JP2008005185A - Communications system, communication method and communication processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communications device, a communication method and a communication processing program which do not require substantially the functional enhancement of extension telephone sets, capable of mutually transmitting and receiving speech signals by extension telephone call connection, including a master unit by which speech communication connection is made to the outside line, such as a public telephone line, and to make speech communication possible, using an outside line whose telecommunication standard differs from the outside line and extension, without starting terminal units. <P>SOLUTION: The control unit of a slave set 5 applicable to an internet phone service controls a radio transceiver circuit so as to transmit and receive communication speech signals, by making extension telephone call connection with a master unit 1 and a slave set 3-k by the same communication standards as those of the extension. Meanwhile, the control unit of the slave set transmits and receives communication speech signals via a network interface, by making the connection via the internet to an internet phone service communication line differing in communication standards, such as a protocol, a connection method, a coding method of speech signals, compared to a public telephone line X and the extension. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present application relates to a technical field of a communication apparatus, a communication method, and a communication processing program capable of making a call connection to a second external line having a communication standard different from that of a first external line to which a base unit included in a telephone system is connected.

  2. Description of the Related Art Conventionally, an IP telephone service (including an Internet telephone service) that enables a telephone call via a network such as the Internet or an IP (Internet Protocol) telephone network is known.

  In addition, for example, a terminal device (for example, a personal computer) that can be connected to the Internet or the like and a telephone that can be connected to a general public line such as a PSTN (Public Switched Telephone Networks) line, for example, a USB (Universal Serial Bus) By connecting with a cable or the like and controlling the terminal device from the telephone, in addition to a call via a general public line, a call with another terminal device or a general subscriber phone via the Internet (hereinafter referred to as the Internet) There has been proposed a telephone system that can also be called a telephone or the like (for example, Patent Document 1).

  As an example of such a telephone system, a predetermined application program is installed in a terminal device, and various commands are sent from the control source telephone to the terminal device using an interface such as an API (Application Program Interface) provided in the program. (For example, setting of a voice output device or input device, a request for a list of callable parties, a call connection request, a disconnection request, a dial operation command, etc.) By executing the program, a call line with a desired destination (another terminal device, a general subscriber phone, etc.) is connected, and the terminal device receives an audio signal received from the call partner's terminal device, etc. through the call line. The voice signal transmitted from the telephone is transmitted to the controlling telephone. A system adapted to transmit to the terminal device or the like of the other party through the telephone communication line has been known.

As a typical example of this application program (or telephone service), for example, Skype (registered trademark) is known, and it is possible to make an Internet telephone without performing complicated setting work. It is spreading rapidly due to the fact that the call is free and the quality of the call voice is good.
JP 2005-175722 A

  However, in the conventional system as described above, the terminal device must be activated in order to make an Internet call or the like. Therefore, it is necessary to always turn on the terminal device, and when making a call using the Internet phone, etc., operations such as turning on the terminal device are necessary. There was a problem.

  In addition, it is very convenient if a telephone system such as a cordless parent / child phone for home use that can be connected to a general public line can be used to make an Internet phone call using, for example, Skype (registered trademark). In order to enable the Internet telephone or the like without being activated, the telephone main body must be equipped with a function for executing communication control, and the telephone system itself becomes expensive. Then, there arises a problem that the telephone system is unacceptable to consumers who do not need an Internet telephone or the like.

  The present application has been made in view of the above points, and an example of the problem includes a master unit that is connected to an external line such as a public telephone line, for example. Calls can be made using an external line with a communication standard different from the above external line and internal line, for example, connected via the Internet or the like, without significantly expanding the functions of the telephone and enabling the terminal device. An object is to provide a communication device, a communication method, and a communication processing program that can be used.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a plurality of telephones capable of transmitting / receiving voice signals by connecting to each other by extension calls and connected to a first external line. A communication device in a telephone system comprising a telephone and a communication device separate from each telephone, wherein each telephone is connected to an extension call according to the same communication standard as that of the extension, and audio signals are transmitted / received. And the first external line and the extension are different from each other on the basis of connection request information indicating a call connection request received from another apparatus. An external line communication means for transmitting and receiving voice signals by connecting to the second external line without passing through a terminal device connected to the second external line, and an audio signal received from the telephone connected to the internal line Outside line Communication control means for transmitting to the second external line by a communication means, and for transmitting a voice signal received from the second external line to the telephone connected to the internal call by the extension communication means. And

  According to an eighth aspect of the present invention, there is provided a plurality of telephones capable of transmitting and receiving voice signals by connecting to each other by extension calls, and including a master unit connected to the first external line, An extension communication means for transmitting and receiving voice signals by connecting an extension call to each of the telephones according to the same communication standard as the extension, and the communication A terminal device that is separate from the device and is connected to a second external line having a communication standard different from the first external line and the internal line based on connection request information indicating a call connection request received from another device. In a communication method by a communication device comprising: an external line communication means for transmitting and receiving voice signals by connecting to the second external line without going through a terminal device, the voice received from the telephone connected to the internal line And transmitting the voice signal received from the second external line to the telephone connected to the extension call by the extension communication means. And

  According to the ninth aspect of the present invention, there is provided a plurality of telephones capable of transmitting and receiving voice signals by connecting to each other by extension calls, and including a master unit connected by telephone connection to a first external line; An extension communication means for transmitting and receiving voice signals by connecting a computer included in the communication device in a telephone system constituted by a separate communication device to each telephone by an extension call according to the same communication standard as the extension, A terminal device that is separate from the communication device and is connected to a second external line having a communication standard different from the first external line and the internal line based on connection request information indicating a call connection request received from another device. The external line communication means for transmitting and receiving voice signals by connecting to the second external line without passing through the terminal device, and the external line communication means for receiving the audio signal received from the telephone connected to the internal line call Serial to transmit to the second outside line, and is characterized in that to function voice signal received from said second outside line as a communication control unit, to transmit to the internal call a telephone connected by the extension communication means.

  Next, the best mode for carrying out the present application will be described with reference to the drawings. In the embodiment described below, the present application is applied to a telephone system capable of both a call via the Internet and a call via a general public line (for example, a subscriber telephone line such as a PSTN line). This is an embodiment of the case.

[1. Overview of Internet telephone service system]
First, an Internet telephone service system that enables calls over the Internet in the embodiment (the system here is a system for an Internet telephone service provider or the like to provide the telephone service to a user) An outline will be described.

  The Internet telephone service system according to the present embodiment installs various application software such as a personal computer and a PDA (Personal Digital Assistant) (non-volatile such as a hard disk and a flash memory inside the apparatus so that the application software can be executed) To install the application program for a predetermined Internet telephone in a terminal device that can be used for various purposes such as data communication, etc., and start the application program Thus, a call with another terminal device or the like can be made via the Internet. As an overall system of this Internet telephone service system, for example, a peer-to-peer system in which a telephone line is connected through a plurality of terminal devices, or a telephone line to a terminal device that is a destination of communication by a predetermined server device In any case, the Internet protocol is used as the communication protocol.

