JPH09266512A - Telephone line switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telephone line switch which can eliminate connection trouble and prevents unnecessary wrong connections when a telephone set and a communication device are both provided for one telephone line. SOLUTION: A line path from a telephone line A is provided with a 1st relay switch 1 and when the switch is off, the telephone set C is connected. When the 1st relay switch 1 is on, a communication KARAOKE device D is connected through a 2nd relay switch 2. The 1st and 2nd relay switches 1 and 2 are operated by a controller 4 with a timer 5. When the 2nd relay switch 2 is off, a connection with a dummy circuit 3 is made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone line switching device used when a telephone and another communication device are provided in parallel for one telephone line, for example, a telephone and a communication karaoke device. When installing in parallel on one telephone line,
The present invention relates to a telephone line switching device used to automatically switch the connection direction.

[0002]

2. Description of the Related Art A communication karaoke apparatus is designed to input / output data from / to a headquarters by using a telephone line at midnight after the business hours of a store. Therefore, conventionally,
A manual switch is attached to the telephone line so that it is connected to the telephone during business hours of the store so that it can be switched to the karaoke side before returning home after business.

[0003]

However, in the case of the conventional manual type switching device, switching is often forgotten after the store is closed, which causes a problem that data cannot be input / output from the Karaoke headquarters. Later, when a customer calls the store, it leads to the karaoke side,
There is a drawback that the customer loses the telephone bill.

In view of the above points, the present invention is to provide a telephone line switching device that can eliminate troubles such as forgetting to switch by automatically performing switching. Further, the present invention is to provide a telephone line switching device which prevents an incoming call when a call is made from another while the telephone line is connected to the non-telephone side.

[0005]

The technical means of the telephone line switching device of the present invention is to operate two relay switches, a first and a second relay switch provided in a line path, and these relay switches. The control device, a timer that sends time information to the control device, and an incoming call detection device that detects a call from outside and sends a signal to the control device. The telephone line and the telephone are the first relay switch. The telephone line is connected to the other communication device via both the first and second relay switches, and when the first relay switch is OFF, the telephone line is connected to the telephone. When the first relay switch is ON, the second relay switch is turned ON after a certain holding time from the incoming call so that the telephone line is connected to another communication device.

Further, the dummy circuit may be connected when the second relay switch is OFF. Furthermore, a hook monitoring device may be attached to the line path to detect whether or not a call is in progress.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. In the figure, A is a telephone line, B is a switch, C is a telephone, and D is a communication karaoke device. The input side of the switch B is connected to the telephone line A via an appropriate connector e.
Connected to. Further, the output side of the switch B is connected to the telephone C and the communication karaoke apparatus D via appropriate connectors f and g, respectively.

The switch B incorporates the first relay switch 1, and when the switch 1 is OFF, the telephone line A is connected to the telephone C. Also, the second relay switch 2 is connected to the ON side of the first relay switch 1, and when the second relay switch 2 is ON, the telephone line A is connected to the communication karaoke D. A dummy circuit 3 is connected to the OFF side of the second relay switch 2.

A control device 4 turns ON / OFF the first and second relay switches 1 and 2. 5 is a timer,
Send time information to the controller 4. The set time of the timer 5 can be freely adjusted. 6 is an incoming call detection device, which detects an incoming call from the outside,
Signal to the control device 4. Reference numeral 7 is a hook monitoring device, which detects that a telephone call is in progress and informs the control device 4 of the signal.

Next, an operation example of the line switch will be described. During daytime store operation, the first relay switch 1
Is off and the line is connected to phone C. Therefore, all telephone calls received from outside will be received by the telephone set C. Then, the first relay switch 1 is turned on according to an instruction from the control device 4 at midnight when the store is closed. The switching time is designated by the timer 5. The switching setting time of the timer 5 can be freely adjusted. For example, when the start time is set to 1 am and the return time is set to 9 am, the first relay switch 1 is turned off from 1 am every day. It switches to ON, and automatically switches from ON to OFF at 9 am.

The second relay switch 2 is normally off. Therefore, when a call is made from the outside while the first relay switch 1 is turned on, the call is connected to the dummy circuit 3. When it is connected to the dummy circuit 3, the temporary reception is internally performed, so that the ringing tone of the telephone C is not emitted.
However, since it is not officially received, there is no telephone charge.
Further, when an incoming call is received from outside, the incoming call detection device 6 detects the call and informs the control device 4 of the signal. The control device 4 turns on the second relay switch 2 after a lapse of a certain time from the arrival of the call. This hold time is timer 5
Can be adjusted by, and is usually preset to about 30 to 60 seconds. Therefore, when a customer of the store or the like makes a call from the outside, it is difficult to connect, and the call is hung up during the hold time. Therefore, the wrong connection does not damage the customer's telephone bill.

When the telephone from the outside is left in a call state for a long time and the holding time of 30 to 50 seconds elapses, the second telephone
The relay switch 2 is turned on, and the telephone line A is connected to the communication karaoke device D. Therefore, the telephone call from the head office of the online karaoke can be surely connected to the online karaoke apparatus D by waiting the holding time. When the call from the karaoke headquarters ends, the hook monitoring device 6 detects this and sends a signal to the control device 4, and the control device 4 turns off the second relay switch 2. Further, the hook monitoring device 7 detects whether or not the telephone C or the communication karaoke device D is in a call, and when communication is in progress, suspends switching of the relay switch and switches after the call.

The present invention is not limited to the above embodiment, but can be freely modified and implemented within the scope of the claims. In particular, the types of relay switches 1 and 2,
The configuration of the control device 4 is arbitrary.

[0014]

By using the telephone line switching device of the present invention, when the telephone and the other communication device are provided in parallel on one telephone line, the telephone is usually connected to the telephone and a predetermined communication is performed. The telephone line can be switched so as to automatically connect to another communication device only during the time period, and moreover, it will not be connected to another communication device until after a certain hold time has elapsed. Therefore, there is no waste of accidentally connecting a call coming from the outside to another communication device, and the telephone charge is not lost to the person making the call. Thus, the present invention makes it possible to use one telephone line extremely efficiently, and
There is no hassle of forgetting to switch or the trouble of switching, as in the past.
Very useful in practice.

According to the second aspect of the present invention, since the dummy circuit is connected during the connection holding time, the ringing tone of the telephone does not sound and unnecessary noise can be eliminated.

According to the third aspect of the present invention, since the hook monitoring device can detect whether or not a call is in progress, when a call is received from another person during the call, the call can be temporarily put on hold and connected after the call.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a telephone line switching device of the present invention.

[Explanation of symbols]

 A telephone line B switcher C telephone D communication karaoke device 1 first relay switch 2 second relay switch 3 dummy circuit 4 control device 5 timer 6 incoming call detection device 7 hook monitoring device

Claims (3)

[Claims] 1. The first and second two provided in the line path
Relay switches 1 and 2, a control device 4 for operating these relay switches, a timer 5 for sending time information to the control device, and a signal from the outside when a call is received from the outside. The telephone line A and the telephone C are connected via the first relay switch 1, and the telephone line A and the other communication device D are both first and second relay switches. When the first relay switch 1 is OFF, the telephone line A is connected to the telephone C, and the first relay switch 1 is O.
When N, the second relay switch 2 is turned ON after a certain holding time from the incoming call, and the telephone line A and the other communication device D are connected to each other. 2. The telephone line switching device according to claim 1, wherein when the second relay switch 2 is off, the dummy circuit 3 is connected. 3. The telephone line switching device according to claim 1, further comprising a hook monitoring device 7 attached to the line route, which detects whether or not a telephone call is in progress and makes a signal contact with the control device.