JP3624962B2 - System phone - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a system telephone having a main connection device and a plurality of terminal devices, wherein the terminal device is provided with a receiving voice amplifying means, and an internal communication method thereof.
[0002]
[Prior art]
Conventionally, as a system phone, a main connection device connected to a telephone line and a plurality of terminal devices connected to the main connection device are provided, and between the main connection device and each terminal device and between terminal devices. An extension call is possible, and the main connection device and the terminal device include a receiving voice enhancement means.
[0003]
Such a system telephone has the following functions. That is, when the received telephone line is transferred to another terminal apparatus or main connection apparatus, the line is put on hold and a melody or other standby signal is transmitted to the other party, and then the other terminal apparatus or main connection apparatus is transmitted. Set the connected device to the receiving voice amplification state. Then, by talking to the handset, an announcement such as “... san, call from outside line”, the other terminal device or the main connection device's receiver speaker utters the announcement. I had the function to tell you ...
[0004]
In addition, when using telephone services such as hourly reports and weather forecasts, not only the caller but also people around the phone can be audible by using the received voice enhancement means. The phone information was heard.
[0005]
[Problems to be solved by the invention]
Nowadays, various information services using a telephone line have been provided in telephone companies. Among such information service programs, there are service programs for transmitting music through a telephone line. In order to listen to such a service program with the above-described system telephone, the following operation is performed. That is, first, any main connection device or terminal device connects a telephone to a service destination, and then the other terminal device or main connection device that wishes to listen to the service program has a connection to the main connection device. Or, a call interruption operation is performed on the terminal device, and the service program described above is listened to in this way.
[0006]
However, such an operation is very complicated, and therefore, improvement in operability has been demanded.
[0007]
Accordingly, an object of the present invention is to improve the operability by setting all the terminal devices to the receiving voice amplifying state at once.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, in the first invention of the present invention, a main connection device connected to a telephone line and a plurality of terminal devices connected to the main connection device are provided. Between terminal devicesCan communicate,The main connection device and the terminal device have the following characteristics in a system telephone having a reception voice amplifying means.
[0009]
That is, in the first invention, a system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device, wherein the main control device includes a handset, A line interface connected to the telephone line, a changeover switch for switching the incoming voice on the telephone line to an ear speaker or a loudspeaker, a crosspoint switch for connecting the telephone line and each terminal device so that a call can be made, and each terminal device A terminal interface for transmitting and receiving a voice signal or a control signal, a voice designation operation means for designating a terminal apparatus to be set in a voice reception voice enhancement state, and a voice command signal for setting the terminal apparatus designated by the voice designation means to a voice reception voice loudness state in the terminal Means for outputting to the device, a hook switch for detecting whether the handset is lifted, and the hand It is detected by the hook switch that the set has been lifted, and the changeover switch is switched by the crosspoint switch in response to capturing the line from the line interface, and the telephone line and the handset are connected via the line interface. Means for forming a call path, and each of the terminal devices receives the voice command signal and puts the terminal device in a received voice loudspeaker state.And in the received voice amplifying state, a voice signal from the telephone line is given to the receiver loudspeaker of the terminal device via the main control device.
[0010]
According to a second aspect of the present invention, there is provided a system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device, wherein each of the terminal devices is a voice command signal Receiving the voice signal in the received voice amplification state, the voice designation operation means for designating the terminal device to be set in the voice voice enhancement state, and the voice designation signal indicating the terminal device designated by the voice designation operation means. A designation signal transmission means to be sent to the control device,In the received voice amplification state, a voice signal from the telephone line is given to the receiver loudspeaker of the terminal device via the main control unit,The main control device connects the handset, a line interface connected to the telephone line, a changeover switch for switching the incoming voice of the telephone line to an ear speaker or a loudspeaker, and the telephone line and each terminal device so as to be able to talk. A cross-point switch; a terminal interface for transmitting / receiving voice signals or control signals to / from each terminal apparatus; a loudspeak designation operating means for designating a terminal apparatus to be in a voice-speech-enhanced state; A means for outputting a loudspeak command signal to make a loud state to the terminal device, a hook switch for detecting whether or not the handset has been lifted, and the fact that the handset has been lifted is detected by the hook switch and is connected to the line from the line interface. When the crosspoint switch is And a means for switching the changeover switch to form a call path between the telephone line and the handset via the line interface.
