2000-10-25 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Internet access by telephone
JP2002504761A (en) * 1998-01-27 2002-02-12 ウィロウブルック テクノロジーズ Computer telephony integration pbx
US8130749B2 (en) * 1998-02-17 2012-03-06 Genesys Telecommunications Laboratories Inc., A Corp of California Telephone network interface bridge between data telephony networks and dedicated connection telephony networks
US9008075B2 (en) 2005-12-22 2015-04-14 Genesys Telecommunications Laboratories, Inc. System and methods for improving interaction routing performance
US7907598B2 (en) 1998-02-17 2011-03-15 Genesys Telecommunication Laboratories, Inc. Method for implementing and executing communication center routing strategies represented in extensible markup language
JP4266403B2 (en) * 1998-02-18 2009-05-20 キヤノン株式会社 Communication system and control method thereof
US7701924B1 (en) * 1998-02-27 2010-04-20 Cisco Technology, Inc. System and method for performing signaling on behalf of a stateless client
US7032242B1 (en) 1998-03-05 2006-04-18 3Com Corporation Method and system for distributed network address translation with network security features
US6353614B1 (en) 1998-03-05 2002-03-05 3Com Corporation Method and protocol for distributed network address translation
US7450560B1 (en) 1998-03-05 2008-11-11 3Com Corporation Method for address mapping in a network access system and a network access device for use therewith
DE19814439A1 (en) * 1998-03-31 1999-10-07 Siemens Ag A communication system for connecting a communication terminal to services of different communications networks
US6493325B1 (en) * 1998-05-05 2002-12-10 At&T Corp. Method and apparatus for providing telephony over a computer network
US6075784A (en) * 1998-06-08 2000-06-13 Jetstream Communications, Inc. System and method for communicating voice and data over a local packet network
JP3560813B2 (en) 1998-06-11 2004-09-02 富士通株式会社 Gateway device, the gateway device of the terminal identification method and a computer-readable recording medium recording a device specific program
US6785710B2 (en) * 1998-06-22 2004-08-31 Genesys Telecommunications Laboratories, Inc. E-mail client with programmable address attributes
US6480510B1 (en) 1998-07-28 2002-11-12 Serconet Ltd. Local area network of serial intelligent cells
US6130883A (en) * 1998-07-30 2000-10-10 Motorola, Inc. Method and apparatus for voice packet communications
US6253249B1 (en) 1998-08-31 2001-06-26 Nortel Networks Limited Method and devices for bridging data and telephone networks
US6801952B2 (en) 1998-08-31 2004-10-05 Nortel Networks Limited Method and devices for providing network services from several servers
US6393467B1 (en) 1998-08-31 2002-05-21 Nortel Networks Limited Network interconnected computing device, server and notification method
US6393122B1 (en) 1998-08-31 2002-05-21 Nortel Networks Limited Method and device for providing intermediate telephone service with enhanced network reliability
US6711611B2 (en) 1998-09-11 2004-03-23 Genesis Telecommunications Laboratories, Inc. Method and apparatus for data-linking a mobile knowledge worker to home communication-center infrastructure
USRE46387E1 (en) 1998-09-11 2017-05-02 Genesys Telecommunications Laboratories, Inc. Method and apparatus for extended management of state and interaction of a remote knowledge worker from a contact center
USRE46153E1 (en) 1998-09-11 2016-09-20 Genesys Telecommunications Laboratories, Inc. Method and apparatus enabling voice-based management of state and interaction of a remote knowledge worker in a contact center environment
US6985943B2 (en) 1998-09-11 2006-01-10 Genesys Telecommunications Laboratories, Inc. Method and apparatus for extended management of state and interaction of a remote knowledge worker from a contact center
US6332154B2 (en) 1998-09-11 2001-12-18 Genesys Telecommunications Laboratories, Inc. Method and apparatus for providing media-independent self-help modules within a multimedia communication-center customer interface
ES2142770B1 (en) * 1998-09-17 2000-12-01 Telefonica Sa integrated interface for access to the local telephone network circuit.
