JP2543588B2 - Telephone exchange system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange system, and more particularly to a calling system of a telephone exchange system in which a telephone exchange and a plurality of terminals having a telephone function are connected. Related to the improvement of.

(Prior Art) In the conventional telephone exchange system, when an incoming signal is sent from another caller through a telephone line while the called terminal is in a call, the following various measures are taken. It was done.

That is, a signal indicating that the called terminal is busy is being sent to the calling terminal to notify the calling terminal that the called terminal is busy. By outputting a call ringing tone by superimposing it on the other party's voice in the current call, it is notified that there is an incoming call from another caller of the called terminal.
By placing the handset after the caller hooks, both parties receive the call as the called party ends the call.

(Problems to be Solved by the Invention) However, in the above-described telephone exchange system, when the telephone line is not connected due to the state in which the called terminal is not in a call, for example, it is out of the coverage area of the cordless telephone or is called. If the caller could not answer the call due to his / her convenience, the caller could not be notified, and the application of the function was naturally limited.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a caller with a call from a callee side later when the callee terminal is currently in a state of being unresponsive including a call. It is to provide a telephone exchange system capable of appropriately responding to various call-disabled states by enabling the calling of.

(Means for Solving the Problem) In order to solve the above problems, the telephone exchange system of the present invention is transmitting a call signal to a called terminal by receiving a call from the calling terminal to the called terminal. Is provided with a reply response switch operated by the called party when the called party cannot respond due to the circumstances of the called party and when the called party becomes ready to respond. Storage device for storing the terminal information of the calling side terminal as a reply code on the basis of the operation signal by the callee operating the reply response switch while transmitting the call signal. A call canceling means for canceling the sending of the call signal to the terminal is provided, and is stored in the storage means based on an operation signal of the reply response switch operated when the called terminal is in a response enabled state. Was done A calling signal sending means for sending a calling signal to the calling side terminal based on terminal information is provided.

(Operation) When a call is received from the calling side terminal sent through the telephone line and the called party cannot answer the call due to the convenience of the called party (such as during a conference), a call signal is sent to the called side terminal. When the called party operates the reply response switch while sending
In the telephone exchange, the terminal information of the calling side terminal is stored in the storage means as a reply code based on the operation signal. After this, when the called party is ready to answer the telephone and operates the reply response switch of the called terminal, a signal (operation signal) for instructing the start of a reply response is sent from the called terminal. . On the basis of this start instruction signal, the telephone exchange sends a calling signal to the calling side terminal based on the terminal information stored in the storage means. Then, when the calling side terminal responds to this calling signal, the normal call operation is performed.

That is, the telephone exchange system of the present invention allows the called party to intentionally create an unresponsive state by the operation of the reply response switch by the called party while the calling signal is being sent to the called party terminal. Has become. For example, a call during a conference may be intentionally ended on the called party side by operating the reply response switch of the called terminal, and after the conference, the reply response switch may be operated by the called party's intention. With this, it becomes possible to perform an operation such as calling the calling party.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The drawings are block diagrams showing the electrical connections of the telephone switching system of the present invention.

In the figure, 1 is a calling side terminal, 2 is a telephone exchange, and 3 is a called side terminal. The telephone exchange 2 has a transmission control circuit 21,
Incoming call control circuit 22, exchange control circuit 23, terminal memory 24, response determination circuit 25, speech path switch 26, off-hook monitoring circuit 27
And four ON / OFF switches 281, 282, 291, 292, etc. The called terminal 3 includes a telephone circuit 31, a reply response control circuit 32, a reply response switch 33, a reply response display element 34,
The receiver 35 and the hook switch 36 are provided.

