JPH03284039A - Telephone receptacle device - Google Patents

Abstract

PURPOSE:To allow the telephone set to select the circuit by connecting a dummy line to a telephone line based on a signal from a current detection section and a dial signal detection section and selecting sounding by means of a speaker and a microphone based on the signal from hook-on detection section. CONSTITUTION:A DC loop is closed when a handset of a telephone set 2 in response to a bell tone, a current flows to a detection section 9, which outputs a detection signal. When a special dial button such as a * button is depressed, it is detected by a PB signal detection section 10. A control section 14 closes switch 12 based on the signal from the current detection section 9 and a PB signal detection section 10. Even when a dummy line 13 is connected to the line and the telephone set 2 hooks on, the DC loop of the telephone line is closed to keep the talking state. A switch 3 is closed via the control section 14 by a signal of a hook-on detection section 11 and a speaker 6 and a microphone 7 are used for sounding via the telephone line. Thus, it is not required to visit to a location where a receptacle is located for the purpose of the switching.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone outlet, and relates to an apparatus in which the functions of the telephone outlet are switched by operating a telephone connected to the telephone outlet.

[Prior Art] There is a telephone outlet device that connects a telephone to a telephone line and is equipped with a microphone, a speaker, etc., so that a telephone conversation can be made through the speaker and the microphone. Conventionally, in such a device, in order to switch a call from a handset to a call using a speaker and a microphone of the telephone outlet device, the telephone outlet device must be directly operated. Therefore, for example, if you want to switch from a telephone call using a handset to a telephone call using a speaker and microphone so that many people can talk at the same time, you will have to go to the telephone outlet device, and you will have to go to the telephone outlet. Therefore, it would be convenient and useful if the telephone outlet device could be switched by operating the telephone, and improvements have been desired.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems, and provides a telephone outlet device in which the functions of the telephone outlet can be switched by dialing the telephone.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention connects a telephone to a telephone line, and by performing a predetermined operation, it is possible to receive calls from the telephone through a speaker and transmit through a microphone. A telephone outlet device comprising: a current detection unit that detects that the telephone line becomes a closed circuit; a dial signal detection unit that detects a specific dial signal from the telephone; a hook-on detection unit that detects hook-on of the telephone; It consists of a pseudo line for making the telephone line a closed circuit and a control section for controlling the device, and the pseudo line is connected to the telephone line based on the detection signal from the current detection section and the dial signal detection section, Furthermore, the present invention provides a telephone outlet device configured to switch to a telephone conversation using a speaker and a microphone based on a signal from the hook-on detection section.

[Function] As configured as above, in the telephone outlet device according to the present invention, it is possible to switch a call using the handset to a call using the microphone and speaker by dialing the telephone connected to the telephone outlet device. can.

[Embodiments] Hereinafter, embodiments of the telephone outlet device according to the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram of essential parts of an embodiment of a telephone outlet device according to the present invention. In the figure, 1 is the input/output section,
Inputs and outputs call signals, etc. to and from the telephone line. 2 is a telephone connected to this telephone outlet device. 3 is a switch, which is turned on by a command signal from a control section 14, which will be described later.

4 is the speech network, 2 via switch 3
Converts a line call signal into a 4-line signal (sending signal and receiving signal). 5. is an amplifier which amplifies the reception signal via the speech network 4 as appropriate. A speaker 6 outputs the signal from the amplifier 5 as sound. 7 is a microphone,
Converts outgoing audio into electrical signals.

An amplifier 8 amplifies the audio signal from the microphone 7 to a required level. Reference numeral 9 denotes a current detection unit, which detects the current in the telephone line using, for example, a photocoupler inserted into the telephone line, and confirms the operating state of the telephone 2. For example, 20
Outputs a signal when a current of milliampere or more is flowing. 10 is a PB signal detection unit that detects, for example, a DTMF (multifrequency code) signal caused by a dial operation on the telephone 2;

Reference numeral 11 denotes a hook-on detection unit that detects a signal caused by hook-on of the handset of the telephone set 2 . Reference numeral 12 denotes a switch, which is turned on by a command signal from a control section 14, which will be described later. Reference numeral 13 denotes a pseudo line, which has a resistance value of, for example, about 2.5 kilohms. 14 is a control section, which receives the signal from the current detection section 9 and the F
A command signal for turning on the switch 13 is output based on the signal detected by the B signal detection section of a specific dial signal, and a command signal for turning on the switch 3 is output based on the detection signal of the hook-on detection section 11.