US6161133A (en) 1998-10-19 2000-12-12 Lexton Systems, Inc. Method and apparatus for configuration of an internet appliance
US6430176B1 (en) 1998-11-06 2002-08-06 Nortel Networks Limited Multimedia channel management through PSTN signaling
US6700901B1 (en) * 1998-11-09 2004-03-02 Siemens Information & Communication Networks, Inc. System and method for digital telephones on H.323 networks
US6442169B1 (en) 1998-11-20 2002-08-27 Level 3 Communications, Inc. System and method for bypassing data from egress facilities
US6614781B1 (en) 1998-11-20 2003-09-02 Level 3 Communications, Inc. Voice over data telecommunications network architecture
US6438222B1 (en) 1998-12-23 2002-08-20 At&T Corp. Method and system for processing a telephone call while on-line
US6532286B1 (en) 1998-12-23 2003-03-11 At&T Corp. Method and system for processing a telephone call
FI106499B (en) * 1998-12-29 2001-02-15 Nokia Networks Oy A data transmission method and network element
US6477242B1 (en) * 1999-02-23 2002-11-05 Automated Business Companies Electronic telephone client service provider system (EP/CSP)
WO2000054470A1 (en) 1999-03-12 2000-09-14 Lextron Systems, Inc. System for controlling processing of data passing through network gateways between two disparate communications networks
EP1166543A1 (en) 1999-03-19 2002-01-02 Estara, Inc. Public web phone system
US6707811B2 (en) 1999-03-19 2004-03-16 Estara, Inc. Internet telephony for ecommerce
US6731642B1 (en) 1999-05-03 2004-05-04 3Com Corporation Internet telephony using network address translation
WO2000070531A3 (en) * 1999-05-17 2001-07-12 Foxboro Co Methods and apparatus for control configuration
US7089530B1 (en) * 1999-05-17 2006-08-08 Invensys Systems, Inc. Process control configuration system with connection validation and configuration
US6788980B1 (en) * 1999-06-11 2004-09-07 Invensys Systems, Inc. Methods and apparatus for control using control devices that provide a virtual machine environment and that communicate via an IP network
US6512764B1 (en) * 1999-07-16 2003-01-28 General Bandwidth Inc. Method and apparatus for providing voice signals to and from a telecommunications switch
US7929978B2 (en) 1999-12-01 2011-04-19 Genesys Telecommunications Laboratories, Inc. Method and apparatus for providing enhanced communication capability for mobile devices on a virtual private network
US6708219B1 (en) 1999-10-26 2004-03-16 3Com Corporation Method and system for dual-network address utilization
US6781982B1 (en) 1999-10-26 2004-08-24 3Com Corporation Method and system for allocating persistent private network addresses between private networks
US6768743B1 (en) 1999-10-26 2004-07-27 3Com Corporation Method and system for address server redirection for multiple address networks
US6996621B1 (en) 1999-12-07 2006-02-07 3Com Corporation Method for supporting secondary address delivery on remote access servers
US6856614B1 (en) * 1999-12-24 2005-02-15 Lara Networks, Inc. Method for a mixed voice and data device in a home communications network
US6724750B1 (en) * 1999-12-24 2004-04-20 Lara Networks, Inc. Method for a link to a wide area network device in a home communication network
US7260078B1 (en) 2000-02-08 2007-08-21 Siemens Aktiengesellschaft Method and system for providing management protocol mediation in wireless communications networks
US6512762B1 (en) 2000-02-11 2003-01-28 General Bandwidth, Inc. System and method for communicating telecommunication information between customer premises equipment and network equipment
US6404763B1 (en) 2000-02-11 2002-06-11 General Bandwidth Inc. System and method for communicating telecommunication information between network equipment and a plurality of local loop circuits
US6466573B1 (en) 2000-02-11 2002-10-15 General Bandwidth Inc. System and method for communicating telecommunication information between a telecommunication switch and customer premises equipment
EP1128682A1 (en) * 2000-02-21 2001-08-29 Alcatel Voice-data integration architecture for PABX