The output of the calling terminal 1 is
The output is led to the input of the off-hook monitoring circuit 27 that is led to the exchange control circuit 23 and is also led to one terminal of the call path switch 26, and the other terminal of the call path switch 26 is the called terminal. It is led to the telephone circuit 31, which is a component of No. 3. On the input side of the calling side terminal 1 of the call path switch 26, the other terminal of the ON / OFF switch 281 whose one terminal is guided to the outgoing call control circuit 21 and the other terminal of the incoming call control circuit 22 are connected. The other terminal of the ON / OFF switch 291 is led to the output side of the communication path switch 26,
ON / OFF switch with one terminal led to the transmission control circuit 21
The other terminal of 282 and the other terminal of the ON / OFF switch 292, one terminal of which is guided to the incoming control circuit 22, are guided. The switching control circuit 23 is fed with the output of the transmission control circuit 21 indicating the dial operation of the calling side terminal, and the output of the response judgment circuit 25 with the return response signal from the called side terminal 3 being led to its input. Has been led. Further, the output of the exchange control circuit 23 indicating the terminal information of the calling side terminal is led to the terminal memory 24. The exchange control circuit 23 and the terminal memory 24 are bidirectionally connected, and the terminal information of the calling side terminal 1 stored in the terminal memory 24 is appropriately read by the exchange control circuit 23. The output of the exchange control circuit 23 for instructing the sending of the incoming signal is led to the incoming control circuit 22, and the output of the exchange control circuit 23 for instructing the control of outgoing is led to the outgoing control circuit 21. Although illustration is omitted, the exchange control circuit 23 includes a communication path switch 26.
It also controls the opening and closing of the four ON / OFF switches 281, 282, 291, 292.

The transmission control circuit 21 has a function of detecting a dial signal from the calling side terminal 1, and also has a function of transmitting a dial tone and a function of transmitting a ringing tone according to the control from the exchange control circuit 23. It has a function of sending a reply response signal to the calling terminal 1. The incoming call control circuit (paging signal sending means) 22 has a function of sending a paging signal and a function of confirming a reply response to the called terminal 3 under the control of the exchange control circuit 23.
The exchange control circuit 23 decodes the dial signal of the calling side terminal 1 detected by the transmission control circuit 21. Also, the exchange control circuit 23
Has a function of writing as a reply code together with the terminal information of the calling side terminal in the storage area of the terminal memory 24, and based on the judgment signal from the response judgment circuit 25,
Terminal information read from terminal memory 24, transmission control circuit
It has a function of controlling the operation of the incoming call control circuit 21 and the incoming call control circuit 22, and controlling the opening / closing of the communication path switch 26 and the ON / OFF switches 281, 282, 291, 292.

On the other hand, the two terminals of the reply response control circuit 32, which is a component of the called side terminal 3, are led to the respective terminals of the reply response switch 33 operated when making a reply, and indicate a reply response signal. The output of the reply response control circuit 32 is the telephone circuit.
Guided by 31. Further, the reply response control circuit 32 is connected with a reply response display element 34 including an LED or the like indicating that the reply response switch 33 has been pressed, and the telephone circuit 31 transmits and receives a call to the called party. A handset 35 for performing the call is provided, and a hook switch 36 that is off-hook by picking up the handset 35 is provided.

Next, the operation of the telephone exchange system having the above configuration will be described by dividing it into a normal connection operation and a connection operation according to the present invention.

 First, a normal connection operation will be described.

In the state before operation, the communication path switch 26 and ON / O
The FF switches 281, 282, 291, 292 are all off.

In this state, if there is a call from the calling terminal 1, the off-hook monitoring circuit 27 detects this and notifies the exchange control circuit 23 of the detection of the call. The exchange control circuit 23 sets the ON / OFF switch 281 to the ON state based on the signal from the off-hook monitoring circuit 27, and sets the transmission control circuit 21 to the calling side terminal 1
Then, the transmission control circuit 21 sends a dial tone to the calling side terminal 1. When the transmission control circuit 21 detects the dial operation of the calling side terminal 1, the exchange control circuit 23 decodes it and connects to the corresponding called side terminal 3.
That is, when the ON / OFF switch 292 is turned on, the incoming call control circuit 22 is connected to the telephone circuit 31 of the called terminal 3 and a call signal is sent to the telephone circuit 31. At the same time, the calling control circuit 21 sends a ringing tone to the calling terminal 1. Upon receiving the ringing signal, the called terminal 3 outputs a ringing tone from a ringing tone output circuit (not shown). As a result, the called party can know that there is an incoming call. By picking up the handset 35, the hook switch 36 is turned on and an off-hook response is made. The signal indicating the off-hook response is input from the telephone circuit 31 to the response determination circuit 25 of the exchange 2, and the determination signal is input to the exchange control circuit 23. In the exchange control circuit 23, based on this determination signal, the sending of the ringing signal from the incoming call control circuit 22 and the sending of the ringing sound from the outgoing call control circuit 21 are stopped, and the ON / OFF switches 281,292 are set to the OFF state. The incoming call control circuit 22 and the outgoing call control circuit 21 are disconnected from the line 41, and the speech path switch 26 is turned on. This enables a call between the calling party and the called party.