[0011]
According to a third aspect of the present invention, there is provided a system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device, wherein the terminal device is in a received voice amplification state. And a designation signal transmitting means for sending a loudness designation signal indicating the main control device designated by the loudness designation operation means to the main control device, The control device consists of a handset, a line interface connected to the telephone line, a changeover switch for switching the incoming voice of the telephone line to an ear speaker or a loudspeaker, and a crosspoint for connecting the telephone line and each terminal device so that a call can be made. A switch, a terminal interface for transmitting / receiving audio signals or control signals to / from each terminal device, and whether or not the handset is lifted And when the loudspeaker designation signal designates a main connection device, in response to detecting that the handset has been lifted by the hook switch and capturing a line from the line interface, The changeover switch is switched by the crosspoint switch, the telephone line and the line via the line interface.Receiver speakerAnd a means for forming a telephone call path.
[0012]
According to the present invention, the loudspeak designation operation means designates the terminal device or the main connection device to be set in the reception loudness state, and the designation signal transmission means sends the loudness designation signal indicating the designated terminal device or main connection device to the main connection device. Send. Then, the main connection device is the terminal device designated by the loudness designation signal.Or main connection deviceThe voice terminal command is sent to the terminal device after transmitting the voice command signal to turn the voice signal into the loudspeaker state.Or main connection deviceWill utter loud speech.
[0014]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a block diagram illustrating a configuration of a main connection device of a system telephone according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a configuration of a terminal device of the system telephone. This system telephone is configured by connecting two terminal devices 2A and 2B to one main connection device.
[0016]
The main connection device 1 controls the telephone line 3 and each terminal by controlling the line interface 4 that performs line capture, line opening, and dial output operations on the telephone line 3 and the switches 5a to 5p. A crosspoint switch 5 for connecting the devices 2A and 2B or the terminal devices 2A and 2B so as to be able to talk to each other, and terminal interfaces 6A and 6B for transmitting and receiving audio signals or control signals to and from the terminal devices 2A and 2B are provided. .
[0017]
Further, the main connection device 1 includes a handset 7 and a reception speaker 8. The handset 7 includes an ear speaker 7a and a microphone 7b. The handset 7 and the receiver loudspeaker 8 are connected to the telephone line 3 via a crosspoint switch 5, and a changeover switch 9 is interposed between the ear speaker 7 a and the receiver loudspeaker 8 and the crosspoint switch 5. Has been. The change-over switch 9 performs an operation of switching the received voice of the telephone line 3 from the ear speaker 7a to the receiver loudspeaker 8. The change-over switch 9 connects the earphone 8 to the telephone line 3 at the switching end 9a, and connects the ear speaker 7a to the telephone line 3 at the switching end 9b.
[0018]
In addition, the main connection device 1 detects an incoming call detection unit 10 that detects that the line interface 4 has received an incoming call, a key matrix 11 that specifies a dial, an extension number, and a reception loudness state, and a placement / pickup state of the handset 7. A hook switch 12, a buzzer 13 for sounding a ring tone, and a control unit 14 that includes a CPU, a ROM, a RAM, an I / O, and the like and controls the main connection device 1 as a whole. The key matrix 11 includes a reception key 11a for designating ON / OFF of the reception voice enhancement state, another reception key 11b for designating the terminal devices 2A and 2B to the reception voice enhancement state, and a dial key 11c.
