KR100264541B1 - Automatic line possesive apparatus of telephone - Google Patents

Abstract

PURPOSE: An apparatus for automatically occupying a line of a telephone is provided to automatically occupy the line with the termination signal without an additional operation of a line selection switch by a user. CONSTITUTION: The apparatus for automatically occupying a line of a telephone includes a number of termination sensor(20a,20b) for outputting a ring sensing signal by sensing a ring signal input from a number of lines, controller(10) for outputting a line occupation control signal according to the ring sensing information data transmitted from the termination sensor(20a,20b), a line occupation controller(30) for controlling a line occupying operation according the line occupation control signal transmitted from the controller(10), and a number of relays (RY1,RY2) for connecting the line to the transceiver (40) according to the line occupation controller (30).

Description

Automatic line occupancy of the telephone

1 is a circuit diagram of an automatic line occupation apparatus for a telephone according to the present invention.

* Explanation of symbols for main parts of the drawings

10: control unit BD1, BD2: bridge diode

RY1, RY2: Relay 20a, 20b: Incoming detector

30: Line occupancy control unit PC1, PC2: Photo coupler

40: Handset TR1 to TR6: Transistor

HS: Hook Switch L1, L2: Inductor

VDD: Power R1 ~ R10: Resistance

Dl, D2: Diodes C1, C2: Capacitance

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line occupancy apparatus in a telephone in which a plurality of trunk lines are connected, and more particularly, to an automatic line occupancy apparatus in a telephone to automatically occupy a line with an incoming signal when an incoming call is received.

Conventionally, when a call from the outside occurs in a telephone connected with two or more trunk lines, the user checks the incoming lamp or sound to determine the line with the incoming signal, and then directly operates the line selection switch to occupy the corresponding line. There was a lot of inconvenience in use, and there was a problem such as cumbersome installation because the phone must be equipped with a separate line selection switch.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an automatic line occupancy apparatus of a telephone to automatically occupy a line with an incoming signal even when a user does not operate a separate line selection switch.

In order to achieve the above object, the present invention provides a plurality of call detection units 20a and 20b for detecting ring signals input from a plurality of lines and outputting ring detection information; A control unit 10 for outputting a line occupation control signal according to ring detection information supplied from the incoming call detection unit 20a or 20b: controlling the line occupation operation according to the line occupation control signal supplied from the control unit 10; Line occupation control unit 30 and: Automatic line occupation of the telephone, characterized in that it comprises a plurality of relays (RYl, RY2) for connecting the line to the handset 40 under the control of the line occupation control unit (30). Provide the device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram of an automatic line occupation apparatus for a telephone according to the present invention.

As shown in FIG. 1, the automatic line occupation apparatus according to the present invention includes the reception detecting units 20a and 20b, the bridge diodes BD1 and BD2, the relays RY1 and RY2, the controller 10, and the handset 40. ) And a line occupancy control unit 30.

The incoming detection unit 20a, 20b is connected to the photo coupler (PC), resistors (R4, R8) and condenser (C2), and detects the ring signal from the trunk line (TIP, RING) to detect the ring detection information (RING1, RING2 is output to the input terminals RN1 and RN2 of the controller 10. The bridge diodes BD1 and BD2 constantly output signals from the trunk lines TIP and RING to the relays RY1 and RY2. The control unit 10 receives the ring detection information RING1 and RING2 transmitted from the destination detecting units 20a and 20b through the input terminals RN1 and RN2 to determine the line to which the ring signal is input and occupy the corresponding line. The line occupancy control signal is output to the line occupancy control unit 30 through the output terminals LN1 and LN2.

The line occupation control unit 37 is composed of diodes D1 and D2, transistors TR3 and TR4, inductors L1 and L2, and resistors R6 and R7, and a line occupation control signal supplied from the controller 10. Control of the trunk line is controlled by controlling the relays RY1 and RY2.

When the ring signal is supplied from the line 1, the photo coupler PC of the incoming detection unit 20a operates to output the ring detection information RING1 to the input terminal RN1 of the controller 10. The control unit 10 recognizes that the incoming call is received from the line 1 according to the ring detection information RING1 supplied from the incoming call detection unit 20a to the input terminal RN1, and then the hook switch HS is turned on. When the high level potential is applied through the output line LN1, the high level line occupation control signal is output to the transistor TR3 of the line occupation control unit 30 through the output terminal LN1. Accordingly, when the transistor TR3 operates to generate a magnetic field in the inductor L1, the contact c and the contact a of the relays RY1 and RY2 are connected. At this time, since the line 1 is connected to the handset 40, the user can talk to the caller of the line 1.

When the ring signal is supplied from the line 2, the photo coupler PC of the incoming detection unit 20b operates to output the ring detection information RING2 to the input terminal RN2 of the control unit 10. The control unit 10 recognizes that the incoming call is received from the line 2 according to the ring detection information RING2 supplied from the incoming call detection unit 20b to the input terminal RN2, and then the hook switch HS is turned on through the input terminal HSP. When the high level potential is applied, the high level line occupation control signal is output to the transistor TR4 of the line occupation controller 30 through the output terminal LN2. Accordingly, when the transistor TR4 operates to generate a magnetic field in the inductor L2, the contact c and the contact b of the relays RY1 and RY2 are connected. At this time, since the line 2 is connected to the handset 40, the user can talk to the caller of the line 2.

As described above, the present invention can significantly improve the convenience of using the phone because the telephone line having two or more trunk lines automatically connects the corresponding line generated when a call from the outside occurs.

Claims (2)

An automatic line occupancy apparatus of a telephone, comprising: a plurality of call detection units (20a, 20b) for detecting ring signals input from a plurality of lines and outputting ring detection information; A control unit (10) for outputting a line occupation control signal in accordance with ring detection information supplied from the incoming call detection unit (20a, 20b); A line occupation control unit 30 for controlling the line occupation operation according to the line occupation control signal supplied from the control unit 10; And a plurality of relays (RY1, RY2) for connecting the line to the handset (40) under the control of the line occupation control unit (30). 2. The automatic telephone apparatus according to claim 1, wherein the line occupation control unit 30 generates a magnetic field for operating the relays RY1 and RY2 in accordance with the line occupation control signal supplied from the control unit 10. Line occupation device.