Next, the operation when the called terminal is currently unable to respond to an incoming call from the calling party for the various reasons described above will be described.

Also in this case, in the state before the operation, the speech path switch 26 and the ON / OFF switches 281, 282, 291, 292 are all in the OFF state.

If there is a call from the calling terminal 1 in this state,
The off-hook monitoring circuit 27 detects this, and the exchange control circuit 23
Notify the detected call to The exchange control circuit 23 is turned on / off based on the signal from the off-hook monitoring circuit 27.
The switch 281 is turned on, the calling control circuit 21 is connected to the calling terminal 1, and the dial tone is sent from the calling control circuit 21 to the calling terminal 1. Then, when the transmission control circuit 21 detects the dial operation of the calling side terminal 1, the exchange control circuit 21
23 decodes this and connects to the corresponding called side terminal 3. That is, when the ON / OFF switch 292 is turned on, the incoming call control circuit 22 is connected to the telephone circuit 31 of the called terminal 3 and a call signal is sent to the telephone circuit 31. At the same time, the calling control circuit 21 sends a ringing tone to the calling terminal 1. When the called terminal 3 receives the calling signal, the called sound output circuit (not shown) outputs the calling sound. In this case, however, the called terminal 3 cannot respond for some reason (such as during a conference). Therefore, in this state, when the callee's own intention turns on the reply response switch 33, the reply response control circuit 32 sends a reply response signal and the reply response display element 34 lights up.
This reply response signal is passed through the telephone circuit 31,
It is input to the response determination circuit 25 of the exchange 2, and the determination signal is input to the exchange control circuit 23. Based on this determination signal, the exchange control circuit 23 stops the sending of the ringing signal from the incoming call control circuit 22 and sends a confirmation signal from the incoming call control circuit 22 to the called terminal 3, Confirm the reply response. After this, the exchange control circuit 23 turns ON / OFF.
The switch 292 is turned off, and the terminal information of the calling terminal 1 and the dial signal are stored in the terminal memory 24 as a reply code. Further, the transmission control circuit 21 sends a reply response signal to the calling side terminal 1. The calling terminal 1
After receiving this reply response signal, the switch control circuit 23 turns off the ON / OFF switch 281 to disconnect the transmission control circuit 21 from the line 41. In this way, the other party's terminal information to be returned is stored in the terminal memory 24.