US7171492B1 (en) 2000-02-24 2007-01-30 Utstarcom, Inc. Method and application programming interface for assigning multiple network addresses
US6826174B1 (en) * 2000-03-02 2004-11-30 3Com Corporation Voice-over-IP interface for standard household telephone
US7130297B1 (en) 2000-03-06 2006-10-31 Sun Peter C P Architecture for a mixed voice and data network
US6948074B1 (en) 2000-03-09 2005-09-20 3Com Corporation Method and system for distributed generation of unique random numbers for digital tokens
US6549616B1 (en) * 2000-03-20 2003-04-15 Serconet Ltd. Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
US7106721B1 (en) 2000-04-18 2006-09-12 Serconet, Ltd. Telephone communication system over a single telephone line
US6407341B1 (en) 2000-04-25 2002-06-18 International Business Machines Corporation Conductive substructures of a multilayered laminate
US7324635B2 (en) * 2000-05-04 2008-01-29 Telemaze Llc Branch calling and caller ID based call routing telephone features
DE10024079A1 (en) * 2000-05-17 2001-11-22 Asclepion Meditec Ag Determining energy and position of pulsed laser beam of ophthalmologic excimer laser for cornea surgery, deflects beam periodically onto measurement sensor
JP2002051031A (en) * 2000-08-04 2002-02-15 Nec Corp Synchronous data transmission system
US7039025B1 (en) 2000-09-29 2006-05-02 Siemens Communications, Inc. System and method for providing general packet radio services in a private wireless network
US7675900B1 (en) 2000-10-09 2010-03-09 Genband Inc. System and method for interfacing between signaling protocols
US6839342B1 (en) 2000-10-09 2005-01-04 General Bandwidth Inc. System and method for interfacing signaling information and voice traffic
US7184427B1 (en) 2000-11-28 2007-02-27 Genband Inc. System and method for communicating telecommunication information from a broadband network to a telecommunication network
US7385963B1 (en) 2000-11-28 2008-06-10 Genband Inc. System and method for communicating telecommunication information from a telecommunication network to a broadband network
US6914899B2 (en) 2001-01-30 2005-07-05 Estara, Inc. Caller identification and voice/data synchronization for internet telephony and related applications
US7075921B2 (en) 2001-01-30 2006-07-11 Estara, Inc. Remote media control for voice over internet telephony and related applications
US6950650B2 (en) 2001-02-12 2005-09-27 Siemens Ag System and method for call forwarding synchronization in a communication system
US6754221B1 (en) 2001-02-15 2004-06-22 General Bandwidth Inc. System and method for selecting a compression algorithm according to an available bandwidth
US6987755B2 (en) * 2001-03-22 2006-01-17 Siemens Communications, Inc. System and method for user notification in a communication system
US6920318B2 (en) 2001-03-22 2005-07-19 Siemens Communications, Inc. Method and system for providing message services in a communication system
US6526046B1 (en) 2001-04-24 2003-02-25 General Bandwidth Inc. System and method for communicating telecommunication information using asynchronous transfer mode
US7149182B1 (en) 2001-04-24 2006-12-12 Genband Inc. System and method for providing lifeline telecommunication service
US6879667B1 (en) 2001-05-07 2005-04-12 General Bandwidth Inc. System and method for interfacing telephony voice signals with a broadband access network
US6996134B1 (en) 2001-05-07 2006-02-07 General Bandwidth Inc. System and method for reliably communicating telecommunication information
WO2002098075A1 (en) * 2001-05-25 2002-12-05 Mitsubishi Denki Kabushiki Kaisha Internet communication system, internet communication method, session control server, communication adapter, communication relay server and program
CN100518227C (en) * 2001-07-05 2009-07-22 塞尔科尼特有限公司 Telephone outlet with packet telephony adapter, and a network using same
US8098651B1 (en) 2001-07-27 2012-01-17 Rockstar Bidco, LP Integrating multimedia capabilities with circuit-switched calls
JP2003078572A (en) 2001-09-04 2003-03-14 Nec Corp Voice gateway device
