JPS61174859A - Interphone telephone hybrid device - Google Patents

Abstract

PURPOSE:To obtain a hybrid device between an interphone unit and a telephone unit by providing the interphone unit and the telephone unit in a housing and connecting the interphone to a line by a connector and connecting the telephone to a central office line through an insertion plug and a receptacle. CONSTITUTION:Interphone telephone hybrid devices 10 and 20 having microphones 12 and 22, speakers 13 and 23, interphone units 14 and 24, and telephone units 15 and 25 in housings 11 and 21. Telephone units 15 and 25 are connected to a central office line L2 through receptacles 18 and 28 by cords L31 and L32 attached to telephones and insertion plugs 17 and 27. The inter phone unit 14 is connected to an interphone line L5 through an attached cord L41 and a connector 19. in case of trunk line holding, the on-hook state is not set for self-holding even if a handset is hooked on. The wiring of the central office line is used as it is, and the indoor mutual communication function as interphones is added to master and slave telephones.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an intercom telephone hybrid device, and more particularly,
To provide an intercom telephone hybrid device which has both an indoor mutual communication function using an intercom and a function as a so-called parent-child telephone in which one telephone line can be used by two or three telephones.

[Technical Background of the Invention] Conventionally, as shown in FIG. 12, one telephone line extended from a telephone office 1 can be used for two to three main telephones 2.2.2. A system called

According to this system, when a call is received, the bell rings all at once, and the call can be received from any telephone. To transfer a received call to another phone, either pick up the handset and call out loud, or use the transfer device to call the other phone, make sure that the other phone picks up the handset, and then call your phone. I had returned the handset.

A system called a so-called home telephone is known, which is an extension of the functions of the parent-child telephone shown in FIG. 12 and adds functions such as hold, transfer, extension calls, and door phone calls as shown in FIG. This system includes a main telephone 2, a main device 3, extension telephones 4a to 4d, which are connected to the telephone line of a telephone station 1.
When a call is received, including the doorbell 5, the bell rings all at once and the call can be received from any telephone.For example, when receiving a call from the telephone 4a, the user can answer by picking up the handset and pressing the outside line button. Transfer the received call to another phone (e.g. 4B)
), press the hold button to put the telephone line on hold, disconnect the telephone line from the line, press the extension call button corresponding to telephone 4b to call telephone 4b, and put the handset back. When the telephone 4b picks up the handset and presses the outside line button, the telephone 4b is connected to the telephone line so that it can answer, and at the same time the telephone 4a is released from the hold state and the call is ended.

[Problems with the background art] In the case of a parent-child phone call, if you put the handset back before the transferred phone picks up the handset, the incoming call will be disconnected. The disadvantage is that the handset cannot be returned to its original position until it is confirmed, making the operation complicated.

In addition, in the case of home telephones, the above-mentioned problems are eliminated, but in order to install this home telephone, it is necessary to register as a self-employed person, and in addition, the problem is that a person must have certain qualifications to carry out the installation work. There is. Furthermore, if a home that already uses a parent-child telephone is to be replaced with a home telephone, the wiring for the parent-child telephone is owned by the central office, so it cannot be used as private wiring.

Therefore, all the wiring that has been used so far must be removed and new wiring work must be carried out, and the installation work can only be carried out by a person with certain qualifications.

[Purpose of the Invention] The present invention has been made to eliminate the drawbacks of the conventional ones as described above. It has both the function of a parent-child telephone connected to the telephone office line via a built-in plug, and the indoor mutual communication function by installing an intercom line separately from the telephone office line and connecting to the intercom line via a connector. The purpose of this invention is to provide an intercom/telephone hybrid device.

[Summary of the Invention] In order to achieve the above object, the intercom telephone hybrid device according to the present invention includes an intercom unit and a telephone unit each provided in a housing, the intercom unit being connected to an intercom line via a connector, and the telephone unit being connected to an intercom line through a connector. It is connected to the telephone office line via a plug and outlet.

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

In FIG. 1, an intercom telephone hybrid device 10.20 according to the invention includes a microphone aphone 1 in a housing 11.21.
2, 22, speakers 13, 23, intercom line)
14.24 and a telephone unit 15.25, a handset 16, 26 and a numeric keypad KP 1. K.P.
2. Tuning buttons SBI, SB2, outside line buttons TBI, T
B2, hold button LB 1. LB2, central office line call indicator L
It is equipped with an ED 11.21 and an extension call indicator LED 12.22.