[0019]
The terminal devices 2A and 2B are terminal interfaces of the main connection device 1.6A, 6BAnd a terminal interface 20 for transmitting and receiving control signals and voice signals such as line capture, line opening, dial output, etc., and a handset 21 and a receiver loudspeaker 22. The handset 21 includes an ear speaker 21a and a microphone 21b. The handset 21 and the receiver speaker 22 are connected to the terminal interface 20 via the changeover switch 24. The changeover switch 24 is configured to connect the loudspeaker 22 to the terminal interface 20 at the switching end 24a, and to connect the ear speaker 21a to the terminal interface 20 at the switching end 24b.
[0020]
The terminal devices 2A and 2B also include a key matrix 25 for designating dials, extension numbers, and a reception loudness state, a hook switch 26 for detecting the placement / pickup state of the handset 21, a buzzer 27 for ringing, and a CPU. , ROM, RAM, I / O, and the like, and a control unit 28 that controls the entire terminal devices 2A and 2B. The key matrix 25 includes a reception key 25a for designating ON / OFF of the reception voice enhancement state, another reception key 25b for designating the terminal devices 2A and 2B to the reception voice enhancement state, and a dial key 25c.
[0021]
Next, use this system phonehandThe order will be explained. First, an operation procedure for placing the terminals 2A and 2B in the receiving voice amplifying state after making a call with the main connection device 1 will be described with reference to FIGS. 3 and 4 are flowcharts showing an operation procedure of the main connection device 1 during an external line call, and FIG. 5 is a flowchart showing an operation procedure of the terminal devices 2A and 2B at the time described above.
[0022]
First, it is checked with the hook switch 12 whether or not the handset 7 of the main connection device 1 has been lifted (S1). If it is found that the handset 7 is lifted, the line is captured from the line interface 4 and the main connection device 1 is put into a state suitable for handset call (hereinafter referred to as handset mode) (S2). Specifically, by turning on the switches 5b and 5e of the crosspoint switch 5 and switching the changeover switch 9 to the switching end 9b side, a call path between the telephone line 3 and the handset 7 is formed. If the handset 7 is not lifted, the flowchart is ended and the operation is finished.
[0023]
After the handset mode is set, it is checked whether or not the handset mode is set (S3). If it is found in S3 that the handset mode is set, the hook switch 12 checks whether or not the handset 7 remains lifted (S4).
[0024]
When it is found that the handset 7 remains lifted, it is checked whether or not the reception key 11a of the key matrix 11 is turned on (S5). When it is found that the reception key 11a is turned on, the main connection device 1 is put into a state suitable for reception voice expansion (hereinafter referred to as reception mode) (S6). Specifically, the switch 5b of the crosspoint switch 5 is turned on while the switch 5e is turned off. Further, by switching the changeover switch 9 to the changeover end 9a side, a line path between the telephone line 3 and the receiving loudspeaker 8 is formed. Then, after the operation of S6 is completed, the process proceeds to an operation (S7) for checking whether or not the dial key 11c of the key matrix 11 has been input.
[0025]
In S4, if it is found that the handset 7 has been lowered by checking the hook switch 12, the telephone line 3 is released by the line interface 4, while all the crosspoint switches 5 are turned OFF, and further the incoming calls from the terminal interfaces 6A and 6B. After sending the end signal s1 to the terminal devices 2A and 2B (S20), the series of operations (flow chart) is ended.
[0026]
If it is determined in S5 that the reception key 11a is not turned ON, the operation for checking whether or not the dial key 11c of the key matrix 11 is input without setting the main connection device 1 in the reception mode (S7). Transition.
[0027]
On the other hand, if it is determined in S3 that the handset mode is not set, i.e., that the receiving mode is set, whether or not the receiving key 11a of the key matrix 11 is turned on without checking the lifting of the handset 7. (S8), if it is found that the reception key 11a is turned on, the main connection device 1 is set to the handset mode (S9). Then, after the operation of S9 is completed, the process proceeds to an operation (S7) for checking whether or not the dial key 11c of the key matrix 11 has been input. If it is found in S8 that the reception key 11a is not turned on, the main connection apparatus 1 is shifted to S7 without entering the above-described handset mode.
