JP2523573B2 - Telephone device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a telephone device.

2. Description of the Related Art In the conventional button telephone, the caller side operator adds an attribute signal indicating whether the caller terminal is a telephone or a facsimile at the caller side terminal to the telephone number or sends the attribute signal. Even if you do not take such a procedure in
The calling exchange automatically determines the attribute of the calling terminal, adds the attribute signal to the transmission signal and sends it, and the receiving side identifies the attribute signal and switches to the corresponding called terminal to connect. There was something to do.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the configuration of the conventional key telephone, an exchange having means for adding an attribute signal for designating the attribute of the terminal on the calling side and an attribute signal on the receiving side are received. Since it requires an exchange having a means for discriminating its contents, it is impossible to use a conventional exchange that is generally used.

Moreover, although it is suitable for a local communication network in a specific range in which attributes can be specified for communication, it is not suitable for connecting to a general public line for use. Further, there is a problem in that the communication may be disturbed by operating the telephone during the facsimile communication, for example.

In view of the above problems, the present invention does not require a function for adding or discriminating terminal attributes in both the calling side and receiving side exchanges, and switches between a general terminal such as a facsimile connected to an extension and a button telephone. It is an object of the present invention to provide a telephone device capable of

Means for Solving the Problems In order to achieve the above object, the present invention is a telephone device including an exchange, a key telephone, and a general terminal, wherein the exchange includes a communication line connected to an external line. A DC loop monitoring means for detecting the hook state of the general terminal,
A first control means for outputting to the first data communication means a control signal according to the hook state detected by the DC loop monitoring means, and a first control signal for outputting the control signal output by the first control means. The key telephone includes a data communication means, a call circuit means for managing a voice call, a second data communication means connected to the first data communication means of the exchange to receive the control signal, and usually A relay contact for connecting the general terminal to the call line of the exchange, switching the general terminal to the call circuit means to connect to the call line of the switch according to an off-hook of the key telephone, and the second contact. Second control means for controlling switching of the relay contact based on a control signal received by the data communication means, the general terminal being subordinately connected to the key telephone, The first control means is connected to the telephone line of the exchange through the relay contact of the telephone, and when the DC loop monitoring means of the exchange detects the off-hook of the general terminal through the relay contact of the button telephone, the first control means performs data communication. When a second data communication unit of the key telephone receives a control signal from the data communication unit of the exchange, the second control unit has a relay contact and communication circuit means of the exchange to communicate with the exchange. The configuration is characterized by prohibiting connection to the line.

With the above configuration, if a general terminal such as a facsimile connected to the extension answers the incoming call from the telephone line first, the control means of the button telephone does not connect the button telephone to the telephone line. Does not interfere with the reception operation of general terminals.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram when a button telephone is connected to an electronic exchange which is an embodiment of the present invention and a general terminal device is connected to the button telephone. 100 is an electronic exchange.
In the electronic exchange 100, 107 is a DC loop monitoring unit that monitors a DC loop current and a pulse dial signal of the subscriber line 202, and 108 is a bell that supplies a bell signal for calling the general terminal device 400 to the subscriber line 202. Signal generator, 105
Is a subscriber circuit unit that supplies a DC loop current to the subscriber line 202 and performs coupling in the voice band. Reference numeral 109 is a relay contact for switching the connection between the DC loop monitoring unit 107 and the subscriber circuit unit 105 and the connection between the DC loop monitoring unit 107 and the bell signal generating unit 108, and a is a terminal of the subscriber circuit unit 105, Reference numeral b is a terminal of the bell signal generator 108. A data communication unit 102 is connected to the data communication line 201 and performs data communication with the key telephone 300. The DC loop monitoring unit 107, the bell signal generating unit 108, the subscriber circuit unit 105 described above,
Subscriber interface unit 110 by data communication unit 102
Is configured. Reference numeral 103 is a station line track unit which is connected to a station line 204 from an external exchange and electrically interfaces with the station line 204. Reference numeral 104 denotes a speech path section for switching connection between a plurality of extension lines and an outside line, and a subscriber circuit section 105 and a station line track section 103 provided in each of the plurality of extension lines are joined in a voice band. Be done. Reference numeral 106 denotes a DTMF receiving unit, and the DTMF receiving unit 106 is connected to the call line unit 104 together with the office line trunk unit 103 and the subscriber circuit unit 105. That is, the call path unit 104 can be connected to the subscriber circuit unit 105, and the multi-frequency selection signal transmitted from the general terminal device via the subscriber line 202 is sent to the DC loop monitoring unit 107 and the subscriber circuit unit. Can be received through 105. A control unit 101 receives information from the data communication unit 102, the DTMF receiving unit 106, and other devices and controls the subscriber interface unit 110, the communication path unit 104, the office line trunk unit 103, and the like. Reference numeral 111 is an audible sound generator that generates an audible sound signal.