Telephone unit) 15.25 is the telephone accessory code L31.
L32 and a plug 17.27 are connected from the existing main telephone 51 to the telephone office line L2 through an outlet 18.28 provided on the telephone office line L2.

This telephone 51 is connected to an exchange (not shown) of a telephone office 52 by a telephone office line L1. This existing telephone office line L
1 and the additional telephone office line L2 are installed at the telephone office.

Intercom unit 14 is intercom attached cord L
41 and intercom line L5 via connector 19
and is connected to the door phone 53 via the door phone line L6.

Intercom unit 24 is intercom attached cord L
24 and connector 29 to the intercom line L5.

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

The intercoms 30, 40, . . . have microphones 32, 42, speakers 33, 43, and intercom units 34, 44 in the housings 31, 41, and a transceiver 36 on the housing.
．． 46, Tuning buttons SB3, SB4, extension call indicator L
They are equipped with ED32.42 respectively.

The intercom units 34, 44, . . . are connected to the intercom attached cord L43. L44, and connector 39.49
, . . . are connected to the intercom line L5.

The configurations of intercom telephone hybrid device 10.20 and intercom 30.40 are detailed below.

First, to explain the intercom telephone hybrid device 10, in FIG.
2 through the outlet 18 and the plug 17', the telephone accessory cord L31 is connected to the rectifier bridge 6.
1, a ringer 71, a mixing circuit 81, a volume adjuster 91, and a speaker 13. Further, the telephone accessory cord L31 is terminated at a holding resistor R1 via a relay contact RLC1. On the other hand, the intercom attached cord L41 is connected to each part El of the connector 19.

Intercom line L5 ground wire E, power line C1 intercom call line F connected via CI and FiDI,
Connected to control line. Power is supplied to the power line C from the power line L7 via the power supply section E1. The relay contact C, which is turned to the B side and connected to the telephone office line L2, and which is turned to the M side and connected to the intercom line L5, is connected to the bridge 101. It is connected to a handset 16 (receiver R, microphone M) via a pulse transmitter 111 and a speech network 121. A key bat KPI is connected to the pulse transmitter 111 via a dialer 131.

Note that even if the line is of a rotary dial type, a so-called out-pulse dial type can also be used, which allows button dialing.

On the other hand, in the case of a button line, dialer 13
1 is deleted and the selection signal (
It is preferable to use a PB multiple signal generation circuit. The ringer 71 connects to the boat P1 of the controller C1 via the station arrival detector 141.
Connected to 00. The communication line F of the intercom line L5 has a current source El controlled by the boat P101.
l is connected. Baud) P120 is relay contact RL
It is connected to a relay control device 151 that opens and closes C1. The analog switch 161, which is turned on and off by P2O3, is bypassed by the weight adjuster 91. The microphone 12 has an amplifier 171 and a hybrid circuit 181. It is connected to the mixing circuit 81 via an amplifier 191. The communication line F of the intercom line L5 is connected to the hybrid circuit 181 via an analog switch 121 controlled by baud P2O3. Bo) P2O3,
P2O3 provide triggers for generating chime and tone signals, respectively, and are connected to chime IC 131, and their outputs are connected to amplifier 191. The boat Pi 19 is connected to the relay control device 141, and is used to switch the relay contact C to the B side or Mllll+1. A central office line button KBI and a hold button LBI are connected to the input ports P121 and PI 18, respectively. In addition, there are 6 channel selection buttons S on P113 to PI 17.
B1 is connected. 2A connected to doorbell 53
The door phone line L6 of I is connected to P2O3 via a ring detector 121, and is also connected to a one-way amplifier 131.
, the amplifier 141 in the other direction and the hybrid circuit W1151.
16] and is connected to the communication line F of the intercom line L5 via an analog switch 171. Analog switch 171 is controlled by boat P107.

The hook switch HSI is connected to P2O3.

The boats PIA and PIB are each connected to an LED II SLED 12, respectively. Output boat P108, input port)
P 109 is connected to a data handset 181, which is connected to the data line of intercom line L5.

As shown in FIG. 3, the intercom telephone hybrid device 2o has the same circuit configuration as the intercom hybrid device shown in FIG.
Corresponding parts in FIG.
"2" is added to each to correspond to each other. However, a number setting switch NS2 is connected to the boats P210SP211 and P212 of the controller c2.

