JP2000049936A - Telephone exchange, communication system, communication control method and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the telephone system, the communication system, the communication control method and the storage medium where a line whose speech quality is not warranted such as the Internet is used for a relay line, various on-line services during speech are received, an automatic answering telephone set is remotely controlled and a data signal such as a DTMF signal or a MODEM signal is surely sent/received between terminals. SOLUTION: The system has a line control section 102 that controls an analog telephone line, a digital line control section 103 that controls a digital telephone line, a protocol control section 104 that controls the Internet line, a DTMF reception section 105, and a CPU 111 that sets other line to assure speech quality between telephone exchanges when a data signal is received from a telephone set in the case that the line whose speech quality such as the Internet is not warranted is used between the telephone exchanges so as to execute transmission reception of the data signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange, a communication system, a communication control method, and a storage medium, and more particularly, to a plurality of telephone terminals connected to a telephone line network. A telephone exchange device and communication suitable for telephone communication via a telephone line network, and especially for telephone communication using a telephone line whose call quality is not guaranteed for an intermediate line such as an internet relay telephone using the Internet as a relay line. The present invention relates to a system, a communication control method, and a storage medium.

[0002]

2. Description of the Related Art In Japan, Nippon Telegraph and Telephone Public Corporation once provided an exclusive service for communication using a telephone line, but after privatization in 1985, NCC (Shinden Electric) companies also became a long-distance company. We began to provide telephone service. This caused price competition for long-distance calling charges. On the other hand, as the use of e-mail and various information services has expanded, the Internet has rapidly spread. Along with this, an Internet telephone service for talking over the Internet and an Internet relay telephone service that uses the Internet by bypassing a line provided by a telephone call operator in the case of a long-distance call have also started.

[0003] On the Internet, since data is packetized and transmitted, voice data is also CODEC (C
(Oder DEcoder: a device for digitally encoding and decoding an audio signal or a video signal), and is transmitted after being packetized. However, if the digitized data is packetized and transmitted as it is, delays occur, the order of arrival at the receiving side changes, and in some cases, packets are lost, and the receiving side loses voice or loses phrases. There is a problem that the image is not restored normally and becomes unnatural.

[0004] Therefore, when transmitting voice, digitized data is compressed and transmitted, and is expanded and reproduced on the receiving side. Since the data transmission time can be shortened by compressing the data, the delay time can be reduced even if the receiving side assembles the arrival packets in order, and the data can be reproduced in a nearly natural form.

[0005]

However, the above-mentioned prior art has the following problems. In other words, it is possible to hear human speech as a conversation even if it is compressed or expanded, but DTMF (Dual To
ne Multi Frequency: A method of dialing by combining sounds of two audio frequencies) When a specific data signal sound such as a signal or a modem signal is compressed or expanded, it is detected as a data signal even if it is reproduced on the receiving side. There is a problem that it becomes impossible to play or play. The present invention has been made in view of the above points, and receives various online services or remotely controls an answering machine or the like during a call using a line such as the Internet, whose call quality is not guaranteed, as a trunk line. A telephone exchange device capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals;
It is an object to provide a communication system, a communication control method, and a storage medium.

[0006]

In order to achieve the above object, the present invention according to claim 1 is a telephone exchange apparatus capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange apparatus. And detecting means for detecting a data signal arriving via the communication line, and communication control means for transmitting the data signal to another communication line when the data signal is detected. I do.

To achieve the above object, the present invention according to claim 2 provides a first communication line for communication with a terminal device or another telephone exchange device and a second communication line for communication with another telephone exchange device. A telephone exchange device capable of accommodating second and third communication lines,
Detecting means for detecting a data signal arriving via the first communication line, and transmitting the data signal to the third communication line between the another telephone exchange device when the data signal is detected; Communication control means for performing the communication.

[0008] To achieve the above object, the present invention according to claim 3 is a compression means for compressing an audio signal received from the first communication line with the terminal device, and a compressed audio signal. Packetizing means for packetizing
The communication control means sends the packetized voice signal to the second communication line with the another telephone exchange.

In order to achieve the above object, according to the present invention, a first communication line for communication with a terminal device or another telephone exchange device and a second communication line for communication with another telephone exchange device are provided. A telephone exchange device capable of accommodating second and third communication lines,
Detecting means for detecting a data signal arriving via the third communication line from the another telephone exchange device communicating via the second communication line; and detecting the data signal when the data signal is detected. And communication control means for sending out to the first communication line with the terminal device.

In order to achieve the above object, the present invention according to claim 5 has assembling means for assembling a packetized audio signal, and expanding means for expanding the assembled signal into an audio signal. The communication control means receives a packetized voice signal from the second communication line with the another telephone exchange device, outputs the packetized voice signal to the assembling means, and outputs the voice signal expanded by the expansion means to the The data is transmitted to the first communication line with the terminal device.

According to a sixth aspect of the present invention, the communication line is an analog telephone line, a digital telephone line, an Internet line, a dedicated line, a private network line, or the like. I do.

In order to achieve the above object, the present invention according to claim 7 is characterized in that the terminal device is a telephone, a computer or the like.

To achieve the above object, the present invention according to claim 8 is characterized in that the data signal is a DTMF signal, a modem signal or the like.

In order to achieve the above object, the present invention according to claim 9 has at least two telephone exchanges and a terminal, wherein the first telephone exchange comprises a first terminal and a second terminal. The communication device is configured to be able to communicate with the telephone
Is a communication system configured to be able to communicate with a second terminal device and a first telephone exchange device, and capable of transmitting and receiving a voice signal between the first and second terminal devices,
The first telephone switching device includes first detection means for detecting a data signal arriving from the first terminal device, and, if a data signal is detected, transmitting the data signal to the second terminal via a communication line. First communication control means for transmitting the data signal to the telephone exchange device, and the second telephone exchange device detects a data signal coming from the first telephone exchange device via the communication line. And a second communication control means for transmitting a data signal to the second terminal device when a data signal is detected.