Next, the configuration of the key telephone 300 will be described. 302
Is a data communication unit for exchanging signals with the electronic exchange 100 and the data communication line 201, and 303 is for sending a ring tone to the user and for displaying an incoming call lamp, a busy lamp, a lamp in use by another terminal, etc. The display unit 304 is an operation unit provided with a dial button, an outside line selection button, and other function buttons for controlling the functions of the electronic exchange 100, and 305 is a call circuit unit that enables a voice call at the receiver 306. 307
Is a relay contact 308 for connecting the subscriber line 202 to the communication circuit unit 305, and a relay contact 309 for connecting the subscriber line 202 to the auxiliary subscriber line, and 309 is an audible sound generating unit. 301 is the operation unit 30
A control unit that controls input / output from 4 and closing / opening / closing of the relay contact 307 and the relay contact 308, control of data input / output with the data communication unit 302, control of the display unit 303, control of the communication circuit unit 305, and the like. is there.

The operation when the button telephone is connected to the electronic exchange of this embodiment configured as described above and the general terminal device is connected to the button telephone will be described with reference to the sequence flows of FIGS. 2 to 5.

FIG. 2 (a) shows that a button telephone 300 connected to the subscriber line 202 from the electronic exchange 100 and a general terminal device 400 connected to the attached subscriber line 203 receive an incoming call at the same time, and the button telephone 300 comes first. FIG. 2 (b) is a sequence flow in the case where the general terminal device 400 goes off-hook first. Electronic exchange
When the bell signal arrives at 100, the electronic exchange 100 sends the incoming call data to the key telephone 300 through the data communication line 201, and the key telephone 300 receives the incoming data and controls the control unit 3
01 causes the display unit 303 to display an incoming call. Further, the control unit 101 of the electronic exchange 100 switches the relay contact 109 to the terminal b side for the general terminal device 400 to connect the bell signal generation unit 108 and the DC loop monitoring unit 107, and the subscriber line 202 and the relay. General terminal device 40 through contact point 308 and attached subscriber line 203
Send bell signal to 0. The general terminal device 400 makes a bell ring by a bell signal. Next, the receiver 3 of the button telephone 300
When 06 is off-hook, the off-hook data is sent out by the control unit 301 to the electronic exchange 100 through the data communication line 201. Since the control unit 101 can recognize the incoming call response of the key telephone 300 by the off-hook data, the corresponding contact data is transmitted to the key telephone 300 and at the same time the relay contact is transmitted.
By switching 109 to the terminal a side and disconnecting and connecting the DC loop monitor 107 and the bell signal generator 108, the bell signal is stopped and the general terminal device is stopped. Button telephone 300
Receives the response data sent from the control unit 101,
The control unit 301 causes the display unit 303 to display an indication that the subscriber line is in use, and at the same time closes the relay contact 307, opens the relay contact 308, and disconnects the auxiliary subscriber line 203 from the subscriber line. After the bell is stopped, even if the general terminal is hooked, the relay contact 308 is opened and the auxiliary subscriber line 203 is disconnected from the subscriber line 202, making it unusable and tapping the telephone call of the button telephone 300 from the general terminal device. Becomes impossible. When the key telephone set 300 is on-hook, on-hook data is sent from the control unit 301 to the electronic exchange 100 and the electronic exchange 1
00 recognizes the end of the call on the key telephone 300, and returns the response data to the key telephone 300. The key telephone 300 causes the display unit 303 to display an unused state according to the response data, and at the same time, opens the relay contact 307 and closes the relay contact 308 to connect the subscriber line 202 and the attached subscriber line 203, The general terminal device 400 can be used.

Button telephone 3 when a bell signal arrives at the electronic exchange 100
Incoming data is sent to 00 through the data communication line 201, and the control unit 301 of the key telephone 300 causes the display unit 303 to display an incoming call from the incoming data. Further, the control unit 101 switches the relay contact 109 to the terminal b side for the general terminal device 400 to connect the bell signal generation unit 108 and the DC loop monitoring unit 107, and connects the subscriber line 202, the relay contact 308, and the attached subscriber. Line 203
To send a bell signal to the general terminal device 400. The general terminal device 400 makes a bell ring by a bell signal. Next, when the general terminal device 400 goes off-hook, the general terminal device 400
Closes the DC loop through the attached subscriber line 203, relay contact 308, and subscriber line 202. The electronic exchange 100 detects the closing of the DC loop of the general terminal device 400 by the DC loop monitoring unit 107, recognizes the incoming call response, and the control unit 101 returns the response data that the incoming call response is recognized to the key telephone 300. At the same time, the relay contact 109 is switched to the terminal a side to disconnect the DC loop monitoring unit 107 and the bell signal generating unit 108 to stop the bell signal to the general terminal device and stop the general terminal device 400. Based on the response data, the control unit 301 causes the display unit 303 to display that the subscriber line 202 is being used by the general terminal device 400 and that another terminal is being used. When the other terminal is in use, even if the key telephone 300 is off-hook, the other terminal is in use, so the relay contact 307 is not closed and the call of the general terminal device 400 cannot be tapped. Next, when the general terminal device goes on-hook, the DC loop is opened through the attached subscriber line 203, relay contact 308, and subscriber line 202. In the electronic exchange 100, the DC loop monitoring unit 107 recognizes the end of the call due to the opening of the DC loop of the general terminal device 400, and the control unit 101 returns the response data indicating that the general terminal device 400 is on-hook to the key telephone 300. Control unit 3
01 indicates on the display unit 303 that the subscriber line 202 has been opened and the unused state is displayed on the display unit 303 based on the response data, and at the same time, the key telephone set 300 is ready to use the subscriber line 202. Although the above description is for simultaneous incoming calls, single incoming calls to the extension key telephone 300 and general terminal device 400 are also
This can be easily realized by individually transmitting the incoming data and the bell signal.