Further, as shown in FIG. 4, the intercom 30 has the same circuit configuration as the intercom/telephone hybrid device 20 shown in FIG. 3 except for the telephone circuit, and corresponding parts in FIGS. The symbols "2" and "3" are added to correspond to each other.

However, the call line F of the intercom line L5 is connected to the speech network 123 via the hook switch H53.
It is connected to the.

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 one.
This will be explained using the functional block diagram shown in the figure.

The station arrival detection means 191 operates by detecting the station line arrival signal sent from Ploo, and its output signal is inputted to one terminal of the terminal 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 the PIOI.

The extension communication means 221 uses the output signal of the comparison means 361 to send a signal to P2O3 for establishing a communication system using a microphone and a speaker.

The hook state detection means 231 detects the state of the hook switch sent from P2O3, and the output signal due to the off-hook is transmitted to the other terminal of the gate G1 and the gates G2, G3,
Manual input is applied to one terminal of G4, G5, and G6. The output signal due to on-hook is connected to the reset terminal of the latch means 411 via the switch means 421.

The chime trigger means 241 is the doorbell call detection means 2
A signal for making a chime sound is sent to 2104 based on the output signal of 71.

The tone trigger means 251 receives the output signal of the comparison means 361 via the immediate means 261, and sends out a signal for ringing a tone signal for a certain period of time to P2O3.

Door phone call detection means 271 detects a door phone call signal sent from P2O3, and its output signal is inputted to the other terminal of game G6 via timer means 281 and holding means 291.

The timer means 281 supplies an input signal to the game G6 for a certain period of time even if the door phone call signal disappears.

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

The door intercom communication means 301 sends a signal for establishing a door intercom communication system to P2O3 based on the output signal of the game G6.

The central office line call display means 311 sends a blinking signal to the PIA by the output signal of the latch means 411 being sent through the blinking means 321, and a continuous signal to the PIA by the output signals of the gates G1 and G4.

The extension call display means 331 sends a signal for displaying an extension call to the PIB based on the output signals of the game consoles G5 and G6.

The data transmission means 341 is the doorbell call detection means 27.
1. Gate G7, the gates G1, G4, G6, and the output signals of the latch means 411 are sent to 2108 and supplied to other intercom telephone hybrid devices and intercoms via intercom L5.

The data receiving means 351 receives the signal manually inputted from the other intercom telephone 1a filling device and the intercom to P2O3 via the intercom line L5, and transmits the output signal of the door intercom call detection means to the timer means 281 and the chime trigger means. 241, the output signal of Game) G7 to the comparison means 361, the output signal of Game) Gl, G4 to the central line call display means 311, the output signal of Game) G6 to the intercom call means 301, the output of the latch means 411. The signals are supplied to the blinking means 321, respectively.

The comparison means 361 compares the signal manually inputted from the game G7 and the signal inputted from the local number reading means 371, and outputs a matching signal when the two match.

The own station number reading means 371 reads the own station number sent from Pllo and Pill, and the output signal is sent to the comparing means 371.
is input to.

The holding relay control means 381 sends out a control signal from P120 to cause the relay control device 151 to operate according to the output signal of the latch means 411 and to make the relay contact.

The station line switching relay control means 391 controls the gates G1 and G4.
A control signal for operating the relay control device 141 to break the contact by the output signal of the PI 19 and a control signal for operating the relay control device 141 and making the contact by the output signal of the holding relay control means 381 are transmitted.
Send from.

The office line switch state detection means 401 detects the state of the office line switch sent from P121, and its output signal 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.

The switch means 421 is a normal circuit, but is closed by the output signal of the key manual number reading means.

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

The key manual number reading means 441 is P117, pi16, P
115, PI 14, and PI 13, and the output signals thereof are inputted to the other terminals of the game consoles G7 and G5 and the control terminal of the switch means 421.

The intercom telephone hybrid devices 10, 20 and the intercoms 30, 40 configured in this manner operate as follows.

(a) Standby intercom phone 8! Relay control devices 141 and 142 of hybrid device 10.20 are energized and contacts C are both M
It's on the side. The relay control devices 151 and 152 are in a de-energized state, and the relay contacts RLC1 and RLC2 are in a break state.
l (oven). Hook switch HSiH52 is a break (oven).

