JP3351607B2 - Intercom equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom apparatus for use in a house extension call.

[0002]

2. Description of the Related Art FIG. 3 shows a configuration of a conventional intercom apparatus. In FIG. 3, reference numeral 101 denotes a main device that controls the entire system, 102 denotes a door phone slave unit,
103, 104, and 105 are communication terminals that are extensions to the main device 101. Reference numeral 106 denotes a control unit which controls the inside of the main device 101, and is connected to the data transmitting / receiving unit 107, the ringing tone transmitting unit 108, and the door phone interface unit 109. 110 is a power supply unit 111 which controls
A quadrature separation unit for supplying power to the communication lines 3 to 105 using the communication line 121, and the power supply unit 111 and the communication line 12
1 connected. A control unit 112 controls the call terminal 103. The control unit 112 includes a data transmission / reception unit 113, a ring tone transmission unit 114, a call amplifier unit 115, and an extension number setting unit 116 for setting an individual extension number of the call terminal 103. It is connected. Reference numeral 117 denotes an orthogonal separation unit for receiving power supplied from the orthogonal separation unit 110 of the main device 101, and creates a power supply inside the communication terminal 103. Reference numeral 118 denotes a speaker connected to the ringing tone transmitting unit 114, and 119 denotes a receiver connected to the communication amplifier unit 115. Reference numeral 120 denotes a hook switch for detecting the state of the receiver 119 of the call terminal 103, and is connected to the control unit 112 through the call amplifier 115. A communication line 121 connects the main apparatus 101 and each of the communication terminals 103 to 105. Note that the call terminals 104 and 105 are also the call terminals 10
3 is provided with the same configuration.

FIG. 4 is a communication sequence showing data exchange in the intercom apparatus. Figure 3 below
The operation of the intercom apparatus will be described with reference to FIG. Note that the call terminals 103, 104, 105
Are given extension numbers 1, 2, and 3, respectively. When a call is received from the intercom slave unit 102, the intercom interface unit 109 detects a call signal and notifies the control unit 106. Control unit 106
Outputs the incoming call command to the communication line 121 via the data transmission / reception unit 107 and activates the ringtone transmission unit 108 to transmit a ringtone to the communication line 121. Each of the call terminals 103 to 105 receives the incoming call command via the data transmission / reception unit 113 and notifies the control unit 112 of the reception command. The control unit 112 activates the ringing tone sending unit 114 and sets the communication line 1
The ringing tone transmitted through the speaker 21 is transmitted to the speaker 11.
8 to notify the operator of the call.

When the operator of the telephone terminal 103 picks up the receiver 119 to answer the call, the hook switch 120 detects off-hook and notifies the control unit 112 that a response operation has been performed. . The control unit 112
A response command (the first response command) corresponding to extension number 1 set in extension number setting section 116 is transmitted to main apparatus 101 via data transmission / reception section 113, and main apparatus 1
01 receives the first response command through the data transmission / reception unit 107, and the control unit 106 recognizes that a response operation has been performed. Next, the control unit 106 connects the communication path with the intercom slave unit 102 to the intercom interface unit 109, and the operator of the communication terminal 103
Makes it possible to talk with the intercom slave unit 102 via the receiver 119 via the.

At the same time, another operator enters the call terminal 104
When the receiver is picked up, the same operation as described above is performed, and a response command (the second response command) corresponding to the extension number 2 set in the extension number setting unit 116 in the telephone terminal 104.
Accordingly, the other operator can also make a call with the intercom slave unit 102 at the same time as the operator of the call terminal 103.

Next, when the operator of the communication terminal 104 ends the call, the information of the hook switch 120 is stored in the main unit 10.
1 is transmitted by the end command (the second end command) corresponding to the extension number 2 set in the extension number setting unit 116, and the main apparatus 101 recognizes that the call terminal 104 has ended the call. Further, the main device 101 is a communication terminal 10
When the operator of No. 3 ends the call, the extension number setting unit 11
6 corresponding to extension number 1 set to 6
Receiving the end call command), it recognizes that all calls have ended, and
Causes the intercom interface unit 109 to open the passage to the intercom slave unit 102, and ends the call operation.

