JPS6219014Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a centralized response device for incoming calls in a switching system constituted by a plurality of automatic exchanges.

(Prior art) In the conventional automatic switching system, incoming calls are connected using the central branch of the automatic switching system that has the line where the call was received, and the incoming call is answered and forwarded. I couldn't handle the call.
That is, it was necessary to provide a central office line relay stand for each station, and to allow the operator to respond to and transfer incoming calls.

(Problem that the invention aims to solve) For this reason, it is very uneconomical in terms of equipment and personnel costs for stations with a small volume of incoming calls, and the station line relay boards are installed in separate locations. Therefore, the drawback was that it was difficult to centrally operate and manage the exchange system.

(Means for Solving the Problems) The purpose of the present invention is to eliminate these drawbacks, and to enable centralized response processing and forwarding processing of incoming calls by a central line repeater at a specific station by simply adding a simple device. An object of the present invention is to provide a call central response device.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall system configuration of the present invention. The storage device 107 of slave station A stores information for connection control, selection signal information corresponding to the route of the external line trunk, and the like.

First, when an incoming call to the outside line trunk 101 of slave station A is detected, the central processing unit 106 of slave station A communicates the switching network between the sender 103 and the slave station via the control circuit 105 of the slave station based on the information in the memory device 107 of the slave station. Work 104 and specific extension line circuit 108
by controlling the sender 103 and the specific extension line circuit 1.
Connect 08. Next, the storage device 107 of slave station A
The selection signal information corresponding to the route is read from the sender 103, and the specific extension line circuit 108 and circuit 1 are
11 to the external line trunk 301 of the master station B. After sending the selection signal, sender 103
and release the connection with the specific extension line circuit 108,
The external line trunk 101 of the slave station and the specific extension line circuit 108 are connected in advance.

On the other hand, when the master station B detects an incoming call to the outside line trunk 301, the central processing unit 306
The control circuit 305 controls the outside line trunk 301, the switching network 303 of the master station, and the register trunk 302 based on the information of 07, connects the outside line trunk 301 and the register trunk 302, and registers the selection signal sent from the sender 103. It is received and stored in the trunk 302. When the central processing unit 306 analyzes the selection signal information accumulated in the register trunk 302 and confirms that the call is from a slave station, it controls the lamp corresponding to the route of the slave station external line trunk on the central processing unit 304. Displays incoming calls by call type.

Next, when the office line trunk 304 presses the answering key, the connection between the outside line trunk 301 and the register trunk 302 is released, and the outside line trunk 30 is opened.
1 is connected to a central office line relay board 304 via a switching network 303. At this point, slave station A
The outside line trunk 101 is connected to the central office line relay stand 304. This incoming call is sent to the line circuit 109 of slave station A.
When transmitting to the extension line 110 via the office line relay board, first, a hooking signal is sent from the hooking signal and selection signal sending circuit 201 to the specific extension line circuit 108 by pressing a specific telephone key on the office line relay board.
When a hooking signal is detected, the specific extension line circuit 108 reserves the link corresponding to the outside line trunk 101, holds the outside line trunk 101, and connects the register trunk 102. At this time, a special dial tone from the slave station is heard on the station line relay stand 304. Next, when the office line relay stand 304 presses the numeric key, the hooking signal and selection signal sending circuit 201 converts the selection signal information into a multi-frequency signal and sends it to the slave station A. The selection signal is slave station A
stored in the register trunk 102 of the slave station and analyzed by the central processing unit 106 of the slave station.
9 and calls extension 110.
When the extension 110 responds, communication between the office line relay stand 304 and the extension 110 becomes possible. After that, the central office line relay stand 30
4 is restored by pressing the telephone key, the external line trunk 101 and extension 110 of the slave station A are automatically connected via the switching network 104, and communication becomes possible.

In addition, after the extension 110 answers, the central line relay stand 304
When the user presses the specified telephone key again, the external line trunk 101
A three-way call between the office line 110 and the office line relay stand 304 becomes possible, and when the office line relay stand 304 is restored thereafter, a call between the outside line trunk 101 of the slave station A and the extension line 110 becomes possible. Further, when the office line relay stand 304 is restored while the extension 110 is being called, the external line trunk 101 of the slave station hears the ringing tone and after the extension 110 answers, it becomes possible to talk between the external line trunk 101 and the extension 110 in the same way.