Next, FIG. 3 (a) is a sequence flow when the key telephone 300 goes off-hook first for making a call, and FIG. 3 (b) is a sequence flow when the general terminal device 400 goes off-hook first for making a call. Is. First button telephone
When 300 goes off-hook to make a call, the control unit 301 transmits the off-hook data to the electronic exchange 100 through the data communication line 201, the electronic exchange 100 recognizes the calling state of the button telephone 300, and the control unit 101 sends the button telephone 300. Return the response data. The control unit 301 uses the response data to display the display unit 303.
To display the busy status, and at the same time close the relay contact 307 to connect the subscriber line 202 and the call circuit unit 305, and
8 is opened and the subscriber line 202 and the attached subscriber line 203 are cut off to make the general terminal device 400 unusable. Next, when the key telephone set 300 dials, the dial data is received by the electronic exchange 100, and the electronic exchange 100
Calls the other party by using dial data. The sequence flow of the other party's response thereafter is the same as the sequence flow 570 of FIG. Next, when the general terminal device 400 goes off hook first, the DC loop is closed through the attached subscriber line 203, the relay contact 308, and the subscriber line 202. The DC loop monitoring unit 107 detects the closing of the DC loop, the control unit 101 recognizes the calling state, sends response data to the key telephone 300, and the control unit 301 uses the response data to display another terminal on the display unit 303. At the same time that the middle display is performed, the relay contact 307 is set in the unconnectable state, and the key telephone 300 is set in the unusable state. Next, when the general terminal device 400 dials,
The dial signal is sent to the electronic exchange 100 through the attached subscriber line 203, the relay contact 308, and the subscriber line 202. If the dial signal from the general terminal device is a DTMF signal, the electronic exchange 100 receives it by the DTMF receiving unit 106, and if the dial signal is a pulse dial signal, it is a DC loop open / close signal, and the DC loop monitoring is performed. The unit 107 receives and calls the corresponding partner. The subsequent sequence of the partner response is the same as the sequence flow 580 of FIG. 2 (b).

Next, FIG. 4 shows a general terminal device which originates from the button telephone 300 connected to the same subscriber line 202 of the electronic exchange 100 and is connected to the auxiliary subscriber line 203 of the button telephone 300.
This is a sequence flow when 400 is received. When the key telephone 300 goes off-hook, the control unit 301 sends off-hook data. The electronic exchange 100 includes a data communication unit 102.
As a result, when the off-hook data is received, the calling state is set, and the control unit 101 returns the response data to the key telephone 300. Based on the response data, the key telephone 300 causes the display unit 303 to display an in-use state, closes the relay contact 307, opens the relay contact 308, and disables the general terminal device 400. Next, when a dial operation is performed to call the general terminal device 400 connected to the attached subscriber line, the dial data is sent to the electronic exchange 100 through the data communication line 201. When the control unit 101 receives the dial data from the key telephone set 300, it switches the relay contact 109 to the terminal b side to connect the bell signal generation unit 108 and the DC loop monitoring unit 107, the subscriber line 202, the relay contact 308, Attached subscriber line 203
Through the bell signal to the general terminal device 400 and the response data to the key telephone 300, the key telephone 300 opens the relay contact 307 and closes the relay contact 308 according to the response data, and the bell signal is attached. Subscriber line 203
Through the general terminal device 400.
Also, the key telephone 300 sends a ringing tone from the audible sound generating unit 309 to the handset 306 through the call circuit unit 305. The general terminal device 400 makes a bell ring by a bell signal. Next, when the general terminal device 400 responds by off-hook, the general terminal device 400 closes the DC loop through the attached subscriber line 203, the relay contact 308, and the subscriber line 202. The DC loop monitoring unit 107 detects the closing of the DC loop of the general terminal device 400, recognizes the incoming call response, and the control unit 101 returns the response data to the key telephone 300 and simultaneously switches the relay contact 109 to the terminal a side. Then, the DC loop monitoring unit 107 and the bell signal generation unit 108 are separated, the bell signal transmission to the general terminal device 400 is stopped, and the general terminal device 400 is stopped. The control unit 301 stops the ringing tone based on the response data, closes the relay contact 307, and enters a call state with the general terminal device 400. Next, when the key telephone 300 goes on-hook first, the control unit 301 sends the on-hook data to the electronic exchange 100 through the data communication line 201, and the control unit 101
Recognizes the end of the call based on the on-hook data, and at the same time returns the response data to the key telephone. Control unit 30
1 indicates that the relay contact 307 is opened by the response data and that the subscriber line 202 is being used by the general terminal device 400,
The other terminal busy display is displayed on the display unit 303. Next, when the general terminal device 400 goes on-hook, the DC loop is opened through the attached subscriber line 203, the relay contact 308, and the subscriber line 202. The DC loop monitoring unit 107 detects that the DC terminal of the general terminal device 400 is open, the control unit 101 recognizes that the call is completely completed, and returns the response data to the key telephone 300. The control unit 301 is
Based on the response data, the display that the subscriber line 202 has been opened and the unused state are displayed on the display unit 303, and at the same time, the subscriber line 202 can be used by the key telephone 300.

