JPH0620210B2 - Intercom telephone hybrid device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an intercom telephone hybrid device, and
The present invention relates to an interphone / phone hybrid device having a function of intercommunicating indoors by an intercom and a function of a so-called parent-child telephone in which one telephone office line can be used by two to three telephones.

[Technical Background of the Invention] Conventionally, a so-called parent-child telephone in which one telephone station line extended from a telephone station 1 as shown in FIG. 12 can be used in two to three main telephones 2, 2, 2. A system called is known.

With this system, when a call comes in, the bells ring simultaneously and you can receive it from any phone. To transfer the received call to another phone, call out loud with the handset picked up, or call the other phone with the transfer device and confirm that the other handset has picked up the handset. I was returning the handset.

There is known a so-called home telephone system in which the functions of the parent and child telephones in FIG. 12 are developed and the functions such as hold, transfer, extension telephone call, and doorphone call telephone conversation are added as shown in FIG. This system includes a main telephone 2, a main device 3, and extension telephones 4a to 4 which are connected to a telephone central office line.
d, including the intercom 5. When a call comes in, the bell rings at once and you can receive it from any phone. For example, in the case of receiving at the telephone 4a, it is possible to answer by picking up the handset and pressing the outside line button. In order to transfer the received call to another telephone (for example, 4b), the hold button is pushed to hold the telephone central office line, the call system is disconnected from the central office line, and the telephone 4
Press the extension call button corresponding to b to call the telephone set 4b and return the handset. When the telephone 4b picks up the handset and presses the outside line button, the telephone 4b is connected to the telephone central office line so that the telephone can respond to the telephone 4b, and the telephone 4a is released from the hold state and put into the call end state.

[Problems with the background art] In the case of a parent-child telephone, if the handset is returned before the transferred telephone picks up the handset, the incoming call will be cut off, so the transferred destination telephone picked up the handset. Only after confirming the above, the handset cannot be returned and the operation is complicated.

Also, in the case of home telephones, the above problems will be eliminated, but it is necessary to report self-employed to install this home telephone, and it is necessary to have a certain qualification for installation work There is. Furthermore, when a house that is already using a parent-child telephone is changed to the home telephone, the wiring for the parent-child telephone cannot be used for private wiring because it is for the central office.

Therefore, all the wiring used up to now must be removed, and new wiring work must be performed, and the installation work must be done by a qualified person.

[Object of the Invention] The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional ones, and an object thereof is that even a person who does not have a certain qualification can carry out installation work and is simple in construction and individual. It is an object of the present invention to provide an interphone-phone hybrid device in which the calling side and the called side can respond by a voice-over simultaneous call.

[Summary of the Invention] In order to achieve the above object, an interphone-telephone-mixed device according to the present invention has a plug-in plug connected to an existing outlet connected to a telephone central office line and a plug-in plug connected to an existing plug. An interphone-telephone hybrid device comprising a telephone unit including a station circuit, a speech network, and a handset, a connector, and an intercom unit provided in the same housing as the telephone unit and connected to an intercom line through the connector. The intercom telephone hybrid device is a local arrival detector that detects a ringing signal from an outlet and a plug, and a relay contact that is activated when the local arrival detector detects local arrival and is connected to the speech network of the telephone unit. Relay control device that switches from the connector side to the plug side, and A channel selection button that selects the other intercom unit to call the other intercom units, a data handset that sends and receives unique channel selection data by the channel selection button, a number setting switch that sets the own station number, and data It has an analog switch that compares the tuning data sent from the handset with the own station number set by the number setting switch, and when they match, activates the microphone and speaker for voice communication.

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

Referring to FIG. 1, an interphone-phone hybrid device 10 and 20 according to the present invention includes microphones 12 and 22, speakers 13 and 23, intercom units 14 and 24, and telephone units 15 and 25 in the same housings 11 and 21 on the housings. Handset 16, 26, keypad KB1, KB
2, station selection buttons SB1, SB2, station line buttons TB1, T
B2, hold buttons LB1, LB2, station line call indicator LE
D11, LED21, extension call indicator LED12, LE
Each has a D22.

