JPH03283854A - Telephone set - Google Patents

Abstract

PURPOSE:To inform the operation of an off-hook preventive function by detecting a howler tone by a howler tone detecting means, automatically performing on-hook based on a detection result, setting a state where speech from another subscriber can be performed again, and informing the on-hook state with a lamp, etc. CONSTITUTION:When the howler tone is sent out via an audio bus 11, it is detected by a howler tone detecting part 6. When the howler tone is detected, the howler tone detecting part 6 sends a signal representing the above fact to button hook control part 7 via a control bus 8. The button hook control part 7 performs the on-hook of a hook 5 via a control bus 9, and also, lights the lamp of a response button 3 via a control bus 10. In such a way, the on-hook can be automatically performed and the state where the speech from another subscriber can be performed is set even when the howler tone is sent out as leaving a receiver raised, and also, the fact of the on-hook is informed by lighting the lamp, etc., and a subscriber can recognize the operation of the off-hook preventive function.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone, and more particularly to a telephone having a function of preventing off-hook and enabling a telephone conversation when a howler sound is transmitted.

[Conventional technology]

Conventionally, when a subscriber ends a call and does not place the handset in the correct position, or when the handset is knocked off the hook by an object, the equipment in the central office remains on hold. It will be destroyed. This not only makes it impossible to contact the subscriber by telephone, but also causes a decline in service to other subscribers. To avoid this, the station sends out a howler sound as an alarm signal to alert subscribers. When a subscriber notices this howling sound, the receiver is placed in a predetermined position and turned on-hook.

[Problem to be solved by the invention]

As described above, conventional telephones do not have a function to detect howler sounds, and therefore, when a howler sound is transmitted, there is no other way than for the person who noticed the sound to accurately go on-hook.

However, even if the howler sound is sent out, no one may notice, and even after the howler sound has stopped, other subscribers may not be able to contact the telephone that remains off-footer. become.

The present invention has been made in view of such problems, and its purpose is to provide a telephone that detects howler sounds, automatically goes on-hook internally, and enables telephone contact from other subscribers. be.

[Means to solve the problem]

The present invention provides a howler sound detection means for detecting a howler sound when the howler sound is transmitted, an on-hook means for on-hooking when the howler sound is detected by the howler sound detection means, and the howler sound detection means. and a notification means for notifying that the howler sound has been transmitted when the howler sound is detected.

With such a configuration, in the telephone of the present invention, when a howler sound is transmitted with the handset off the hook, this -/1 back sound is detected by the howler sound detection means, and the on-hook is automatically performed based on this detection result. Since the subscriber is again able to receive calls from other subscribers and is notified by a lamp or the like that the subscriber has been on-hook, the subscriber can know that this off-hook prevention function has worked.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 shows the appearance of a telephone according to an embodiment of the present invention,
Further, FIG. 1 is a block diagram showing the internal configuration thereof.

In the figure, reference numeral 1 denotes a telephone main body, and on the top surface of the telephone main body 1, a numeric keypad 2 and an on-hook notification/response button 3 are provided, and a receiver 4 is provided with power. The telephone main body 1 further has a hook 5 inside, and is connected to the audio bus 11 of the telephone network, so that when a howler sound is transmitted from the station,
A howler sound detection section 6 for detecting the howler sound, and a button/hook control section 7 connected to the howler sound detection section 6 via a control bus 8 are provided, respectively. The button/hook control unit 7 connects to the hook 5 via the control bus 9 and the on-hook notification/response button 3 via the control bus IO.
is connected to. The on-hook notification/response button 3 is a lamp, which lights up when a howler sound is detected by the howler sound detector 6 and has a function as a notification means to notify that the howler sound has been transmitted. .

The button/hook control unit 7 controls the hook 5 to go on-hook and lights up the lamp of the on-hook notification/response button 3 when a howler sound is detected by the howler sound detection unit 6.
When the response button 3 is pressed, the lamp is controlled to go out.

With this configuration, in the telephone of this embodiment, when a howler sound is sent out via the audio bus 11, the howler sound detector 6 detects the howler sound. When the howler sound is detected, the howler sound detector 6 sends a signal to that effect to the button/hook controller 7 via the control bus 8. The button/hook control unit 7 causes the hook 5 to go on-hook via the control bus 9, and lights up the on-hook notification/response button 30 lamp via the control bus 10.

After that, when a call is received from another subscriber, the subscriber knows that the off-footer prevention function of the telephone has been activated by the lighting of the lamp, and presses the on-hook notification/response button 3. When on-hook notification/response button 3 is pressed,
A signal to that effect is sent from the on-hook notification/response button 3 to the button/hook control section 7 via the control bus 10.

Upon receiving this signal, the button/hook control section 7 extinguishes the lamp of the on-hook notification/response button 3 via the control bus 10 and puts the hook 5 into an off-hook state via the control bus 9.

Further, the howler sound detection section 6 is returned to the initial state via the control bus 8. This allows the subscriber to make calls again.

In the above embodiment, a lamp is used to notify that the off-hook prevention function has worked, but it is of course possible to use other methods such as audio.

〔Effect of the invention〕

As explained above, according to the telephone of the present invention, there is a howler sound detecting means for detecting the howler sound when the howler sound is transmitted, and an on-hook operation is performed when the howler sound is detected by the howler sound detecting means. Since the configuration includes an on-hook means and a notification means that notifies that the howler sound is transmitted when the howler sound is detected by the howler sound detection means, even if the howler sound is transmitted while the handset is off, , the subscriber is automatically on-hook and becomes available for calls from other subscribers, and the fact that the subscriber has been on-hook is notified by a lamp or the like, allowing the subscriber to know that this off-hook prevention function has worked.

[Brief explanation of drawings]

The drawings show a telephone according to an embodiment of the present invention, with FIG. 1 being a block diagram showing its internal configuration, and FIG. 2 being a front view. 1...Phone body, 3...On-hook notification/response button, 4...
...Telephone receiver, 5...Hook, 6...Howler sound detection section, 7...Button/hook control section, 8-10...
...Control bus applicant: NEC Corporation Representative: Patent attorney: Umeo Yamauchi

Claims (1)

[Scope of Claims] Howler sound detection means for detecting the howler sound when the howler sound is transmitted; on-hook means for on-hooking when the howler sound is detected by the howler sound detection means; 1. A telephone set comprising: a notification means for notifying that a howler sound has been transmitted when the howler sound is detected by the detection means.