[0028]
When it is determined that the dial key 11c has been input in S7, dial processing, that is, after the dial input is output to the telephone line using the line interface 4 (S10), it is checked whether the other receiving key 11b is turned on. The operation proceeds to (S11). If it is determined in S7 that no dial has been input, the process proceeds to S11 without performing dial processing (S10).
[0029]
When it is determined in S11 that the other receiving key 11b is turned on, the operator waits for the number input using the dial key 11c (S12). If the other receiving key 11b is not turned ON, the process returns to S3.
[0030]
The operator inputs a number using the dial key 11c (S12). As a result, “#” is input (S13), “1” is input (S14), “2” is input. (S15) is determined. Note that “#” input means that both the terminal devices 2A and 2B are designated, “1” input means that one terminal device 2A is designated, and “2” input is the other terminal device 2B. Is meant to be specified.
[0031]
When it is found in S13 that the "#" input has been made, the loudspeak command signals s2 and s3 for setting the reception mode to the both terminal devices 2A and 2B via the terminal interfaces 6A and 6B are output. After performing the operations such as turning on the switches 5b, 5c, and 5d of the crosspoint switch 5, turning off the switch 5e, and setting the changeover switch 9 to the changeover end 9a. The signal is output to the receiver loudspeaker 8. The voice signal of the telephone line 3 is output to the terminal devices 2A and 2B via the terminal interfaces 6A and 6B (S16).
[0032]
When it is found that “1” input is performed in S14, the loudspeak command signal s2 is output to the terminal device 2A via the terminal interface 6A. The switches 5b and 5c of the crosspoint switch 5 are turned ON. The switch 5e is turned OFF, the switch 9 is switched to the switching end 9a, and the voice signal of the telephone line 3 is output to the receiver loudspeaker 8. The terminal interface 6A is used. The voice signal of the telephone line 3 is output toward the terminal device 2A (S17).
[0033]
When it is found that “2” input has been performed in S15, the loudspeak command signal s3 is output to the terminal device 2B via the terminal interface 6B. The switches 5b and 5d of the crosspoint switch 5 are turned ON. The switch 5e is turned OFF, the switch 9 is set to the switching end 9a, and the voice signal of the telephone line 3 is output to the receiver loudspeaker 8. The terminal via the terminal interface 6B The voice signal of the telephone line 3 is output toward the device 2B (S18).
[0034]
If it is determined in S13, S14, and S15 that "#", "1", and "2" are not input, the process returns to S3.
[0035]
Further, after the operations of S16, S17, and S18 are performed, the call mode of the main connection device 1 is set to the reception mode (S19), and then the process returns to S3.
[0036]
Next, the operation procedure of each terminal device that has received the reception mode instruction signal issued by the main connection device 1 will be described with reference to the flowchart of FIG.
[0037]
First, it is checked whether or not the loudspeak command signals s2, s3 (see S16, S17, S18) are received (S30). When it is known that the voice command signals s2 and s3 have been received, the terminal devices 2A and 2B are set in the reception mode, and the voice signal of the telephone line 3 sent via the terminal interfaces 6A and 6B is voiced by the voice receiver loudspeaker 22. (S31).
[0038]
Then, it is checked whether or not the reception end signal s1 (see S20) is transmitted from the main connection device 1 while outputting the sound by the reception speaker 22 (S32). When the reception end signal s1 is received, the reception mode is set. Is finished (S33), and a series of operations (flow chart) is finished.
[0039]
If it is determined in S30 that the loudspeak command signals s2 and s3 are not received, the series of operations (flowchart) is immediately terminated without performing the operations described above.