(b) When receiving a call from a central office line In the intercom/telephone hybrid device 10, the rectifier bridge 61 rectifies the ringing signal, and the ringer 71 uses this DC voltage as a power source to perform an oscillating operation. The oscillation 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, this DC voltage drives the station arrival detector 141 and sends a signal to the controller C1 through the boat P100 indicating that there is an arrival at the station line.

The controller C1 sets a station line incoming flag via the station arrival detection means 191 in response to the Ploo signal. When there are no more incoming calls on the local line, the incoming call flag on the local line is reset (
Figure 6).

The intercom telephone hybrid device 20 performs the same operation as the intercom telephone hybrid device 10.

(c) When responding to a central office line In the intercom/telephone hybrid device 10, if the handset 16 is picked up while the central office line incoming flag of the controller C1 is set (while the central office ring tone is sounding), the hook switch HSI closes. Tona Ribo) Sends an off-hook signal to P103. As a result, the controller CI holds the incoming signal by the holding means 2.01 via Gl, and also controls the station line switching relay control means 391. Then, the relay control device 141 is activated by P119, and the relay contact C is set to the B side. The bridge ioi, the pulse transmitter 111, and the speech network 5NW 121 thereby form a DC loop with respect to the central office line, thereby realizing a central office line communication system. At the same time, the office line call display means 311 via the gate G1 sets the office line call flag, and the boat PIA lights up the office line call indicator LED II to display the office line call status, and the data transmitting means 341 A signal is sent to the data transmitter/receiver 1B2 of the intercom telephone hybrid device 20 through the data transmitter/receiver 181 to the data transmitter/receiver 1B2 of the intercom telephone hybrid device 20, and to the data transmitter/receiver (Baud) P2O3 via the data receiving means 351 of the controller C2, and a central office line call flag is set to indicate a central office line call. P2A via means 311 turns on the peripheral communication indicator light LED 21 to indicate that the central office line is in use.

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

(d) When using the central office line simultaneously (three-party call) When the intercom telephone hybrid device 10 is talking on the central office line, the intercom telephone hybrid device 20 picks up the handset 26 and presses the central office line button TB2, which starts the relay control device 142. Connect the communication circuit consisting of the bridge 102, pulse transmitter 112, and speech network 5NW 122 to the office line L2 with the relay contact C on the B side, and connect the office line, intercom telephone hybrid device 10, and intercom telephone hybrid device 2.
Achieve 0 champion calls.

(e) When making a call to the central office line, the intercom/telephone hybrid device 10 picks up the handset 16, which closes the hook switch H3I and sends an off-hook signal to the boat P103 of the controller C1.
The output of the hook state detection means 231 and the station line button T
When BI is pressed, a press signal is sent to P121, and the AND with the output of the station line button state detection means 401 is the gate G.
4, the relay control device 141 is activated through P119 via the station line switching relay control means 391, and the relay contact C is set to the B side. As a result, a DC closed loop is formed for the office line by the bridge 101, the pulse transmitter 111, and the speech network 5NW 121. When the numeric keypad KBI is pressed, a selection signal is generated by the dialer 131 and sent to the pulse transmitter 111 to transmit central office line transmission data as a selection signal for the central office line.

In addition, as described in (C) by game) G4, set the office line call flag of controller C1 and controller C2, and set the office line call indicator light LED 11 of the intercom telephone hybrid device 10 and the office line call of the intercom telephone hybrid device 20. The indicator light LED 21 is lit to indicate that the central office line is in use.

Intercom telephone hybrid 20 operates in the same manner as intercom telephone hybrid 10 (FIG. 7).

(f) When the doorphone is called, the call detector 121 detects the call by pressing the call water button of the doorphone 53, and the controller CI's baud)P
A call signal is sent from 2O3 to doorphone call detection means 271. As a result, the door phone call flag of the controller CI is set, and the chime IC 131 is triggered by P2O3 via the chime trigger means 241 to generate a chime signal. This chime signal is the amplifier 19
1 is amplified and supplied to the speaker 13 through the mixing circuit 81 and the volume adjuster 91, causing the speaker 13 to sound. Also,
A signal is sent from the data transmitting means 341 to the intercom/telephone hybrid device 20 and the intercom 3o through the boat P108 and the data transmitter/receiver 181, and the door phone call flags of the controllers C2 and C3 are set, and a chime sound is emitted similarly to the intercom/telephone hybrid device 10. It makes a sound (Figure 8).