Next, when the general terminal device 400 first goes on hook from the call state between the key telephone 300 and the general terminal device 400, the DC loop is opened through the attached subscriber line 203, the relay contact 308, and the subscriber line 202. The DC loop monitoring unit 107 detects the opening of the DC loop of the general terminal device 400, recognizes the end of the call, and returns the response data to the key telephone 300. Control unit 3
01 indicates that the key telephone set 300 is still capturing the subscriber line 202 based on the response data and causes the display unit 303 to display the busy state, and at the same time opens the relay contact 308 to use the general terminal device 400. Make it impossible.

Next, when the key telephone set 300 is on-hook, the control unit 301 sends on-hook data to the electronic exchange 100 through the data communication line 201. When the electronic exchange 100 receives the on-hook data, it recognizes that the call is completely completed, and the call-back control unit 10
1 returns the response data to the key telephone 300. Control unit 30
1 is a general terminal device that opens the relay contact 307 and closes the relay contact 308 at the same time as displaying the fact that the subscriber line 202 has been opened and displaying the unused state on the display unit 303 based on the response data. 400 is ready for use.

FIG. 5 is a sequence flow when the key telephone 300 is connected to the electronic exchange 100, the general terminal 400 is in contact with the key telephone, the general terminal 400 makes a call, and the key telephone 300 receives the call. General terminal 400
Off hook, attached subscriber line 203, relay contact 30
8. Close the DC loop through the subscriber line 202. The DC loop monitoring unit 107 detects the closing of the DC loop, and the control unit 1
01 recognizes the calling state of the general terminal device 400 and returns response data to the key telephone 300. Based on the response data, the control unit 301 causes the display unit 303 to display an indication that the subscriber line 202 has been captured by the general terminal device 400 while the other end is not used, and disables the key telephone 300. Next, when the general terminal device 400 dials to call the key telephone, the dial signal is the attached subscriber line 203 and relay contact 30.
8, sent to the electronic exchange 100 through the subscriber line 202.
In the electronic exchange 100, if the dial signal from the general terminal device 400 is a DTMF signal, the DTMF receiving unit 106 receives it. If the dial signal is a pulse dial signal, a DC loop open / close signal is set as a DC signal. The loop monitoring unit 107 receives the call, the caller enters the calling state, the control unit 101 sends the incoming call data to the key telephone 300, and the audible sound generating unit 111.
From the call path section 104, subscriber circuit section 105, relay contact 10
9, DC loop monitoring unit 107, subscriber line 202, relay contact 30
8. Send a ringing tone to the general terminal device 400 through the attached subscriber line 203 and have the ringing tone heard. The control unit 301 causes the display unit 303 to display an incoming call according to the information of the incoming call data. Next, when the key telephone 300 goes off-hook, the control unit 301 sends off-hook data to the data communication line 201. Upon receiving the off-hook data from the key telephone set 300, the control unit 101 recognizes that the key telephone set 300 has answered the incoming call, returns the response data to that effect to the key telephone set, and at the same time, is sent from the audible sound generation section 111. Stop the ringing signal. Upon receiving the response data, the control unit 301 stops the incoming call display on the display unit and at the same time closes the relay contact 307 to establish a call state with the general terminal device 400. After that, the sequence for ending the call end state is the same as the sequence flow of 760 and 770 in FIG. Sixth
FIG. 7, FIG. 8, FIG. 9 and FIG. 9 are flowcharts of the control unit 101 showing the incoming and outgoing processing of the extension line of the electronic exchange 100.

