JPH04104554A - Method and device for call back of private branch exchange - Google Patents

Abstract

PURPOSE:To set a call back by plural setters by providing a call back memory where call back information of plural extension subscribers can be recorded. CONSTITUTION:A memory 10 for call back is divided to areas for extension subscribers 30 to 34 connected to a main switch 21. When, call back is set by extension subscribers, plural call back information of setters who set the call back are recorded in area for a subscriber to be called back by a CPU 20. Recorded contents are a set order 11 of the order of call back setting, a setter extension number 12 which is the extension number of the extension subscriber who sets the call back, and a setter extension class 13 which is a preliminarily determined priority level. At the time of call back, the CPU 20 determined priority levels in the order of the setter extension class 13 and the set order 11 to determine the call back order. Thus, call back is set to the same extension subscriber by plural extension subscribers.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a private branch exchange, and particularly relates to a call-back method and device for a private branch exchange having a call-back function, which is one of the service functions of a private branch exchange. .

C. Prior Art] In a conventional call-back device of a private branch exchange, when a certain extension subscriber makes a call to the other extension subscriber and the other extension subscriber is busy, the certain extension subscriber calls back from his/her own telephone. The user dialed the access code for the automatic call-back function to set up a call-back to the other party's extension subscriber. Then, when both the person who set up the automatic call-back function (extension subscriber) and the person for whom the automatic call-back function is set (the other party's extension subscriber) are free to talk, a call is made to both parties. ,
After answering, I made a call.

[Problems to be Solved by the Invention] In the conventional private branch exchange described above, the number of callback calls that can be set by the setter is limited to one. Therefore, a plurality of call-back setters cannot simultaneously set the same extension subscriber as the setee of the call-back function. For this reason, other setters cannot set a callback for a setee who has been set up for a callback, so they must wait until the callback function for the settee ends and try calling again. There was a drawback that it had to be done.

An object of the present invention is to eliminate such drawbacks and provide a callback memory that can record callback information for multiple extension subscribers, thereby enabling callback settings for private branch exchanges that allow callback settings to be made by multiple setters. An object of the present invention is to provide a return method and device.

[Means for Solving the Problems] The call-back method for a private branch exchange of the present invention allows multiple extension subscribers to call back to the same extension subscriber when the calling party's extension subscriber is busy. When the setting is made, the callback information of multiple setters who have set the callback is recorded in the dedicated memory area of the person who has received the callback setting,
When both the setter and the setee are available for conversation, a callback is made to both of them based on the recorded callback information.

Further, the call-back device for a private branch exchange of the present invention includes a call-back memory that records call-back information, and a central control unit that controls this memory, and the central control unit controls the caller's extension subscriber. If multiple extension subscribers set callback to the same extension subscriber while the caller is busy, the callback information of the multiple callback settings will be sent to the same extension subscriber. The callback information is recorded in a dedicated memory area of the setee who has received the memory callback setting, and when it is detected that the setter and the setee are able to talk, based on the callback information recorded in the memory, Call back to both of them.

Furthermore, the call-back device for a private branch exchange of the present invention includes a call-back memory for recording the set order, extension number, and set extension class of the person who made the call-back settings for each extension subscriber, and a call-back memory that controls this memory. and a central control unit, the central control unit is configured to: When a calling party's extension subscriber is busy, when multiple extension subscribers set a call back to the same extension subscriber, Recording call-back information of a plurality of setters who have made call-back settings in a memory area of the setee who has set the call-back in the call-back memory, and calls between the setter and the setter. When a possible state is detected, a call-back order is determined based on the set extension class and the set order, and the call-back is performed based on the extension number.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention.

As shown in FIG. 1, this device includes a main switch 21 and a C
PU (central control unit) 20 and recall memory 10
It consists of

Extension subscribers 30 to 34 are connected to the main switch 21. The CPU 20, together with the main switch 21, controls reading and writing of data in the recall memory 10.

The callback memory 10 is divided into areas for each extension subscriber 30 to 34 connected to the main switch 21.