(g) When answering the doorbell, the controllers 01 to 3 use the timer means 281 to
The doorbell call flag is set for a certain period of time after the doorbell call occurs, but is reset after that time and the system enters a standby state. Therefore, the handset 16.
Even if I pick up 26.36.46, I can't respond.

<Response of the intercom telephone hybrid device IO> If the handset 16 is picked up while the intercom call flag is set, a baud is generated by the hook switch H9I) Signal from the hook state detection means 231 via P2O3 and the timer means 28
A logical AND with the output of 1 is generated by gate G6, and the intercom call flag is set by the intercom call means 301, the intercom call flag is reset, and the holding means 291 is held. A signal is sent to the current source driving means 211 by setting the doorbell call call flag, and the current source E11 is activated via Plot, and the current source E11 is activated through the M side of the relay contact C to the bridge 101. Pulse transmitter 1
11. Power is supplied to the speech circuit by the speech network 5NW121. At the same time, P2O3 closes the analog switch 171 to connect the hybrid circuit 161,
A door phone call system is realized by connecting a door phone call circuit including an amplifier 131, an amplifier 141, and a hype circuit 151 to a call circuit including a bridge 101, a pulse transmitter 111, and a speech network 5NW 121. By setting the intercom telephone call flag of the controller CI by the intercom telephone hybrid device 10, the data transmitting means 341,
Baud) P2O3, through the data transceiver 181, reset the intercom call flag of the controller C2 of the intercom/telephone hybrid device 20 and the controller C3 of the intercom 30, and set the intercom call flag.

Also, depending on the doorphone call flag, the controllers C1, C2, and C3 of the intercom telephone hybrid device 10, the intercom telephone hybrid device 20, and the intercom 30 are set to
Extension call indicator LED 1 by IB, P2BSP3B
2. The LED 22 and LED 32 light up to indicate that an extension call is in progress.

<Intercom telephone hybrid device 2Q, intercom 30
Response> Similar to the intercom telephone hybrid device 10, the intercom telephone hybrid device 20 and the intercom 30 reset the door phone call flags of the controllers C2 and C3 and set the door phone call flag (FIG. 8).

(h) At the end of the doorphone call When the handset 16 is put down in the intercom/telephone hybrid device IO, an on-hook 1 word is sent by the hook switch HSi boat P103 to the hook state detection means 231 of the controller CI, and the doorphone call flag is reset. Therefore, the analog switch 17 due to pH07
1 is in an open state. Also, the intercom/telephone hybrid device 20 and the doorphone call flag of the intercom 3o are reset through the data transmitter/receiver 181.

Intercom telephone Il hybrid device 20, intercom 30
operates in the same manner as in the case of intercom telephone hybrid device t10 (FIG. 8).

(i) During intercom calls and calls, the intercom telephone hybrid device IO, intercom telephone hybrid device 20, and intercom 30 are used as indoor units for intercom calls and calls) (PIIO, Pil) of controllers C1, C2, and C3.
The machine number is set by own station number reading means 371 via l. That is, the intercom telephone hybrid device 10 has N
ol, intercom telephone hybrid device 20゛, intercom 30 is set to 2 to 6 by number setting switches NSI and NS2.
number has been assigned.

A case where the intercom telephone hybrid device 10 calls the intercom telephone hybrid device 20 and makes a conversation will be explained (
Figures 9-10).

When the intercom telephone hybrid device IO picks up the handset 16 and presses any channel selection switch (other than its own station), the output of the hook state detection means 231 via the boat P103 of the controller C1 and the boats P117, PI 16, and P11 are transmitted.
5, P114, key manual number reading means 4 via pH3
A logical product with the output of bridge 101 . The pulse transmitter 111 supplies current to the communication circuit by the speech network 5NWI21. At the same time, the logical product of the output of G5 and the output of the key manual number reading means 441 is C7
P2
O3 sends a signal from the data transceiver 181 indicating that the extension line is in use, sets the indoor call flag of other machines, and returns to boat P.
Extension call indicator LED22, LED by 2B and P3B
32 to indicate that the extension is in use.