Next, the operation of the telephone outlet device according to the present invention will be explained. First, when a calling signal is input from the telephone line, the input signal is directly transmitted to the telephone 2 and rings the bell (
Alternatively, at the same time, a bell sound can be generated by a tone ringer (not shown). A call can be made by picking up the handset of the telephone 2 in response to the ringing sound. When the handset is picked up, the direct current loop of the telephone line is closed by the telephone set 2, and a current of, for example, several tens of milliamperes flows through the telephone line. This current is detected by the current detection section 9, and the current detection section 9 outputs a signal. And phone 2
The call is made by the speaker 6 and the microphone 7,
To switch to a so-called "hands-free call," a predetermined specific dial, for example, the "*" button is pressed. This "*" signal is detected by the PB signal detection unit 10. Then, the control unit 14 receives the signal from the current detection unit 9 and the PB
Based on the signal from the signal detection section 10, a command signal for turning on the switch 12 is output. In response to this command signal, the pseudo line 13 is connected to the telephone line, and even if the charger 2 is hooked on, the DC loop of the telephone line remains closed, and the telephone line remains in a "talking" state. Then, by hooking on the handset, this is detected by the hook-on detection unit 11,
A command signal for turning on the switch 3 is outputted via the control section 14 based on the signal output from the hook-on detection section 11 .

As a result, using the speaker 6 and microphone 7,
The explanation of the operation of 0 or more that allows you to make a call via the telephone line is when you respond to a ringing signal from the telephone line, but if you first operate the telephone 2 to start a call, you will not be able to communicate with the other party. After the telephone line is connected and the current of the telephone line is detected by the current detecting section 9, the same operation as described above can be performed by pressing the specific dial, for example, the number "*" button.

In the above description, switching to a call between the speaker 6 and the microphone 7 is done by hooking on the handset of the telephone 2, but if a specific dial signal input after the "*", for example "01 '' may be detected by the PB signal detection section and the switch 3 may be switched. Further, although the telephone 2 is assumed to generate a DTMF signal by dialing, a device that outputs a dial pulse signal is used to dial a specific number, and this dial pulse is transmitted to the current detecting section 9. It may be detected by a photocoupler, counted by a counting circuit, and turned on the switch 13.

[Effects of the Invention] As explained above, in the telephone outlet device according to the present invention, in order to make a call using the handset between the speaker and the microphone provided in the telephone outlet, it is necessary to operate the dial etc. of the telephone. You can switch by Therefore, there is no need to go to the telephone outlet for this switching operation, and the switching operation is simple.

[Brief explanation of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a telephone outlet device according to the present invention. In the figure, 1 is an input/output section, 2 is a telephone, 3 and 12 are switches, 4 is a speech network, 5 and 8 are amplifiers, 6 is a speaker, 7 is a microphone, 9 is a current detection section,
10 is a PB signal detection section, 11 is a hook-on detection section, 13
14 is a control section.

Claims (1)

[Claims] In a telephone outlet device that connects a telephone to a telephone line, and enables a speaker to receive calls from the telephone and a microphone to transmit calls through a predetermined operation,
A current detection section that detects that the telephone line becomes a closed circuit, a dial signal detection section that detects a specific dial signal from the telephone, a hook-on detection section that detects hook-on of the telephone, and a current detection section that detects that the telephone line becomes a closed circuit. and a control unit for controlling the device, which connects the pseudo line to the telephone line based on the detection signals from the current detection unit and the dial signal detection unit, and further connects the pseudo line to the telephone line based on the detection signals from the hook-on detection unit. A telephone outlet device characterized in that it is configured to switch to a call using a speaker and a microphone based on the following.