US7245583B1 (en) 2001-09-04 2007-07-17 Genband Inc. System and method for providing lifeline telecommunication service to line-powered customer premises equipment
US6917676B2 (en) 2001-09-28 2005-07-12 Hitachi, Ltd. Telephone set, repeating device and recording medium
US7170854B1 (en) 2001-10-02 2007-01-30 Genband Inc. System and method using switch fabric to support redundant network ports
US7873058B2 (en) 2004-11-08 2011-01-18 Mosaid Technologies Incorporated Outlet with analog signal adapter, a method for use thereof and a network using said outlet
EP2234394A1 (en) * 2001-10-11 2010-09-29 Mosaid Technologies Incorporated Coupling device
US7616754B2 (en) * 2001-11-09 2009-11-10 Herzel Laor Method and system for computer-based private branch exchange
US7443834B1 (en) * 2001-12-20 2008-10-28 Nortel Networks Limited Combining multimedia services with traditional telephony
US20030126291A1 (en) * 2001-12-28 2003-07-03 Wang Ben B. Method and message distributor for routing requests to a processing node
US7239628B1 (en) 2002-05-01 2007-07-03 Genband Inc. Line-powered network interface device
US6741595B2 (en) * 2002-06-11 2004-05-25 Netrake Corporation Device for enabling trap and trace of internet protocol communications
KR20040009129A (en) * 2002-07-22 2004-01-31 엘지전자 주식회사 Method for Communicating flowing IP Internet Phone
US7920546B2 (en) * 2002-10-01 2011-04-05 Nortel Networks Limited Automated attendant multimedia session
US7646761B2 (en) * 2002-10-01 2010-01-12 Nortel Networks Limited Integrating multimedia capabilities with legacy networks
EP1455496B1 (en) * 2003-03-03 2007-05-30 Siemens Aktiengesellschaft Determination of the characteristics at the transition of AAL2-signalling to another further signalling
GB0305254D0 (en) * 2003-03-07 2003-04-09 Ip Access Ltd Enhancing circuit-switched media transmission over IP access networks
US7746905B2 (en) * 2003-03-13 2010-06-29 Mosaid Technologies Incorporated Private telephone network connected to more than one public network
JP4895810B2 (en) * 2003-07-22 2012-03-14 ディーエスエム アイピー アセッツ ビー.ブイ. Purification method of riboflavin
DE10358995A1 (en) * 2003-12-15 2005-07-14 Detewe Deutsche Telephonwerke Aktiengesellschaft & Co. Kg Telecommunications system and method for its operation
US7761923B2 (en) * 2004-03-01 2010-07-20 Invensys Systems, Inc. Process control methods and apparatus for intrusion detection, protection and network hardening
US7508928B1 (en) 2004-04-30 2009-03-24 Sprint Spectrum L.P. System and method for voice-over-packet calling with PSTN backup
US8432897B2 (en) * 2005-08-29 2013-04-30 At&T Intellectual Property I, L.P. System and method of presenting caller identification information at a voice over internet protocol communication device
US8081747B2 (en) 2005-08-29 2011-12-20 At&T Intellectual Property I, Lp System and method of managing telephone calls within a voice over internet protocol telephone system
JP2006166468A (en) * 2005-12-16 2006-06-22 Sony Corp Speech terminal
US7555310B2 (en) * 2005-12-21 2009-06-30 Kyocera Mita Corporation Electronic apparatus and computer readable medium recorded voice operating program
US7860857B2 (en) 2006-03-30 2010-12-28 Invensys Systems, Inc. Digital data processing apparatus and methods for improving plant performance
US20080005266A1 (en) * 2006-06-30 2008-01-03 Gene Fein Multimedia delivery system
JP2008060937A (en) * 2006-08-31 2008-03-13 Brother Ind Ltd Multifunctional peripheral device
US20080123232A1 (en) * 2006-11-21 2008-05-29 Harris Richard A Bi-directional transient blocking unit having a dual-gate transistor
JP4501932B2 (en) * 2006-12-18 2010-07-14 ソニー株式会社 Call system, the terminal device and call METHOD
US7729344B2 (en) * 2006-12-29 2010-06-01 Genband Inc. Methods and apparatus for controlling signaling associated with a private branch exchange within a session over internet protocol network
CN102124432B (en) 2008-06-20 2014-11-26 因文西斯系统公司 Systems and methods for immersive interaction with actual and/or simulated facilities for process, environmental and industrial control