In order to achieve the above object, the present invention as set forth in claim 10, wherein the first telephone exchange comprises a compression means for compressing a voice signal received from the first terminal,
Packetizing means for packetizing the compressed voice signal, wherein the first communication control means sends the packetized voice signal to the second telephone exchange via another communication line The second telephone exchange device has assembling means for assembling a packetized voice signal, and decompression means for decompressing the assembled signal into a voice signal, and wherein the second communication control means A packetized voice signal is received from the first telephone exchange via another communication line and output to the assembling means, and the voice signal expanded by the expansion means is transmitted to the second terminal device. It is characterized by doing.

In order to achieve the above object, the present invention according to claim 11, wherein the communication line is an analog telephone line,
It is a digital telephone line, Internet line, dedicated line, private network line, etc.

According to a twelfth aspect of the present invention, the terminal device is a telephone, a computer, or the like.

In order to achieve the above object, the present invention according to claim 13 is characterized in that the data signal is a DTMF signal, a modem signal or the like.

In order to achieve the above object, according to the present invention, there is provided a communication control apparatus applied to a telephone exchange apparatus capable of accommodating a plurality of communication lines for communication with a terminal apparatus and another telephone exchange apparatus. A method, comprising: a detection step of detecting a data signal arriving via the communication line; and a communication control step of transmitting the data signal to another communication line when the data signal is detected. And

In order to achieve the above object, according to the present invention, a first communication line for communication with a terminal device or another telephone exchange device and a first communication line for communication with another telephone exchange device are provided. 2
And a communication control method applied to a telephone exchange device capable of accommodating a third communication line, comprising: a detection step of detecting a data signal arriving via the first communication line; A communication control step of transmitting the data signal to the third communication line with the another telephone exchange.

In order to achieve the above object, according to the present invention, a compression step of compressing an audio signal received from the first communication line with the terminal device, A packetizing step of packetizing the voice signal, wherein in the communication control step, the packetized voice signal is transmitted to the second communication line between the other telephone exchange device. .

In order to achieve the above object, according to the present invention, a first communication line for communication with a terminal device or another telephone exchange device and a second communication line for communication with another telephone exchange device are provided. 2
And a communication control method applied to a telephone exchange device capable of accommodating a third communication line, wherein the third communication line is communicated from the other telephone exchange device communicating via the second communication line. Detecting a data signal arriving via the communication device, and, if a data signal is detected, transmitting the data signal to the first communication line with the terminal device. And

To achieve the above object, the present invention according to claim 18 has an assembling step of assembling a packetized audio signal, and an expanding step of expanding the assembled signal into an audio signal. In the communication control step, a packetized voice signal is received from the second communication line with the other telephone exchange device and output to the assembling step, and the voice signal expanded in the decompression step is converted to the voice signal. The data is transmitted to the first communication line with the terminal device.

To achieve the above object, the present invention according to claim 19 has at least two telephone exchanges and a terminal, wherein the first telephone exchange comprises a first terminal and a second terminal. The second telephone exchange is configured to be communicable with the telephone exchange, and the second telephone exchange is configured to be communicable with the second terminal and the first telephone exchange, and voice communication is provided between the first and second terminals. A communication control method applied to a communication system capable of transmitting and receiving signals, wherein the first telephone switching device detects a data signal coming from the first terminal device; A first communication control step of transmitting the data signal to the second telephone exchange device via a communication line when a signal is detected, wherein the second telephone exchange device Via the first telephone exchange A second detecting step of detecting the data signal arrives, if the data signal is detected and having a second communication control step of transmitting said data signal to said second terminal device.

In order to achieve the above object, according to the present invention, the first telephone switching device may further comprise a compression step of compressing a voice signal received from the first terminal device; A packetizing step of packetizing a voice signal, wherein in the first communication control step, the packetized voice signal is transmitted to the second telephone switching device via another communication line, The second telephone exchange device has an assembling step of assembling a packetized voice signal, and an expanding step of expanding the assembled signal into an audio signal. In the second communication control step,
A packetized voice signal is received from the first telephone exchange via the another communication line and output to the assembling step, and the voice signal decompressed in the decompression step is transmitted to the second terminal device. It is transmitted.

In order to achieve the above object, according to the present invention, the communication line may be an analog telephone line,
It is a digital telephone line, Internet line, dedicated line, private network line, etc.

In order to achieve the above object, the present invention according to claim 22 is characterized in that the terminal device is a telephone, a computer or the like.

In order to achieve the above object, the present invention according to claim 23 is characterized in that the data signal is a DTMF signal, a modem signal or the like.

[0029] To achieve the above object, the present invention according to claim 24 is a communication control apparatus applied to a telephone exchange apparatus capable of accommodating a plurality of communication lines for communication with a terminal apparatus and another telephone exchange apparatus. A computer-readable storage medium storing a program for executing the method, the communication control method comprising: a detection step of detecting a data signal arriving via the communication line; and Communication control step of transmitting the data signal to another communication line.

In order to achieve the above object, according to the present invention, a first communication line for communication with a terminal device or another telephone exchange device and a second communication line for communication with another telephone exchange device are provided. 2
And a computer-readable storage medium storing a program for executing a communication control method applied to a telephone exchange device capable of accommodating a third communication line, wherein the communication control method includes the first communication line. And a communication control step of sending the data signal to the third communication line with the another telephone exchange when the data signal is detected. It is characterized by having.

In order to achieve the above object, according to the present invention, a first communication line for communication with a terminal device or another telephone exchange device and a second communication line for communication with another telephone exchange device are provided. 2
And a computer-readable storage medium storing a program for executing a communication control method applied to a telephone exchange device capable of accommodating a third communication line, wherein the communication control method includes the second communication line. Detecting a data signal arriving via the third communication line from the other telephone exchange device communicating via the third communication line, and, if a data signal is detected, transmitting the data signal to the terminal device. And a communication control step of transmitting to the first communication line.