  In order to use this Internet telephone service system, the user of the terminal device has to register himself / herself in the system. Therefore, for example, the user starts a Web browser program installed in the terminal device, and connects to a predetermined server device managed by an Internet telephone service provider or the like via the Internet, and the user name (user name), By inputting a password, an e-mail address, etc., these pieces of information are transmitted from the terminal device to the server device, and are registered and managed in the server device. Thereafter, the user starts an application program for Internet telephone, inputs a user name, a password, etc., and performs a login operation so that the user can be recognized by the Internet telephone service system and the system can be used. Become. Then, when the user designates the other party who wants to talk by the user name, connection processing is executed between the user terminal device and the other party terminal device (and a predetermined server device or other terminal device), and the telephone line Is connected, the audio signal corresponding to the utterance voice input from the microphone or the like connected to each terminal device is transmitted, and the audio corresponding to the received audio signal is connected to each terminal device. Output from the speaker.

  Further, this application program can be controlled through API from a device such as a telephone connected to another program or a terminal device. For example, a predetermined command (as a type of command) Send, for example, call voice output device and input device settings, a request for a list of callees, a call connection request (an example of connection request information), a disconnection request, a dial operation command, etc. Based on the command, the terminal device executes the application program for Internet telephone, so that the user can make a call over the Internet using a control source telephone or the like.

  In addition, in the Internet telephone service system according to the embodiment, a telephone call with a general subscriber telephone, a cellular phone or the like is possible via the Internet. Specifically, for example, a communication line is connected via the Internet, a gateway server, and a general public line by relaying communication between the Internet and the general public line in a predetermined gateway server. It is.

  Furthermore, in this Internet telephone service system, simultaneous calls with a plurality of other parties (so-called three-party calls), transmission / reception of data files with the terminal device of the other party, etc. are also possible.

  The Internet telephone service system according to the embodiment is a system that basically assumes that a predetermined application program is installed and used in a terminal device. However, the telephone system according to the embodiment does not include the terminal device. Internet telephone service system can be used.

  For example, Skype (registered trademark) can be applied as the Internet telephone service system (or application program for Internet telephone) according to the embodiment, but is not limited thereto.

[2. Overview of telephone system configuration and functions]
Next, the configuration of the telephone system according to the embodiment will be described with reference to FIG.

  FIG. 1 is a block diagram showing a schematic configuration of a telephone system S according to the embodiment.

  As shown in FIG. 1, the telephone system S according to the embodiment is connected to a general public line X (an example of a first external line) by telephone, and an extension connection is established by performing wireless communication with the main unit 1. , A plurality of slave units 3-k (k = 1, 2,..., N) connected to the general public line X via the master unit 1 and an Internet (not shown) to connect to the Internet telephone line ( Internet phone compatible handset 5 as an example of a communication device connected to the second external line), a destination IP address described in the header portion of a data packet transmitted from the Internet phone compatible handset 5 or modem 7, etc. Is transmitted from the router 6 to perform data transmission / reception through the general public line X and the router 6 that determines the transfer route based on An ADSL (Asymmetric Digital Subscriber Line) modem or the like that modulates a digital signal into an analog signal and transmits the analog signal to the general public line X, and demodulates the analog signal transmitted from the general public line X into a digital signal and transmits the digital signal to the router 6 The voice signal transmitted from the modem 7 and the base unit 1 and the data signal transmitted from the modem 7 are multiplexed and transmitted to the general public line X, and the signal transmitted from the general public line X is divided by the frequency band. A splitter 8 transmits a voice signal in a voice frequency band to the base unit 1 and a data signal in a high frequency band to the modem 7.

  Here, the base unit 1 and the plurality of handset units 3-k constitute a cordless telephone basic system, and the telephone connection to the general public line X can be made only by the cordless telephone basic system.

  The Internet phone compatible handset 5 is a device for expanding the functions of the above cordless telephone basic system, and is connected to the Internet through a general public line X and an ISP (Internet Service Provider) (not shown) and connected to the Internet. By connecting a telephone line with the terminal device or the like, a telephone call using the Internet telephone service system by the master unit 1 or the slave unit 3-k is enabled.

  The base unit 1, the handset 3 and the Internet phone compatible handset 5 are capable of making a call by connecting to each other by wireless communication. Further, the handset 3 and the Internet phone compatible handset 5 can be connected to the general public line X via the base unit 1 and can make a call with a subscriber phone, a mobile phone, etc. (not shown). Yes. Further, the master unit 1 and the slave unit 3 are capable of making a call using the Internet telephone service system via the slave unit 5 for Internet telephone.

  Here, in the telephone system S, a call using the general public line X and a call using the Internet telephone service system can be performed simultaneously and independently. For example, it is possible to make a call using the Internet telephone service system in the handset 5 compatible with the Internet phone at the same time as making a call using the general public line X in the base unit 1, While the handset 3-1 makes a call using the general public line X, the handset 3-2 can make a call using the Internet telephone service system.

  Further, the master unit 1, the slave unit 3 and the Internet phone-compatible slave unit 5 can perform a three-party call in which a call using the general public line X and a call using the Internet phone service system are simultaneously performed. ing.

  Furthermore, the incoming call from the general public line X is transferred to the terminal device indicated by the user name in the preset Internet telephone service system via the Internet, while the incoming call from the Internet is transferred to the preset telephone number. It is possible to perform incoming call transfer (so-called transfer telephone) that is transferred via the general public line X to the telephone indicated by.

  Furthermore, a terminal device is connected to the Internet phone compatible handset 5 and connected to the other party's terminal device etc. and the Internet phone compatible handset 5 during a call using the Internet phone service system. The data file can be transmitted / received to / from the terminal device.

  In addition, by connecting a terminal device to the router 6, the terminal device can connect to the Internet through the general public line X and perform data communication such as transmission / reception of e-mails, browsing of Web pages, downloading of data files, and the like. However, in the present embodiment, the terminal device is not an essential configuration.

[3. Configuration of main unit]
Next, the configuration of base unit 1 will be described with reference to FIG.

  FIG. 2 is a block diagram illustrating a schematic configuration of the base unit 1 according to the embodiment.