Also, key manual number reading means 441, game) C7, data transmitting means 341, board) P2O3, data transceiver 181
The unique channel selection data transmitted from the controller is received by the data receiving means 351 from the boat P109 of the controller of the other device, and the comparison means 361 to which the output from the data receiving means 351 and the output from the own station number reading means 371 are applied compares the own station number. If they match, for example, in the case of the intercom/telephone hybrid device 20, the time limit means 261 sets the tone trigger means 251 for a short time, and at the same time, the comparison means 361 and the extension communication means 221 also set P2O3. , the chime IC 132 is activated from the boat P20δ to generate a tone (electronic sound), this is amplified by the amplifier 192, the signal is bypassed by the mixing circuit 82 and the analog switch 162, and the loudspeaker 23 is output at maximum volume without using the volume adjuster 92. sound. Also, since the analog switch 122 is closed by the boat P2O2, the microphone 22, amplifier 172, and hybrid circuit 182 are closed after the electronic sound ends.
, amplifier 192, mixing circuit 82, analog switch 16
2. This type of hybrid device 2 uses an intercom with a speaker 23.
The loudspeaker communication circuit of No. 0 is activated, and simultaneous loudspeaker communication can be realized between the intercom telephone hybrid device 10 and the communication system.

When the intercom telephone hybrid device 20 picks up the handset 26, the hook state detection means 231 and the extension communication means 221
) P2O3 is reset and the public address system becomes inactive, but the hook state detection means 23] and the comparison means 361
A logical AND is generated at the gate G2, and the current R driving means 2
In step 11, the boat P201 is set and the current source E12 is started, and a handset/receiver communication circuit is formed by the bridge 102, the pulse transmitter 112, and the speech network 5NW122. A communication circuit is realized.

The intercom telephone hybrid 10 is an intercom 30, the intercom telephone hybrid 20 is an intercom telephone hybrid 1i110, the intercom telephone hybrid 20 is an intercom 30, the intercom 30 is an intercom telephone hybrid 10, the intercom 30 is an intercom telephone hybrid. 20, the intercom telephone hybrid device t10 also calls the intercom telephone I.
! The operation is the same as when making a call call with the hybrid device 20.

(j) When the central office line is on hold (self-hold) When the intercom/telephone hybrid device 10 presses the hold button LBI during a central office line call, the output of the hold switch state detecting means 431 and the hook state detecting means 23 from pH 8.
A logical product with the output of 1 is generated at gate G3, the latch means 411 is set, and the station line hold flag is set.
The relay control device 151 is activated by P120 from the hold relay control means 381, and the relay contact RLC1 is DC-connected by the load resistor R1. Thereafter, P119 is set by the hold relay control means 381 via the station line switching relay control means 391, and the relay control device 141
is activated, the relay contact C becomes the M example, and the communication system using the speech network 5NW121 etc. is disconnected from the office line (the office line call flag is reset). By setting the hold flag, the blinking means 321, the central line call display means 311, and the boat PIA are intermittently set, and the outside line call indicator light LED is set.
II blinks, and also sets the hold flag of the intercom/telephone hybrid device 20 through the data transmitter/receiver 181, causing only the outside line call indicator LED 21 to blink. Although the hold flag of the intercom telephone hybrid device 20 is set, it is not possible to activate the relay control device 152 and close the office line with the intercom telephone hybrid device t20 (l111) as in the intercom telephone hybrid device 1o. do not have.

The latch means 411 is reset via the switch means 421 by the on-hook detection of the hook state detection means 231, but since the switch means 421 is a circuit when the hold flag is set, the intercom telephone hybrid In the device 10, even if the handset 16 is put down and the hook switch is turned on, the hold flag is not reset and the central office line is still closed.

If the intercom telephone hybrid device IO picks up the handset 16 again when it is taken down, or presses the central office line button TBI in that state if it is not put down, the central telephone call flag is set as described in (e), and relay control is performed. device 14
1'' is activated and contact C is switched to Bm, the hold flag is reset, and the relay control device 151 is de-energized and R is turned on.
The station line closure by 1 is flashed. This returns to the original central office line communication state.