Although the above description has been made regarding the incoming call from the external line trunk of the slave station, it is also possible to carry out the same procedure for calling the operator from the extension of the slave station to the master station and re-calling the operator.

FIG. 2 shows details of the hooking signal and selection signal sending circuit 201 shown in FIG. 1.

First, a hooking signal is generated using a monostable multivibrator 411. That is, when generating a hooking signal, the central processing unit 306 of the master station B drives the monostable multivibrator 411 via the control circuit 305, and the relay 4
Operate 09. The self-contact 4091 opens due to the operation of the relay 409, but after a certain period of time has passed, the contact 4091 automatically returns to its original position due to the operation of the monostable multivibrator 411. This relay 4
While 09 is operating, the communication path between master station B and slave station A is kept open and a hooking signal is generated.

Next, sending out the selection signal will be explained. When numeric information (for example, 4 digits) is received by pressing the numeric key on the central processing unit 304 via the control circuit 305 and reaches the hooking signal and selection signal sending circuit 201, the clock counters 402 and 403 are initialized. After setting, the incoming numerical information is sent to latch registers 404, 405, and 40 by gate control of clock counter 403, respectively.
Latch at 6,407. This latched information is sent to a multi-frequency signal generator 401 under gate control of a clock counter 402 and converted into a multi-frequency signal. When sending a multi-frequency signal from the master station B to the slave station A, the flip-flop circuit 410 operates the relay 408 and its self-contact 408
1,4082 is closed.

(Effects of the invention) As described above, the present invention does not require a central office line relay board in the slave station, and incoming calls from the external line trunk and extension of the slave station are answered by the call type at the central station central office relay stand. can. In other words, the incoming call can be transferred to any extension of the slave station by using the incoming circuit without separating the outgoing and incoming lines, so the switching network can be completed by simply installing a central office line relay board and a central office line relay board operator. It becomes possible to assemble. Therefore, considering the personnel costs of the equipment for the central office line relay board and the personnel who handle the central office line relay stand, it is possible to achieve the desired functions at a very low cost. In addition, by sending a selection signal from the slave station, the main station's relay board displays the incoming call type, allowing the operator to easily determine where the call is coming from and quickly processing the response. I can do it. Furthermore, by concentrating the central office line relay board in the master station, centralized management of the switching network and management of the central office line relay board operator can be easily carried out.

[Brief explanation of the drawing]

FIG. 1 is an overall system configuration diagram of the present invention, and FIG. 2 is a diagram showing the configuration of 201 in FIG. 1 in detail. 101...External line trunk, 102...Register trunk, 103...Sender, 104...Switching network, 105...Control circuit, 10
6...Central processing unit, 107...Storage device, 10
8... Specific extension line circuit, 109... Line circuit, 110... Extension telephone, 111... Line between master station and slave station, 201... Footing selection signal sending circuit, 301... External line trunk, 302... Register trunk, 303... Switching network, 304... Office line relay board, 305... Control circuit, 306... Central processing unit, 307... Storage device, 401... Multi-frequency signal generator, 402, 40
3...Clock counter, 404, 405, 40
6,407...Latch register, 408,409
...Relay, 410...Flip-flop circuit,
411... Monostable multivibrator.

Claims (1)

[Scope of utility model registration request] In an automatic switch group consisting of at least one master station having a central office line relay board and at least one slave station having no central office line relay stand, incoming calls to the slave stations are associated in advance in a storage device. a circuit that connects to a specific extension terminal connected to the terminal, a circuit that sends a selection signal corresponding to the call type from the specific extension terminal to the master station, a circuit that detects the selection signal and displays an incoming call type-specific display on the central station relay board. A circuit that transfers a call in progress on an extension to any other extension, a circuit that generates a hooking signal and relays it from the master station to a slave station, and a circuit that converts the numeric telephone key information of the central office relay stand into a selection signal. and a circuit for relaying from the master station to the slave station, which receives an incoming call to the slave station according to the type of incoming call to the central line relay board of the master station, and sends a hooking signal from the master station to the slave station. 1. An incoming call intensive response device in an automatic switching system, characterized in that the incoming call to the slave station is connected to any extension line belonging to the slave station by transmitting a selection signal.