Telephone units 15 and 25 are telephone accessory cords L31,
L32 and plugs 17 and 27 are connected to the telephone line L2 via outlets 18 and 28 which are connected to the telephone line L2 additionally provided from the existing main telephone set 51.

The telephone 51 is connected to an exchange (not shown) of a telephone station 52 by a telephone line L1. This existing telephone line L
1 and the telephone line L2 to be additionally installed were installed at the telephone station.

Intercom unit 14 is code L attached to the intercom
Intercom line L5 via 41 and connector 19
To the intercom 53 via the intercom line L6.

Intercom unit 24 is an intercom accessory code L
It is connected to the intercom line L5 via 42 and a connector 29.

The intercom telephone hybrid device 10 is connected to a commercial power supply AC100V via a power supply line L7.

The intercoms 30, 40, ... Have microphones 32, 42, speakers 33, 43, intercom units 34, 44 in the housings 31, 41, and handset 36, 4 on the housings.
6, tuning buttons SB3, SB4, extension call indicator LED
32 and LED 42, respectively. Intercom units 34, 44, ... are intercom accessory cords L43,
L44, and connectors 39, 49, ... Are connected to the intercom system L5.

The respective components of the interphone-phone hybrid devices 10 and 20 and the intercoms 30 and 40 will be described in detail below.

First, the intercom telephone hybrid device 10 will be described. In FIG. 2, the intercom telephone set was connected via an existing outlet 18 and an insertion plug 17 connected to the two-line telephone central office line L2 already installed. Phone accessory code L3
1 is a rectifier bridge 61, a ringer 71, and a mixing circuit 8
1, a loudspeaker circuit including a volume controller 91 and a speaker 13 is connected. Further, the telephone accessory code L31 is terminated by the holding resistor R2 via the relay contact RLC1. On the other hand, the intercom accessory cord L41 is connected to the ground line E, the power supply line C, the intercom communication line F, and the control line D of the intercom line L5 connected via the respective parts E1, C1, F1, and D1 of the connector 19. The power supply line C is connected to the power supply (AC100
v) is supplied. The telephone station line L2 is pushed down to the B side
The relay contact C that is tilted to the M side and connected to the intercom line L5 is a bridge 101, a pulse transmitter 11
1. Handset 16 via speech network N21
(Receiver R, microphone M). The key transmitter K is connected to the pulse transmitter 111 via the dialer N31.
B1 is connected. The pulse transmitter 111 and the dialer N31 form a channel selection circuit for selecting a station line call destination. Incidentally, a so-called out-pulse dial system that allows button transmission even if the station line is a rotary dial system can be used. On the other hand, in the case of the push button station line, the dialer N31 may be deleted and the selection signal (PB signal) generation circuit may be used as the station selection circuit instead of the pulse transmitter 111. The ringer 71 is connected to the port P100 of the controller C1 via the local arrival detector 141. A current source E11 controlled by a port P101 is connected to the communication line F of the intercom line L5. The port P120 is connected to the relay control device N51 that opens and closes the relay contact RCL1. The analog switch 161 that is turned on and off by the port P102 is the volume adjuster 9
Bypassed to 1. The bridges 61, 101,
Ringer 71, pulse transmitter 111, local arrival detector 141,
Speech network N21, dialer N31, relay control devices N41, N51, keypad KB1, relay contact RLC1, station line button TB1, hold button LB1,
Circuits required for telephone communication, such as a part of the controller C1, form a telephone unit. The microphone 12 is the amplifier 17
1, the hybrid circuit 181, and the amplifier 191 to connect to the mixing circuit 81. Intercom line L5
The communication line F is connected to the hybrid circuit 181 through the analog switch 121 controlled by the port P102. The ports P104 and P105 provide triggers for generating chime and tone signals, respectively, and are connected to the chime IC 131 and their outputs are connected to the amplifier 191. The port P119 is connected to the relay control device N41 and switches the relay contact C to the B side or the M side. Input ports P121, P1
A station line button TB1 and a hold button LB1 are connected to 18, respectively. Further, six channel selection buttons SB1 are connected to the input ports P113 to P117. Door phone 5
The two-line doorphone line L6 connected to No. 3 is connected to the port P106 via the call detector D21, and also the amplifier D31 in one direction, the amplifier D41 in the other direction and the hybrid circuits D51, D61 and the analog switch D71.
Is connected to the communication line F of the intercom line L5. The analog switch D71 is controlled by the port P107. Hook switch HS1 is port P103
It is connected to the. Ports P1A and P1B are LEDs respectively
11 and LED 12 are respectively connected. Output port P
108, the input port P109 is connected to the data handset SR1, and the data handset SR1 is connected to the data line D of the intercom line L5. Port P110,
The number setting switch NS1 is connected to P111 and P112.