Step 901 in FIG. 6 is a determination step when there is an incoming call from another extension line or an outside line. If there is no incoming call in the electronic exchange 100, the next step 902 is executed, and if there is an incoming call, Go to step 960 in FIG. Control unit 101
In step 902, the off-hook data of the key telephone set 300 is detected by receiving the off-hook data transmitted through the data communication line 201. If the off-hook data is not received, the next step 903 is executed, and the off-hook data is received. Step 920 of FIG. 7 is executed. In step 903, the control unit 101 captures the subscriber line 202 through the attached subscriber line 203 and the relay contact 308 by the general terminal device 400 connected to the attached subscriber line 203, and the DC loop monitoring unit
This is the step of detecting that the DC loop is closed at 107. If the loop is closed, the next step 90
Execute 4 and if the loop is not closed, step 9
Return to 01. This Step 901, Step 902, Step 90
The repetition of step 3 and step 901 shows the standby state of the extension. In step 904, when the control unit 101 detects the DC loop closure of the general terminal device 400 in step 903, the general terminal device 400 sends the subscriber line 202 to the key telephone 300.
Is sent out the response data to the effect that it is in use. In step 905, the DTMF receiving unit 106 is connected to the call path unit 104,
The DTMF dial signal sent from the general terminal device 400 is passed through the attached subscriber line 203, relay contact 308, subscriber line 202, DC loop monitoring unit 107, relay contact 109, subscriber circuit unit 105, and call path unit 104 to DTMF. The receiving unit 106 prepares for reception. Further, the DC loop monitoring unit 107 is provided so that the pulse dial sent from the general terminal device 400 can be received.
Is a step of preparing for the pulse dial receivable state. In step 906, it is a step of determining the confirmation of reception of the dial signal transmitted from the general terminal device 400. If the dial signal is not confirmed, step 906 is repeated, and if confirmed, the process proceeds to the next step 907. Step 907 is a step of determining whether to call the button telephone 300 of the same extension. If another extension is called, the process proceeds to step 908 and the other party is called and the button telephone 300 of the same extension is called.
In the case of calling, the process proceeds to step 911 and the incoming data is sent to the key telephone 300 of the same extension. Step 909 is a step of judging whether or not the other party responds when calling another extension. When the other party answers, the procedure proceeds to step 968 of FIG. 9 to establish the other party's connection, and if no response, the next step
Then, the process shifts to 910, and abandonment of the calling of the other party is detected by opening the DC loop of the general terminal device 400. If the DC loop remains closed in step 910. By repeating step 908, step 909, step 910, step 908, ..., The call waiting response state is entered. When the opening of the DC loop is detected in step 910, it is considered that the calling of the other party of the general terminal device 400 is abandoned, and the process proceeds to step 914, and the response data indicating that the subscriber line 202 is opened is sent to the key telephone 300. After step 914 of sending the response data, the process returns to step 901 to enter the standby state. In step 911, the incoming data is sent to the key telephone 300 of the same extension to call. In step 912, it is a step of determining whether or not the key telephone set 300 being called has answered by off-hook, and by judging by receiving off-hook data, and if it remains on-hook, the process proceeds to the next step 913.
When the response is made by off-hook, the process proceeds to step 940 in FIG. In step 913, similarly to step 910, it is determined whether the call is abandoned by opening the DC loop of the general terminal device 400, and if the DC loop remains closed, step 911, step 912, step 913, step 911, ...
・ Repeatedly, when the DC loop is opened, step 914
After that, it goes into a standby state.

Step 920 of FIG. 7 is the button telephone of step 902.
This is a step executed by receiving the off-hook data of 300, in which the key telephone 300 sends response data indicating that the subscriber line 202 can be used, closes the relay contact 307, and opens the relay contact 308. Button telephone 300
The use of the subscriber line 202 of the general terminal device 400 is enabled and the use of the subscriber line 202 of the general terminal device 400 is prohibited. In step 922, preparations are made for receiving dial data from the key telephone 300 through the data communication line 201. At step 923, the received dial data is decided to be decided, and until it is decided, step 923
If the call target is another extension or the general terminal device 400 within the same extension, the process moves to the next step 924.
If it is a call to another extension, the call is made to the other party in step 925, and it may be a call to the general terminal device 400 in the same extension. For example, in step 929, response data indicating that the general terminal device 400 connected to the attached subscriber line 203 is an incoming call is sent to the key telephone set 300, and the relay contact 307 is opened and the relay contact 308 is closed. After the connection, the preparation for the bell signal transmission to the general terminal device 400 in the next step 930. In step 926, it is determined whether or not there is a response from the calling party in step 925. If the call is answered, the process proceeds to step 973 in FIG. 9, and if there is no response, the process proceeds to the next step 927 and the key telephone set. Make 300 on-hook call abandonment decisions. If no on-hook data was received in step 927, step 925, step 926,
When steps 927, ... Are repeated and on-hook data is received, it is considered that the call is abandoned, and the next step 92
At 8, the response data indicating that the subscriber line 202 is opened is sent to the key telephone 300, and the relay contact 307 is opened and
Close the relay contact 308. After that, the process shifts to step 901 in FIG. 6 to enter the standby state. In step 930, the relay contact 109 is connected to the terminal b side, and the bell signal generated by the bell signal generator 108 is applied to the relay contact 109 and the DC loop monitor 1
It is sent to the general terminal device 400 through 07, the subscriber line 202, the relay contact 308, and the attached subscriber line 203. Step 912
Then, the general terminal device 400 determines whether or not the DC loop for response is closed, and if the DC loop is closed, the process proceeds to step 941 in FIG. 8 and the DC loop is still closed. For example, the process proceeds to the next step 932, and it is determined whether the key telephone 300 is abandoned by the on-hook call. When the on-hook data is not recognized in step 932, the process proceeds to step 930, and steps 930, 931, 932, 930, ... Are repeated. Step 93
Upon recognizing the on-hook in 2, in the next step 933, response data indicating that the subscriber line 202 is opened is transmitted,
Then, it shifts to a standby state.