  As shown in FIG. 2, the base unit 1 includes a detection circuit 11 that detects incoming signals and call voice signals input from the general public line X to the external line connection terminals L1 and L2, and the base unit 1 and the general public line X. Control circuit 12 for controlling the call connection of the telephone, a call circuit 13 for transmitting / receiving a call voice signal to / from the general public line X via the line control circuit 12, a DSP 14 for performing voice processing of the call voice signal, and a slave unit For example, an encoding process or an encryption process for performing wireless communication with the 3-k or the mobile phone 5 compatible with the Internet telephone by the FHSS-WDCT (Frequency Hopping Spread Spectrum-Worldwide Digital Cordless Telephone) system or the like is performed. An antenna 16 for wirelessly transmitting and receiving signals between the wireless transmission / reception circuit 15 and the slave unit 3-k or the Internet phone compatible slave unit 5, and a display unit 17 for displaying characters, symbols, etc. For example, a liquid crystal display), a key operation unit 18 including operation buttons, a ring circuit 19 for detecting an incoming signal input from the general public line X to the external line connection terminals L1 and L2, and a call voice signal. A speaker 20, a microphone 21 for collecting speech, a storage unit 22 (for example, a flash memory) for storing various data and programs, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read And a control unit 23 having only memory) or the like.

  The storage unit 22 stores data such as telephone directory data, incoming call transfer status information, and transfer destination information. In the telephone book data, for example, the telephone number of the other party for dialing transmission via the general public line X is registered in association with the name information indicating the other party, and transmitted via the Internet. The user name of the other party for registration is registered in association with name information indicating the other party. The incoming call transfer status information is information indicating whether or not the incoming call transfer described above is performed (whether or not the incoming call from the general public line X or the Internet is transferred). The forwarding destination information is a telephone number or a user name of the forwarding destination when performing incoming call forwarding. These pieces of information are transmitted / received by wireless communication between the child device 3-k and the Internet phone compatible child device 5, and the same content information is stored in the child device 3-k and the Internet phone compatible child device 5 as well. It has become.

  And the control part 23 carries out the overall control of the main | base station 1 by reading and executing the various programs memorize | stored in ROM or the memory | storage part 22. FIG.

[4. Configuration and function of slave unit]
Next, the structure of the subunit | mobile_unit 3-k is demonstrated using FIG.

  FIG. 3 is a block diagram showing a schematic configuration of the slave unit 3-k according to the embodiment.

  As shown in FIG. 3, the slave unit 3-k includes an antenna 31 for wirelessly transmitting and receiving signals to and from the master unit 1 and other slave units 3-k and the Internet phone compatible slave unit 5, A wireless transmission / reception circuit 32 that performs encoding processing and encryption processing for performing wireless communication by the FHSS-WDCT method, a DSP 33 that performs speech processing of a speech signal, and a display unit 34 that displays characters, symbols, and the like For example, a liquid crystal display or the like), a key operation unit 35 including operation buttons and the like, a speaker 36 that amplifies a call voice signal, a microphone 37 that collects speech sound, and a storage unit 38 that stores various data, programs, and the like. (For example, a flash memory) and a control unit 39 including a CPU, a RAM, a ROM, and the like.

  The storage unit 38 stores phone book data and the like, similar to the base unit 1.

  Then, the control unit 39 reads and executes various programs stored in the ROM or the storage unit 38, thereby performing overall control of the entire child device 3-k.

[5. Configuration and function of slave unit compatible with Internet phone]
Next, the configuration of the Internet phone compatible handset 5 will be described with reference to FIG.

  FIG. 4 is a block diagram showing a schematic configuration of the Internet phone compatible handset 5 according to the embodiment.

  As shown in FIG. 4, the Internet phone compatible handset 5 includes an antenna 51 for wirelessly transmitting and receiving signals to and from the base unit 1 and the handset 3-k, and wireless communication using, for example, the FHSS-WDCT method. A wireless transmission / reception circuit 52 that performs encoding processing, encryption processing, and the like, a DSP 53 that performs voice processing of a call voice signal, a display unit 54 (for example, a liquid crystal display) that displays characters, symbols, and the like, Stores a key operation unit 55 including operation buttons, a speaker 56 as an example of an output unit that amplifies a call voice signal, a microphone 57 as an example of an input unit that collects a voice, and various data and programs. A storage interface 58 (for example, a flash memory) that connects to the router 4 and a network interface that performs interface processing between the router 4 and the controller 61 A USB interface 60 that connects to a host device 59 (for example, an Ethernet (registered trademark) adapter) and a terminal device (not shown) and performs interface processing between the terminal device and the control unit 61; a CPU, a RAM, and a ROM; Etc., and a control unit 61 provided with the above.

  Here, the wireless transmission / reception circuit 52 and the control unit 61 constitute an example of an extension communication unit, the network interface 59 and the control unit 61 constitute an example of an external communication unit, and the control unit 61 constitutes an example of a communication control unit. .

  The storage unit 58 stores telephone directory data, incoming call transfer status information, transfer destination information, and the like, similar to the base unit 1.

  The storage unit 58 stores a user name and password for logging in to the Internet telephone service system.

  Further, the storage unit 59 stores an Internet telephone application program, a control program for controlling the application program through an API, and the like.

  The control unit 61 reads out and executes various programs stored in the ROM or the storage unit 58, thereby controlling the entire Internet phone-compatible slave unit 5 as an extension communication unit, an external communication unit, and a communication control unit. It is supposed to function.

  When the power supply of the Internet phone compatible handset 5 is turned on, the control unit 61 starts an application program for Internet phone and uses the user name and password stored in the storage unit 58 to connect to the Internet via the network interface 59. The login process for the telephone service system is executed.

  Further, by connecting the terminal device and the USB interface 60 with a USB cable or the like, any call can be made during a call over the Internet (the main unit 1, the sub unit 3-k, or the Internet phone compatible sub unit 5). ), Data files can be transmitted and received between the terminal device and the other party's terminal device or the like in communication via the Internet telephone compatible handset 5.

  Note that the program stored in the storage unit 58 may be downloaded from a predetermined server device via the Internet, or may be supplied from a terminal device or the like via the USB interface 60.

[6. Phone system operation]
Next, the operation of the telephone system S will be described with reference to FIGS.

(6-1. Extension calls)
First, an operation when an extension call is performed between the child device 3-k and the parent device 1 will be described.

  When the user performs a dial operation using the key operation unit 35 of the child device 3-k and inputs an extension number that designates the parent device 1, the extension number is displayed on the display unit 54 of the child device 3-k. Then, a call signal indicating an extension call (an extension number input as information indicating a telephone of a call destination is set) and a caller extension number (indicating a slave unit 3-k) are transmitted from the control unit 39 to the radio transmission / reception circuit 32. A caller notification signal indicating an extension number) is supplied. These signals are subjected to encoding processing and the like in the radio transmission / reception circuit 32 and transmitted by the antenna 31.

  When the call signal and the caller notification signal are received by the antenna 16 of the base unit 1, the radio transmission / reception circuit 15 performs demodulation processing and the like, and supplies the demodulated signal to the control unit 23.