As shown in FIG. 3, the interphone-phone hybrid device 20 has the same circuit configuration as the intercom-phone hybrid device 10 shown in FIG. 2 except for the circuits (D21 to D71) from the intercom 53, and FIGS. Corresponding parts in the figure are designated by suffixing "1" and "2" respectively. The telephone unit in the interphone-phone hybrid device 20 is configured similarly to the interphone-phone hybrid device 10.

Further, as shown in FIG. 4, the intercom 30 has the same circuit configuration as that of the interphone-telephone hybrid device 20 shown in FIG. 3 except for the telephone circuit, and the corresponding parts in FIGS. Reference numerals "2" and "3" are attached to correspond to each other. However, intercom line L5
The telephone call line F is connected to the speech network N23 via the hook switch HS4.

Next, in the intercom telephone hybrid device 10, the function of the controller C1 having such an input / output port is changed to the fifth function.
This will be described with reference to the functional block diagram of the figure.

The landing arrival detection means 200 operates by detecting the landing line incoming signal sent from P100, and its output signal is input to one terminal of the gate G1 via the holding means 201.

The holding means 201 is self-held by the output signal of the gate G1.

The current source driving means 211 sends a signal for supplying power to the handset system to P101.

The extension call means 221 sends to P102 a signal for establishing a call system using a microphone and a speaker in accordance with the output signal of the comparison means 361.

The hook state detecting means 231 detects the state of the hook switch sent from P103, and the off-hook output signal is output from the other terminal of the gate G1 and the gates G2 and G3.
It is input to one terminal of G4, G5, and G6. The on-hook output signal is connected to the reset terminal of the latch means 411 via the switch means 421.

The chime trigger means 241 is the intercom calling detection means 2
A signal for ringing a chime sound according to the output signal of 71 is sent to P104.

The tone trigger means 251 sends a signal for ringing a tone signal for a certain period of time to the P105 by the output signal of the comparison means 361 being sent via the immediate means 261.

The intercom calling detection means 271 detects the intercom calling signal sent from P106, and the output signal is input to the other terminal of the gate G6 via the timer means 281 and the holding means 291.

The timer means 281 supplies an input signal to the gate G6 for a certain period of time even if the intercom ringing signal disappears.

The holding means 291 is self-held by the output signal of the gate G6.

The intercom communication means 301 sends a signal for establishing an intercom communication system to P107 by the output signal of the gate G6.

The station line call display means 311 sends out a blinking signal when the output signal of the latch means 411 is sent through the blinking means 321 and a continuous signal to the P1A by output signals of the gates G1 and G4.

The extension call display means 331 sends a signal for displaying an extension call to P1B according to the output signals of the gates G5 and G6.

The data transmission means 341 is the door phone call detection means 27.
1, the output signals of the gate G7, the gates G1, G4, G6, and the latch means 411 are sent to P108, and are supplied to another interphone-telephone hybrid device and intercom via the intercom line L5.

The data receiving unit 351 receives the signal input to P109 from another interphone-telephone hybrid device and the intercom via the intercom line L5, and outputs the output signal of the intercom calling detection unit to the timer unit 281 and the chime trigger unit 241. The output signal of the gate G7 is sent to the comparison means 361, the output signals of the gates G1 and G4 are sent to the station line call display means 311, the output signal of the gate G6 is sent to the intercom call means 301, and the output signal of the latch means 411 is turned on / off means 3
21 respectively.

