JPH02177652A - automatic dialing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic dialing device used in a device that automatically transmits dialing signals from a telephone according to the contents of a dialing memory stored in advance.

Conventional technology FIG. 2 shows the configuration of a conventional automatic dialing device.

In FIG. 2, 21 is an automatic dialing device, and 24
is a telephone connected to the automatic dialing device 21. The automatic dialing device 21 includes a dial sending section 23 inside.
and a changeover switch 22. Thick lines indicate telephone lines.

Next, the operation of the above conventional example will be explained. In FIG. 2, when the automatic dialing device 21 dials, the changeover switch 22 connects the telephone line to the dial sending section 23.
Connect to the telephone line and send the dial. After sending the dial, connect the telephone line to the telephone set 24 using the changeover switch 22. By this time, if the telephone set 24 has been enabled for communication by, for example, picking up the handset, the telephone conversation can be started.

In this way, even with the above-mentioned conventional automatic dialing device 21, if the telephone 24 is set in a callable state, it is possible to make a telephone call by automatic dialing.

Problems to be Solved by the Invention However, in the above-mentioned conventional automatic dialing device, when the line is switched to the telephone side after dialing at the dial sending unit, it is difficult to put the telephone into a talking state by lifting the handset of the telephone, etc. There was a problem that if I did not do this, the call would be disconnected.

The present invention solves these conventional problems,
When the handset is not picked up, until the handset is picked up,
To provide an excellent automatic dialing device which does not switch the line to the telephone side, prevents the call from being disconnected even if the user forgets to lift the handset and automatically dials, and issues a warning by sound or display to ask the user to lift the handset. The purpose is to

Means for Solving the Problems In order to achieve the above object, the present invention provides an automatic dialing device with a detector that detects whether the telephone is in a callable state, and when the telephone is not in a callable state, the telephone line is disconnected from the telephone. It is designed to prevent the phone from switching to another side, and also to issue a warning to enable the phone to make calls.

Effect: Therefore, according to the present invention, even if the automatic dialing device is activated without picking up the handset, it is possible to prevent the call from being disconnected after dialing.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 11 is an automatic dialing device, to which a telephone 19 is connected.

12 to 18 are internal blocks of the automatic dialing device. Reference numeral 12 denotes a changeover switch, which switches the telephone line indicated by the thick line in the figure between the automatic dialing device 13 side and the telephone 19 side according to a command from the control section 14.

Reference numeral 13 denotes a dial signal generating section which sends out pulse dial and push button dial signals to the telephone line.

Reference numeral 14 denotes a control section that controls the operation of the entire automatic dialing device. Reference numeral 15 denotes a keyboard section for instructing the control section to memorize and send dials. Reference numerals 16 and 17 are a display and a speaker for issuing a warning when the handset is not picked up.

18 is a photocoupler that detects the current flowing through the telephone.

Next, the operation of the above embodiment will be explained. In the above embodiment, when operating the automatic dialing device 11, the operator registers the dial of the other party using the keyboard 15 in advance. Then, when the user desires to dial, the user presses a dial sending key on the keyboard 15 to give a dial sending instruction to the control section 14 of the automatic dialing device 11.

The control section 11 transmits the pre-registered dial number to the dial signal generation section 13, and causes the telephone line to send out the dial signal. At this time, the changeover switch 12 is connected to the automatic dialing device A side. When the transmission of the dial signal is completed, the control unit 14 connects the changeover switch 12 to the telephone 19 side of B. At this time, if the handset of the telephone 19 is picked up and a conversation is possible, current flows through the telephone line. This current is supplied from a battery within the central office to which the telephone line is connected. When current flows through the telephone line, the photocoupler 18 turns ON, and a signal indicating that the current is flowing is sent to the control section 14, and the control section 14 maintains the selector switch 12 on the B side, thereby making a call.

If the changeover switch 12 is turned to B after sending the dial signal,
If the handset of the telephone 19 is not picked up when connected to the telephone side of the telephone 19, the call will be disconnected if the telephone is connected to the B side. In order to prevent this, the control unit 14 immediately after switching the changeover switch 12 to the B side, the photocoupler 18
Check if it is turned on, and if it is not turned on, that is, if the handset is not picked up, turn the selector switch 12 to A.
Return to side. Then, after a certain period of time, the selector switch 12 is switched to the B side again, and depending on the state of the photocoupler immediately after that, if it is ON, it remains on the B side, and if it is OFF, it returns to the A side. Repeat. Additionally, to alert the operator to pick up the handset quickly,
It is also possible to display a warning on the display 16 and generate a warning sound on the speaker 17. Note that since the photocoupler detects the current in a short time, the call will not be disconnected even if the changeover switch is once switched to the B side and then switched to the A side again within 1 second.

In this way, according to the above embodiment, the photocoupler 18 allows the changeover switch 12 to be switched to the telephone side only when the telephone 19 is ready to make a call. It has the advantage of not breaking. Further, according to the above embodiment, when automatic dialing is performed without picking up the handset, a warning to pick up the handset can be issued.

Effects of the Invention As is clear from the above-mentioned embodiments, the present invention switches the telephone line to the telephone after determining whether the telephone is capable of making a call, and automatically dials the telephone without making the telephone ready to make a call. This has the effect that the call will not be disconnected even if the device is activated.

Furthermore, since a warning can be issued to place the telephone in a talking state, it is possible to start the conversation before the other party determines that there is no response and ends the conversation.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an automatic dialing device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional automatic dialing device. 11... Automatic dialing device, 12... Changeover switch, 1
3...Dial signal generation section, 14...Control section, 15
...Keyboard section, 16..Display device, 17..Speaker, 18..Photocoupler, 19..Telephone, 21.
... automatic dialing device, 22 changeover switch, 23 ... dial sending section, 24 ... telephone set. Name of agent: Patent attorney Shigetaka Awano and one other person Figure 1 Figure 2

Claims (1)

[Claims] a telephone; a dial signal generating unit that outputs a pre-stored dial signal under external control; a changeover switch that switches between the dial signal generating unit and one of the telephones and a telephone line under external control;
Current detecting means detects the presence or absence of current flowing into the telephone from the telephone line, and when the changeover switch is set to the telephone side, if the current detecting means does not detect current, the changeover switch is activated by the dial signal. and a control section that switches the changeover switch to the telephone side again after a predetermined period of time, and switches the changeover switch until the current is detected.