JPH0247966A - Caller extension redial system from called extension - Google Patents

Abstract

PURPOSE:To automatically call a caller extension from a called extension by storing caller extension callback information to a memory at the end of talking between extensions to read the information stored after the end of speech. CONSTITUTION:An extension telephone set 1 calls an extension telephone set 2 to apply extension mutual call. When the call is finished, a central controller 6 sets subscriber information of a telephone set 1 to a part corresponding to the called extension in a memory 11 provided in a main storage device 7, that is, a memory section 12 of the telephone set 2 as callback information 13. Succeedingly, the telephone set 2 hooks off and dials a caller extension redial special number, the controller 6 calls the information 13 from the section 12. Then based on the information 13, the controller 6 controls a channel switch 5 to connect a call tone source 9 and an extension circuit 4 thereby giving the call tone to the telephone set 2 and to ring a bell of the telephone set 1 through the extension circuit 3. Then the speech is restarted by the reply of the telephone set 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic recall system for a calling extension from a called extension.

[Prior Art] Conventionally, as this type of recall method, there is a redial method. This double-dial method is a method in which the calling extension memorizes the number of the called extension that has been dialed, and after the extension-to-extension conversation ends, the calling extension calls the called extension again. be.

[Problems to be Solved by the Invention] The conventional recall method described above is a method in which the extension that was the calling party re-calls the extension that was the called party. It was not a method to re-ring the extension that was the calling party.

That is, even if the extension that was on the called side wanted to talk to the other party on the extension that was on the calling side again after the end of the call between the extensions, the call could not be automatically re-called.

It is not that difficult to look up the phone number and redial from the calling extension to the called extension, but in the opposite case, you may not have the phone number list at hand, or For reasons such as forgetting the caller's name and not being able to look up the caller's phone number from the phone number list,
There were times when it was difficult.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned drawbacks of the conventional system, and is a system that automatically re-calls the calling extension from the called extension. The purpose is to provide a method that can do this.

In order to achieve the above object, the system for recalling a calling extension from a called extension in an electronic exchange of the present invention has a memory for storing calling extension recall information in a corresponding part of the called extension, and means for storing calling extension callback information in the memory at the time of termination, and when an operation for recalling the calling extension from the called extension after the end of the inter-extension conversation, The present invention is characterized by comprising a control means for reading the stored calling extension callback information and recalling the extension that was the calling party.

[Embodiment] Hereinafter, a method for recalling a calling extension from a called extension in an electronic exchange according to the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a calling extension re-calling method from a called extension in an electronic exchange according to the present invention.

FIG. 2 is a configuration diagram of a memory provided in the main storage device.

FIG. 3 is a flowchart showing the control software of the central controller when the called extension telephone dials the calling extension recall special number.

In this embodiment, as shown in FIG. 1, an extension telephone 1, an extension telephone 2, an extension circuit 4 accommodating the extension telephone 5, a call path switch 5, a central control unit 6, It is composed of a main storage device 7, a busy sound source 8, a calling sound source 9, a restriction sound source 10, and a memory 11 provided in the main storage device 7 as shown in FIG.

Next, the operation of this embodiment will be explained.

First, it is assumed that extension telephone R1 makes a call, calls extension telephone 1112, and performs an inter-extension conversation.

When the call ends, the central control device 6 stores the section corresponding to the called extension on the memory 11 provided in the main storage device 7;
That is, the subscriber information of extension telephone 1 is set as callback information 13 in memory section 12 of extension telephone 2 (step 21).
makes a call and dials a predetermined calling extension recall special number, the central controller 6 reads the callback information 13 from the memory 12 of the extension telephone 2 in the memory 11 in the main storage device 7. 22) Check whether subscriber information has been set (step 23).

If step 21 has completed execution, callback information 1
Since the subscriber information of the extension telephone 1 is set as 3, the central control device 6 sets the extension telephone 1fi based on this information.
Check whether l is free or busy (step 24).

When the extension telephone 1 is vacant, the central control device 6 controls the call path switch 5, connects the ring sound source 9 and the extension circuit 4, allows the extension telephone 2 to hear the ring tone, and connects the extension port 1 to 43. A calling signal is sent through the telephone, and the bell of extension telephone 1 rings (step 25).

The call can be resumed by a response from the extension telephone aat.

In step 24, if the extension telephone 1 is busy, the central controller 6 controls the call path switch 5, and the busy sound source 8
and the extension circuit 4 to make the extension telephone 2 hear a busy tone (step 26).

In step 23, if the subscriber information is not set, the central controller 6 controls the call path switch 5, connects the restriction sound source 10 and the extension circuit 4, and makes the extension telephone 2 hear the restriction sound. (Step 27).

[Effects of the Invention] As explained above, the present invention stores calling extension callback information in a memory when a call between extensions ends, and
After an extension-to-extension conversation ends, when an operation is performed to recall the calling extension from the called extension, the calling extension recall information stored in memory is read out and the calling extension is called again. Now that the caller is calling again, even if you don't know where the caller is calling from or you don't know the calling party's extension number, you can still dial a predetermined special number from the called party's extension. This has the effect of automatically calling the other party.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a calling extension re-calling method from a called extension in an electronic exchange according to the present invention. FIG. 2 is a configuration diagram of a memory provided in the main storage device. FIG. 3 is a flowchart showing the control software of the central controller when the called extension telephone dials the calling extension recall special number. 1... Extension telephone (calling side) 2... Extension telephone (called side) 3... Extension circuit (calling side) 4... Extension circuit (called side) 5... Call path Switch 6...Central control device 7
... Main storage device 8 ... Busy sound source 9 ... Call sound source 10 ... Regulation sound source 11 ... Memory 12 ... Memory section 13 ... Call back information Fig. 1

Claims (1)

[Scope of Claims] A memory for storing calling extension callback information in a corresponding portion of a called extension; means for storing calling extension callback information in the memory when a call between the extensions ends; and When an operation is performed to recall the extension that was the calling party from the called extension after the end of the inter-extension conversation, the calling extension recall information stored in the memory is read out and the extension that was the calling party is recalled from the called extension. A calling extension recalling method from a called extension in an electronic exchange, comprising: a control means for recalling a calling extension; and a control means for recalling a calling extension.