The comparing means 361 compares the signal inputted from the gate G7 with the signal inputted from the own station number reading means 371, and outputs a coincidence signal when both coincide.

Own station number reading means 371 is P110, P111, P11.
The own station number sent from No. 2 is read, and its output signal is input to the comparing means 371.

The hold relay control means 381 sends a control signal from P120 for operating the relay control device N51 by the output signal of the latch means 411 to make the relay contact.

The station line switching relay control means 391 uses the gates G1 and G4.
A control signal for operating the relay control device N41 to break the contact and an output signal of the holding relay control means 381 for operating the relay control device N41 to make the contact are sent from P119. .

The station line switch state detection means 401 detects the state of the station line switch sent from P121, and the output signal thereof is input to the other terminal of the gate G4.

The latch means 411 is set by the output signal of the gate G3 and reset by the output signal of the switch means 421.

Although the switch means 421 is a normal circuit, it is closed by the output signal of the key input number reading means.

The hold switch state detection means 431 detects the state of the hold switch sent from P118, and the output signal thereof is input to the other terminal of the gate G3.

The key input number reading means 441 is P117, P116, P.
The phase number sent from 115, P114, P113 is read, and its output signal is input to the other terminals of the gates G7 and G5 and the control terminal of the switch means 421.

The interphone-telephone hybrid devices 10 and 20 and the intercoms 30 and 40 configured in this way operate as follows.

(A) Standby The relay control devices N41 and N42 of the interphone-phone hybrid devices 10 and 20 are in a call state, and the contacts C are both on the M side. The relay control devices N51 and N52 are in the non-energized state, and the relay contacts RLC1 and RLC2 are in the break state (open). The hook switches HS1 and HS2 are break (open).

(B) Incoming call from office line In the interphone-phone hybrid device 10, the ringing signal is rectified by the rectifier bridge 61, and the ringer 71 oscillates using this DC voltage as a power source. The oscillating signal is supplied to the speaker 13 via the mixing circuit 81 and the volume adjuster 91 to produce a tone ringer sound. At the same time, the DC arrival voltage drives the local arrival detector 141 to send a signal to the controller C1 that there is an incoming local line, through the port P100.
The controller C1 sets the station line incoming flag via the station arrival detection means 200 by the signal of the port P100. When there is no incoming call to the central line, the incoming flag to the central line is reset (FIG. 6).

The interphone-phone hybrid device 20 operates in the same manner as the interphone-phone hybrid device 10.

(C) Station line response In the intercom telephone hybrid device 10, if the handset 16 is taken up while the station line incoming flag of the controller C1 is set (while the ringtone is ringing), the hook switch HS1 is closed. And sends an off-hook signal to port P103. As a result, the controller C1 holds the incoming signal by the logical product of the hook state detection means 231 and the landing detection means 200 via the gate G1 and the holding means 201, and via the station line switching relay control means 391. The relay control device N41 is activated by the port P119, and the relay contact C is set to the B side. The bridge 101, the pulse transmitter 111, and the speech network N21 thereby form a DC loop with respect to the office line to realize a station line communication system. At the same time, a station line call flag is set by the station line call display means 311 via the gate G1, and the port P1 is set.
The station line call indicator LED11 is turned on by A to display the station line call state, and the data transmitter / receiver SR2 and the port P of the intercom telephone hybrid apparatus 20 are connected to the port P108 via the data transmitting means 341 and the data transmitter / receiver SR1.
209 by sending a signal to the controller C2 via the data receiving means 351 of the controller C2 and setting the office line call flag and via the office line call display means 311 via the port P2A.
The ED 21 is turned on to display that the central line is being used.

In the intercom telephone hybrid device 20, the handset 26
In this case, the interphone-phone hybrid device 20 operates in the same way as the interphone-phone hybrid device 10 (FIG. 6).