US8787362B2 (en) * 2009-04-01 2014-07-22 Qualcomm Incorporated Fall back using mobile device assisted terminating access domain selection
US8238538B2 (en) 2009-05-28 2012-08-07 Comcast Cable Communications, Llc Stateful home phone service
US8463964B2 (en) * 2009-05-29 2013-06-11 Invensys Systems, Inc. Methods and apparatus for control configuration with enhanced change-tracking
US8127060B2 (en) * 2009-05-29 2012-02-28 Invensys Systems, Inc Methods and apparatus for control configuration with control objects that are fieldbus protocol-aware
US9621706B2 (en) * 2009-11-18 2017-04-11 Qualcomm Incorporated System and method of haptic communication at a portable computing device
US8249230B1 (en) 2012-01-09 2012-08-21 EC Data Systems, Inc. Scalable and flexible internet fax architecture
US8254538B1 (en) 2012-02-27 2012-08-28 EC Data Systems, Inc. Scalable and flexible internet fax architecture for processing outbound fax messages

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723238A (en) * 1986-03-24 1988-02-02 American Telephone And Telegraph Company Interface circuit for interconnecting circuit switched and packet switched systems
US4771425A (en) * 1984-10-29 1988-09-13 Stratacom, Inc. Synchoronous packet voice/data communication system
US4942602A (en) * 1989-01-06 1990-07-17 International Business Machines Corporation Coordinated transfer of voice and information through a network of digital switches
US4995073A (en) * 1987-10-10 1991-02-19 Canon Kabushiki Kaisha Communication apparatus and communication system having automatic attribution switching
US5148429A (en) * 1988-10-27 1992-09-15 Kabushiki Kaisha Toshiba Voice data transmission system and method
US5208811A (en) * 1989-11-06 1993-05-04 Hitachi, Ltd. Interconnection system and method for heterogeneous networks
US5274635A (en) * 1992-11-18 1993-12-28 Stratacom, Inc. Method and apparatus for aligning a digital communication data stream across a cell network
US5305312A (en) * 1992-02-07 1994-04-19 At&T Bell Laboratories Apparatus for interfacing analog telephones and digital data terminals to an ISDN line
US5329572A (en) * 1992-09-24 1994-07-12 At&T Bell Laboratories Dial-up switching and transmission of broadband communication channels through a local exchange
US5341374A (en) * 1991-03-01 1994-08-23 Trilan Systems Corporation Communication network integrating voice data and video with distributed call processing
US5347516A (en) * 1991-04-14 1994-09-13 Nec Corporation System for access from LAN to ISDN with means for changing between use of packet switch and line switch without interruption of data transmission
US5367522A (en) * 1991-02-21 1994-11-22 Canon Kabushiki Kaisha Multimedia communicating apparatus
US5408524A (en) * 1993-03-29 1995-04-18 Xel Communications, Inc. Answer supervision over pulse code modulated carrier system and method therefore
US5434906A (en) * 1993-09-13 1995-07-18 Robinson; Michael J. Method and apparatus for processing an incoming call in a communication system
US5473366A (en) * 1992-11-17 1995-12-05 Canon Kabushiki Kaisha Television-telephone apparatus having a message-keeping function and an automatic response transmission function
US5533102A (en) * 1993-09-22 1996-07-02 Active Voice Telephone auto attendant system for delivering chosen greetings to callers while on the phone
US5568540A (en) * 1993-09-13 1996-10-22 Active Voice Corporation Method and apparatus for selecting and playing a voice mail message
US5583922A (en) * 1990-09-27 1996-12-10 Radish Communication Systems, Inc. Telecommunication system for automatic switching between voice and visual data communications using forms
US5602846A (en) * 1994-04-08 1997-02-11 Paradyne Corporation Simultaneous voice and data call establishment using a simultaneous voice and data modem pool and private branch exchange facilities
US5604737A (en) * 1993-12-15 1997-02-18 Hitachi, Ltd. Voice communication system and voice communication method