  When the control unit 23 recognizes that the extension number included in the call signal designates the master unit 1, the caller extension number indicated by the caller notification signal is displayed on the display unit 34. Then, a sound signal of a ring tone is supplied from the control unit 23 to the DSP 14, converted into an analog signal by the DSP 14, amplified, and the like, and the ring tone is amplified by the speaker 20.

  Here, when another user performs an off-hook operation using the key operation unit 18 of the base unit 1, a response signal is supplied from the control unit 23 to the wireless transmission / reception circuit, and an encoding process or the like is performed in the wireless transmission / reception circuit. And transmitted by the antenna 16.

  When a response signal is received by the antenna 31 of the slave unit 3-k, demodulation processing or the like is performed in the wireless transmission / reception circuit 32 and supplied to the control unit 39. Then, extension connection processing (negotiation) is executed between the slave unit 3-k and the master unit 1, and the telephone line is connected.

  Thereafter, the user's utterance voice input via the microphone 37 of the slave unit 3-k is converted into a digital voice call voice signal by the DSP 33, and is subjected to encoding processing by the radio transmission / reception circuit 32, and the antenna 31. Sent by.

  When a call voice signal is received by the antenna 16 of the base unit 1, demodulation processing or the like is performed in the wireless transmission / reception circuit 15, converted into an analog signal or amplified in the DSP 14, and the user's utterance voice or the like is amplified in the speaker 20. Is done.

  On the other hand, the voice of another user input via the microphone 20 of the base unit 1 is converted into a digital speech voice signal by the DSP 14, encoded by the wireless transmission / reception circuit 15, and transmitted by the antenna 16. Sent.

  When a call voice signal is received by the antenna 31 of the slave unit 3-k, the wireless transmission / reception circuit 32 performs demodulation processing and the like, and the DSP 33 converts and amplifies the signal into an analog signal. Speech speech etc. are amplified.

  The operations of extension calls between the slave units 3-k, the master unit 1 and the Internet phone compatible slave unit 5, and the slave units 3-k and the Internet phone compatible slave unit 5 are the same as those described above. Description of is omitted.

(6-2. Call using general public line X)
Next, a case where a call is made by making a call via the general public line X and a case where a call is made after an incoming call will be described using an example of making a call using the handset 3-k.

  First, a description will be given of a case where a call is made by calling through the general public line X.

  When the user performs a dial operation using the key operation unit 35 of the child device 3-k and inputs the telephone number of the called party, the phone number is displayed on the display unit 34 and the control unit 39 of the child device 3-k. The call signal indicating the transmission of the general public line (the extension number assigned to the base unit 1 is set as information indicating the call destination telephone) and the call destination notification signal indicating the call destination telephone number are transmitted and received by the radio transmission / reception circuit 32. The wireless transmission / reception circuit 32 subjects these signals to encoding processing and the like, and transmits them through the antenna 31.

  When the calling signal and the destination notification signal are received by the antenna 16 of the base unit 1, demodulation processing or the like is performed in the wireless transmission / reception circuit 15 and supplied to the control unit 23. Then, a control signal is supplied from the control unit 23 to the line control circuit 12 based on the call signal and the call destination notification signal, and the line with the call destination designated by the telephone number indicated by the call destination notification signal in the line control circuit 12 Connection processing is executed.

  When a call line with the call destination is connected, a connection completion signal is supplied from the line control circuit 12 to the control unit 23, and a call response notification signal is supplied from the control unit 23 to the wireless transmission / reception circuit 15. Then, a call response notification signal is supplied to the control unit 39 of the slave unit 3-k via the wireless transmission / reception circuit 15, the antenna 16, the antenna 31, and the wireless transmission / reception circuit 32, and the control signal is supplied from the control unit 39 to the DSP 33. As a result, the DSP 33 starts sound processing for the sound input from the microphone 37.

  Thereafter, the user's utterance voice input via the microphone 37 is converted into a digital call voice signal by the DSP 33, encoded by the wireless transmission / reception circuit 15, and transmitted by the antenna 31.

  When a call voice signal is received by the antenna 16 of the base unit 1, demodulation processing or the like is performed in the radio transmission / reception circuit 15, via the call circuit 13, the line control circuit 12, and the detection circuit 11 (and the splitter 8). To the general public line X.

  On the other hand, call voice signals input to the L1 and L2 from the general public line X are supplied to the DSP 14 via the detection circuit 11, the line control circuit 12, and the call circuit 13. Then, the call voice signal is subjected to predetermined voice processing in the DSP 14, further subjected to encoding processing and the like in the radio transmission / reception circuit 15, and transmitted by the antenna 16.

  When a call voice signal is received by the antenna 31 of the slave unit 3-k, demodulation processing or the like is performed in the radio transmission / reception circuit 32, converted into an analog signal or amplified in the DSP 33, and the called party in the speaker 36 The utterance voice of etc. is amplified.

  Next, a case where a call is received from the general public line X will be described.

  When an incoming signal is input from the general public line X to L1 and L2, the detection circuit 11 detects the incoming signal, and the ring circuit 19 detects the incoming signal. Is also supplied to the control unit 23.

  Then, when a general call signal and a caller notification signal indicating the caller's telephone number are supplied from the control unit 23 to the wireless transmission / reception circuit 15, the wireless transmission / reception circuit 15, the antenna 16, the antenna 31, and the wireless transmission / reception circuit 32 are used. These signals are supplied to the control unit 39 of the slave unit 3-k, the telephone number of the caller is displayed on the display unit 34, and the voice signal of the ringing tone is supplied from the control unit 39 to the DSP 33. Is converted into an analog signal, amplified, and the like, and the ringtone is loudened by the speaker 36 (note that the ringtone is also loudened by the other handset 3-k and the handset 5 compatible with the Internet telephone).

  Here, when the user performs an off-hook operation using the key operation unit 35 of the child device 3-k, the control unit 39 causes the parent device to pass through the wireless transmission / reception circuit 32, the antenna 31, the antenna 16, and the wireless transmission / reception circuit 15. The response signal is supplied to the first control unit 23. Then, a control signal is supplied from the control unit 23 to the line connection circuit 12 so that a communication line with the general public line X is connected.

  Thereafter, in the same manner as described above, voice communication signals are transmitted / received among the general public line X, the parent device 1 and the responding child device 3-k.

  The operation when making a call using the general public line X of the Internet phone compatible handset 5 is the same as that of the handset 3-k. In the case of the base unit 1, the extension connection by wireless communication is not performed. In addition, the voice corresponding to the call voice signal received from the general public line X is amplified by the speaker 20, and the call voice signal corresponding to the voice collected by the microphone 21 is transmitted to the general public line X. Since the operation is basically the same as described above, the description of these examples is omitted.

