KR19990025963A - Key phone and general telephone matching device - Google Patents

Abstract

The present invention relates to a key phone system device that can be used in common with a telephone phone and a general telephone, in particular, when the off-hook signal is applied from the telephone by connecting the terminal (general telephone) and the control unit 40 (photocoupler ( 11) by connecting the first interface unit 10 to inform the CPU 12 of the control unit 40 that the input signal is a general telephone, the terminal (key phone) and the control unit 40, and is applied from the key phone The second interface unit 20 to inform the CPU 12 that the data inputted to the CPU 12 is inputted from the key-phone telephone, and the first interface unit 10 and the second interface unit. The multiplexer 30 selects the first applied signal from the signals applied from the 20 and applies the signal to the controller 40, and the controller 40 receives a signal from the multiplexer 30 to control and process the signal. )Wow; Key phone telephone and general telephone matching device, characterized in that it comprises a relay unit 50 is connected to ring the ring of the telephone under the control of the control unit 40, whether the key phone telephone or general The phone has the effect that you can use whatever you choose.

Description

Key phone and general telephone matching device

The present invention relates to a key phone system device that can be used in common with a key phone phone and a general phone, in particular, the interface unit of the key phone and the phone unit by combining the combination of the key phone system and the general phone in combination with one key phone system It is intended to be used.

In general, the key phone system has a circuit for connecting a key phone telephone and a general telephone independently, so that only a key telephone telephone should be connected to a port for accepting a key telephone telephone, and only a general telephone is connected to a port for receiving a telephone. There was a problem in that the number of communication equipments had to be increased to accommodate all subscribers.

An object of the present invention is to solve the above-mentioned conventional problems. Particularly, since a key phone telephone and a general telephone interface circuit are included in one subscriber circuit, a user who uses the key telephone system can use a key telephone telephone or a general telephone as desired. The present invention provides a key phone and a general telephone matching device that can be selected and used.

In order to achieve the above object, a key phone telephone and a general telephone matching device of the present invention connect a terminal (regular telephone) and a control unit to operate a photocoupler when an off-hook signal is applied from a telephone. Connects the first interface unit to inform the central processing unit (CENTRAL PROCESSING UNIT, hereinafter referred to as CPU), the terminal (key phone phone) and the control unit, and applies a signal applied from the key phone phone to the CPU to A second interface unit notifying that the signal is input from the key-phone telephone, a multiplexer which selects a first applied signal among the signals applied from the first interface unit and the second interface unit, and applies a signal to the controller; and a signal from the multiplexer A control unit for receiving the control signal and controlling the signal; It is characterized in that it comprises a relay unit which is connected to ring the ring of the phone under the control of the control unit.

1 is a block diagram for matching the key phone telephone and the general telephone of the present invention;

2A is an interface diagram of a general telephone and a key-phone telephone of the present invention;

2b is a control diagram of a key phone telephone and a general telephone matching device of the present invention;

Figure 2c is a view of the relay unit of the present invention phone phone and telephone matching device.

* Explanation of symbols on the main parts of the drawing

10: first interface unit 20: second interface unit

30: multiplexer 40: central processing unit

50: relay unit

Hereinafter, with reference to the accompanying drawings, for example an embodiment according to the technical idea of the present invention phone phone and general telephone matching device configured as described above in detail as follows.

(Example)

1 is a block diagram for enabling any phone of a key phone and a general phone to be connected to a port in a key phone system, and VT1 (a) and VR1 (a ') transmit voice signals of a general phone and a key phone. The first interface unit 10 is connected to the telephone base as a losing line, and when the user picks up the handset of the general telephone between the terminal (general telephone) and the control unit 40, the hook-switch is turned off and the photocoupler 11 is connected. To apply a HIGH signal to the CPU 41 of the control unit 40 shown in FIG. 2B, and DR1 (b) and DT1 (b ') are lines connected to the port of the keyphone telephone. And the data transmission between the key phone system and the second interface unit 20, which connects the terminal and the control unit 40 between the terminal (key phone) and the control unit 40, and provides a signal applied from the key phone. 2B CPU (41 ) To indicate that the data input to the CPU 41 is input from the key-phone telephone. In the multiplexing unit 30, first of the signals applied from the first interface unit 10 and the second interface unit 20 is applied. The signal is selected and the signal is applied to the controller 40. The control unit 40 cuts and processes the signal applied from the multiplexing unit 30, and the relay unit 50 generally configures the present embodiment by ringing a telephone ring under the control of the control unit 40. .

