JPS6243238A - Telephone set - Google Patents

Abstract

PURPOSE:To eliminate an undesired holding state for a long time with an incoming trunk, etc. of a telephone exchange by detecting and judging the alarm signal fed from the exchange and controlling a switch based on said judgement to set a pseudo on-hook state. CONSTITUTION:In an off-hook state where a telephone receiver is kept at an off-hook state, a hook switch 6 is closed upward together with switches 4 and 5 opened and closed respectively. Under such conditions, a alarm signal is transmitted from a telephone exchange 9 in order to prevent an undesired long-time holding state of the exchange 9. An alarm signal detector 1 detects the alarm signal. The result of this detection is sent to a deciding device 2 and judges there. Based on the result of this judgement, a switch controller 3 works to close and open the switches 4 and 5 respectively. Under such conditions, a telephone set is kept at a pseudo on-hook state and the holding state of the exchange 9 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a telephone set, and particularly to a configuration suitable for avoiding long-term unnecessary holding of incoming trunks, outgoing trunks, and subscriber circuits of a telephone exchange.

[Background of the invention]

In order to avoid unnecessary long hold times such as incoming trunks of telephone exchanges due to incorrect handset operations by subscribers, conventionally the exchange has sent out warning signals to warn subscribers. As a known example of this, JP-A-58-5071
There is a number. However, it has not been possible to completely avoid unnecessary long-term hold times such as incoming trunks of telephone exchanges due to subscriber absences, etc.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a telephone set that can avoid the inability to receive calls and the deterioration of service to other subscribers due to unnecessary long-term hold on the incoming trunk of a telephone exchange. be.

[Summary of the invention]

The present invention detects and judges an alarm signal sent from a telephone exchange, controls a switch based on the judgment result, and creates a pseudo on-hook state, thereby preventing unnecessary long hold times such as incoming trunks of the telephone exchange. This is a complete cancellation.

[Embodiments of the invention]

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

In FIG. 1, 1 is an alarm signal detection device, 2 is a determination device that determines the alarm signal detection result, 3 is a switch control device that operates according to the determination result or on-hook operation;
4 and 5 are switches controlled by the switch control device 5, 6 is a hook switch, and 7 is a bell.

8 is the telephone circuit excluding the bell 7, and 9 is the telephone exchange! II
! It is a machine. When a telephone with such a configuration is left off the hook (off-hook state),
Hook switch 6 is closed upward (switch 4 is open and switch 5 is closed).

In this state, when an alarm signal is sent from the telephone exchange 9 in order to avoid the telephone exchange 9 from being on hold for an unnecessary long time, the alarm signal is detected! 11, the alarm signal is detected. The detection result is sent to the determination device 2 and determined. Based on the determination result, the switch control device 3 operates, the switch 4 closes, and the switch 5 opens.

By the above operations of the switches 4 and 5, the telephone is put into a pseudo on-hook state, and the hold of the telephone exchange 9 is released.

Further, when the hook switch 6 is manually closed (on-hook) in a pseudo on-hook state according to the above-mentioned alarm signal detection judgment, the switch control circuit 3 is operated, the switch 4 is opened, and the switch 5 is turned on. Close (i.e. the phone will be in a reset state).

This phone has a reset function as mentioned above, so
Due to the above-mentioned alarm signal detection and determination, it is possible to receive and send calls even after pseudo on-hook.

As mentioned above, according to the telephone set shown in FIG. 1, it is possible to easily avoid unnecessary long-term hold and inability to receive calls at the telephone exchange 9 due to erroneous operation of the handset.

Note that FIG. 1 shows one embodiment of the present invention, and if the alarm signal can be easily detected, the determination device 2 is unnecessary.

〔Effect of the invention〕

According to the present invention, it is possible to avoid unnecessary holding of the incoming trunk of the telephone exchange for a long period of time, which may cause service degradation to other subscribers due to unnecessary holding, and
This has the effect of avoiding a situation where calls cannot be received.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention. 2... Judgment device, 3... Switch control device, 4... Switch, 5... Switch, 6...
...hook switch, 7...bell, 9...telephone exchange. Figure 1

Claims (1)

[Claims] 1. In a telephone, an alarm signal detection and determination device detects and determines an alarm signal; a switch control device that operates according to the determination result or on-hook operation; and a control signal sent from the switch control device, What is claimed is: 1. A telephone set, characterized in that it is provided with a switch that is connected so that the telephone set is in an on-hook state.