(6-3. Calls using the Internet telephone service system)
Next, a case where a call is made by calling through the Internet using the Internet phone service system and a case where a call is made after receiving a call will be described using an example of making a call using the slave unit 3-k.

  FIG. 5 is a flowchart showing an example of processing when the telephone system S according to the embodiment makes a call by calling the Internet. FIG. 6 is a flowchart showing an example of processing when the telephone system S according to the embodiment receives a call from the Internet and makes a call.

  First, a case where a call is made by calling through the Internet will be described.

  As shown in FIG. 5, when the user designates a user of the Internet telephone service system registered in the phone book data stored in the storage unit 38 by using the key operation unit 35 of the child device 3-k (step S1). The user name of the designated user is displayed on the display unit 54 of the slave unit 3-k (step S2), and a call signal indicating the Internet transmission is sent from the control unit 39 to the wireless transmission / reception circuit 32 (call destination telephone). The extension number assigned to the Internet phone compatible handset 5 is set as the information indicating the communication destination) and the call destination notification signal indicating the user name of the call destination is supplied. These signals are subjected to encoding processing and the like in the radio transmission / reception circuit 32 and transmitted by the antenna 31 (steps S3 and S4).

  When the calling signal and the destination notification signal are received by the antenna 51 of the Internet telephone compatible handset 5, the wireless transmission / reception circuit 52 performs demodulation processing and the like, and supplies them to the control unit 61 (steps S11 and S12).

  When the control unit 61 transmits a transmission signal for the user name indicated by the transmission destination notification signal to the Internet via the network interface 59 (and the router 6, the modem 7, the splitter 8, and the general public line X) ( Step S13), a line connection process is executed between the Internet telephone compatible handset 5 and a predetermined server device or terminal device.

  Then, when a call line with a called terminal device or the like is connected, a call response notification signal is supplied from the network interface 59 to the control unit 61. Accordingly, when it is determined by the control unit 61 that the callee has responded (step S14: YES), the wireless transmission / reception circuit 52, the antenna 51, the antenna 31 of the slave unit 3-k, and the wireless transmission / reception circuit 32 are transmitted from the control unit 61. When the call response notification signal is supplied to the control unit 39 of the slave unit 3-k and the call destination determines that the call destination has responded (step S5: YES), the control signal is sent from the control unit 39 to the DSP 33. Is supplied to the DSP 33, voice processing for the voice input from the microphone 37 is started, and call processing is performed by the handset 3-k and the handset 5 corresponding to the Internet telephone (steps S6 and S16). .

  Specifically, the user's utterance voice input via the microphone 37 of the slave unit 3-k is converted into a digital speech voice signal by the DSP 33, and encoded by the radio transmission / reception circuit 32. Transmitted by the antenna 31.

  When a call voice signal is received by the antenna 51 of the Internet phone compatible handset 5, the radio transmission / reception circuit 52 performs demodulation processing and the like, and the control unit 61 performs voice processing and the like via the network interface 59. Sent to the Internet.

  On the other hand, the audio signal supplied from the Internet to the control unit 61 via the network interface 59 of the Internet phone compatible handset 5 is subjected to audio processing or the like in the control unit 61 and further subjected to encoding processing or the like in the wireless transmission / reception circuit 52. Applied and transmitted by the antenna 51.

  When a call voice signal is received by the antenna 31 of the slave unit 3-k, demodulation processing or the like is performed in the radio transmission / reception circuit 32, converted into an analog signal or amplified in the DSP 33, and the called party in the speaker 36 The utterance voice of etc. is amplified.

  In this way, while the disconnection of the call line is not detected (step S7: NO, step S17: NO), the above-described call processing is executed, and an on-hook operation is performed in the slave unit 3-k, or the call destination If the disconnection of the communication line is detected by performing an on-hook operation or the like in the terminal device or the like (step S7: YES, step S17: YES), the process is terminated.

  Next, a case where a call is received from the Internet will be described.

  As shown in FIG. 6, when an incoming call signal is input from the Internet to the control unit 61 via the network interface 59 of the Internet phone compatible handset 5 (step S31), the calling user name is displayed on the display unit 54. At the same time, the control unit 61 supplies an incoming call sound signal to the DSP 53, and the DSP 53 converts the signal into an analog signal, amplifies the signal, etc., and the speaker 56 amplifies the incoming call sound.

  Then, when a simultaneous call signal and a caller notification signal indicating the user name of the caller are supplied from the control unit 61 to the wireless transmission / reception circuit 52 (steps S32 and S33), the wireless transmission / reception circuit 52, the antenna 51, the antenna 31, and the wireless These signals are supplied to the control unit 39 of the slave unit 3-k via the transmission / reception circuit 32 (step S21, step S22), and the name of the caller is displayed on the display unit 34 (step S23). An audio signal of a ring tone is supplied from the control unit 39 to the DSP 33, converted into an analog signal by the DSP 33, amplified, and the like, and the ring tone is amplified by the speaker 36 (note that the base unit 1 and other handset 3 -k The ringtone is also louder).

  Here, when the user performs an off-hook operation using the key operation unit 35 of the child device 3-k, it is determined that a response operation has been performed in the control unit 39 (step S24: YES), and the control unit 39 performs wireless communication. A response signal is supplied to the control unit 61 of the slave unit 5 for Internet telephone via the transmission / reception circuit 32, the antenna 31, the antenna 51, and the wireless transmission / reception circuit 52 (step S25). Thereby, if it is determined in the control unit 61 that the slave unit 3-k has responded (S34: YES), when the call response signal is transmitted to the Internet via the network interface 59 in the control unit 61, the caller A telephone line with a terminal device or the like is connected.

  Thereafter, the telephone call processing and the like are executed in the same manner as described above (steps S26, S27, S35, and S36).

  The operation when making a call using the Internet telephone service system of the parent device 1 is the same as that of the child device 3-k. In the case of the child device 5 compatible with the Internet phone, the extension connection by wireless communication is not performed. In addition, the voice corresponding to the call voice signal received from the Internet is amplified by the speaker 56 and the call voice signal corresponding to the voice collected by the microphone 57 is transmitted to the Internet. Since it is the same as the operation, the description of these examples is omitted.

(6-4.3 call)
Next, a case where a three-party call is performed in which a call via the general public line X and a call via the Internet are performed at the same time will be described using an example of a call using the child device 3-k.

  First, a case where a three-way call is performed by simultaneously executing a call via the Internet during a call via a general public line will be described.

  FIG. 7 is a flowchart illustrating an example of processing in the case of performing a three-party call in the telephone system S according to the embodiment.

  As shown in FIG. 7, by the operation described in 6-2 above, a call process for the general public line X is executed in the slave unit 3-k via the master unit (step S41).