FIG. 2A is a circuit diagram showing a first interface unit 10, which is an interface of a general telephone, a second interface unit 20, and a multiplexer 30, which is an interface of a key phone, and a first interface unit 10, which is a general telephone interface. A relay 11 for informing a general telephone to a voice signal or a ring signal; A first transistor (12) switched to apply a current applied from a power supply to the relay (11); A diode 13 for rectifying the signal applied from VT1 (a ') and applying it to the base terminal of the second transistor 14; A second transistor (14) for switching to apply a signal applied from the diode (13) to a photocoupler (15); A photocoupler 15 for applying a signal state of a general telephone to the CPU 41 of the control unit 40 shown in FIG. 2B; A capacitor 16 for regularly charging and discharging so as to constantly transmit current to the transformer 18; The primary, that is, the winding has a voltage of 24V applied from the power supply section, and the secondary winding has a voltage of 5V, while the transformer 18 is connected to the X-point shown in FIG. It consists of

On the other hand, the second interface unit 20, which is an interface of the key-phone telephone, includes a variable resistor 21; A transformer 22; Resistor R11; It consists of a third transistor 23 which switches via the multiplexer 30 to apply data of the keyphone system applied from the CPU 41 of the control unit 40 shown in Fig. 2B to the keyphone telephone.

Then, the multiplexing unit 30 is the M1 (31) for applying the data applied from the control unit 40 of the key phone system to the key phone or a general telephone and the data applied from the general telephone or key phone telephone to the control unit of the key phone system. It consists of M2 32 for application.

FIG. 2B is a circuit diagram of the key phone system controller 40, which determines whether an input signal is a signal input from a general telephone or a signal input from a key telephone telephone, and controls a control signal to control the telephone according to the input signal. And a CPU 41 for applying a signal for controlling the relay unit 51 of the general telephone; A diode 42 for down voltage applied from the multiplexer 30 shown in FIG. 2A; A fourth transistor 43 which pulls a current input to the inverter to ground to apply a high signal to the inverter 44 and switches the high signal to be applied to the CPU 41; An inverter 44 for inverting the low signal to the high signal as the high signal applied to the fourth transistor 43 is conducted; It consists of an OR gate 45.

As shown in FIG. 2C, the relay unit 50 of the phone receives a signal applied from the CPU 41 of the control unit 40 and receives a signal from the CPU 41 to operate the relay 52. Distributing unit 51 for distributing the; According to the signal from the distribution unit 51 is composed of 10 relays 52 for connecting a general telephone to the key phone system and to establish a communication path.

Hereinafter, the operation of the present embodiment will be described with reference to the operation of the key phone system configured as described above in connection with a telephone (not shown).

First, look at the circuit operation of the key phone system when making a call to the other party using a general telephone in the place where the key phone system is installed,

As shown in Fig. 2A, when the subscriber picks up the telephone of the telephone, the hook switch is turned off, so that a voltage of 24 V at the second interface 20 is applied to the relay 11 via the variable resistor 21. The current is applied to the emitter terminal of the first transistor 12. The current applied to the emitter terminal of the first transistor 12 is connected to the anode ANODE to VT1 when the switches 4 and 6 of the relay 11 connected to the collector terminal of the first transistor 12 are connected. The signal is rectified in the diode 13 to be applied to the base terminal of the second transistor 14. The signal of VT1 (a ') is connected to the collector terminal of the second transistor 14 so that the VT1 (a') signal is applied to the collector so that the second transistor 14 becomes conductive and the photocoupler 15 is operated. It will supply current to ordinary telephone.

As the photocoupler 15 is operated, the signal is passed through the M2 32 of the multiplexer 30 to lower the voltage at the diode 42 of the control unit 40 shown in FIG. 2B, and thus the base of the fourth transistor 43. Applied to the terminal.

As the signal is applied to the base terminal of the fourth transistor 43, the fourth transistor 43 becomes conductive and the low signal is applied to the inverter 44.

Before the fourth transistor 43 is conducting, a high signal is input to the input terminal of the inverter 44, but when the fourth transistor 43 is conducting, the signal falls into a round through the fourth transistor 43. The low signal is applied to the input of electricity.

The low signal applied to the inverter 44 is outputted as a high signal through the inverter 44 and input to the CPU 41. Then, the CPU 41 recognizes the signal of the general telephone at the high level.

Then, when the user enters the phone number, the phone number is the X-point shown in FIG.

Now look at the flow of the signal applied to the general telephone in the key phone system as follows.

First, when a call is received from the other party, when the signal is applied from the CPU 41 of FIG. 2B to the relay unit 50 of FIG. 2C, the signal is input according to the signal input from the distribution unit 51 of the relay unit 50. When distributed to a relay, the relay is activated and the ring source is turned on so that a call is received.