To achieve the above object, the present invention according to claim 27 has at least two telephone exchanges and a terminal, wherein the first telephone exchange has a first terminal and a second terminal. The second telephone exchange is configured to be communicable with the telephone exchange, and the second telephone exchange is configured to be communicable with the second terminal and the first telephone exchange, and voice communication is provided between the first and second terminals. A computer-readable storage medium storing a program for executing a communication control method applied to a communication system capable of transmitting and receiving signals, wherein the communication control method is such that the first telephone exchange device has the first telephone exchange device. A first detection step of detecting a data signal arriving from the terminal device, and a first communication control for transmitting the data signal to the second telephone exchange device via a communication line when the data signal is detected. Step, a second detection step in which the second telephone exchange detects a data signal coming from the first telephone exchange via the communication line, and a data signal if a data signal is detected. And a second communication control step of transmitting to the second terminal device.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a telephone exchange according to an embodiment of the present invention. The telephone exchange according to the embodiment of the present invention includes a telephone exchange main body 101.
The line control unit 102 and the digital line control unit 10
3, protocol control unit 104, DTMF receiving unit 105,
DTMF transmitting section 106, voice compressing section 107, packetizing section 108, voice expanding section 109, packet assembling section 110,
Main control unit (CPU) 111, ROM 112, RAM 11
3 is provided. Although only one analog telephone line, digital telephone line, and Internet line are shown in FIG. 1 for convenience, it is assumed that a plurality of lines can be accommodated.

The functions of the above-described units will be described in detail. The telephone exchange apparatus main body 101 accommodates a digital telephone line and an Internet line. The line control unit 102 of the telephone exchange apparatus main body 101 includes a CODEC for converting a voice signal between analog and digital, and controls an analog telephone line. The digital line controller 103 controls a digital telephone line. The protocol control unit 104 controls an Internet line. DTMF receiving section 105 detects a DTMF signal from a telephone line. DTMF transmission unit 106
Sends a DTMF signal to the telephone line. Audio compression unit 1
07 compresses a digital audio signal from the telephone line.

The packetizer 108 converts the compressed audio signal into a packet signal for transmission to the Internet. The audio expansion unit 109 expands a compressed audio signal from the Internet line. Packet assembler 11
0 assembles a packetized audio signal from the Internet. A main control unit (CPU) 111 controls the entire telephone exchange apparatus, and will be described later with reference to FIGS.
The processing shown in the flowchart of FIG. ROM 112
A program for controlling the CPU 111 and various data are written in the. The RAM 113 includes a CPU 111
Stores various data necessary for control.

FIG. 2 is a schematic diagram showing a schematic configuration of a communication mode according to the embodiment of the present invention. In the communication mode according to the embodiment of the present invention, the first telephone exchange device 201 and the second telephone exchange device 202 are connected to the Internet 205 and the PSTN.
(Public Switched Telephone
Network: public telephone line) 206, and PSTN 206 has telephones 203, 2
04 is connected. It should be noted that FIG. 2 shows an example of the number of telephone exchange devices and telephones, and is not limited to the illustrated configuration.

The function of each part described above will be described together with the operation.
First telephone exchange 201, second telephone exchange 202
Are the line controller 102, the digital line controller 103, the protocol controller 104, the DTMF receiver 105, the DTMF transmitter 106, the audio compressor 107 shown in FIG.
A packetizing unit 108, a voice expanding unit 109, a packet assembling unit 110, a main control unit (CPU) 111, a ROM 112,
Each has a RAM 113.

When a call is made from the telephone 203 to the telephone 204, the telephone line is captured and the telephone number "2"
If you dial "04", the public telephone line (PSTN) 20
6 and the telephone 204
, The telephone can be communicated between the telephone 203 and the telephone 204.

On the other hand, when making a call via the Internet 205, the telephone line is captured by the telephone 203, and the telephone number “201” of the first telephone exchange 201 is dialed. When the first telephone exchange 201 detects an incoming call from the PSTN 206, it automatically answers and sends voice guidance to the line. In accordance with the voice guidance from the first telephone exchange 201, the calling telephone 203 transmits the telephone number "204" of the telephone 204 of the other party as a DTMF signal.

The first telephone exchange 201 having received the DTMF signal from the telephone 203 determines the telephone exchange to be a communication partner as the second telephone exchange 202 based on the received number, and the second telephone exchange 202 A destination telephone number “204” is transmitted to 202 via the Internet 205. The second telephone exchange 202, which has received the telephone number "204" of the called party, seizes the telephone line and dials "20" of the called party.
4 ". The telephone 2 receives the call from the PSTN 206.
04 rings and responds when telephone 203 is reached via PSTN 206, Internet 205, and PSTN 206.
And the telephone 204 can communicate with each other.

The correspondence between the components in the above-described embodiment of the present invention and the components in the claims is as follows. The DTMF receiving unit 105 corresponds to a detecting unit, and includes a main control unit (CPU) 111, a line control unit 10
2. Digital line controller 103, protocol controller 10
4 corresponds to a communication control unit, a voice compression unit 107 corresponds to a compression unit, a packetizing unit 108 corresponds to a packetizing unit, a voice decompression unit 109 corresponds to a decompression unit, and a packet assembling unit 110 corresponds to an assembling unit. Corresponding to

Next, the operation of the thus-configured telephone exchange according to the embodiment of the present invention during a call will be described.

First, in the communication mode shown in FIG.
The telephone 203 and the telephone 204 are connected to the Internet 205
During a call through the first telephone exchange device 201, the telephone 2
The operation for receiving the DTMF signal from the third telephone exchange 03 and transmitting the received DTMF signal to the second telephone exchange 202 will be described with reference to the flowchart shown in FIG. FIG. 3 is a flowchart showing the operation procedure of the first telephone exchange 201.

In the first telephone exchange 201 of FIG. 2, the CPU 111 monitors the DTMF signal of the voice signal during a call (step S301), and
If no DTMF signal is detected in
The voice compression unit 107 compresses the voice signal during the call digitized by the CODEC in (step S302),
The compressed voice signal is packetized by the packetizer 108 (step S303), and the protocol controller 104 transmits the voice packet to the Internet 205 (step S304). Thereafter, a disconnection signal from the second telephone exchange device 202 communicating with the telephone line or the Internet 205 is monitored (step S305). If no disconnection signal is detected, the process returns to step S301 to maintain the state of the telephone call. If a disconnection signal is detected, the process proceeds to a disconnection process.