As described above, in the conventional interface device, an extension number setting unit is provided in each call terminal, and a command corresponding to each independent extension number is notified to the main device. The call state of the terminal can be managed, and a plurality of call terminals can respond to a call from the intercom slave unit as described above, and can operate without inconvenience even when the call is terminated.

[0008]

However, in the above-described conventional intercom apparatus, in order for the main apparatus to manage the call state of each call terminal, an extension number setting unit is provided for each call terminal, and each of the call terminals is provided with an independent extension number setting unit. It is necessary to notify a command corresponding to the extension number to the main unit, and it is indispensable to set an extension number for each call terminal at the time of installation of the intercom apparatus, so that setting mistakes or setting errors may occur.

The present invention solves such a conventional problem, and the main unit can manage the call state of each call terminal without setting an extension number for each call terminal. It is an object to provide an excellent intercom device.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method in which each call terminal receives a signal indicating that the call has been terminated from another call terminal while the call is continuing, And a means for notifying the main apparatus of a signal indicating that the own communication terminal is in a call when the communication terminal receives the communication request.

[0011]

Therefore, according to the present invention, when a call terminal receives a signal indicating the end of a call from another call terminal while the call is continuing, the call terminal that is continuing the call indicates that the call terminal is busy. Is notified to the main device, the communication state can be continued as the whole system, and a plurality of call terminals respond to a call from the intercom slave unit, and operate without any inconvenience even when the call is terminated. This eliminates the need to set an extension number for each call terminal.

[0012]

FIG. 1 shows the configuration of an intercom apparatus according to one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a main device for controlling the entire system, reference numeral 2 denotes an intercom slave unit, and reference numerals 3, 4, and 5 denote call terminals. Reference numeral 6 denotes a control unit for controlling the inside of the main apparatus 1, which is connected to the data transmitting / receiving unit 7, the ringing tone transmitting unit 8, and the door phone interface unit 9. Reference numeral 10 denotes an orthogonal separation unit for supplying power from the power supply unit 11 to each of the communication terminals 3 to 5 using the communication line 21, and is connected to the power supply unit 11 and the communication line 20. 1
Reference numeral 2 denotes a control unit that controls the inside of each call terminal, and includes a data transmission / reception unit 13, a ring tone transmission unit 14, and a call amplifier unit 15
And the call monitoring and notifying unit 16. The call monitoring and notifying unit 16 sends a signal to the main apparatus 1 to the main apparatus 1 when a plurality of call terminals including the self-call terminal receive a signal notifying the end of a call from another call terminal during a simultaneous call with the intercom slave unit 2. The own call terminal notifies a signal indicating that the call is in progress. Reference numeral 17 denotes an orthogonal separation unit for receiving the power supplied from the orthogonal separation unit 10 of the main device 1, and creates a power supply inside each communication terminal. 18 is a speaker connected to the ringing tone transmitting unit 14,
Reference numeral 19 denotes a receiver connected to the call amplifier 15. 2
Reference numeral 0 denotes a hook switch for detecting the state of the receiver 19 of each call terminal, which is connected to the control unit 12 through the call amplifier unit 15. Reference numeral 21 denotes a communication line connecting the main device 1 and each communication terminal.

FIG. 2 is a communication sequence showing data exchange in the intercom apparatus. Hereinafter, the operation of the interface device will be described with reference to FIGS. When a call is received from the intercom slave unit 2, the intercom interface unit 9 detects a call signal and notifies the control unit 6. The control unit 6 outputs the incoming call command to the communication line 21 via the data transmission / reception unit 7 and activates the ringing sound transmission unit 8 to cause the communication line 21 to transmit a ringing sound. Each call terminal receives the incoming call command via the data transmission / reception unit 13 and notifies the control unit 12 of the reception command. The control unit 12 activates the ringing tone transmitting unit 14, outputs the ringing tone transmitted via the communication line 21 from the speaker 18, and notifies the operator of the calling.