  Here, when the user performs a call holding operation and an operation for designating a user of the Internet telephone service system using the key operation unit 35 of the child device 3-k (step S42), the display unit 34 of the child device 3-k. The user name of the designated user is displayed on the screen (step S43), and the calling signal indicating the Internet transmission via the wireless transmission / reception circuit 32, the antenna 51 and the wireless transmission / reception circuit 52 and the user name of the called party are displayed from the control unit 39. Is sent to the control unit 61 of the Internet phone compatible handset 5 (steps S44, S45, S51, S52).

  When the control unit 23 transmits a transmission signal for the user name indicated by the transmission destination notification signal to the Internet via the network interface 59 (step S53), the Internet telephone compatible handset 5 and a predetermined server device or terminal Line connection processing is executed with the device or the like.

  Then, when a call line with a called terminal device or the like is connected, a call response notification signal is supplied from the network interface 59 to the control unit 61. As a result, when it is determined by the control unit 61 that the call destination has responded (step S54: YES), the call response notification signal is transmitted from the control unit 61 via the wireless transmission / reception circuit 52, the antenna 51, the antenna 31, and the wireless transmission / reception circuit 32. Is supplied to the control unit 39 of the child device 3-k (step S55), and when the control unit 39 determines that the call destination is answered (step S46: YES), the call as described in 6-3 above Processing is executed (steps S47 and S56).

  When the user performs a hold release operation using the key operation unit 35 of the child device 3-k (step S48), the three-party call processing by the parent device 1, the child device 3-k, and the Internet phone compatible child device 5 is performed. Is executed (steps S49 and S57).

  Specifically, the user's utterance voice input via the microphone 37 of the slave unit 3-k is converted into a digital speech voice signal by the DSP 33, and encoded by the radio transmission / reception circuit 32. Transmitted by the antenna 31.

  When a call voice signal is received by the antenna 51 of the Internet phone compatible handset 5, the radio transmission / reception circuit 52 performs demodulation processing and the like, and the control unit 61 performs voice processing and the like via the network interface 59. Sent to the internet.

  The call voice signal transmitted from the slave unit 3-k is also received by the antenna 16 of the master unit 1, and subjected to demodulation processing and the like in the radio transmission / reception circuit 15, and the call circuit 13, the line control circuit 12, and the detection circuit 11 are transmitted. To the general public line X.

  Also, call voice signals input from the general public line X to L1 and L2 of the base unit 1 are supplied to the DSP 14 via the detection circuit 11, the line control circuit 12, and the call circuit 13. Then, the call voice signal is subjected to predetermined voice processing in the DSP 14, further subjected to encoding processing and the like in the radio transmission / reception circuit 15, and transmitted by the antenna 16.

  On the other hand, the audio signal supplied from the Internet to the control unit 61 via the network interface 59 of the Internet phone compatible handset 5 is subjected to audio processing or the like in the control unit 61 and further subjected to encoding processing or the like in the wireless transmission / reception circuit 52. Applied and transmitted by the antenna 51.

  When the call voice signal transmitted from the parent device 1 and the call voice signal transmitted from the Internet phone compatible child device 5 are received by the antenna 31 of the child device 3-k, wireless transmission / reception is performed for each signal. Demodulation processing and the like are performed in the circuit 32, converted into an analog signal in the DSP 33, amplified, etc., and the speaker 36 makes a call via the voice of the other party who is calling via the general public line X and the Internet. The other party's speech is expanded.

  In this way, while the disconnection of the call line is not detected (step S50: NO, step S58: NO), the above-described three-party call process is executed, and when the disconnection of the call line is detected (step S50: YES) Step S58: YES), the process ends.

  Next, a case where a three-party call is performed by simultaneously executing a call via a general public line during a call via the Internet will be described.

  Through the operation described in 6-3 above, the telephone set for the Internet is executed in the slave unit 3-k via the slave unit 5 for Internet telephone.

  Here, when the user performs a call holding operation and an operation of inputting a telephone number using the key operation unit 35 of the slave unit 3-k, the input telephone number is displayed on the display unit 34 of the slave unit 3-k. In addition to the display, a call signal indicating general public line transmission and a call destination notification signal indicating a call destination telephone number are transmitted from the control unit 39 via the radio transmission / reception circuit 32, the antenna 31, the antenna 16, and the radio transmission / reception circuit 15. 1 to the control unit 23.

  Next, a control signal is supplied from the control unit 23 to the line control circuit 12 based on the call signal and the call destination notification signal, and the line with the call destination designated by the telephone number indicated by the call destination notification signal in the line control circuit 12. Connection processing is executed.

  When a call line with the call destination is connected, a connection completion signal is supplied from the line control circuit 12 to the control unit 23, and a call response notification signal is supplied from the control unit 23 to the wireless transmission / reception circuit 15. Then, a call response notification signal is supplied to the control unit 39 of the slave unit 3-k via the wireless transmission / reception circuit 15, the antenna 16, the antenna 31, and the wireless transmission / reception circuit 32, and the control signal is supplied from the control unit 39 to the DSP 33. As a result, the call processing as described in 6-2 above is executed.

  Then, when the user performs a hold release operation using the key operation unit 35 of the child device 3-k, thereafter, the three-party call processing or the like is performed in the same manner as in the operations of steps S49, S50, S57, and S58. Executed.

  Note that the case where a three-way call is performed by the parent device 1 and the Internet phone-compatible child device 5 is basically the same as the above-described operation, and thus description thereof will be omitted.

(6-5. Forwarding phone)
Next, a case where an incoming call from the general public line X is transferred to the Internet will be described.

  FIG. 8 is a flowchart illustrating an example of processing in the case of performing incoming call transfer in the telephone system S according to the embodiment.

  It is assumed that the incoming call transfer state information stored in the storage unit 38 of the parent device 1 is set to have incoming call transfer, and the user name in the Internet telephone service system is set to the transfer destination information.

  When an incoming signal is input to the L1 and L2 from the general public line X (step S61), the incoming signal is detected by the detection circuit 11, detected by the ring circuit 19, and supplied to the control unit 23.

  Then, when the control unit 23 determines that there is an incoming call transfer and acquires the transfer destination user name, the control unit 23 transmits the Internet via the wireless transmission / reception circuit 15, the antenna 16, the antenna 51, and the wireless transmission / reception circuit 52. A call signal indicating transmission and a call destination notification signal indicating the user name of the call destination are supplied to the control unit 61 of the Internet phone compatible handset 5 (steps S62, S63, S71, S72).

  Next, when a transmission signal for the user name indicated by the transmission destination notification signal is transmitted to the Internet via the network interface 59 in the control unit 61 (step S73), the Internet telephone compatible handset 5 and a predetermined server device or terminal Line connection processing is executed with the device or the like.