[0040]
Next, the operation procedure for placing the terminal device 2B and the main connection device 1 in the receiving voice amplifying state after making a call with the terminal device 2A will be described with reference to FIG. 6, FIG. 7, FIG. 8, FIG. To do. Since the operation procedure for placing the terminal device 2A and the main connection device 1 in the receiving voice amplifying state after making a call with the terminal device 2B is the same, the description thereof is omitted. FIGS. 6 and 7 are flowcharts showing an operation procedure of the terminal device 2A (the same applies to the terminal device 2B) during an external line call, and FIGS. 8 and 9 are flowcharts showing an operation procedure of the main connection device 1 at that time. .
[0041]
First, it is checked with the hook switch 26 whether or not the handset 21 of the terminal device 2A has been lifted (S40). When it is found that the handset 21 is lifted, an off-hook signal s5 is transmitted to the main connection device 1 via the terminal interface 20, and the terminal device 2A itself is set to the handset mode (S41). Specifically, the changeover switch 24 is switched to the switching end 24 b side to connect the ear talker 21 a of the handset 21 to the terminal interface 20.
[0042]
If the handset 21 is not lifted, the flowchart is ended and the operation is finished.
[0043]
After setting the terminal device 2A to the handset mode, it is checked whether or not the terminal device 2A is in the handset mode (S42). If it is determined in S42 that the handset mode is set, the hook switch 26 checks whether or not the handset 21 remains lifted (S43).
[0044]
If it is found that the handset 21 is lifted, it is checked whether or not the reception key 25a of the key matrix 25 is turned on (S44), and if it is found that the reception key 25a is turned on, the main connection In addition to outputting the reception mode designation signal s6 to the device 1, the terminal device 2A itself is set to the reception mode. That is, by switching the changeover switch 24 to the changeover end 24a side, the terminal interface 20 and the receiving end are received.ExpansionThe voice unit 22 is connected (S45).
[0045]
Then, after the operation of S45 is completed, the process proceeds to an operation (S46) for checking whether or not the dial key 25c of the key matrix 25 has been input.
[0046]
In S43, if it is found that the handset 21 has been lowered by checking the hook switch 26, the terminal interface 20 transmits the reception end designation signal s7 to the main connection device 1 (S59), and then the series of operations (flowchart) is completed. To do.
[0047]
If it is determined in S44 that the reception key 25a is not turned on, the process proceeds to an operation (S46) for checking whether or not the dial key 11c of the key matrix 11 is input without performing the operation in S45.
[0048]
On the other hand, if it is determined in S42 that the handset mode is not set, that is, the receiving mode is set, whether or not the receiving key 25a of the key matrix 25 is turned on without checking the lifting of the handset 21 is checked. Check (S47). If it is found that the reception key 25a is turned on, the handset mode designation signal s8 is output to the main connection device 1, and the terminal device 2A itself is also set to the handset mode. That is, by switching the changeover switch 24 to the changeover end 24b side, the terminal interface 20 and the ear speaker 21a of the handset 21 are connected (S48). Then, after the operation of S48 is completed, the operation proceeds to an operation (S46) for checking whether or not the dial key 25c of the key matrix 25 has been input.
[0049]
If it is determined in S47 that the reception key 25a is not turned on, the process proceeds to an operation (S46) for checking whether or not the dial key 11c of the key matrix 11 is input without performing the operation in S48.
[0050]
If it is determined that the dial key 25c is input in S46, whether or not the other receiving key 25b is turned on after dial processing, that is, the terminal interface 20 is used to output the dial signal s9 to the main connection device 1 (S49). The operation proceeds to an operation for checking (S50). If it is determined in S46 that no dial has been input, the process proceeds to S50 without performing dial processing (S49).
[0051]
If it is found in S50 that the other receiving key 25b is turned on, it waits for the operator to input a number using the dial key 25c (S51). If the other receiving key 25b is not turned ON, the process returns to S42.