(k) When transferring to another intercom telephone hybrid device 20 after the intercom telephone hybrid device 10 presses the central telephone call hold button LBI to put it on hold, when transferring to another intercom telephone hybrid device 20, select the station selection button SBI.
Select the other party's station number. That is, boat P113, Pi
The signals sent from No. 15, P116, and pH7 control the switch means 421 via the key manual number reading means 441, and close the switch means 421. At the same time, as mentioned in (i), unique channel selection data is transmitted to the data transmitting means 341.
, baud) P 108, and calls the corresponding other device, in this case the intercom telephone hybrid device 20, to make an indoor call. Thereafter, the intercom telephone hybrid device 20
picks up the handset 26 and presses the central line button TB2, and as described above, the central line switching relay control means 391 is activated by the game) G4, and the relay control device 1 is activated through the central bank P119.
1241 to switch to the relay contact C1tB side to establish a central office line communication system, and change the central office line communication indicator lights LED21 and LED II from blinking to lighting as described in (C).

The intercom telephone hybrid device 10 has a central line call indicator light LE.
When the handset 16 is returned after confirming that the DII has changed from flashing to lit, the switch means 421 is closed, so the latch means 411 is reset by the on-hook signal from the hook state detection means 231, and the hold relay control is performed. The intercom telephone hybrid device 20 resets the means 381 and is released from the hold state and returns to the standby state.
Intercom phone number 41! The same operation is performed when holding transfer to the hybrid device 10 (FIG. 11).

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

In addition, as an embodiment of the present application, a switch means is provided for controlling the reset of the latch means for setting a hold flag in the controller function, and the switch means is closed except when a partner station number is selected by the channel selection button. By,
Although the holding state is not released even if the handset is returned after the station line is put on hold, the switch means may be omitted in another embodiment. However, in this case, when the handset is put back on hold, the hold state is canceled and the handset returns to the standby state, so it is necessary to hold the handset.

[Effects of the Invention] As is clear from the above embodiments, according to the present invention, an intercom unit and a telephone unit are respectively provided in the housing, the intercom unit is connected to the intercom line via the connector, and the telephone unit is connected to the existing telephone unit. This telephone is connected to the additional telephone office line through an outlet and a plug installed in the telephone office line,
In particular, when placing a central office line on hold, we configured the system so that when you are on self-hold, the call does not end even if you put the handset back, and when you put the handset back on hold and transfer, the call ends. It is possible to provide a high-value-added intercom telephone hybrid device that adds an indoor mutual communication function as an intercom to a parent-child telephone by directly utilizing the wiring of the telephone office line extended from this telephone for telephone use. , it has the advantage of lower cost. In particular, since it is possible to obtain an intercom telephone hybrid device that has both the function of an intercom and the function of a plug-in telephone that can be easily installed using a plug and an outlet installed in the telephone office line extended from the present telephone,
The installation work is no longer required to be carried out by only those with certain qualifications, and anyone can install it, making it simple and inexpensive to install.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an intercom telephone hybrid device according to the present invention; FIGS. 2, 3, and 4 are circuit block diagrams of the device; FIG. 5 is a functional block diagram of the controller;
Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12
FIG. 13 is a flowchart for explaining the functions of the controller, FIG. 13 is an explanatory diagram of a conventional parent-child telephone, and FIG. 14 is an explanatory diagram of a conventional home telephone. 10.20... Intercom telephone hybrid device 1
1.21... Housing 14.24... Intercom unit 15.2
5...Telephone unit 17.27...
Plug 18.28...φφ・Outlet 19...Connector L2...Telephone office line t5...Intercom line agent Patent attorney Moritani -O Bureau Zui Meiyue, Tanxi Figure 6 Bureau Watafa (8 Figure 7 Eats Taho / Call 1 oral publication λtongue (1 (1 book 1 rule))
Handset ON Station line hold/"K1" Figure 1, Figure 12, Figure 13, Procedure correction band (method) 1, Indication of incident Patent Application No. 16086/1986 2, Title of invention Intercom telephone hybrid device 3, Relationship with the case of the person making the amendment Patent applicant Aiphone Co., Ltd. 4. Date of amendment order: May 28, 1985 (shipment date) 5. Agent address: 103 ■, page 34, line 19 to the bottom of the specification ``Figure 14 is an explanatory diagram of a conventional home telephone'' is deleted. 2. Drawing 14), as shown in the attached sheet (no change in content) procedural amendment band (voluntary) August 29, 1985

Claims (1)

[Claims] An intercom characterized in that an intercom unit and a telephone unit are provided inside a housing, the intercom unit is connected to an intercom line via a connector, and the telephone unit is connected to a telephone office line via a plug and an outlet. Telephone hybrid device.