JPH03172061A - Visible call originating and response display device - Google Patents

Abstract

PURPOSE:To confirm the operation sequence of connection and response by a caller when originating call is executed by utilizing a no-ringing communication system terminal equipment by interposing and installing a light emitting element turn-on display circuit equipment with a rectifying function in parallel in bi-direction between a telephone line and a terminal equipment. CONSTITUTION:When a user receives new service utilizing the automatic originating function of a terminal equipment 14, a push button switch 4 is pushed. Thus, the terminal equipment 14 is turned to an automatic origination activating state and a direct current from a telephone exchange station 11 flows from a terminal L1(in) of a terminal stand 2 to a resistor R1, a light emitting diode (call) LED1 and a terminal L1(out) of a terminal stand 2, returns in the terminal equipment 14 and flows from a terminal L2(out) of the terminal stand 2 to a terminal L2(in) of a terminal stand 1 and the light emitting diode (call) LED1 is emitted. Continuously, the terminal equipment 14 automatically dials a host center calling telephone number. During the dialing, in a main unit, the light emitting diode (call) LED1 is continuously turned on.

Description

Detailed Description of the Invention [Industrial field of use] The present invention serves as a pre-device for a terminal device connected to a telephone line, and controls the activation of the terminal device, as well as transmitting and communicating with the terminal device. The present invention relates to a visible call response display device that allows a response to be visually recognized.

[Prior Art] Conventionally, no-ringing communication systems have been put into practical use that make it possible to automatically read water and gas meters by utilizing idle time on telephone lines.

FIG. 3 is an explanatory diagram of the conventional technology based on the no-ringing communication method. This prior art calls a no-ringing communication type terminal device 14 installed at a terminal subscriber's home 13 from a host center 10 equipped with a host computer 10a via a no-ringing trunk (NRT) 12 in a telephone exchange 11. This is a system that automatically reads water meters 15a, gas meters 15b, etc. l
6 connects the terminal device 14 to the telephone line I7 to the terminal subscriber's home 13.
A regular telephone connected via
I don't. The arrow direction 17a in the figure indicates the host center 10
This indicates an incoming call to the terminal device l4 using the no-ringing communication method, and this corresponds to automatic meter reading using the general no-ringing communication method. Further, the arrow direction 17b indicates automatic transmission from the terminal device I4 of the no-ringing communication system, which is an emergency call in the event of a gas leak. It is used for low battery warning of terminal equipment Nl4, etc.

In recent years, as a new service that focuses on the automatic calling function of the terminal device 14 of this no-ringing communication method, an emergency warning function for elderly people living alone or an automatic reservation call function of a private car has been developed by installing an obunyon switch 18 on the terminal device I4. This is achieved by adding. At this time, terminal device I4 → telephone exchange II - post center 10
FIG. 4 shows the handon-take procedure in between. User is the third
When the obnoyon switch l8 shown in the figure is pressed, the terminal device l4 of the no-ringing communication system is activated, and following the call activation 20, the dial number transmission 21 is automatically performed. As a result, the host center IO is called via the telephone exchange 11, and a response 22 is sent back from the host center 10.

Next, the terminal device! 4 sends a no-ringing identification signal 23 to the host center 10, exchanges ID24.25 with each other, and receives a response signal 26 from the host center 10.
receive. This performs the necessary communication 27 and ends 2.
8.29.

[Problems to be Solved by the Invention] However, in realizing a new service using the terminal device of the no-ringing communication method in the above-mentioned conventional technology, there are the following problems.

That is, since the terminal device 14 of the no-ringing communication system is originally intended to do without human intervention on the terminal side, such as automatic meter reading, no consideration is given to the human interface.

Therefore, even if the new services mentioned above, such as emergency calls and car hire calls, are implemented with just one option switch I8,
There is an inconvenience in that the caller (user) cannot confirm whether or not the host center 10 is really being called.

The present invention was devised to solve the above-mentioned problems, and is a visual transmission method that allows a caller to check the sequence of connection and response operations when making a call using a no-ringing communication terminal device. The purpose is to provide a response display device.

[Means for Solving the Problems] The configuration of the visible call response display device of the present invention for achieving the above object includes: terminal device activation means for controlling activation of the terminal device; a telephone line; and the terminal device. Terminal device operation display means for interposing a light-emitting element lighting display circuit having a rectifying function in both directions in parallel between the two terminals and displaying the transmission and the other party's response by the light-emitting element. shall be.