  Then, when a call line with a called terminal device or the like is connected, a call response notification signal is supplied from the network interface 59 to the control unit 61. Thereby, when it is determined by the control unit 61 that the call destination has responded (step S74: YES), the call response notification signal is transmitted from the control unit 61 via the wireless transmission / reception circuit 52, the antenna 51, the antenna 16, and the wireless transmission / reception circuit 15. Is supplied to the control unit 23 of the base unit 1, it is determined that the callee has responded in the control unit 23 (step S <b> 64: YES).

  Thereafter, the call voice signal input to the L1 and L2 from the general public line X is transferred to the Internet via the base unit 1 and the Internet phone compatible handset 5, and the call voice signal supplied from the Internet to the network interface 59 is Then, it is transferred to the general public line X via the Internet phone compatible handset 5 and the base unit 1 (steps S65 and S76). More specifically, the base unit 1 executes the same processing as the above-described call processing 6-2 (the extension connection partner is the Internet phone compatible handset 5). -3 is executed (the extension partner is the master unit 1).

  In this way, while the disconnection of the call line is not detected (step S66: NO, step S77: NO), the transfer process described above is executed, and when the disconnection of the call line is detected (step S66: YES, step S77: YES), the process ends.

  Next, a case where an incoming call from the Internet is transferred to the general public line X will be described.

  It is assumed that the incoming call transfer status information stored in the storage unit 58 of the Internet phone compatible handset 5 is set to have incoming call transfer, and the transfer destination information is set to a telephone number.

  When an incoming signal is input from the Internet to the control unit 61 via the network interface 59, the control unit 61 determines that there is an incoming call transfer and acquires the transfer destination telephone number. Via the transmission / reception circuit 52, the antenna 51, the antenna 16, and the wireless transmission / reception circuit 15, a call signal indicating Internet transmission and a transmission destination notification signal indicating a telephone number of the call destination are supplied to the control unit 23 of the base unit 1.

  Then, a control signal is supplied from the control unit 23 to the line control circuit 12 based on the call signal and the call destination notification signal, and the line with the call destination designated by the telephone number indicated by the call destination notification signal in the line control circuit 12 Connection processing is executed.

  When a call line with the call destination is connected, a connection completion signal is supplied from the line control circuit 12 to the control unit 23, and a call response notification signal is supplied from the control unit 23 to the wireless transmission / reception circuit 15. Then, the call response notification signal is supplied to the control unit 61 of the Internet phone compatible handset 5 through the wireless transmission / reception circuit 15, the antenna 51 of the antenna 16, and the wireless transmission / reception circuit 52.

  Thereafter, transfer processing and the like are executed in the same manner as described above.

  As described above, according to the present embodiment, the master unit 1 and the plurality of slave units 3-k connected to the general public line X are connected to each other by extension communication by wireless communication to transmit and receive call voice signals. Thus, the extension call can be made, and the control unit 61 of the Internet phone compatible handset 5 controls the radio transmission / reception circuit 62 to perform the parent communication with the same communication standard (for example, FHSS-WDCT compliant) as the extension. The telephone call signal is transmitted / received by connecting the extension call to the machine 1 and the slave unit 3-k, while the general public line X and the extension are connected via the network interface 59 to the protocol, the connection method, the encoding of the voice signal, and the like. A voice signal is transmitted and received by connecting to a telephone line of an Internet telephone service system having a different communication standard via the Internet. Then, the control unit 61 of the slave unit 5 corresponding to the Internet telephone calls the communication line connected via the Internet with the call voice signal received from the telephone of either the master unit 1 or the slave unit 3-k connected to the extension call. And the voice signal received from the communication line is transmitted to the telephone connected to the extension.

  Therefore, if an extension call is possible as the cordless telephone basic system (master unit 1 and slave unit 3-k), the function of the cordless telephone basic system is greatly expanded by adding the slave unit 5 for Internet telephone. Calls using the Internet telephone service system can be made without any problems.

  Specifically, when making a call by making a call to the Internet, when the base unit 1 and the handset 3-k make an extension call to the handset 5 that supports the Internet telephone, instead of notifying the extension number of the caller It is possible to make a call using the Internet telephone service system by notifying the user name in the Internet telephone service system, and when receiving a call from the Internet and making a call, the operation is the same as a response to a normal extension call. It is possible to make a call (if necessary, the user name of the call destination and the user name of the call source may be displayed).

  In addition, the function of connecting to the telephone line of the Internet telephone service system is installed in the Internet telephone compatible handset 5, and the API provided by the application program to the terminal device in which the application program for Internet telephone is installed. The terminal device is not necessary because it is not necessary to transmit the command using such as to control the terminal device to connect to the telephone line.

  The Internet phone compatible handset 5 corresponds to a call voice signal received from a call line connected via the Internet, or a call voice signal received from the extension connected base unit 1 or the slave unit 3-k. The voice is amplified by the speaker 56, and a call voice signal corresponding to the voice collected by the microphone 57 is transmitted to the main unit 1 or the sub unit 3-k connected to the call line or the extension line. It is possible to make a call via the Internet, an extension call, and a call via the general public line X using the corresponding slave unit 5.

  Further, the Internet phone compatible handset 5 is connected to the base unit 1 by extension, and the base unit 1 transmits the call voice signal received from the general public line X to the Internet phone compatible handset 5, and the call voice signal is transmitted to the Internet. The base unit 1 generally transmits a call voice signal transmitted to the base unit 1 transmitted from the telephone line by the telephone unit 6 to the telephone line connected via the Internet. Since it is transmitted to the public line X, it becomes possible to perform incoming call transfer (forwarding call) between the general public line X and a telephone line connected via the Internet. Calls are also possible.

  Furthermore, the base unit 1 amplifies the voice corresponding to the call voice signal received from the general public line X and the call voice signal received from the Internet telephone compatible handset 5 through the speaker 20 and is collected by the microphone 21. Since the call voice signal corresponding to the voice is transmitted to the general public line X and the Internet phone compatible handset 5, the three-way call by the base unit 1 is also possible.

  Further, the slave unit 3-k amplifies the voice corresponding to the call voice signal received from the extension-connected master unit 1 and the voice corresponding to the call voice signal received from the Internet phone compatible slave unit 5 through the speaker 36, and the microphone. Since the call voice signal corresponding to the voice collected by 37 is transmitted to the base unit 1 and the Internet phone compatible handset 5, a three-way call by the handset 3-k is also possible.

  Furthermore, by connecting a terminal device to the USB of the Internet phone compatible handset 5, it is possible to transmit and receive data files to and from the partner terminal device that is making a call via the Internet.

  In the embodiment described above, the Internet phone compatible handset 5 itself has a call function, but it does not necessarily have to have a call function.