On the other hand, if the DTMF receiving section 105 detects a DTMF signal in step S301, the voice compression in the voice compression section 107 is stopped (step S306), and the second telephone exchange during communication from the digital network is performed. The apparatus 202 causes the digital circuit control unit 103 to transmit a call setup message including a user / user information element indicating reception of a DTMF signal (step S307).

As described above, the DTMF from the telephone
The first telephone exchange 201 having received the signal transmits the DT to the second telephone exchange 202 on a line different from the line used for the call.
An MF signal can be transmitted.

Next, in the communication mode shown in FIG.
The telephone 203 and the telephone 204 are connected to the Internet 205
The operation in which the second telephone exchange device 202 receives a DTMF signal from the first telephone exchange device 201 and transmits the received DTMF signal to the telephone set 204 during a call via the telephone is described with reference to the flowchart shown in FIG. I will explain it. FIG. 4 is a flowchart showing the operation procedure of the second telephone exchange device 202.

In the second telephone exchange 202 of FIG. 2, the CPU 111 monitors whether there is an incoming call from the digital line during a call (step S401), and if the digital line control unit 103 does not notify the call setting reception. Assemble the packet signal from the protocol control unit 104 into an audio signal compressed by the packet assembling unit 110 (step S4).
02), the compressed audio signal is expanded into a digital signal by the audio expansion section 109 (step S403), and the audio signal is transmitted to the telephone line from the line control section 102 (step S404). Then, telephone line or internet 2
In step S05, a disconnection signal from the first telephone exchange 201 that is communicating is monitored (step S405). If the disconnection signal is not detected, the process returns to step S401 to maintain the busy state and detect the disconnection signal. If so, the process proceeds to a disconnection process.

On the other hand, if the call setting reception is notified from the digital line control unit 103 in step S401, the voice expansion in the voice expansion unit 109 is stopped (step S40).
6), DTMF notified by receiving the DTMF signal in the call setup message notified by digital circuit control section 103
The signal is transmitted from the DTMF transmission unit 106 to the telephone 204 via the line control unit 102 and the telephone line (step S407).

As described above, the first telephone exchange 2
The second telephone exchange 202 can transmit the DTMF signal notified from 01 to the telephone during a call.

As described above, according to the telephone exchange apparatus in the communication system according to the embodiment of the present invention, the CODEC for converting voice signals into analog and digital signals is used.
And a line control unit 102 for controlling an analog telephone line.
And a digital line controller 1 for controlling a digital telephone line
03, a protocol control unit 104 for controlling the Internet line, and a D for detecting a DTMF signal from the telephone line.
A TMF receiving unit 105, a DTMF transmitting unit 106 for transmitting a DTMF signal to a telephone line, an audio compressing unit 107 for compressing an audio digital signal from the telephone line, and a packet for transmitting the compressed audio signal to the Internet. A packetizer 108 for converting the signal into a signal; and a voice expander 10 for expanding a compressed voice signal from the Internet line.
9, a packet assembling unit 110 for assembling a packetized voice signal from the Internet, and receiving a data signal from a telephone even when a line such as the Internet that does not guarantee call quality is used between telephone exchanges. Is a CPU 111 for setting another line between the telephone exchanges to guarantee the communication quality and executing transmission and reception of data signals.
And the telephones 203 and 204 are connected to the Internet 20.
When the first telephone exchange 201 receives a DTMF signal from the telephone 203 during a call via the telephone number 5, the received DTMF signal is transmitted to the second telephone exchange 202, and
If the second telephone exchange device 202 receives a DTMF signal from the first telephone exchange device 201 while the telephones 203 and 204 are talking via the Internet 205, the telephone 20
In order to execute the control of transmitting the received DTMF signal to the D.4, the following operations and effects are obtained.

In the above configuration, the DTMF receiving unit 105
When the DTMF signal is detected by the user, the voice compression in the voice compression unit 107 is stopped, and the second telephone exchange 202 which is communicating from the digital network is notified of the DTMF signal by the user.
It causes the digital line control unit 103 to transmit a call setup message including the user information element. Also, when the call setting reception is notified from the digital line control unit 103, the voice extension unit 1
09, the audio expansion is stopped, and the digital line control unit 103
The DTMF transmitting unit 106 transmits the DTMF signal notified by the DTMF signal reception in the call setting message notified by the DTMF transmitting unit 106 to the telephone 204 via the line control unit 102 and the telephone line.

Therefore, in the embodiment of the present invention,
Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

As another embodiment of the present invention, the embodiment of the invention described in claim 9 in the claims can be considered. In this case, an embodiment can be realized by combining the operation procedure of the first telephone exchange apparatus 201 and the operation procedure of the second telephone exchange apparatus 202 described in detail in the above-described embodiment of the present invention.

In the embodiment of the present invention described above, the configuration of the telephone exchange shown in FIG. 1 is merely an example, and it goes without saying that the configuration is not limited to the above. Also, the telephone device has been described as an example of the terminal device. However, it is needless to say that computers and the like installed in various online centers are also included in the terminal device connected to the telephone line, and the form of communication is also the form shown in FIG. Needless to say, it is not limited to this.

Although the DTMF signal has been described as an example of the data signal, it is apparent that a modem signal used for data communication or facsimile communication performed by a personal computer or the like can be similarly implemented by demodulating the signal to a digital signal. It goes without saying that the data signal is not limited at all. Also, the line between the telephone and the telephone exchange during a call has been described as an analog line, but it goes without saying that the line between the telephone exchanges during a call may be used as the Internet, not to mention that a digital line may be used.
It goes without saying that the present invention can be applied to a line such as a dedicated line or a private network, and it goes without saying that these lines are not limited at all.