In step 940 in FIG. 8, the general terminal device 4 responds to the off-hook response of the key telephone 300 in step 912.
00 and the response data indicating that the call state is established, the relay contact 307 is closed, the subscriber line 202 is captured, and the call state using the subscriber line 202 between the general terminal device 400 and the key telephone 300 is set. Become. Next, in step 943, the termination determination is performed by the on-hook of the key telephone set 300. If the on-hook data is received, the process proceeds to step 950. If the on-hook data is not received, the process proceeds to the next step 944, and the general terminal The termination of the call is determined by opening the DC loop of the device 400. When the open of the DC loop is not detected in step 944, the process proceeds to step 943, and step 94
When step 3, step 944, step 943, ... Are repeated to detect the opening of the DC loop, in step 945 the response data indicating that the general terminal device 400 has terminated the call is sent to the key telephone 300. The relay contact 308 is opened to disconnect the general terminal device 400 from the subscriber line 202. After that, in step 947, it is determined whether or not the on-hook data of the key telephone set 300 is received, and if it is still off-hook, step 947 is repeated, and when on-hook data is received, in step 948, a response indicating that the subscriber line 202 is released is sent. Data is sent to the key telephone 300, and the relay contact 307 is opened and the relay contact 308 is closed. After that, the process shifts to step 901 and enters the standby state. In step 950, by confirming the on-hook state of the key telephone set 300 in step 943, the general terminal device 400 sends the response data indicating that the subscriber line 202 is still being captured, opens the relay contact 307, and the key telephone set. 300 is disconnected from subscriber line 202. In the next step 952, the end call is detected by opening the DC loop of the general terminal device 400, and if the general terminal device 400 is still closed in the DC loop, repeat step 952 and open the DC loop to step 953. Then, after transmitting the response data indicating that the subscriber line 202 is opened to the key telephone 300, the process proceeds to step 901 to enter the standby state.

If it is determined in step 901 in FIG. 6 that there is an incoming call, in step 960 in FIG. 9 it is determined again whether there is an incoming call. The incoming call determination in step 960 is a step for returning to the standby state by shifting to step 901 in FIG. 6 when there is no incoming call. In step 961, it is determined whether or not an incoming call has been made to the key telephone set 300. If an incoming call has been made to the key telephone set 300, steps 962 and 963 are executed. 962, Step 963 is not executed. Button phone 30 in step 962
Send incoming data to 0. Further, step 963 is a step of determining whether or not an off-hook response to the incoming call to the key telephone set 300 has been made. When the off-hook data is received, the process proceeds to step 972, and if the off-hook data is not received, the next step is performed. Go to step 964. Step 964 is the button telephone 300
Is a step of determining whether there is an incoming call to the general terminal device 400 connected to the auxiliary subscriber 203 of
If an incoming call has occurred in the general terminal device 400, the following steps 965 and 966 are executed, and if no incoming call has occurred, step 965 and step 966 are not executed and step 960
Return to and determine whether the incoming call is continuing. In step 965, a bell signal is transmitted to the general terminal device 400. Further, in step 966, the response due to the DC loop closure of the general terminal device 400 is determined, and if the DC loop closure is performed, the process proceeds to step 967. If the DC loop closure is not performed, the process returns to step 960. , Step 960,
Step 961, Step 962, Step 963, Step 96
4. In each step of step 965 and step 966, response monitoring during incoming call is performed. In step 967, the general terminal device 400
Responds to the key telephone 300 and sends the response data which already occupies the subscriber line 202. In step 968,
Connect to the other party who is receiving a call and put it in a call state. In step 969, the DC loop open of the general terminal device 400 during the call is detected, and the termination of the call is determined. In step 969, if the DC loop is not opened, step 969 is repeated, and if the opening of the DC loop is detected, in step 970, the other party who has been talking is released. .
In step 971, the subscriber line 202 to the key telephone 300
Is sent out, and then the process returns to step 901 in FIG. 6 to enter the standby state. Step 972
Is executed when the key telephone 300 responds by going off-hook in step 963, the response data indicating that the telephone call is possible is sent to the key telephone 300, and the relay contact 307 is closed and the relay contact 308 is opened. Then, the use of the subscriber line 202 of the general terminal device 400 is prohibited. In step 974, the termination determination is made by the on-hook of the key telephone set 300. If it is not on-hook, step 97
Repeat 4 and if on-hook, next step 975
Then, the other party who has been talking is released. In step 976, the response data indicating that the call has been terminated is sent to the key telephone 300, the relay contact 307 is opened and the relay contact 308 is closed, and the key telephone 300 sets the subscriber line 20.
Open 2. After that, the process returns to step 901 to enter the standby state.

FIG. 10, FIG. 11 and FIG. 12 are flowcharts of the button telephone 300.

First, step 1001 is a step of determining whether or not incoming data is received from the electronic exchange 100. If not, the process proceeds to the next step 1002, and whether or not the key telephone 300 itself goes off-hook. Is determined. If you are still on hook in step 1002,
Going to the next step 1003, it is determined whether or not the general terminal device 400 has received response data indicating that it is off-hook, and if it is still on-hook, the process returns to step 1001.
Step 1001, Step 1002, Step 1003, Step
1001 ... is repeated, and the extension waits.

