JPH01200761A - Call back system - Google Patents

Abstract

PURPOSE:To prevent a desired outgoing connection from being interfered by connecting automatically only after the respective free conditions of a call back setter and a person to be set continue for a fixed time. CONSTITUTION:When the talking condition between a call back setter and a person to be called back of an extension is monitored with a computer and the respective free conditions of both are detected, a computer incorporated timer is reset, and when the free condition is continued for a fixed time, a switching part is controlled by the computer, and both are connected automatically. When both become the free condition, by a system which executes an automatic connection not immediately but only after the free condition is continued for a fixed time, and even when it becomes at least the free condition itself, the outgoing connection to others can be executed freely without any interference irrespective of the condition of a called party for a fixed time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a callback system, and particularly to a callback system in an electronic exchange using a storage program control system.

[Conventional technology]

Conventionally, this type of callback system automatically connects when both the callback setter and the callback setter become idle.

[Problem that the invention seeks to solve]

In the conventional callback method described above, while a callback is set, both the callback setter and the callback setter can use the other extension even if one extension is idle. If the subscriber is in a busy state, automatic connection by callback will not be performed; automatic connection will be performed depending on the state of the extension subscriber on the other side, regardless of the subscriber's own state; When one extension subscriber tries to call a third extension subscriber, etc. for another matter, if an automatic callback connection is performed immediately before this, the call operation of this extension subscriber is not the answer operation. The disadvantage is that the desired outgoing connection is blocked.

[Means for solving problems]

The callback method of the present invention has a function to monitor the status of the callback setter and the callback setter for a certain period of time, and unless both parties remain idle for a certain period of time, the callback system automatically It is configured so that no connection is made.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 and FIG. 2 are a relay system diagram and a flow chart thereof, respectively, showing one embodiment of the present invention. Figure 1 (
In a), when the extension subscriber 10 is on a call with the extension subscriber 11 or another extension subscriber 12, a busy tone (BT) is heard because the extension subscriber 10 has made an outgoing connection to the extension subscriber 11; A callback is set for the extension subscriber 11 by known means. Here, the central controller 20 starts a monitoring function (or program, hereinafter the same) having the logic as shown in flowchart 1 of FIG.

Next, as shown in FIG. 1(b), when both the extension subscriber 10 who is the callback setter and the extension subscriber 11 who is the callback setter are restored and become idle, the monitoring Reset the timer of the function and proceed to the timer update procedure. From this state, even if either of the extension subscribers 10 and 11 performs a calling operation or receives an incoming call, the timer update procedure is canceled and the process shifts to the status monitoring procedure.

However, in the timer update procedure, if both extension subscribers 10 and 1 remain idle for a certain period of time, the central controller 20 ends the timer update procedure,
Automatic connection by callback is performed using known means as shown in FIG. 1(c).

〔Effect of the invention〕

As explained above, the present invention performs automatic connection by callback not when the callback setter and the callback setter become idle, but after the idle status continues for a certain period of time. Even if the subscriber's own extension line becomes idle, it has the effect of being able to freely make outgoing connections to others as necessary for a certain period of time, regardless of the status of the other party's extension subscriber.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram showing the callback system of the present invention;
FIG. 2 is a flowchart showing the logic of the monitoring function provided within the central control unit to implement the call bank system of the present invention. 10-12... Extension subscriber, 20... Central control unit, 30... Switch unit, 31. '32...Connection link.

Claims (1)

[Claims] In the callback system of the electronic exchange using the storage program control method, a time-limited status monitoring function is provided for the callback setter and the callback setter, and the availability status of each of the callback setter and the callback setter is monitored. A callback method is characterized in that an automatic connection is performed by a callback after detecting that the connection has continued for a certain period of time.