The line for transmitting and receiving data signals between telephone exchanges has been described as an ISDN line. However, if the line does not change the order of arrival packets or delay or loss like a packet network, the ISDN line is used. It is needless to say that the present invention is not limited to this. Although the transmission and reception of the data signal is the transmission and reception of the user / user information element of the call setup message, the information element may be a sub-address information element, a keypad facility or other information elements, and the message is not limited at all. Needless to say, there is nothing. In addition, the above messages and information elements
It is assumed that an ISDN line is used for transmission and reception of data signals. If a line other than the ISDN line is used, a message system other than these may be used.

The present invention may be applied to a system constituted by a plurality of devices or to an apparatus constituted by a single device. A storage medium storing software program codes for realizing the functions of the above-described embodiments is supplied to a system or an apparatus, and a computer (or CPU or MPU) of the system or the apparatus executes the program code stored in the storage medium. Needless to say, this can also be achieved by executing the reading.

In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS and the like running on the computer are actually executed based on the instructions of the program code. It goes without saying that a part or all of the above-described processing is performed, and the functions of the above-described embodiments are realized by the processing.

Further, after the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0064]

As described above, according to the telephone exchange of the present invention, a telephone exchange capable of accommodating a plurality of communication lines for communication with a terminal and other telephone exchanges. And detecting means for detecting a data signal arriving via the communication line, and communication control means for transmitting the data signal to another communication line when the data signal is detected. It has the following effects. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the telephone exchange device of the present invention, the first communication line for communication with the terminal device and another telephone exchange device, the second communication line for communication with the other telephone exchange device, and the second communication line for communication with the other telephone exchange device. Third
A telephone exchange device capable of accommodating the communication line of claim 1, wherein said detection means detects a data signal arriving via said first communication line, and said data signal is detected when said data signal is detected. Since it has the communication control means for sending out to the third communication line with the switching device, the following effects can be obtained. Even if a line such as the Internet is used, the communication quality of which is not guaranteed,
Since it is possible to provide a telephone line network capable of reliably transmitting and receiving data signals such as MF signals and modem signals, it is possible to receive various online services during a telephone call using a line for which communication quality is not guaranteed, or to provide a telephone answering machine or the like. There is an effect that remote control and various data communication can be performed.

According to a third aspect of the present invention, there is provided a telephone exchange which compresses an audio signal received from the first communication line with the terminal device, and converts the compressed audio signal into a packet. And the communication control means transmits the packetized voice signal to the second communication line between the telephone exchange device and the other telephone exchange device. To play. In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the telephone exchange device of the present invention, the first communication line for communication with the terminal device and another telephone exchange device, the second communication line for communication with the other telephone exchange device and Third
Detecting a data signal arriving via the third communication line from the another telephone exchange device communicating via the second communication line. Means and a communication control means for transmitting the data signal to the first communication line between the terminal device and the terminal device when the data signal is detected. Even if a line such as the Internet is used, the communication quality of which is not guaranteed,
Since it is possible to provide a telephone line network capable of reliably transmitting and receiving data signals such as MF signals and modem signals, it is possible to receive various online services during a telephone call using a line for which communication quality is not guaranteed, or to provide a telephone answering machine or the like. There is an effect that remote control and various data communication can be performed.

According to a fifth aspect of the present invention, there is provided a telephone exchange apparatus comprising: an assembling means for assembling a packetized voice signal; and an expanding means for expanding the assembled signal into an audio signal. Means for receiving a packetized voice signal from the second communication line with the another telephone exchange and outputting the packetized voice signal to the assembling means, and transmitting the voice signal decompressed by the decompression means to the terminal device Since the data is transmitted to the first communication line between the first communication line and the second communication line, the following effects are obtained. In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the telephone exchange apparatus of the present invention, the communication line is an analog telephone line, a digital telephone line, an Internet line, a dedicated line, a private network line, or the like. It works. When using an analog telephone line, digital telephone line, Internet line, dedicated line, private network line, etc. as a communication line, you can receive various online services during a call using a line whose call quality is not guaranteed, as described above. There is an effect that remote operation of a telephone answering machine or the like and various data communications can be performed.

According to the telephone exchange of the present invention, since the terminal is a telephone, a computer, or the like, the following effects can be obtained. When a telephone, a computer, or the like is used as the terminal device, the user can receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed, as described above. There is an effect that data communication can be performed.

According to the telephone switching apparatus of the present invention, since the data signal is a DTMF signal, a modem signal or the like, the following effects are obtained. In the case where a DTMF signal, a modem signal, or the like is used as a data signal, similarly to the above, it is possible to receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed. There is an effect that various data communication can be performed.

According to the communication system of the present invention, at least two telephone exchanges and a terminal are provided, and the first telephone exchange is the first terminal and the second telephone exchange. And the second telephone exchange device is configured to communicate with the second terminal device and the first telephone exchange device, and transmits and receives a voice signal between the first and second terminal devices. Wherein the first telephone switching device comprises: first detection means for detecting a data signal coming from the first terminal device; and a data signal when the data signal is detected. And a first communication control means for sending the second telephone exchange device to the second telephone exchange device via a communication line, wherein the second telephone exchange device transmits the first telephone exchange device from the first telephone exchange device via the communication line. Second detection for detecting an incoming data signal For a stage, when the data signal is detected and a second communication control means for sending the data signal to the second terminal apparatus, it provides the following advantages. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the communication system of the present invention, the first telephone exchange comprises a compression means for compressing a voice signal received from the first terminal device, and a compression means for compressing the voice signal. Packetizing means for packetizing, wherein the first communication control means sends the packetized voice signal to the second telephone exchange via another communication line, The telephone switching device has assembling means for assembling a packetized voice signal, and decompression means for decompressing the assembled signal into a voice signal,
The communication control means of the first aspect, via the another communication line, the first
Receiving the packetized voice signal from the telephone exchange device and outputting the voice signal to the assembling means, and transmitting the voice signal expanded by the expansion means to the second terminal device, the following effects are obtained. . In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the communication system of the present invention, since the communication line is an analog telephone line, digital telephone line, Internet line, dedicated line, private network line, etc., the following effects can be obtained. To play. When using an analog telephone line, digital telephone line, Internet line, dedicated line, private network line, etc. as a communication line, you can receive various online services during a call using a line whose call quality is not guaranteed, as described above. There is an effect that remote operation of a telephone answering machine or the like and various data communications can be performed.