[0052]
The operator inputs a number using the dial key 25c (S51). As a result, whether "#" is input (S52), whether "0" is input (S53), "2" "It is determined whether or not an input has been made (S54). Note that “#” input means that both the terminal device 2B and the main connection device 1 are specified, “0” input means that the main connection device 1 is specified, and “2” input is the other terminal device. This means that 2B is designated.
[0053]
When it is found in S52 that the “#” input has been made, the main connection device 1 and the terminal device 2B are designated via the terminal interface 20 so as to enter the reception mode. Operations such as outputting the loud sound designation signal s10 and setting the changeover switch 24 to the changeover end 24a are performed (S55).
[0054]
When it is found that “0” input has been made in S53, a loudspeaking designation signal s11 for designating the main connection device 1 to enter the reception mode is output to the main connection device 1 via the terminal interface 20. The operation of setting the changeover switch 24 to the changeover end 24a is performed (S56).
[0055]
When it is found that “2” input is performed in S54, a loudspeaking designation signal s12 for designating the terminal device 2B to enter the reception mode is output to the main connection device 1 via the terminal interface 20. The operation of setting the changeover switch 24 to the changeover end 24a is performed (S57).
[0056]
If it is determined in S52, S53, and S54 that "#", "0", and "2" are not input, the process returns to S42.
[0057]
Further, after the operations of S55, S56, and S57, the call mode of the terminal device 2A is set to the reception mode (S58), and the process returns to S42.
[0058]
Next, an operation procedure of the main connection device 1 when a call is made on the terminal device 2A will be described.
[0059]
First, it is checked whether or not the off-hook signal s5 (see S41) transmitted by the terminal device 2A has been received (S70), and if it is known that the off-hook signal s5 has been received, the line is captured from the line interface 4 and the main A handset call path is set in the connection device 1. (S71). Specifically, by turning on the switches 5c and 5i of the crosspoint switch 5 and switching the changeover switch 9 to the switching end 9a side, a call path between the telephone line 3, the handset 7 and the terminal interface 6A is formed.
[0060]
If the off-hook signal s5 is not received in S70, this flowchart is ended and the operation is finished.
[0061]
After performing the operation of S71, it is checked whether or not the reception end designation signal s7 (see S59) is received from the terminal device 2A (S72), and if it is found that the reception end designation signal s7 has been received, the line interface 4, the telephone line 3 is released, all the crosspoint switches 5 are turned OFF, and the terminal interface 6B sends a reception end signal s1 to the terminal device 2B (S85), and then a series of operations (flow chart) is ended. .
[0062]
On the other hand, if it is found that the reception end designation signal s7 is not received, it is checked whether or not the handset mode designation signal s8 (see S48) is received from the terminal device 2A (S73), and the handset mode designation signal s8 is received. If received, the switches 5c and 5i of the crosspoint switch 5 are turned on (S74), thereby connecting the main connection device 1 and the terminal device 2A via the terminal interface 6A.
[0063]
If it is found in S73 that the handset mode instruction signal s8 is not received, it is checked whether or not the reception mode designation signal s6 (see S45) is received (S75), and the reception mode designation signal s6 is received. Turns on the switch 5c of the crosspoint switch 5 and turns off the switch 5i (S76), thereby transmitting a voice signal from the main connection device 1 to the terminal device 2A via the terminal interface 6A. The audio signal from 2A is not output to the telephone line 3.
[0064]
If it is found in S75 that the reception mode instruction signal s6 is not received, it is checked whether or not the dial signal s9 (see S49) is received from the terminal device 2A (S77), and if the dial signal s9 is received, The dial signal s9 is output to the telephone line 3 via the line interface 4 (S78).