  Further, instead of connecting the Internet phone compatible handset 5 and the router 6 by wire, data may be transmitted and received wirelessly (for example, IEEE802.11 or IEEE802.15).

  Further, the Internet phone compatible handset 5 and the modem 7 may be directly connected.

  Further, the extension connection in the telephone system S is not based on wireless communication but may be connected by wire.

  In addition, the master unit 1 or the slave unit 3-k is provided with a USB interface or the like, a terminal device is connected to the USB interface, and data is transmitted between the terminal device and a partner terminal device that is in a call via the Internet. You may comprise so that a file may be transmitted / received.

  In the above embodiment, the general public line X is applied to the first external line, and the telephone line connected using the Internet telephone service system is applied to the second external line. Alternatively, the present application may be applied by changing the whole to a telephone line or the like corresponding to another communication standard.

It is a block diagram which shows schematic structure of the telephone system S which concerns on embodiment. It is a block diagram which shows the schematic structure of the main | base station 1 which concerns on embodiment. It is a block diagram which shows schematic structure of the subunit | mobile_unit 3-k which concerns on embodiment. It is a block diagram which shows the general | schematic structure of the internet telephone corresponding subunit | mobile_unit 5 which concerns on embodiment. It is a flowchart which shows the process example in the case of calling and calling to the internet of the telephone system S which concerns on embodiment. It is a flowchart which shows the process example in the case of receiving a call from the internet of the telephone system S which concerns on embodiment, and talking. It is a flowchart which shows the process example in the case of performing the three-party call of the telephone system S which concerns on embodiment. It is a flowchart which shows the process example in the case of performing the incoming call transfer of the telephone system S which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Master unit 3-k Slave unit 5 Slave unit corresponding to Internet telephone 6 Router 7 Modem 8 Splitter 11 Detection circuit 12 Line control circuit 13 Communication circuit 14, 33, 53 DSP
15, 32, 52 Radio transmission / reception circuit 16, 31, 51 Antenna 17, 34, 54 Display unit 18, 35, 55 Key operation unit 20, 36, 56 Speaker 21, 37, 57 Microphone 22, 38, 58 Storage unit 23, 39, 61 Control unit 59 Network interface 60 USB interface X General public line S Telephone system

Claims (9)

A plurality of telephones capable of transmitting and receiving audio signals by connecting to each other by extension calls, and including a telephone set including a master unit connected to the first external line by telephone, and a communication device separate from each telephone set. The communication device in the telephone system,
Extension communication means for transmitting and receiving voice signals by connecting an extension call to each telephone according to the same communication standard as the extension,
A terminal device that is separate from the communication device and is connected to a second external line having a communication standard different from the first external line and the internal line based on connection request information indicating a call connection request received from another device An external line communication means for transmitting and receiving voice signals by connecting to the second external line without going through a terminal device to be connected;
A voice signal received from the telephone connected to the extension call is transmitted to the second outside line by the outside line communication means, and a voice signal received from the second outside line is connected to the extension call by the extension line communication means. Communication control means for transmitting to the telephone set,
A communication apparatus comprising: The communication device according to claim 1,
Output means for outputting voice corresponding to the voice signal received from the second external line;
An input means for inputting a user's utterance voice;
The communication control unit causes the external line communication unit to transmit an audio signal corresponding to the input audio to the second external line. The communication device according to claim 2,
The output means outputs a voice corresponding to a voice signal received from the telephone connected to the extension call;
The communication control means causes a voice signal corresponding to the inputted voice to be transmitted to the telephone connected to the extension call by the extension communication means. The communication device according to any one of claims 1 to 3,
The extension communication means connects an extension call to a master unit connected to the first outside line,
The master unit transmits a voice signal received from the first external line to the extension communication unit, and transmits a voice signal received from the extension communication unit to the first external line. Communication device. The communication device according to claim 4, wherein
The master unit outputs a voice corresponding to the voice signal received from the extension communication means while outputting a voice corresponding to the voice signal received from the first external line, and a speech voice input by the user The voice signal corresponding to the input speech voice while transmitting the voice signal including the voice signal corresponding to the voice signal received from the extension communication means to the first external line, and the first An audio signal including an audio signal received from an external line of the communication line is transmitted to the extension communication means. The communication device according to any one of claims 1 to 5,
The extension communication means connects an extension call to a slave that is the telephone excluding the master,
The master unit transmits a voice signal received from the first external line to the slave unit connected to the extension call, and transmits a voice signal received from the slave unit to the first external line,
The slave unit outputs voice corresponding to the voice signal received from the extension communication means while outputting voice corresponding to the voice signal received from the master unit, and corresponds to the speech voice input by the user. Voice signals corresponding to the inputted speech voice and received from the master unit while transmitting voice signals including the voice signal to be received and the voice signal received from the extension communication means to the master unit An audio signal including an audio signal is transmitted to the extension communication means. The communication apparatus according to any one of claims 1 to 6,
The extension is a telephone line connected by radio,
The first outside line is a public telephone line;
The communication apparatus according to claim 2, wherein the second external line is a telephone line connected using an Internet protocol. A plurality of telephones capable of transmitting and receiving audio signals by connecting to each other by extension calls, and including a telephone set including a master unit connected to the first external line by telephone, and a communication device separate from each telephone set. The communication device in the telephone system is an extension communication means for transmitting / receiving voice signals by connecting an extension call to each telephone according to the same communication standard as the extension, and the communication device is a separate terminal device. Thus, based on connection request information indicating a call connection request received from another device, the first external line and the internal line can be connected to the second external line having a communication standard different from that of the first external line. And a communication method using a communication device comprising an external communication means for transmitting and receiving voice signals by connecting to a telephone line of 2 external lines,
A voice signal received from the telephone connected to the extension call is transmitted to the second outside line by the outside line communication means, and a voice signal received from the second outside line is connected to the extension call by the extension line communication means. A communication method comprising the step of transmitting to a telephone set. A plurality of telephones capable of transmitting and receiving audio signals by connecting to each other by extension calls, and including a telephone set including a master unit connected to the first external line by telephone, and a communication device separate from each telephone set. A computer included in the communication device in the telephone system
Extension communication means for transmitting and receiving voice signals by connecting to an extension call according to the same communication standard as the extension to each of the telephones,
A terminal device that is separate from the communication device and is connected to a second external line having a communication standard different from the first external line and the internal line based on connection request information indicating a call connection request received from another device Outside line communication means for transmitting and receiving voice signals by connecting to the second outside line through a call without using a terminal device to be connected;
A voice signal received from the telephone connected to the extension call is transmitted to the second outside line by the outside line communication means, and a voice signal received from the second outside line is connected to the extension call by the extension line communication means. Communication control means for transmitting to a telephone set,
A communication processing program characterized by causing it to function as:

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