(D) Simultaneous use of station line (three-way call) When the interphone / phone set hybrid device 10 picks up the handset 26 while the interphone / phone set hybrid device 10 is in a station line call and presses the station line button TB2, the relay control device N42 is activated. A call circuit composed of the bridge 102, the pulse transmitter 112, and the speech network N22 is connected to the office line L2 with the relay contact C on the B side, and a three-way call is made between the office line, the interphone-phone hybrid device 10, and the interphone-phone hybrid device 20. To be realized.

(E) At the time of station line transmission When the intercom telephone hybrid device 10 picks up the handset 16, the hook switch HS1 is closed and an off-hook signal is sent to the port P103 of the controller C1.
The output of the hook state detecting means 231 and the local line button T
When B1 is pressed, a pressing signal is sent to P121, and the logical product with the output of the station line button state detecting means 401 is gate G4.
The relay control device N41 is activated via the station line switching relay control means 391 through the port P119 to set the relay contact C to the B side. As a result, a direct current closed loop including the bridge 101, the pulse transmitter 111, and the speech network N21 is formed for the station line. When the keypad KB1 is pressed, a dialer N31 generates a selection signal and sends the selection signal to the pulse transmitter 111 to transmit the station line transmission data as a selection signal for the station line.

Further, as described in (c) by the gate G4, the line call flag of the controller C1 and the controller C2 is set to set the line call indicator LED 11 of the interphone-phone hybrid device 10 and the line call display of the interphone-phone hybrid device 20. The light LED 21 is turned on to display that the central line is being used.

The interphone-phone hybrid device 20 operates in the same manner as the interphone-phone hybrid device 10 (FIG. 7).

(F) When calling the intercom When the call button of the intercom 53 is pressed, the call detector D21 detects the call and the port P of the controller C1 is detected.
A calling signal is sent from 106 to the intercom detection detecting means 271. As a result, the intercom calling flag of the controller C1 is set, and the chime IC 131 is triggered by the port P104 via the chime trigger means 241 to generate a chime signal. This chime signal is amplifier 19
The signal is amplified by 1 and is supplied to the speaker 13 through the mixing circuit 81 and the volume adjuster 91 to cause the speaker 13 to ring. Also,
A signal is sent from the data transmitting means 341 to the interphone-telephone hybrid device 20 and the interphone 30 through the port P108 and the data handset SR1, the doorphone call flag of the controller C2 and the controller C3 is set, and a chime sound is generated as in the interphone-phone hybrid device 10. It rings (Fig. 8).

(G) At the time of answering the doorphone The controllers C1 to C3 set the doorphone call flag for a certain time after the doorphone call is generated by the timer unit 281, but reset the doorphone call flag when the time is exceeded, and the system is in the standby state. Leading to. Therefore handset 1
I cannot respond even if I pick up 6, 26, 36, and 46.

<Response of intercom telephone hybrid device 10> Handset 16 while the intercom calling flag is set
If you take up the port P1 by hook switch HS1
03, the logical product of the signal of the hook state detection means 231 and the output of the timer means 281 is generated from the gate G6, the doorphone call means 301 sets the doorphone call flag, and the doorphone call flag is reset, and The holding means 291 is held. Doorphone call A signal is sent to the current source driving means 211 by setting the call flag, the current source E11 is activated through the port P101, and the call is made by the bridge 101, the pulse transmitter 111, and the speech network N21 through the M side of the relay contact C. Power is supplied to the circuit. At the same time, the analog switch D71 is closed by the port P107, and the hybrid circuit D6 is closed.
1, amplifier D31, amplifier D41, hybrid circuit D5
An intercom communication system is realized by connecting the intercom communication circuit consisting of 1 and the communication circuit consisting of the bridge 101, the pulse transmitter 111, and the speech network N21. By the doorphone call flag set of the controller C1 by the interphone-phone hybrid device 10, the door-door call flag of the controller C2 of the interphone-phone hybrid device 20 and the controller C3 of the interphone 30 is reset through the data transmitting means 341, the port P108, and the data handset SR1. Set the doorphone call flag.

Also, depending on the doorphone call flag, the interphone-phone hybrid device 10, the interphone-phone hybrid device 20, the interphone 30 controllers C1, C2, and port P of the C3.
Extension call indicator LED1 by 1B, P2B, P3B
2, LED22 and LED32 are turned on to display that the extension call is in progress.