According to the communication system of the present invention, since the terminal device is a telephone, a computer, or the like, the following effects can be obtained. When a telephone, a computer, or the like is used as the terminal device, the user can receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed, as described above. There is an effect that data communication can be performed.

According to the communication system of the present invention, since the data signal is a DTMF signal, a modem signal, or the like, the following effects can be obtained. In the case where a DTMF signal, a modem signal, or the like is used as a data signal, similarly to the above, it is possible to receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed. There is an effect that various data communication can be performed.

According to the communication control method of the present invention, there is provided a communication control method applied to a telephone exchange device capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange device. There is a detection step of detecting a data signal arriving via the communication line, and a communication control step of sending the data signal to another communication line when a data signal is detected. Effect. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the communication control method of the present invention, the first communication control method for communication with a terminal device or another telephone exchange device is provided.
A communication control method applied to a telephone exchange device capable of accommodating a second communication line and a second and third communication line for communication with another telephone exchange device, the communication control method comprising the steps of: And a communication control step of sending the data signal to the third communication line with the other telephone exchange when the data signal is detected. The effect is as follows. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the communication control method of the present invention, a compression step of compressing an audio signal received from the first communication line with the terminal device, and a step of compressing the compressed audio signal into a packet. The communication control step includes transmitting the packetized voice signal to the second communication line with the other telephone switching device. To play. In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the communication control method of the present invention, the first method for communication with a terminal device or another telephone exchange device is provided.
A communication control method applied to a telephone exchange device capable of accommodating second and third communication lines for communication with another communication line and another telephone exchange device, wherein communication is performed via the second communication line. A detecting step of detecting a data signal arriving via the third communication line from the other telephone exchange device, and, if a data signal is detected, transmitting the data signal to the terminal device. And a communication control step of transmitting the data to one communication line. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the communication control method of the present invention, there is provided an assembling step of assembling a packetized audio signal, and an expanding step of expanding the assembled signal into an audio signal. In the step, a packetized voice signal is received from the second communication line with the other telephone exchange device and output to the assembling step, and the voice signal expanded in the expansion step is transmitted to the terminal device. Since the data is transmitted to the first communication line between the first communication line and the second communication line, the following effects are obtained. In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the communication control method of the present invention, at least two telephone exchanges and a terminal are provided, and the first telephone exchange is provided with the first terminal and the second telephone exchange. And a second telephone switching device configured to be communicable with the second terminal device and the first telephone switching device, and for transmitting a voice signal between the first and second terminal devices. A communication control method applied to a communication system capable of transmitting and receiving, wherein the first telephone exchange device detects a data signal coming from the first terminal device.
And a first communication control step of sending a data signal to the second telephone exchange device via a communication line when a data signal is detected, wherein the second telephone exchange device A second detecting step of detecting a data signal coming from the first telephone exchange device via the communication line, and transmitting the data signal to the second terminal device when the data signal is detected. The second effect of the present invention is as follows. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the communication control method of the present invention, the first telephone exchange device compresses a voice signal received from the first terminal device; And a packetizing step of packetizing the packetized voice signal. In the first communication control step, the packetized voice signal is transmitted to the second communication line via another communication line.
To the telephone exchange of the second, said second telephone exchange,
An assembling step of assembling the packetized audio signal, and an expanding step of expanding the assembled signal into an audio signal, wherein in the second communication control step, the first communication is performed via the another communication line. Since the packetized voice signal is received from the telephone exchange and output to the assembling step, and the voice signal expanded in the expansion step is sent to the second terminal device, the following effects are obtained. In the same manner as described above, it is possible to receive various online services or perform remote control of an answering machine, etc., and perform various data communications during a call using a line whose call quality is not guaranteed.

According to the communication control method of the present invention, since the communication lines are analog telephone lines, digital telephone lines, Internet lines, dedicated lines, private network lines, etc. It works. When using an analog telephone line, digital telephone line, Internet line, dedicated line, private network line, etc. as a communication line, you can receive various online services during a call using a line whose call quality is not guaranteed, as described above. There is an effect that remote operation of a telephone answering machine or the like and various data communications can be performed.

According to the communication control method of the present invention, since the terminal device is a telephone, a computer, or the like, the following effects can be obtained. When a telephone, a computer, or the like is used as the terminal device, the user can receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed, as described above. There is an effect that data communication can be performed.

According to the communication control method of the present invention, since the data signal is a DTMF signal, a modem signal, or the like, the following effects are obtained. In the case where a DTMF signal, a modem signal, or the like is used as a data signal, similarly to the above, it is possible to receive various online services or remotely operate an answering machine or the like during a call using a line whose call quality is not guaranteed. There is an effect that various data communication can be performed.

According to the storage medium of the present invention, a communication control method applied to a telephone exchange device capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange device is executed. A storage medium readable by a computer storing a program to be executed, the communication control method comprising the steps of: detecting a data signal arriving via the communication line; and detecting the data signal when the data signal is detected. And a communication control step of sending out to another communication line, the following effects can be obtained. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the storage medium of the present invention, the first communication line for communication with a terminal device or another telephone exchange device, and the second and second communication lines for communication with another telephone exchange device are provided. A storage medium readable by a computer storing a program for executing a communication control method applied to a telephone exchange device capable of accommodating the third communication line, wherein the communication control method is executed via the first communication line. And a communication control step of, when a data signal is detected, sending the data signal to the third communication line with the another telephone exchange. The following effects are obtained. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the storage medium of the present invention, the first communication line for communication with a terminal device or another telephone exchange device, and the second and second communication lines for communication with another telephone exchange device are provided. A storage medium readable by a computer storing a program for executing a communication control method applied to a telephone exchange device capable of accommodating the third communication line, wherein the communication control method is executed via the second communication line. Detecting a data signal arriving via the third communication line from the other telephone exchange device communicating with the terminal device, and, if a data signal is detected, transmitting the data signal to the terminal device. Since the method includes the step of controlling the transmission to the first communication line, the following effects can be obtained. Even when a line such as the Internet is used for which the communication quality is not guaranteed, a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals can be provided. It is possible to receive various online services or perform remote control of an answering machine or the like during a call using a line that is not guaranteed, and to perform various data communications.