[0065]
If it is found in S77 that the dial signal s9 is not received, it is checked whether or not the simultaneous loudness designation signal s10 (see S55) is received from the terminal device 2A (S79), and the simultaneous loudness designation signal s10 is received. If it is found, the loudspeak command signal s3 is output to the terminal device 2B via the terminal interface 6B. Further, the switch 5i of the crosspoint switch 5 is turned OFF, while the switches 5b, 5c, and 5d are turned ON, thereby transmitting the voice signal of the telephone line 3 to the terminal devices 2A and 2B. Further, by switching the changeover switch 9 to the changeover end 9a side, an audio signal is output to the receiving speaker 8 (S80).
[0066]
If it is found in S79 that the simultaneous loudspeak designation signal s10 is not received, it is checked whether or not the loudspeak designation signal s11 (see S56) for setting the main connection device 1 in the reception mode is received from the terminal device 2A (S81). ), When it is found that the loudspeak designation signal s11 has been received, the switch 5i of the crosspoint switch 5 is turned off while the switches 5b and 5c are turned on, so that the voice signal of the telephone line 3 is transmitted to the terminal device Send to 2A. Further, by switching the changeover switch 9 to the changeover end 9a side, an audio signal is output to the receiving speaker 8 (S82).
[0067]
If it is found in S81 that the voice designation signal s11 for setting the main connection device 1 in the reception mode is not received, the voice designation signal s12 (see S57) for setting the terminal device 2B in the reception mode is received from the terminal device 2A. It is checked whether or not (S83), and if it is found that the loud sound designation signal s12 has been received, the loud sound command signal s3 is output to the terminal device 2B via the terminal interface 6B. Further, the switch 5i of the crosspoint switch 5 is turned OFF, while the switches 5c and 5d are turned ON, thereby transmitting the voice signal of the telephone line 3 to the terminal devices 2A and 2B (S84). If it is determined in S83 that the loudspeak designation signal s12 is not received, the process returns to S72.
[0068]
Next, an operation procedure of the terminal apparatus 2B after the main connection apparatus 1 receives various loudness designation signals issued by the terminal apparatus 2A will be described.
[0069]
That is, first, it is checked (S30) whether or not the terminal device 2B has received the loudness command signal s3 (see S80 and S84) instructing to enter the reception mode. When it is found that the voice command signal s3 has been received, the terminal device 2B is set in the reception mode, and the voice signal of the telephone line 3 sent via the terminal interface 6B is converted into voice by the voice reception loudspeaker 22 and output. (S31).
[0070]
Then, it is checked whether or not the reception end signal s1 is transmitted from the main connection device 1 while outputting the sound by the reception speaker 22 (S32). When the reception end signal s1 is received, the reception mode is ended. (S33) A series of operations (flow chart) is completed. If it is determined in S30 that the reception mode designation signal s3 is not received, a series of operations (flowchart) is immediately terminated without performing the above-described operations.
[0071]
In the above embodiment, the main connection device 1 and each of the terminal devices 2A and 2B have been described as being wired communication. However, the present invention wirelessly communicates between the main connection device 1 and the terminal devices 2A and 2B. The same can be applied to the system telephone. That is, the present invention can be implemented in a system telephone using a cordless telephone, which is now widely used.
[0072]
【The invention's effect】
As described above, according to the present invention, after calling the main connection device or a program that plays audio information such as music on the terminal device, by operating only the main connection device or the terminal device in a call state, It became possible to listen to these programs with other terminal devices and the main connection device in a state of listening to loudspeakers, and the operability of the system telephone could be improved accordingly.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a main connection device of a system telephone according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a terminal device of the system telephone according to the embodiment.
FIG. 3 is a flowchart of the main connection device in the embodiment, showing the first half of the operation procedure when a call is made on the main connection device.
FIG. 4 is a flowchart of the main connection device in the embodiment, and shows the latter half of the operation procedure when a call is made on the main connection device.
FIG. 5 is a flowchart of the terminal device in the embodiment, and shows an operation procedure when a call is made on the main connection device or a call is made on the other terminal device.
FIG. 6 is a flowchart of the terminal device in the embodiment, and shows the first half of the operation procedure when a call is made on the terminal device.