US5657358A (en) * 1985-03-20 1997-08-12 Interdigital Technology Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or plurality of RF channels
US5689553A (en) * 1993-04-22 1997-11-18 At&T Corp. Multimedia telecommunications network and service

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5846918B2 (en) 1979-11-27 1983-10-19 Fujitsu Ltd
JPS58215151A (en) 1982-06-07 1983-12-14 Nippon Telegr & Teleph Corp <Ntt> Connecting system between networks
JPH0325978B2 (en) 1982-07-12 1991-04-09 Tokyo Shibaura Electric Co
JPS6281847A (en) 1985-10-04 1987-04-15 Nec Corp Destination selection system
JPS62130049A (en) 1985-11-30 1987-06-12 Toshiba Corp Inter-network connection control system
JPH0276344A (en) 1988-09-12 1990-03-15 Mitsubishi Electric Corp Load decentralizing system for lan packet network connection equipment
JPH0361791A (en) 1989-07-28 1991-03-18 Nippon Bureen Kk Repairing method for pipe
JPH03107248A (en) 1989-09-20 1991-05-07 Fujitsu Ltd Isdn communication system
JPH04363947A (en) 1991-06-06 1992-12-16 Nec Home Electron Ltd Telephone set for packet line
JPH0563823A (en) 1991-09-04 1993-03-12 Nec Corp Reply selection service system
JP3244741B2 (en) 1992-01-20 2002-01-07 キヤノン株式会社 Isdn terminal equipment
JPH05244292A (en) 1992-02-26 1993-09-21 Ricoh Co Ltd Lan system

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771425A (en) * 1984-10-29 1988-09-13 Stratacom, Inc. Synchoronous packet voice/data communication system
US5657358A (en) * 1985-03-20 1997-08-12 Interdigital Technology Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or plurality of RF channels
US4723238A (en) * 1986-03-24 1988-02-02 American Telephone And Telegraph Company Interface circuit for interconnecting circuit switched and packet switched systems
US4995073A (en) * 1987-10-10 1991-02-19 Canon Kabushiki Kaisha Communication apparatus and communication system having automatic attribution switching
US5148429A (en) * 1988-10-27 1992-09-15 Kabushiki Kaisha Toshiba Voice data transmission system and method
US4942602A (en) * 1989-01-06 1990-07-17 International Business Machines Corporation Coordinated transfer of voice and information through a network of digital switches
US5208811A (en) * 1989-11-06 1993-05-04 Hitachi, Ltd. Interconnection system and method for heterogeneous networks
US5583922A (en) * 1990-09-27 1996-12-10 Radish Communication Systems, Inc. Telecommunication system for automatic switching between voice and visual data communications using forms
US5367522A (en) * 1991-02-21 1994-11-22 Canon Kabushiki Kaisha Multimedia communicating apparatus
US5341374A (en) * 1991-03-01 1994-08-23 Trilan Systems Corporation Communication network integrating voice data and video with distributed call processing
US5347516A (en) * 1991-04-14 1994-09-13 Nec Corporation System for access from LAN to ISDN with means for changing between use of packet switch and line switch without interruption of data transmission
US5305312A (en) * 1992-02-07 1994-04-19 At&T Bell Laboratories Apparatus for interfacing analog telephones and digital data terminals to an ISDN line
US5329572A (en) * 1992-09-24 1994-07-12 At&T Bell Laboratories Dial-up switching and transmission of broadband communication channels through a local exchange
US5473366A (en) * 1992-11-17 1995-12-05 Canon Kabushiki Kaisha Television-telephone apparatus having a message-keeping function and an automatic response transmission function
US5274635A (en) * 1992-11-18 1993-12-28 Stratacom, Inc. Method and apparatus for aligning a digital communication data stream across a cell network
US5408524A (en) * 1993-03-29 1995-04-18 Xel Communications, Inc. Answer supervision over pulse code modulated carrier system and method therefore
US5689553A (en) * 1993-04-22 1997-11-18 At&T Corp. Multimedia telecommunications network and service
US5568540A (en) * 1993-09-13 1996-10-22 Active Voice Corporation Method and apparatus for selecting and playing a voice mail message