[Function] The present invention enables automatic dialing of the terminal device to be started by the terminal device activation means, and also when the telephone exchange and the caller's house are normally connected by the call and when there is a response from the called party. Taking advantage of the fact that the direct current in a telephone line changes polarity, a bidirectional parallel light emitting element lighting display circuit with a rectifying function is used to distinguish the polarity of the reversed direct current using different light emitting elements. By lighting up the display, when a call is made from a terminal device of a no-ringing communication system, a caller can easily visually confirm the operation procedure of connection with a telephone exchange and response from a called party.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a wiring diagram of a visual call response display device showing an embodiment of the present invention. The visible call response display device of this embodiment is installed on the telephone line I7 connecting the no-ringing communication terminal device 4 and the telephone exchange 11 in FIG. 3. In Fig. 1, l is a terminal block for line connection on the telephone exchange side (manpower side), 2 is a terminal block for line connection on the terminal device side (output side), 3 is a terminal block for terminal device connection, R 1, R
t and Rs are resistors, LEDI and LED are light emitting diodes which are examples of light emitting elements, and 4 is a push button switch for starting the terminal device. Terminal Lt (in
) and the terminal L, (out) of the terminal block 2 are directly connected. Terminal L of terminal block L. (in) and terminals L and (out) of the terminal block 2, a resistor R and a resistor R3 are connected in series, and a light emitting diode LED. , LEDffi and a resistor R1 connected in series with them are connected to the resistors R, . Connect in parallel to the circuit R. In the above, the light emitting diode L ED +
is connected with the tilt flow direction from the terminal block l side to the terminal block 2 side as the forward direction, and the light emitting diode L E D t is connected from the terminal block 2 side to the terminal block! Connect in parallel in both directions with the current direction to the side as the forward direction. Further, the strap wire 5 is connected to the resistor in a short-circuited state. Terminal sw of terminal block 3. ,sw
．． Connect the contacts of the push button switch 4 to .

FIG. 2 is an external view of the visible call response display device of the above embodiment. Reference numeral 6 denotes a housing in which the two light emitting diodes LED, , LEDt and the push button switch 4 described above are arranged. The light emitting diode LED. shall be marked with [response].

These light emitting diodes L ED +. L E D
It is preferable to use t that emit light of different colors.

Although not shown in the figure, the above-mentioned terminal blocks 1, 2.3, resistors n1, R2, as, etc. are housed inside the housing 6.

The operation and effect of the embodiment configured as above will be described.

First, the visual transmission response display device of this embodiment has terminals L+(in) and Lt(in) of the line connection terminal block l.
Line L. of telephone line 17 shown in FIG. (OV),t,,
(-48v) and terminal L+ of terminal block 2 for line connection.
Connect the telephone line terminal of the no-ringing communication terminal device l4 to (out) and Lt(out), and connect the terminals S W + and S of the terminal block 3 for terminal connection.
W t as a terminal device! Connect to the control terminal of 4.

In the above, when the user wishes to receive a new service using the automatic calling function of the terminal device l4, the user presses the push button switch 4. As a result, the terminal device l4 enters the automatic call activation state, and direct current is transmitted from the telephone exchange I■ to the terminal L of the terminal block 2. (in) to resistor R1 → light emitting diode (calling) LED, one terminal block 2 terminal L + (
o u t) One terminal L of one terminal block 2, (out) One terminal Ll of terminal block I (in)
Flow to the light emitting diode (call) LED. emits light.

This corresponds to the sequence of call activation 20 in FIG.
The caller can visually confirm that the caller's home 13 and the telephone exchange 1 have been properly connected by lighting the light emitting diode (calling) LED.

Subsequently, the terminal device l4 automatically dials the host center calling telephone number. This corresponds to the sequence of dial sending 2l shown in FIG. 4, during which the light emitting diode (calling) LED. lights up continuously.

Next, when the called host center IO answers, the telephone lines L+ and Lt change polarity, so the DC current flows from terminal L of terminal block 1 to terminal L, (in) to terminal block 2, and to terminal block 2 (out).
) Folds back within one terminal device l4 and terminals L of one terminal block l, (
in) - Light emitting diode (response) LEDt - Resistor R1 - Terminal L (in) of terminal block l, and the light emitting diode (
Response) LEDz starts emitting light. At the same time, the light emitting diode (response) LED is connected in the opposite direction and dims.

This shows the state in which the sequence in FIG. 4 has transitioned to 21-center response 22, and the caller uses the light-emitting diode (response) I-E to indicate that the host center IO has been called normally and has responded. It can be visually recognized by lighting Dt.

In the connection shown in Figure 1, the resistance R! ,R. The circuit divides the current flowing through the telephone lines L1 and Lx to adjust the current flowing to the light emitting diodes LED, , r, and EDt, and the strap line 5 is used when the amount of light is insufficient at a terminal in a remote location. Cut it into a light emitting element LED. , LED. This increases the shunt current to the side and increases the amount of light.

[Effects of the Invention] As is clear from the above explanation, according to the visual call response display device of the present invention, when a call is made from a terminal device using a no-ringing communication method that does not take human interface into consideration, the telephone If you want to check the activation status of the switching center and the response status of a called party such as a host center, you can have the advantage of being able to check it at a glance.

[Brief explanation of the drawing]

No.! The figure is a wiring diagram showing an embodiment of the present invention, Figure 2 is an external view of the above embodiment, Figure 3 is an explanatory diagram of a conventional technology using a no-ringing communication system, and Figure 4 is a transmission in a no-ringing communication system. It is a figure which shows the handon take procedure at the time. 1.2.3...terminal block, 4...push button switch,
LED1LED1... Light emitting diode. Figure 1 Figure 2

Claims (1)

[Claims] (1) Terminal device starting means for controlling the starting of the terminal device, and a light emitting element lighting display circuit having a rectifying function installed in parallel in both directions between the telephone line and the terminal device, and transmitting and transmitting information from the terminal device. 1. A visible call response display device comprising terminal device operation display means for lighting up and displaying a caller's response using the light emitting element.