JPH04336739A - Branch telephone set utilization notice device - Google Patents

Abstract

PURPOSE:To display the operating state of other telephone set in branch connection onto its own telephone set and to restrict the usage. CONSTITUTION:A hook detection section 2 detects off-hook of a telephone set 1 and the closing of a loop with a telephone line is detected by a loop detection section 3. Then a signal is outputted from a loop detection section and when the hook detection section detects on-hook of the telephone set 1, a discrimination section 4 discriminates that other telephone set in branch connection to the same telephone line is busy, and a lamp of a display section 5 is lit. Moreover, when a hand of person or the like touches the telephone set 1, it is detected by a touch sensor 6 and a message storage section 7 calls a voice signal via a control section 11 based on the signal from the discrimination and it is alarmed that other telephone set is busy via an alarm section 8. Moreover, the off-hook function of the telephone set 1 is stopped via the hook control section 9 to prevent connection to the telephone line.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for branch-connecting at least two telephones, and for displaying on the telephone when another telephone is in use.

0002

[Background Art] When multiple telephones are branch-connected to the same telephone line, if one telephone is off-hook while the other telephone is in use, the telephone in use may generate noise due to the off-hook or the volume of the call. Problems such as a decrease in performance occur. As a measure to prevent this, for example, a lamp or the like that is lit when the telephone is off-hook is provided near the telephone to notify that the telephone is in use. However, if the branch-connected telephone is far away or the lamp display is in a difficult-to-see position, the telephone may be taken off-hook without realizing this, and the user may only be able to tell that another telephone is in use by hearing the voice from the handset. There's a problem. If this in-use lamp display is to be displayed near a telephone that is not in use, additional wiring will be required for the display.

0003

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned points. When the closure of the telephone line loop is detected and the off-hook of the own telephone is not detected,
To provide a branch telephone usage notification device that determines that another branch-connected telephone is in use and displays this on a display section of its own telephone.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a loop detection unit that detects a loop with a telephone line and a hook detecting unit in a device that connects at least two telephones in a branch. a hook detection unit,
a determination unit that determines whether another telephone is in use based on the signal from the loop detection unit and the signal from the hook detection unit;
A branch telephone usage notification device comprising a control unit for controlling the loop detection unit, the hook detection unit, and the discrimination unit, and configured to display on a display unit that another telephone is in use based on a signal from the discrimination unit. This is what we provide.

[0005]

[Operation] As configured as described above, the branch telephone usage notification device according to the present invention detects loops in telephone lines and hooks of telephones connected to this telephone line, and based on these detections, It is determined whether another telephone that is branch-connected to the same telephone line is in use, and an indication that it is in use is displayed on the display section of the own telephone.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the branch telephone usage notification device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of a branch telephone usage notification device according to the present invention. In the figure, 1 is a telephone, which is branch-connected to the same telephone line along with other telephones. 2 is a hook detection unit that detects the hook of the telephone 1; Reference numeral 3 denotes a loop detection unit that detects the closure of a loop between the telephone line and telephone set 1 or another branch-connected telephone set. Reference numeral 4 denotes a determination unit that determines whether another branch-connected telephone is in use based on signals from the hook detection unit 2 and the loop detection unit 3. Reference numeral 5 denotes a display section, which lights a lamp such as an LED (light emitting diode) based on a signal from the discrimination section 4. A touch sensor 6 detects when a human body touches the telephone 1. 7 is the message storage section,
Memorizes the sound of messages such as "Currently in use". 8
is an alarm section, which issues an alarm by voice or the like based on the signal from the message storage section 7. Reference numeral 9 denotes a hook control section which stops the off-hook function of the telephone 1 based on the signal from the discriminating section 4. 10 is a storage unit that stores control programs and the like. Reference numeral 11 denotes a control unit that controls each part of the apparatus.

Next, the operation of the branch telephone usage notification device according to the present invention will be explained. Hook detection section 2 detects off-hook of telephone 1 and inputs a signal to determination section 4 via control section 11 . Then, the loop detection section 3 detects the closure of the loop between the telephone 1 etc. and the telephone line by measuring the loop current, etc., and sends a signal based on the detection to the discriminating section 4 via the control section 11.
Enter. When the loop closing signal is input from the loop detecting section 3, the determining section 4 determines that the telephone 1 is not off-hook based on the signal from the hook detecting section 2, the signal from the loop detecting section 3 is It is determined that another telephone connected to the branch with telephone 1 is to be taken off-hook, and a signal indicating "other telephone in use" is output. This signal is input to the display section 5 via the control section 11, and an LED or the like is turned on to indicate that another branch-connected telephone is in use. Furthermore, when a person's hand or the like touches the telephone 1, the touch sensor 6 detects this. When the determination unit 4 determines that another telephone is in use and the touch sensor 6 detects contact with a human body, a signal such as a message voice is read out from the message storage unit 7 via the control unit 11. , an audible warning such as ``Currently in use'' is issued via the speaker of the alarm unit 8. Also, based on the determination by the determination unit 4 that another telephone is in use, the hook control unit 9
The off-hook function of the telephone set 1 is stopped via the telephone receiver, and the telephone set 1 is prevented from being connected to the telephone line even if the telephone receiver is picked up.

[0008]

As explained above, according to the branch telephone usage notification device according to the present invention, when one branch telephone connected to the same telephone line is in use, the other telephone which is not in use can be called. It not only displays that the line is in use, but also outputs a warning voice when the handset is touched, and also prevents the handset from going off-hook even when the handset is picked up. Therefore, noise does not enter the telephone during a call, and as a result, it has the effect of preventing eavesdropping on the call.

[Brief explanation of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a branch telephone usage notification device according to the present invention.

[Explanation of symbols]

1　Telephone 2 Hook detection part 3 Loop detection section 4 Discrimination section 5 Display section 6 Touch sensor 7 Message storage section 8 Alarm section 9 Hook control section

Claims (3)

[Claims] Claim 1: A device for branch-connecting at least two telephones, comprising: a loop detection section for detecting a loop with a telephone line; a hook detection section for detecting a hook of the telephone; and a signal from the loop detection section and a hook detection section for detecting a loop with a telephone line. It consists of a determination section that determines whether another telephone is in use based on a signal from the detection section, and a control section that controls the loop detection section, hook detection section, and determination section. 1. A branch telephone usage notification device, characterized in that the device is configured to display on a display unit whether the telephone is in use. 2. A device for branch-connecting at least two telephones, comprising a loop detection section for detecting a loop with a telephone line, a hook detection section for detecting a hook of the telephone, and a signal from the loop detection section and a hook detection section for detecting a loop with a telephone line. a determination unit that determines whether another phone is in use based on a signal from the detection unit; a touch sensor that detects human body contact with the phone;
It consists of a message storage section that stores message signals, and a control section that controls the loop detection section, hook detection section, discrimination section, touch sensor, and message storage section, and uses another telephone based on the signal from the discrimination section. What is claimed is: 1. A branch telephone usage notification device, characterized in that it is configured to display the contents on a display section and output an alarm message via an alarm section in response to a signal from a touch sensor and based on a signal from a message storage section. 3. The branch according to claim 1 or 2, further comprising a hook control section for controlling the hook of the telephone, and an off-hook function of the telephone is stopped based on a signal from the determination section. Telephone usage notification device.