JPH01117459A - Subscriber absence detection system - Google Patents

Abstract

PURPOSE:To discriminate whether or not a subscriber is absent by providing an absence setting circuit on a telephone set, a detection circuit of the absence setting state on a subscriber circuit and a storage device storing the absence information of a subscriber in a main controller. CONSTITUTION:An extension telephone set 1 is provided with an absence setting circuit 5 in addition to a hook switch 2, a handset 3 and a call signal detection circuit 4. On the other hand, an absence setting detection circuit 11 detecting the absence setting state composed of the absence setting circuit 5 is provided on a subscriber circuit 10 and a storage device 16 storing the absence information is stored in a main controller 15. Then the subscriber circuit 10 informs to the main controller 15 that the extension telephone set 1 is in the absence setting state and the main controller 15 stores the absence information to the storage device 16. In calling one extension telephone set 1 set with the absence from other extension telephone set 1, the main controller 15 reads out the absence setting state of the one extension telephone set 1 from the storage device 16 and sends an absence sound decided optionally different from a busy tone to the other extension telephone set 1. Thus, the absence setting state is recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic exchange using a storage program method, and more particularly to a subscriber absence detection method.

[Conventional technology]

Conventionally, the status of a subscriber's telephone, as seen from the switchboard, has varied between idle and busy.

[Problem that the invention seeks to solve]

Conventionally, the state of a subscriber's telephone viewed from the exchange side can only be seen as either an idle state or a busy state, so there is a drawback that it is not possible to determine whether the subscriber is absent in an idle state.

SUMMARY OF THE INVENTION An object of the present invention is to provide a subscriber absence detection method that solves the above-mentioned problems.

[Means for solving problems]

The present invention provides an electronic exchange using a storage program system, in which a telephone set includes an absence setting circuit for setting a third state different from an idle state and a busy state by a switch operation, and a subscriber circuit includes an absence setting circuit. This subscriber absence detection method is characterized in that it has means for detecting an absence setting state according to the present invention, and has a storage device in the main controller that stores subscriber absence information.

〔Example〕

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

FIG. 1 is a diagram showing the relationship between a telephone and a subscriber circuit in the present invention, and FIG. 2 is a diagram showing the overall configuration of the present invention. In the figure, an extension telephone 1 is provided with an absence setting circuit 5 in addition to a hook switch 2, a handset 3, and a ring signal detection circuit 4. The absence setting circuit 5 has an absence setting button 6 with a lock.
and a constant current circuit 7. The current setting value of the constant current circuit 7 is such that when the absence setting button 6 is turned on, the current flowing through the communication path 8 or 9 is set to a predetermined third value that is different from the current in the idle state and the current in the busy state. Set.

On the other hand, the subscriber circuit 10 is provided with an absent setting detection circuit 11 for detecting the absent setting state by the absent setting circuit 5, and the absent setting detecting circuit 11 of the subscriber circuit 1o monitors the current flowing through the communication path 9 to set the absent setting. At the same time, it is detected that the current flowing through the communication path 8 has reached an arbitrary value, and the control circuit 12 is notified.

81.91 is a communication path from the control circuit 12, and 13 is a control line.

In FIG. 2, extension telephone 1. l, subscriber circuit 10,
A storage device 16 for storing subscriber absence information is provided in the main control bag [15] that controls the switch circuit 14 including the main controller 10. The subscriber circuit 1o notifies the main controller 15 that the extension telephone 1 is set to be absent, and the main controller 1ffl15 stores the absence information in the storage device 16.

In the embodiment, one extension telephone 1 is set to be absent.
When the other extension telephone 1 makes a call, the subscriber circuit 10 sends a call request from one extension telephone 1 to the other extension telephone 1 to the main controller 15, but the main controller 15 It reads from the storage device 16 that one extension telephone 1 is in an absent setting state, and sends an arbitrarily determined absent tone different from the busy tone to the other extension telephone 1. The user of the other extension telephone 1 can know that one extension telephone 1 is set to be absent by hearing the absence tone.

〔Effect of the invention〕

As explained above, the present invention includes an absence setting circuit in a telephone,
By providing a circuit for detecting an absentee setting state in the subscriber circuit and a storage device for storing the subscriber's absentee information in the main controller, it is possible to make a call from any extension telephone to an extension telephone set to be absent. You can hear the absence sound when
This has the effect that when the called party is absent, there is no need to waste time waiting for a response or making phone calls.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the relationship between a telephone set and a subscriber circuit according to the present invention, and FIG. 2 is a diagram showing the overall structure of the present invention. 1...Extension telephone 2...Hook switch 3.
...Handset 4...Call signal detection circuit 5
...Absence setting circuit 6...Absence setting button 7...
- Constant current circuit 8.8', 9.9'... Call path 10... Subscriber circuit 11... Absence setting detection circuit 12... Control circuit 13... Control line 14.
...Switch circuit 15...Main control device 16...
Storage device

Claims (1)

[Claims] (1) In an electronic exchange using a storage program system, the telephone set has an absence setting circuit that sets a third state different from the idle state and the busy state by switch operation, and the subscriber circuit has the absence setting circuit. 1. A subscriber absence detection method, comprising means for detecting an absence setting state by a main controller, and a storage device for storing subscriber absence information in a main controller.