According to the storage medium of the present invention, there is provided at least two telephone exchanges and a terminal, wherein the first telephone exchange is the first terminal and the second telephone exchange. And the second telephone exchange device is configured to communicate with the second terminal device and the first telephone exchange device, and transmits and receives a voice signal between the first and second terminal devices. A computer-readable storage medium storing a program that executes a communication control method applied to a communication system capable of performing the communication, wherein the communication control method is such that the first telephone exchange device is the first terminal device. A first detection step of detecting a data signal arriving from a first communication control step of transmitting the data signal to the second telephone exchange device via a communication line when a data signal is detected. A second detection step in which the second telephone exchange detects a data signal arriving from the first telephone exchange via the communication line; and, if a data signal is detected, the data signal is transmitted to the second telephone exchange. And the second communication control step of transmitting the data to the second terminal device. Even if you use a line for which the call quality is not guaranteed, such as the Internet,
It is possible to provide a telephone network capable of reliably transmitting and receiving data signals such as DTMF signals and modem signals between terminals, so that various types of online services can be received or answering machines during a call using a line whose call quality is not guaranteed. There is an effect that remote operation of the device or the like and various data communication can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a telephone exchange according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a schematic configuration of a communication mode according to the embodiment of the present invention.

FIG. 3 is a flowchart showing an operation procedure of the first telephone exchange according to the embodiment of the present invention.

FIG. 4 is a flowchart showing an operation procedure of the second telephone exchange according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 102 Line control unit 103 Digital line control unit 104 Protocol control unit 105 DTMF reception unit 106 DTMF transmission unit 107 Voice compression unit 108 Packetization unit 109 Voice decompression unit 110 Packet assembling unit 111 CPU 201 First telephone switching device 202 Second Telephone exchange 203, 204 Telephone 205 Internet 206 PSTN

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H04Q 3/545 H04L 11/20 102A 5K101 11/04 H04Q 11/04 RF term (Reference) 5K024 AA00 AA73 AA78 CC01 CC09 DD05 EE01 5K026 AA12 CC07 EE10 FF17 GG12 HH06 5K030 GA17 HA01 HA08 HC02 HC05 HC13 JT01 JT06 KA19 LA07 LB15 5K051 AA02 BB01 CC02 DD01 EE01 GG02 GG15 HH18 HH25 JJ05 FB03 FC03 FCA KK06 KK11 LL02 NN02 RR05 SS08 TT02 UU03

Claims (27)