On the other hand, looking at the path for transferring data from the key phone telephone to the CPU 41 of the key phone system, the transformer having a primary voltage of 24 V and a secondary voltage of 5 V through the DT1 (b ') line for data communication in the key phone telephone Passed through 22a is applied to M2 32 of multiplexer 30 via resistor R11.

The signal applied to the M2 32 of the multiplexer 30 is transmitted to the diode 42 of the controller 40. In the diode 42, the input voltage is lowered to be applied to the base terminal of the fourth transistor 43. When the fourth transistor 43 is turned on, the signal is input to the CPU 41 via the flip-flop 46.

On the other hand, the movement of data from the CPU 41 of the key phone system to the key phone is as follows. The signal applied from the CPU 41 of the control unit 40 passes through the OR gate 45 of the multiplexing unit 30. It is input to M1 (31).

The data of the keyphone system applied by M1 31 of the multiplexer 30 passes through the fifth transistor 23 and then through the transformer 22b to enter data into DR1 (b) which is a data communication line. The data of the CPU 41 is read at a period of 40 ms.

As mentioned above, the signal flow between the general telephone and the key phone system and the data transmission path between the key phone and the key phone system have been described, and now the flow of the voice signal will be described.

When one's own phone and the other's phone are connected to each other, the voice signal is charged and discharged regularly, and the capacitor 16 is applied to the transformer 18 to constantly transmit current. It has a voltage of 24V and the secondary winding is connected to the X-point via a transformer 18 which connects the X-point shown in FIG. 1 and makes a way to talk with the other party while maintaining the voltage of 5V. Open a channel to talk with the other party.

As described above, the key phone telephone and the general telephone matching device of the present invention include a key phone telephone and a general telephone interface circuit in one subscriber circuit, so that a key phone telephone or a general telephone can be connected, that is, a port accommodating subscribers. Either a key phone or a regular phone, the user can choose to use the effect.

Claims (6)

When the off-hook signal is applied from the general telephone by connecting the terminal (general telephone) to the control unit, the first interface unit for notifying the CPU that the input signal is a general telephone by operating the photocoupler, and the terminal (key phone telephone) and the control unit And a second interface unit for informing that the data input to the CPU is inputted from the key phone telephone by applying a signal applied from the key phone telephone to the CPU, and a signal applied from the first interface unit and the second interface unit first. A multiplexer for selecting a signal and applying a signal to the controller; Key phone telephone and general telephone matching device, characterized in that it comprises a relay unit connected to ring the ring of the phone under the control of the control unit. 2. The apparatus of claim 1, wherein the first interface unit comprises: a relay for informing a general telephone to a voice signal or a ring signal; A first transistor for switching a current applied from a power supply to the relay; A diode which rectifies the signal applied from VT1 (a ') and applies it to the base terminal of the second transistor; A second transistor for switching to apply a signal applied from the diode to a photocoupler; A photocoupler for applying a state of a general telephone to a CPU of the key phone system; A capacitor for regularly charging and discharging to deliver a constant current to the transformer; The primary, that is, the winding has a voltage of 24V applied from the power supply, and the secondary winding has a voltage of 5V, and includes a transformer that connects the X-points and makes a way to talk with the other party. Key phone telephone and regular telephone matching device. The display device of claim 1, wherein the second interface unit comprises: a variable resistor; With a transformer; Resistance; And a third transistor for switching to apply the data of the keyphone system applied from the CPU of the control unit to the keyphone telephone via the multiplexing unit. 2. The apparatus of claim 1, wherein the multiplexing unit comprises: M1 for applying data applied from the control unit of the key phone system to a key phone telephone or a general telephone, and M2 for applying data applied from a general telephone or key phone telephone to the controller of the key phone system. Key phone telephone and regular telephone matching device, characterized in that configured to include. The apparatus of claim 1, wherein the controller determines whether an input signal is a signal input from a general telephone or a telephone telephone, and applies a control signal to control the telephone according to the input signal. A CPU for applying a signal for controlling the relay unit of the general telephone; A diode for dropping a voltage applied from the multiplexer; A fourth transistor for pulling a current inputted to the inverter to ground to apply a high signal to the input terminal of the inverter and switching the high signal to be applied to the CPU; An inverter for inverting and applying the high signal applied to the on / off of the fourth transistor to the CPU; Key phone telephone and regular telephone matching device, characterized in that configured to include an OR gate. The apparatus of claim 1, wherein the relay unit comprises: a distribution unit which receives a signal applied from a CPU of the controller and distributes a signal applied from the CPU to operate the relay; And a predetermined relay configured to connect a general telephone with a key phone system in accordance with a signal applied from the distribution unit and to establish a communication path.