FIG. 7 is a flowchart of the terminal device in the embodiment, showing the latter half of the operation procedure when a call is made with the terminal device.
FIG. 8 is a flowchart of the main connection device in the embodiment, showing the first half of the operation procedure when a call is made on the terminal device.
FIG. 9 is a flowchart of the main connection device in the embodiment, showing the latter half of the operation procedure when a call is made on the terminal device.
[Explanation of symbols]
1 Main connection device
2A, 2B terminal equipment
14 Control unit
28 Control unit

Claims (3)

A system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device,
The main controller is
A handset,
A line interface connected to the telephone line;
A changeover switch for switching the incoming voice on the telephone line to an ear speaker or a loudspeaker;
A cross-point switch for connecting the telephone line and each terminal device so as to be able to talk,
A terminal interface for transmitting and receiving audio signals or control signals to and from each terminal device;
A loudspeak designation operation means for designating a terminal device to be in a received voice loudness state,
Means for outputting, to the terminal device, a loudspeaking command signal that puts the terminal device designated by the loudspeaking designation unit into a received voice loudness state;
A hook switch for detecting whether the handset is lifted;
It is detected by the hook switch that the handset has been lifted, and the changeover switch is switched by the crosspoint switch in response to capturing the line from the line interface, and a telephone line and the handset are connected via the line interface. Means for forming a call path of
Each terminal device is
Means for receiving the loudspeak command signal and placing the terminal device in a received voice loudspeak state, and in the received voice loudspeak state, from the telephone line to the receiver loudspeaker of the terminal device via the main controller; A system telephone, characterized by being given a voice signal . A system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device,
Each terminal device is
Means for receiving a loudspeak command signal and placing the terminal device in a received voice loudspeak state;
A loudspeak designation operation means for designating a terminal device to be in a received voice loudness state,
A designation signal transmitting means for sending a loudness designation signal indicating the terminal device designated by the loudness designation operation means to the main control device;
In the received voice amplification state, a voice signal from the telephone line is given to the receiver loudspeaker of the terminal device via the main control unit,
The main controller is
A handset,
A line interface connected to the telephone line;
A changeover switch for switching the incoming voice on the telephone line to an ear speaker or a loudspeaker;
A cross-point switch for connecting the telephone line and each terminal device so as to be able to talk,
A terminal interface for transmitting and receiving audio signals or control signals to and from each terminal device;
A loudspeak designation operation means for designating a terminal device to be in a received voice loudness state,
Means for outputting, to the terminal device, a loudspeaking command signal that puts the terminal device designated by the loudspeaking designation unit into a received voice loudness state;
A hook switch for detecting whether the handset is lifted;
When it is detected by the hook switch that the handset is lifted and the line is captured from the line interface, the change-over switch is switched by the crosspoint switch, and a call path between the telephone line and the handset via the line interface And means for forming
The system telephone characterized by comprising. A system telephone comprising a main control device connected to a telephone line and a plurality of terminal devices connected to the main control device,
The terminal device
Loudspeaking operation means for designating a main control device as a device to be in a voice reception loudness state,
A designation signal transmitting means for sending a loudness designation signal indicating the main control device designated by the loudness designation operation means to the main control device;
The main controller is
A handset,
A line interface connected to the telephone line;
A changeover switch for switching the incoming voice on the telephone line to an ear speaker or a loudspeaker;
A cross-point switch for connecting the telephone line and each terminal device so as to be able to talk,
A terminal interface for transmitting and receiving audio signals or control signals to and from each terminal device;
A hook switch for detecting whether the handset is lifted;
When the loudspeak designation signal designates a main connection device, the switching by the crosspoint switch in response to the fact that the handset is lifted and the line is detected from the line interface. Means for switching a switch to form a call path between the telephone line and the receiver loudspeaker via the line interface;
And a system telephone.

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