After that, when the called terminal 3 makes a reply, by picking up the handset 35 of the called terminal 3, the hook switch 36 is turned on and an off-hook response is made.
This off-hook is detected by an off-hook detection circuit (not shown) and input to the exchange control circuit 23. The exchange control circuit 23 sets the ON / OFF switch 282 to the ON state based on the signal indicating the off-hook, and the transmission control circuit 2
1 is connected to the telephone circuit 31 of the called terminal 3 to send a dial tone. Here, when the reply response switch 33 of the called terminal 3 is turned on by the callee's own intention, the reply response control circuit 32 sends a reply response signal. This reply response signal is input to the response determination circuit 25 of the exchange 2 via the telephone circuit 31, and the determination signal is sent to the exchange control circuit.
Enter in 23. Based on this judgment signal, the exchange control circuit 23 retrieves the reply code stored in the terminal memory 24, reads out the joining number from the terminal information of the calling side terminal 1, and calls the calling side. Call the terminal 1.
That is, the exchange control circuit 23 turns ON the ON / OFF switch 291.
By setting the state, the incoming call control circuit 22 is set to the calling side terminal 1
And sends a calling signal to the calling terminal 1. At the same time, the exchange control circuit 23 sends a ringing tone to the telephone circuit 31 by the transmission control circuit 21. After that, when the calling side terminal 1 goes off-hook, the off-hook monitoring circuit 27 detects this and inputs this detection signal to the exchange control circuit 23, so that the exchange control circuit 23 receives from the incoming call control circuit 22. The sending of the ringing signal and the sending of the ringing tone from the outgoing call control circuit 21 are stopped, the ON / OFF switches 282, 291 are turned off, the incoming call control circuit 22 and the outgoing call control circuit 21 are disconnected from the line 41, and the communication path switch is set. 26 is turned on. After that, the exchange control circuit 23 erases the reply code stored in the terminal memory 24. This enables a call between the calling party and the called party. That is, according to the telephone exchange system of the present invention, while the calling signal is being sent to the called terminal 3, the called party intentionally creates an unresponsive state by the operation of the reply response switch 33 by the called party. It is possible. For example, the call during the conference is intentionally ended on the called party side by operating the reply response switch 33 of the called side terminal 3, and after the conference is ended, the reply response switch 33 is turned on by the intention of the called party. By the operation, the operation such as calling the calling party can be performed.

In addition, in the above-mentioned embodiment, one callee side terminal 3 is connected to the exchange 2, but a plurality of callee side terminals are connected to the exchange 2 and these are appropriately selected. It is also possible to adopt a configuration in which

Further, in the above embodiment, when the called terminal 3 cannot respond, the calling terminal 1 is notified by the reply response signal, but the notification can be omitted.

Further, in the above embodiment, the calling terminal 1 is also described as an extension in the exchange, but the present invention can be applied to the case where the call is made from the outside which the exchange is not aware of. In this case, the dial tone at the time of calling is the second dial tone, the dial at the time of calling is the extension number of the called side terminal 3, and the stored terminal information of the calling side is the sending of the above-mentioned reply response signal. As the content to be notified to the calling terminal, the message "I will call you later, please press the telephone number" is sent, and the call control circuit 21 receives the signal dialed by the caller and the exchange control circuit 23 decodes it. It becomes possible to handle this by making it a telephone number.

Furthermore, by storing a large amount of information in the terminal memory 24, it is possible to provide the reply response with a selection function.

(Effects of the Invention) As described above, according to the present invention, the called party is aware of the state in which the called party cannot respond by operating the reply response switch while the called signal is being sent to the called side terminal. It is possible to create it. For example, a call during a conference is intentionally ended on the called party side by operating the reply response switch of the called terminal, and after the conference,
By operating the reply response switch according to the intention of the called party, it is possible to perform an operation such as calling the calling party. In addition, it is possible to save the trouble of the calling side making a call again, which is useful for improving the service.

[Brief description of drawings]

The drawings are block diagrams showing the electrical connections of the telephone switching system of the present invention. DESCRIPTION OF SYMBOLS 1 ... Calling side terminal, 2 ... Exchanger 3 ... Called side terminal, 41, 42 ... Line 21 ... Originating control circuit, 22 ... Incoming call control circuit 23 ... Exchange control circuit, 24 ... Terminal memory 25 ... Response determination circuit 27 ... Off-hook monitoring circuit, 31 ... Telephone circuit 32 ... Reply response control circuit 33 ... Reply response switch

Claims (1)

(57) [Claims] 1. A system for connecting a calling side terminal and a called side terminal by a telephone exchange, wherein the called side terminal receives a call signal from the calling side terminal to the called side terminal. When the called party cannot respond due to the circumstances of the called party while sending the call, and when the called party becomes ready to respond, a reply response switch operated by the called party is provided. Storage means for storing the terminal information of the calling side terminal as a reply code based on the operation signal by the called party operating the reply response switch while sending a calling signal to the side terminal, A call canceling unit for canceling the transmission of a calling signal to the called terminal is provided, and based on the operation signal of the reply response switch operated when the called terminal is in the response enabled state, Record A telephone switching system comprising: a calling signal sending means for sending a calling signal to the calling side terminal based on the terminal information stored in the storing means.