By the way, when the off-hook of the general terminal device 400 is recognized in step 1003, in the next step 1004, the display unit is displayed.
The general terminal device busy display is displayed on 303, and the general terminal device 400 is displayed.
Enters a call state with the other party who is receiving the call. Then, step
In 1005, it is determined whether or not the response data indicating that the general terminal device 400 is on-hook is received, and if the response data is not received yet, the process is repeated until step 1005 is received, and the call waiting by on-hook is waited. And then
In step 1005, when the response data is received, the process proceeds to the next step 1006, the subscriber line unused display is displayed on the display unit 303, and then the process returns to step 1001 to enter the extension waiting state. When the key telephone set 300 is hooked on in step 1002, off-hook data is sent to the electronic exchange 100. After that, in step 1008, the electronic exchange 100 determines whether or not the response data indicating that the off-hook of the key telephone set 300 has been recognized is received, and if not received, step 1008 is repeated to enter the response data reception waiting state. . When the response data is received in step 1008, the relay contact 307 is closed in the next step 1009,
By connecting the call circuit unit 305 of the button telephone 300 to the subscriber line 202 via the capacitor 310, opening the relay contact 308, and opening the auxiliary subscriber line 203 and the subscriber line 202, a general terminal The device 400 is disabled. Then, in step 1010, the display unit 303 displays that the device is in use. Next, in steps 1030 and 1031, it is determined that the dial button is pressed and the outgoing call is abandoned due to on-hook. If the dial button is not pressed on-hook, the steps 1030 and 1010 are performed.
31 and step 1030 ... are repeated. When the dial button is pressed in step 1031, the pressed dial data is transmitted to electronic exchange 100 in step 1032. Then, in step 1033, it is determined whether or not the response data indicating that the dial data is recognized is received, and step 1033 is repeated until the response data is received. Then, in step 1033, when the response data is received, in step 1034, according to the information of the response data,
It is determined whether the extension is another extension or the general terminal device 400 connected to the attached subscriber line 203, and if the called party is the general terminal device 400, the next step 1035 is executed, If the called party is not the general terminal device 400, the process jumps to step 1043. Step 10
At 35, the relay contact 307 is opened to disconnect the call circuit unit 305 inside the key telephone 300 from the subscriber line 202, and the relay contact 308 is closed, so that the general terminal device 400 is connected to the electronic exchange 100. Thus, the bell signal can be transmitted via the subscriber line 202. Next Step 10
At 36, the audible sound generating unit 309 inside the key telephone 300 is driven, and the ringing tone is sent to the handset 306 through the communication circuit unit 305. Then, in step 1037, it is determined whether the other party's call is abandoned by on-hook. If it remains off-hook, in step 1038 it is determined whether or not the response data indicating that the general terminal device 400 has gone off-hook and responded is received. If no data is received, the process returns to step 1036, and the call is abandoned until the call is answered or the call is answered by step 1036.
36, Step 1037, Step 1038, Step 1036, ...
·repeat. By the way, when the response data is received in step 1038, the relay contact 307 is closed in the next step 1039, the subscriber line 202 and the attached subscriber line 203 are connected, and the general terminal device 400 and the key telephone 300 are connected. If possible to talk to. Next, in step 1040 and step 1041, the end call is detected by the on-hook of the key telephone 300 during the call or the on-hook of the general terminal device 400. Step 104
When the response data indicating that the on-hook of the general terminal device 400 is recognized is not received in step 1, step 1040, step
Repeat Step 1041, Step 1040, ... And continue the call end detection. When the response data is received in step 1041, the relay contact 308 is opened in step 1042, the subscriber line 202 and the attached subscriber line 203 are disconnected, and the general terminal device 400 is connected to the subscriber line 202. Separate more. Next step
At 1043, it is determined whether the key telephone set 300 is on-hook, and if it is still off-hook, step 10
When 43 is repeated and the device is on-hook, the process proceeds to step 1061 to send the on-hook data to the electronic exchange 100. Next, in step 1062, it is determined whether or not the response data indicating that the on-hook data has been recognized is received, and if not received, step 1063 is repeated to wait for reception. When the response data is received in step 1063, the process proceeds to step 1063, the relay contact 307 is opened, and the relay contact 3
08 is closed and the subscriber line 202 is put in a standby state. continue,
In step 1006, a display indicating that the subscriber line is not in use is displayed, and then the process returns to step 1001 to enter the extension waiting state. By the way, when the on-hook of the key telephone 300 is recognized during the on-hook determination in the waiting state where the dial button is pressed in step 1030, the process proceeds to step 1061, and after the steps 1061, 1062, 1063, and 1006, the extension waiting state is established. Move to. The same applies to the on-hook for abandoning the calling of the other party in step 1037. By the way, at the time of ending the call by the on-hook of the key telephone set 300 in step 1040, the process proceeds to step 1064, the on-hook data is sent to the electronic exchange 100, and the step 106
In step 5, the response data indicating that the on-hook data has been recognized is waited for, and if not received, step 1065 is repeated until it is received. Then, in step 1065,
When the response data is received, the relay contact 307 is opened in step 1066, and the key telephone 300 from the subscriber line 202 is opened.
Disconnect. Subsequently, in step 1067, the general terminal device busy display is displayed on the display unit 303, and in step 1068, until the response data indicating that the general terminal device 400 is on-hook is received, the response data reception waiting in step 1068 is waited. Continue the state. When the response data is received in step 1068, the process shifts to step 1006 to display the subscriber line unused state, and then shifts to the extension waiting state. By the way, step 10
When the incoming data reception is recognized in 01, step 1011
Then, it is determined whether the key telephone 300 is off-hook, and if it is still on-hook, in the next step 1012, it is determined whether the electronic exchange 100 has recognized the response data indicating that the general terminal device 400 is off-hook. In step 1012, if the response data is not received, the process returns to step 1001, and the steps 1001, 1011, 1012, and 1010 are performed.
Repeat 01, ... to continue incoming call judgment and off-hook judgment. When the off-hook for the incoming call of the general terminal device 400 is recognized in step 1012, the process proceeds to step 1004, steps 1004, 1005, and 1006 are executed, and then the extension waiting state is entered.