<Intercom telephone hybrid device 20, intercom 30
Response> Similarly to the interphone-phone hybrid device 10, the interphone-phone hybrid device 20 and the intercom 30 reset the doorphone call flag of the controllers C2 and C3 and set the doorphone call flag (FIG. 8).

(H) At the end of doorphone talk When the handset 16 is lowered in the interphone-phone hybrid device 10, an on-hook signal is sent to the hook state detection means 231 of the controller C1 by the hook switch HS1 and port P103, and the doorphone call flag is reset. Therefore, the analog switch D
71 is in an open state. In addition, the intercom telephone hybrid device 20, the intercom 30 through the data handset SR1.
Also resets the doorphone call flag.

The interphone-phone hybrid device 20 and the intercom 30 operate in the same manner as the interphone-phone hybrid device 10 (FIG. 8).

(I) Intercom call, during call Interphone / phone hybrid device 10, interphone / phone hybrid device 20, and intercom 30 as indoor units are ports P110, P11 of controllers C1, C2, C3.
1, the machine number is set by the own station number reading means 371 via P112. That is, the interphone-phone hybrid device 10 is assigned No. 1, the interphone-phone hybrid device 20 and the interphone 30 are assigned numbers 2 to 6 by the number setting switches NS1 and NS2.

A case in which the interphone-phone hybrid device 10 calls the interphone-phone hybrid device 20 to make a call will be described (FIGS. 9 to 10).

When the intercom telephone hybrid device 10 picks up the handset 16 and presses an arbitrary tuning switch (other than its own station), the output of the hook state detecting means 231 via the port P103 of the controller C1 and the ports P117, P116, P11.
5, a logical product with the output of the key input number reading means 441 via P114, P113 is generated from the gate G5, the current source E11 is activated by a signal to the port P101 via the current source driving means 211, and the bridge 101, Electric current is supplied to the communication circuit by the pulse transmitter 111 and the speech network N21. At the same time, the logical product of the output of the gate G5 and the output of the key input number reading means 441 is generated by the gate G7, and the port P10 is generated via the data transmitting means 341.
8. A signal indicating that the extension is being used is sent from the data handset SR1 to set the indoor call flag of the other device, and the port P2 is set.
Internal call indicator LED22, LED3 by B, P3B
2 is lit to indicate that the extension is in use.

Also, the key input number reading means 441, the gate G7, the data transmitting means 341, the port P108, and the data handset SR1.
The peculiar tuning data transmitted by the receiving unit 351 receives from the port P109 of the controller of the other device by the data receiving unit 351, and the output thereof and the output of the own station number reading unit 371 are applied to the comparison unit 361. If the result is a comparison, the time trigger means 261 sets the tone trigger means 251 for a short time, and at the same time, the comparison means 361 and the extension call means 221 also set the port P202. The chime IC 132 is activated from P205, a tone (electronic sound) is generated, this is amplified by the amplifier 192, the signal is bypassed by the mixing circuit 82 and the analog switch 162, and the speaker 23 is sounded with the maximum sound without using the volume adjuster 92. Let Further, since the analog switch 122 is closed by the port P202, the microphone 22, the amplifier 172, and the hybrid circuit 18 after the completion of the electronic sounding.
2, amplifier 192, mixing circuit 82, analog switch 1
62, the loudspeaking system communication circuit of the interphone-phone hybrid device 20 is activated by the speaker 23, and a loud-speaking simultaneous call can be realized with the communication system with the interphone-phone hybrid device 10.

When the intercom telephone hybrid device 20 picks up the handset 26, the hook state detection means 231 and the extension communication means 221.
Then, the port P202 is reset and the voice call system is deactivated, but the hook state detecting means 231 and the comparing means 361 are connected.
AND is generated in the gate S2, and the current source driving means 2
The port 201 is set at 11 to activate the current source E12, and the handset communication circuit is formed by the bridge 102, the pulse transmitter 112, and the speech network N22. Therefore, transmission / reception is performed between the interphone-phone hybrid device 10 and the interphone-phone hybrid device 20. A telephone call circuit is realized.