In FIG. 1, only the exclusive area for the extension subscriber 30 is shown. When an extension subscriber sets up a callback, C
The PU 20 records a plurality of pieces of call-back information of the setter who has set the call-back in the area for the runner to be called-back. The recorded contents are set in the order of 11. Configurator extension number 1
2. The configurator's extension class is 13. The setting order 11 is the order in which the call-back settings were made, the set Terauchi line number 12 is the extension number of the extension subscriber who set the call-back, and the set internal line class 13 is a predetermined priority. When performing a callback, the CPU 20 determines the priority in the order of the set internal line class 13 and the set rank 11, and determines the callback order.

Next, the operation of this embodiment will be explained with reference to the drawings.

The extension numbers of extension subscribers 32 to 34 are "'2002", "
2003" and "2004", and the set subscriber class is "B'".

“B” and “°°A”.

It is assumed that when the extension subscriber 30 is talking with the extension subscriber 31, the extension subscriber 32 makes a call to the extension subscriber 30. The extension subscriber 30 picks up the handset from the telephone body, goes off-hook, and after hearing the dial tone, the extension subscriber 30
For example, dial the extension number "2000". The extension subscriber 30 learns from the busy tone that the extension subscriber 30 is busy, dials a predetermined access code for the automatic call-back function, lowers the handset to the telephone body, makes call-back settings, and goes off-hook. do.

The CPU 20 receives the call-back setting from the extension subscriber 31, and sets "1" to the setting order 11 area of the dedicated area for the extension subscriber 30 in the call-back memory 10, and sets the set Terauchi line number 12.
Write "2002" in the area and "B" in the area of the set internal line class 13.

Next, while the extension subscriber 30 and the extension subscriber 31 are talking,
Furthermore, when the extension subscriber 33 sets a callback to the extension subscriber 30, the CPU 20 similarly sets the setting order 1.
2 in the area of 1, 2003 in the area of set Terauchi line number 12
”, write 11B in the area of the set internal line class 13. Similarly, when the extension subscriber 34 also sets callback during a call, the CPU 21 displays "3", "2004",
Write “A′.

Next, when the call of extension subscriber 30.31 ends, the CP
U20 searches the dedicated area for the extension subscriber 30 in the callback memory 10. Then, the extension subscriber 34 of the established indoor line class A is ranked first, the extension subscriber 32 whose setting rank is first among the established indoor line class B is the second rank, and similarly, the established indoor line class B is ranked first. Extension subscriber 33 from number 2 to number 3
Rank. The CPU 20 refers to the set Terauchi line number according to the first to third ranks, calls the extension subscriber of the first rank, and when the extension subscriber responds, drives the main switch 21 to connect. In this way, calls are made to the extension subscribers in the first to third ranks.

〔Effect of the invention〕

As explained above, the present invention is equipped with a call-back memory that can record a plurality of extension classes, extension numbers, and setting orders of call-back setters for each extension subscriber, so that multiple extension subscribers can subscribe to the same extension. In addition to being able to set a callback for a subscriber, there is also an effect that a callback can be made to an extension subscriber with a higher priority among those who have set the callback.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention. 10...Memory for recall 20...CPtJ 21...Main switch agent Patent attorney Yoshiyuki Iwasa

Claims (3)

[Claims] (1) If multiple extension subscribers set call-back to the same extension subscriber while the calling party's extension subscriber is busy, the call will be reserved exclusively for the subscriber who has set the call-back setting. The call-back information of multiple setters who have made call-back settings is recorded in a memory area, and when both the setter and the set-up person are free to talk, the recorded call-back information is recorded. A call-back method for a private branch exchange that calls back to both parties. (2) It has a call-back memory that records call-back information and a central control unit that controls this memory, and the central control unit is capable of transmitting multiple When an extension subscriber sets a callback to the same extension subscriber, the callback information of multiple setters who made the callback settings is stored in the callback memory that received the callback settings. a private branch exchange that records in a dedicated memory area of the configured person, and when it detects that the configured person and the configured person are in a callable state, calls back to both of them based on the callback information recorded in memory; callback device. (3) A call-back memory for recording the set order, extension number, and set extension class of the setter who made call-back settings for each extension subscriber, and a central control unit for controlling this memory; If multiple extension subscribers set a call back to the same extension subscriber while the calling party's extension subscriber is busy, the central control unit Record the callback information of the setter in the memory area of the setter who has been set to call back in the callback memory, and when it is detected that the setter and the setter can talk, the callback information of the setter is recorded. A call-back device for a private branch exchange that determines a call-back order based on an extension class and the set order, and performs a call-back based on the extension number.