By the way, when the off-hook of the key telephone set 300 is recognized in step 1011, the process moves to the next step 1013 and the off-hook data is transmitted to the electronic exchange 100.
Thereafter, in step 1014, the electronic exchange 100 determines whether or not the response data indicating that the off-hook data has been recognized is received,
If not yet received, repeat step 1014,
The system waits for the response data to be received. Then step 10
In 14, when the response data is received, in the next step 1015, it is determined whether or not the incoming call is from the general terminal device 400 of the same extension according to the information included in the incoming call data.
If the incoming call is from the general terminal device 400 of the same extension,
In step 1039, the relay contact 307 is closed and the telephone call between the key telephone 300 and the general terminal device 400 is established. After that, the call ends and the extension standby state is entered. In step 1015, if the incoming call is not from the general terminal device 400 of the same extension, the process proceeds to the next step 1016, the relay contact 307 is closed, the key telephone 300 is connected to the subscriber line 202, and the relay is performed. The contact point 308 is opened to prohibit the use of the subscriber line 202 of the general terminal device 400. Then, in step 1017,
A display indicating that the device itself is being used is displayed on the display unit 303, and a call is established.
Next, the routine proceeds to step 1043, where after the termination determination is made by the on-hook of the key telephone 300, the routine shifts to the extension waiting state.

EFFECTS OF THE INVENTION As can be understood from the above description, the telephone device of the present invention does not need an exchange for designating or determining the attributes of terminals, but can be connected to an exchange that has been generally used in the past, such as a button telephone and a facsimile. Switch to and connect to a general terminal. Further, since it is not necessary to specify the attribute of the calling terminal at the time of calling, it is possible to obtain an effect that it is suitable not only for a specific configuration but also for connection of a general public line.
Further, since the general terminal is disconnected from the communication line during use, it does not interfere with the communication of the general terminal. Furthermore,
Since the key telephone set to which the general terminal such as a facsimile is subordinately connected is connected to the exchange, the adapter and the dedicated port which are required when the general terminal and the exchange are independently connected are unnecessary.

[Brief description of drawings]

FIG. 1 is a block diagram showing a state in which an electronic exchange is connected to a key telephone in one embodiment of the telephone device of the present invention, and FIGS. 2 to 5 show a key telephone in one embodiment of the telephone device of the present invention. A sequence flow of the electronic exchange and the general terminal device, FIGS. 6 to 9 are flowcharts at the time of calling and receiving of the electronic exchange to which the key telephone in the embodiment of the telephone device of the present invention is connected, from FIG. FIG. 12 is a flowchart at the time of making and receiving a key telephone in the embodiment of the telephone device of the present invention. 100 ... Electronic exchange, 101 ... Control section 102 ... Data communication section 103 ... Station line trunk section 104 ... Call path section 105 ... Subscriber circuit section 106 ... DTMF receiving section 107 ... DC loop monitoring section 108 …… Bell signal generator 109 …… Relay contact 110 …… Subscriber interface section 111 …… Audible sound generator 201 …… Data communication line 202 …… Subscriber line 203 …… Attached subscriber line 204 …… Station line 300 …… Button telephone 301 …… Control unit 302 …… Data communication unit 303 …… Display unit, 304 …… Operating unit 305 …… Call circuit unit, 306 …… Handset 307 …… Relay contact 308 …… Relay contact 309… … Audible sound generator 400 …… General terminal equipment

Claims (1)

(57) [Claims] 1. A telephone device comprising an exchange, a key telephone, and a general terminal, wherein the exchange includes a communication line connected to an external line, and a DC loop monitoring means for detecting a hook state of the general terminal. A first control means for outputting to the first data communication means a control signal according to the hook state detected by the DC loop monitoring means, and a first control signal for outputting the control signal output by the first control means. Data communication means, the button telephone, a call circuit means for managing a voice call,
The second data communication means for receiving the control signal by being connected to the first data communication means of the exchange, and usually the general terminal and the communication line of the exchange are connected to each other, and off-hook of the key telephone. Accordingly, the relay terminal for switching the general terminal to the call circuit means and connecting to the call line of the exchange, and the second switch for controlling the switching of the relay contact based on the control signal received by the second data communication means. The control means of the general terminal is subordinately connected to the button telephone, is connected to the call line of the exchange through the relay contact of the button telephone, the DC loop monitoring means of the exchange of the button telephone When the off-hook of the general terminal is detected via the relay contact, the first control means sends a control signal via the data communication unit, When the second data communication means receives the control signal from the data communication means of the exchange, the second control means prohibits the relay contact from connecting the call circuit means to the call line of the exchange. Telephone device.