Interphone Telephone hybrid device 10 is an intercom 30
And the interphone-phone hybrid device 20 includes the interphone-phone hybrid device 10 and the interphone-phone hybrid device 20.
Is an intercom 30, an intercom 30 is an interphone-phone hybrid device 10, and an interphone 30 is a call telephone with the interphone-phone hybrid device 20, the same as when the interphone telephone hybrid device 10 is a call-call with the interphone-phone hybrid device 20. Operate.

(J) When holding the office line (self-hold) When the intercom telephone hybrid device 10 presses the hold button LB1 during a line call, the output from the hold switch state detecting means 431 and the hook state detecting means 2 from the port P118.
A logical product with the output of 31 is generated by the gate G3, the latch means 411 is set and the station line hold flag is set, and the hold relay control means 381 activates the relay control device N51 by the port P120 to load the relay contact RLC1. Direct current is closed by the resistor R2. Thereafter, the hold relay control means 381 sets the port P119 via the station line switching relay control means 391, and the relay control device N
When 41 is activated and the relay contact C is set to the M side, the speech communication system by the speech network N21 or the like is disconnected from the station line (reset of the station line call flag). When the hold flag is set, the blinking means 321, the office line call display means 311, and the port P1A are intermittently set, and the outside line call indicator LED1
1 blinks. Also, the hold flag of the intercom telephone hybrid device 20 is set through the data handset SR1, and only the outside line communication indicator LED 21 blinks.
Although the hold flag of the interphone-phone hybrid device 20 is set, the interphone-phone hybrid device 1 is thereby set.
As in the case of 0, the relay control device N52 is not activated to close the station line on the interphone-phone hybrid device 20 side.

The latch means 411 is reset via the switch means 421 by the on-hook detection of the hook state detection means 231, but the switch means 421 is opened at the stage when the hold flag is set. In the hybrid device 10, even if the handset 16 is lowered and the hook switch is opened, the hold flag is not reset and the station line is still closed.

When the intercom telephone hybrid device 10 lowers the handset 16 and picks it up again, or when it does not lower it, if the station line button TB1 is pressed in that state, the station line call flag is set as described in (e), and relay control is performed. Device N4
1, the contact C is switched to the B side, the hold flag is reset, and the relay control device N51 is turned off.
The station line is closed by. As a result, the original station line communication state is established.

(K) Station-line hold transfer When the interphone-phone hybrid device 10 puts the line-hold call button LB1 into a hold state and then transfers to another interphone-phone hybrid device 20, the channel selection button SB1
Select the partner station number. That is, ports P113 and P1
Signals sent from 14, P115, P116 and P117 are sent to the switch means 4 via the key input number reading means 441.
21 is controlled and the switch means 421 is closed. At the same time, as described in (i), peculiar channel selection data is transmitted through the data transmitting means 341 and the port P108, and the corresponding other device, in this case, the intercom telephone hybrid device 20, can be called to make an indoor call. After that, the intercom telephone hybrid device 20 picks up the handset 26, and the station line button TB2
When is pressed, as described above, the gate G4 operates the relay control device N41 via the station line switching relay control means 391 and the port P119 to switch the relay contact C to the B side to establish the station line communication system and (c As described above, the station line call indicator lamps LED21 and LED11 are changed from blinking to lighting.

Intercom telephone hybrid device 10 is a local line call indicator LE
When the handset 16 is returned after confirming that D11 has changed from blinking to lighting, since the switch means 421 is closed, the latch means 411 is reset by the on-hook signal of the hook state detecting means 231, and the hold relay control is performed. The means 381 is reset, the hold state is released, and the state returns to the standby state. Intercom telephone hybrid device 2
The same operation is carried out when the hold transfer is performed from 0 to the intercom telephone hybrid device 10 (FIG. 11).

Further, in the above embodiment, when the station line is put on hold, the hold button is used, but instead of the hold button, a button (own station number button) that is not connected to the other party of the channel selection buttons may be used.