US5434906A (en) * 1993-09-13 1995-07-18 Robinson; Michael J. Method and apparatus for processing an incoming call in a communication system
US5533102A (en) * 1993-09-22 1996-07-02 Active Voice Telephone auto attendant system for delivering chosen greetings to callers while on the phone
US5604737A (en) * 1993-12-15 1997-02-18 Hitachi, Ltd. Voice communication system and voice communication method
US6240085B1 (en) * 1993-12-15 2001-05-29 Hitachi, Ltd. Voice communication system and voice communication method
US20010043593A1 (en) * 1993-12-15 2001-11-22 Hitachi, Ltd. Voice communication system and voice communication method
US5602846A (en) * 1994-04-08 1997-02-11 Paradyne Corporation Simultaneous voice and data call establishment using a simultaneous voice and data modem pool and private branch exchange facilities

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040165573A1 (en) * 1995-10-05 2004-08-26 Kubler Joseph J. Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

Also Published As

Publication number Publication date Type
US20070171897A1 (en) 2007-07-26 application
US7502363B2 (en) 2009-03-10 grant
US7167467B2 (en) 2007-01-23 grant
US20080049726A1 (en) 2008-02-28 application
US5604737A (en) 1997-02-18 grant
US7756117B2 (en) 2010-07-13 grant
US7724729B2 (en) 2010-05-25 grant
US20060098636A1 (en) 2006-05-11 application
US20080049729A1 (en) 2008-02-28 application
US20080049730A1 (en) 2008-02-28 application
US6240085B1 (en) 2001-05-29 grant
US7808976B2 (en) 2010-10-05 grant
JPH07170288A (en) 1995-07-04 application
US20010043593A1 (en) 2001-11-22 application
US20080049727A1 (en) 2008-02-28 application
US20080049728A1 (en) 2008-02-28 application
US7920550B2 (en) 2011-04-05 grant
US7738447B2 (en) 2010-06-15 grant
US7724730B2 (en) 2010-05-25 grant

Similar Documents

Publication Publication Date Title
US6430174B1 (en) Communication system supporting simultaneous voice and multimedia communications and method of operation therefore
US7330542B2 (en) Method and system for establishing a multimedia connection by negotiating capability in an outband control channel
US6798872B1 (en) Caller information display system and recording medium
US6014687A (en) System for audio communication between two terminals connected to the internet network
US6185288B1 (en) Multimedia call signalling system and method
US6161134A (en) Method, apparatus and communications system for companion information and network appliances
US6188677B1 (en) Telephone apparatus used for computer network telephone system
US6473423B1 (en) Method and system for interactive communication between two telephone sets via the internet
US20060063517A1 (en) Intelligent system for identifying visitor and providing communication service using mobile terminal and method thereof
US6320857B1 (en) Telephone doubler arrangement
US6389119B1 (en) Dual-circuit telephony
US20040024892A1 (en) System for providing sequenced communications within a group
US20020172339A1 (en) Method for providing sequenced communications within a group
US20020078151A1 (en) System for communicating messages of various formats between diverse communication devices
US6434528B1 (en) Computer network telephony
US20020114439A1 (en) User transparent internet telephony device and method
US7092380B1 (en) Method and system for providing voice communication over data networks
US5999594A (en) Control of transmission of electronic mail in voice message form
US20040097188A1 (en) Communication terminal device, communication method and electronic mail server
US20050047423A1 (en) Protocol interworking framework
EP0781016A2 (en) Telephone apparatus used for computer network telephone system
US7385992B1 (en) Internet caller-ID integration
US6724869B2 (en) Multimodal telephone numbers
US6643291B1 (en) Multimedia information communication system
US20070153776A1 (en) Method and apparatus for routing internet telephone calls based upon the media types and formats or CODEC capabilities of the end points or destinations