Now, when the operator of the telephone terminal 3 picks up the receiver 19 to answer the call, the hook switch 20 detects off-hook, and notifies the control unit 12 that a response operation has been performed. The control unit 12 transmits an off-hook command to the main device 1 via the data transmission / reception unit 13, the main device 1 receives the off-hook command via the data transmission / reception unit 7, and the control unit 6 performs Recognize that there was. Next, the control unit 6 connects the intercom interface 2 to the intercom unit 2 and connects the operator of the intercom terminal 3 to the intercom unit 2 via the intercom unit 15. .

At the same time, if another operator picks up the handset of the call terminal 4, the same operation as described above is performed, and the other operator simultaneously talks with the intercom slave unit 2 by the off-hook command. Can be.

Next, when the operator of the call terminal 4 ends the call, information of the hook switch 20 is notified to the main device 1 by an on-hook command, and the main device 1
Recognizing that a certain call terminal has ended the call, and for a certain time (T
Enter the monitoring mode of o). In the call terminal 3 as well, the call monitoring notification unit 16 has received the on-hook command,
Since the user himself / herself is still in a call, an off-hook command is output to the main apparatus 1 within a predetermined time (To). Main apparatus 1 receives the off-hook command within a predetermined time (To), and thus determines that the call is continuing and continues the communication path with intercom slave unit 2.

When the operator of the call terminal 3 ends the call, the call terminal 3 transmits an on-hook command, and the main unit 1 recognizes that a certain call terminal has ended and waits for a predetermined time (To). Enter the monitoring mode, but this time for a certain time (T
Since the off-hook command cannot be received within o), it is recognized that all calls have ended, and the control unit 6 of the main device 1
Causes the intercom interface unit 9 to open the communication path with the intercom slave unit 2 and ends the communication operation.

As described above, according to the above embodiment, each communication terminal is provided with the call monitoring and notifying unit 16, so that one communication terminal notifies the end of the call from another communication terminal while the communication is continued. When a signal is received, the calling terminal that is continuing the call notifies the main device of a signal indicating that the call is in progress, so that the communication state can be continued as a whole system, and the call from the intercom slave unit can be stopped. Even when a plurality of call terminals answer and end the call, the operation can be performed without any inconvenience, and there is an effect that the necessity of setting the extension number of each call terminal can be eliminated.

[0019]

According to the present invention, as is apparent from the above embodiment, each of the call terminals receives a signal indicating that the call has been terminated from another call terminal while the call is continuing, and receives the signal. In this case, the main terminal is provided with a means for notifying the main device of a signal indicating that the own calling terminal is talking on the telephone, so that the main device does not need to set an extension number for each calling terminal. It is possible to manage the call state, and it has an effect that a plurality of call terminals can respond to a call from the intercom slave unit and operate without any inconvenience even when the call is ended.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an intercom apparatus according to an embodiment of the present invention.

FIG. 2 is a sequence diagram showing a communication operation of the intercom apparatus in one embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a conventional intercom apparatus.

FIG. 4 is a sequence diagram showing a communication operation of the conventional intercom apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main apparatus 2 Door phone handset 3, 4, 5 Call terminal 6 Control part 7 Data transmission / reception part 8 Ring tone transmission part 9 Door phone interface part 10 Quadrature separation part 11 Power supply part 12 Control part 13 Data transmission / reception part 14 Ring tone transmission part 15 Call amplifier section 16 Call monitoring and notification section 17 Quadrature separation section 18 Speaker 19 Handset 20 Hook switch 21 Call line

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04Q 3/58 107 H04M 3/22 H04M 9/00

Claims (1)

(57) [Claims] 1. A door phone slave unit and a connection to the door phone slave unit.
Connected main device and a plurality of calls connected to the main device
Terminal, and the plurality of call terminals are connected to the main device and another call terminal.
A data transmitting / receiving unit for transmitting an on-hook command,
When an on-hook command is received from another calling terminal
Call monitoring that sends an off-hook command to the main unit
And the main device receives an on-hook command from the telephone terminal.
After receiving, off-hook from other call terminals for a certain period of time
If no command is received, the intercom slave
The call operation with another call terminal is terminated.
Intercom device that.