[Claims] 1. A telephone exchange device capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange device, comprising: detection means for detecting a data signal arriving via the communication line; Communication control means for transmitting the data signal to another communication line when the data signal is detected. 2. A first communication line for communication with a terminal device or another telephone exchange device, and a second communication line for communication with another telephone exchange device.
And a telephone exchange device capable of accommodating a third communication line, comprising: detecting means for detecting a data signal arriving via the first communication line; and detecting the data signal when the data signal is detected. Communication control means for transmitting to the third communication line between the telephone exchange device and another telephone exchange device. 3. The communication control device according to claim 1, further comprising a compression unit configured to compress an audio signal received from the first communication line with the terminal device, and a packetization unit configured to packetize the compressed audio signal. 3. The telephone exchange according to claim 2, wherein said means sends said packetized voice signal to said second communication line with said another telephone exchange. 4. A first communication line for communication with a terminal device or another telephone exchange device, and a second communication line for communication with another telephone exchange device.
And a telephone exchange device capable of accommodating a third communication line, wherein a data signal arriving via the third communication line from the other telephone exchange device communicating via the second communication line is transmitted. A telephone exchange device comprising: a detecting means for detecting; and a communication control means for transmitting, when a data signal is detected, the data signal to the first communication line with the terminal device. 5. An assembling means for assembling a packetized voice signal, and an expanding means for expanding the assembled signal into an audio signal, wherein the communication control means communicates with the other telephone exchange device. Receiving the packetized audio signal from the second communication line and outputting it to the assembling means;
5. The telephone exchange according to claim 4, wherein the voice signal expanded by the expansion unit is transmitted to the first communication line between the terminal and the terminal device. 6. The communication line is an analog telephone line,
The telephone exchange according to any one of claims 1 to 5, wherein the telephone exchange is a digital telephone line, an Internet line, a dedicated line, a private network line, or the like. 7. The telephone exchange device according to claim 1, wherein the terminal device is a telephone, a computer, or the like. 8. The telephone switching device according to claim 1, wherein the data signal is a DTMF signal, a modem signal, or the like. 9. A communication system comprising at least two telephone exchanges and a terminal, wherein the first telephone exchange is communicable with the first terminal and the second telephone exchange and has a second The telephone exchange device is a communication system configured to be able to communicate with a second terminal device and a first telephone exchange device, and capable of transmitting and receiving a voice signal between the first and second terminal devices. The telephone exchange device comprises: first detection means for detecting a data signal coming from the first terminal device; and, when a data signal is detected, the data signal is transmitted to the second telephone exchange device via a communication line. First communication control means for sending to the device, the second telephone switching device, wherein the second telephone switching device detects a data signal coming from the first telephone switching device via the communication line. If a data signal is detected, Communication system; and a second communication control means for sending a signal to the second terminal device. 10. The first telephone switching device according to claim 1, wherein
Compression means for compressing the audio signal received from the terminal device, and packetizing means for packetizing the compressed audio signal, wherein the first communication control means separates the packetized audio signal from another. Via the communication line to the second telephone exchange device, the second telephone exchange device assembling means for assembling a packetized voice signal, and decompression means for expanding the assembled signal into a voice signal Wherein the second communication control means receives the packetized voice signal from the first telephone exchange via the another communication line, outputs the packetized voice signal to the assembling means, and outputs the packetized audio signal to the assembling means. 10. The communication system according to claim 9, wherein the audio signal decompressed is transmitted to the second terminal device. 11. The communication system according to claim 9, wherein the communication line is an analog telephone line, a digital telephone line, an Internet line, a dedicated line, a private network line, or the like. 12. The communication system according to claim 9, wherein the terminal device is a telephone, a computer, or the like. 13. The data signal is a DTMF signal,
13. A modem signal or the like.
The communication system according to any one of the above. 14. A communication control method applied to a telephone exchange device capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange device, comprising a data signal arriving via the communication line. And a communication control step of, when a data signal is detected, transmitting the data signal to another communication line. 15. A telephone exchange device capable of accommodating a first communication line for communication with a terminal device or another telephone exchange device and second and third communication lines for communication with another telephone exchange device. A communication control method to be applied, comprising: a detecting step of detecting a data signal arriving via the first communication line; and, if a data signal is detected, transmitting the data signal to the other telephone exchange device. And a communication control step of transmitting the data to the third communication line. 16. A compression step of compressing an audio signal received from the first communication line with the terminal device;
A packetizing step of packetizing the compressed voice signal, wherein in the communication control step, the packetized voice signal is transmitted to the second communication line with the another telephone exchange. 16. The method according to claim 15, wherein:
The communication control method described in the above. 17. A telephone exchange device capable of accommodating a first communication line for communication with a terminal device or another telephone exchange device and second and third communication lines for communication with another telephone exchange device. A communication control method to be applied, comprising: a detecting step of detecting a data signal arriving via the third communication line from the another telephone exchange device communicating via the second communication line; A communication control step of transmitting the data signal to the first communication line with the terminal device when a signal is detected. 18. An assembling step of assembling a packetized voice signal, and a decompression step of decompressing the assembled signal into a voice signal, wherein the communication control step includes the steps of: A packetized voice signal is received from the second communication line and output to the assembling step, and the voice signal expanded in the expansion step is transmitted to the first communication line between the terminal device and the terminal device. The communication control method according to claim 17, wherein: 19. At least two telephone exchanges and a terminal device, wherein the first telephone exchange device is configured to be able to communicate with the first terminal device and the second telephone exchange device,
The second telephone exchange device is configured to be able to communicate with the second terminal device and the first telephone exchange device, and is applied to a communication system capable of transmitting and receiving a voice signal between the first and second terminal devices. A communication control method, wherein the first telephone exchange device performs a first detection step of detecting a data signal coming from the first terminal device, and communicates the data signal when the data signal is detected. A first communication control step of sending to the second telephone exchange device via a line, wherein the second telephone exchange device comes from the first telephone exchange device via the communication line. A communication control method comprising: a second detection step of detecting a data signal; and a second communication control step of transmitting the data signal to the second terminal device when the data signal is detected. . 20. The first telephone switching device, wherein the first telephone switching device
A compression step of compressing an audio signal received from the terminal device, and a packetization step of packetizing the compressed audio signal. In the first communication control step,
Sending the packetized voice signal to the second telephone exchange via another communication line, wherein the second telephone exchange assembles the packetized voice signal; Decompressing a signal into a voice signal, wherein in the second communication control step, the packetized voice signal is received from the first telephone exchange via the another communication line, and the assembling is performed. 20. The communication control method according to claim 19, further comprising: outputting the audio signal expanded in the expansion step to the second terminal device while outputting the audio signal to the second terminal device. 21. The communication control method according to claim 14, wherein the communication line is an analog telephone line, a digital telephone line, an Internet line, a dedicated line, a private network line, or the like. . 22. The communication control method according to claim 14, wherein the terminal device is a telephone, a computer, or the like. 23. The data signal is a DTMF signal,
3. The signal according to claim 1, wherein the signal is a modem signal.
3. The communication control method according to any one of 2. 24. A computer-readable storage medium storing a program for executing a communication control method applied to a telephone exchange device capable of accommodating a plurality of communication lines for communication with a terminal device and another telephone exchange device. Wherein the communication control method includes a detection step of detecting a data signal arriving via the communication line, and a communication control step of transmitting the data signal to another communication line when the data signal is detected. A storage medium characterized by having: 25. A telephone exchange device capable of accommodating a first communication line for communication with a terminal device or another telephone exchange device and second and third communication lines for communication with another telephone exchange device. A computer-readable storage medium that stores a program that executes a communication control method to be applied, the communication control method comprising: a detection step of detecting a data signal arriving via the first communication line; A communication control step of transmitting the data signal to the third communication line with the another telephone exchange when a data signal is detected. 26. A telephone exchange device capable of accommodating a first communication line for communication with a terminal device or another telephone exchange device and second and third communication lines for communication with another telephone exchange device. A computer-readable storage medium storing a program that executes a communication control method to be applied, wherein the communication control method is configured to transmit the communication control method from the other telephone exchange device communicating via the second communication line. A detection step of detecting a data signal arriving via a third communication line, and a communication control step of transmitting the data signal to the first communication line between the terminal device and the terminal device when a data signal is detected. And a storage medium comprising: 27. At least two telephone exchanges and a terminal, wherein the first telephone exchange is communicable with the first terminal and the second telephone exchange, and
The second telephone exchange device is configured to be able to communicate with the second terminal device and the first telephone exchange device, and is applied to a communication system capable of transmitting and receiving a voice signal between the first and second terminal devices. A computer-readable storage medium storing a program for executing a communication control method, the communication control method comprising: a first telephone exchange device for detecting a data signal coming from the first terminal device; 1, a first communication control step of transmitting a data signal to a second telephone exchange device via a communication line when a data signal is detected, and the second telephone exchange device A second detecting step of detecting a data signal arriving from the first telephone exchange device via a communication line, and transmitting the data signal to the second terminal device when the data signal is detected. And a second communication control step.