As an embodiment of the present application, a switch means is provided for controlling the reset of the latch means for setting the hold flag in the function of the controller, and the switch means is opened except when the partner station number is selected by the select button. By
Although the holding state is not released even if the handset is returned after the station line is held, it is possible to omit the switch means as another embodiment. However, in this case, if the handset is returned in the self-holding state, the hold state is released and the state returns to the standby state, so it is necessary to hold the handset.

[Effects of the Invention] As is apparent from the above embodiments, according to the present invention, at the time of installation work, the plug 17 inserted into the outlets 18, 28 already connected to the telephone central line L2. Two
By connecting 7, it is possible to connect the telephone units 15 and 25 by using the already installed telephone office line as it is,
Further, it suffices to lay the intercom line L5 separately from the telephone office line and connect the intercom units 14 and 24 to the intercom line via the connectors 19 and 29. Therefore, the installation work can be done only by a person who has a certain qualification, and anyone can install it and it is simple in construction.

Also in the operation, the intercom unit 14,
Sending unique tuning data by the tuning buttons SB1 and SB2 between the 24 stations, receiving this and comparing with the own station number,
When they match, an individual call can be made, and the microphones 12 and 22 and the speakers 13 and 23 on the called side can be activated to make a response in a loud voice simultaneous call, which simplifies the operation.

[Brief description of drawings]

FIG. 1 is an explanatory view of an intercom telephone hybrid device according to the present invention, FIGS. 2, 3, and 4 are circuit block diagrams of the device, and FIG. 5 is a functional block diagram of a controller, FIG.
7, FIG. 8, FIG. 9, FIG. 10, FIG. 11 are flowcharts for explaining the functions of the controller, FIG. 12 is an explanatory diagram of a conventional parent-child telephone, and FIG. 13 is an explanatory diagram of a conventional home telephone. Is. 10, 20 …… Intercom telephone hybrid device L2 …… Telephone central line 18, 28 …… Outlet 17, 27 …… Insert plug 15, 25 …… Telephone unit 11, 21 …… Housing SB1, SB2 …… Channel selection Buttons 12, 22 ...... Microphone for voice communication 13, 23 ...... Speakers for voice communication 14, 24 ...... Intercom unit L5 ...... Intercom line 19, 29 ...... Connector 121, 161, 122, 162 ...... Analog switch SR1, SR2 ... Data transmitter / receiver NS1, NS2 ... Number setting switch 111, 112 ... Pulse transmitter (channel selection circuit) N31, N32 ... Dialer (channel selection circuit) N21, N22 ... Speech network 16, 26 …… Handset 141, 142 …… Local arrival detector C …… Relay contact M …… Connector The plug-side N41 Insert B ......, N42 ...... relay control device

 ─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-55-6928 (JP, A) JP-A-57-97256 (JP, A) JP-A-59-52956 (JP, A) JP-A-51- 25003 (JP, A) JP-A-50-93007 (JP, A)

Claims (1)

[Claims] 1. A plug (1) connected to an existing outlet (18, 28) connected to a telephone line (L2).
7, 27) and a tuning circuit (111, 112, N31, N32) connected to the insertion plug, a speech network (N21, N22) and a handset (16, 26).
A telephone unit (15, 25) including the same, a connector (19, 29), and the same casing (1
1, 21) and an intercom unit (14, 24) connected to the intercom line (L5) via the connector, wherein the interphone-phone hybrid device is the outlet. And an arrival detector (141, 142) for detecting a ringing signal from the insertion plug, and a relay contact which is activated when the arrival detection is detected by the arrival detector and is connected to the speech network of the telephone unit. Relay control device (N41, N42) that switches (C) from the connector side (M) to the insertion plug side (B)
And a tuning button (SB for selecting the other intercom unit in order to call the intercom unit to each other).
1, SB2), data transceivers (SR1, SR2) for transmitting and receiving unique tuning data by the tuning button, and number setting switches (NS1, NS2) for setting the own station number.
And the tuning data sent from the data handset and the own station number set by the number setting switch are compared, and when they match, the microphone (1
2, 22) and analog switches (121, 161, 122, 162) for activating the speakers (13, 23).