JPS61101193A - Key telephone system - Google Patents

Abstract

PURPOSE:To provide a low-cost key telephone system that excludes any setting error by connecting directly a diode to a key input board and reading a set value in accordance with the connected status of the diode. CONSTITUTION:With power supply on, a microcomputer 7 detects the board to which a diode 11 for setting telephone set, then informs the value to a master station through a communication part 8 The station, as conventionally, discriminates the telephone set model and performs a control corresponding to the model. Thus, because the model setting is done by connecting the diode to a key input board, no additional board is necessary, and furthermore, the diode is mounted on a printed circuit board in production line to exclude errors in setting. In the figure, 9 and 10 represent a display part and key part to be scanned by the microcomputer 7, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a button telephone device to which many types of telephones can be connected.

Conventional configurations and their problems In general, the higher the functionality and larger size of a button telephone device, the greater the number of telephone models (for example, the number of central office line buttons is 0.6, 1,
2.24, there is a desire to connect a general telephone, a speakerphone telephone, a telephone with a liquid crystal display, etc. to each of these telephones, and various kinds of telephones have been developed to meet this demand. However, when considering the microcomputers used inside, it is not a good idea to have so many masks, and it is desirable to cover the entire phone with at most two types. In this case, since each telephone is controlled differently, it is necessary for the main installer to remember the model (attribute) of the telephone, and this has been accomplished in the past by the following method.

(1) Method of setting on the main device side (2) Method of setting on the phone side and notifying the main device side When setting the attributes of a telephone on the main device, there is a possibility that attributes different from those of the actually connected telephone may be set, and the replacement work becomes extremely troublesome when replacing the telephone.

On the other hand, in the case of (2), such problems are relatively rare, but the conventional button telephone devices are configured as shown in Figure 1, and someone carelessly changes the settings. The problem was that it could change.

That is, in FIG. 1, 1 is a microconopter that controls the telephone, 2 is a communication section that communicates with the main device, 3 is a display section such as a light emitting diode that is dynamically displayed by the microconopter 1, and 4 is a display section such as a light emitting diode. Similarly, a part of keys scanned by the microcontroller 1,
5 is a digit switch for setting the telephone model.

Reference numeral 6 indicates that the microcomputer 1 reads the digit switch 5 to control the speakers, microphones, etc., and notifies the main device of the value through the communication section 2. As a result, the main device determines the model of the telephone and performs control for that model. However, in this case, (a) the digit switch 5 is exposed to the outside;
There is a possibility that someone may accidentally tamper with you.

(b) In order to provide the Tidgit switch 5, the port of the microconopter 1 is occupied by it.

() → It is very expensive because it uses a digit switch.

There was a problem.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the above-mentioned conventional examples, and to provide an excellent key telephone device that is inexpensive and free from setting errors.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is such that a diode is directly connected to a key input port, and a set value is read based on the connection state of this diode.

Description of examples FIG. 2 shows the configuration of an embodiment of the present invention.

In FIG. 2, 7 is a microcomputer that controls the telephone, 8 is a communication section that communicates with the main device, 9 is a display section such as a light emitting diode that is dynamically displayed by the microcomputer 7, and 10 is a display section of the microcomputer 7. A diode 11 is connected to a key input port for setting the telephone model. A diode 12 is a control line for controlling speakers, microphones, etc.

The model setting value of the telephone is determined by which port for key input the diode 11 is connected to.

Next, the operation of the above embodiment will be explained. In Figure 2, when the power is turned on, the microcomputer 7
detects the port to which the diode 11 is connected, and thereby reads the model setting value of the telephone. Then, the value is notified to the main device side through the communication section 8. This Ki main device identifies the phone model as before,
Performs control for that model.

In this way, according to the above embodiment, the configuration is such that the model setting is performed by connecting the diode to the key input port, so no separate port is required, and the diode is installed on the printed circuit board during production. By this,
It is not exposed to the outside and cannot be accidentally tampered with by someone, which is extremely advantageous in practical terms.

Effects of the Invention The present invention has the above-described configuration, and provides the following effects.

(a) Only the addition of a diode is required and the cost is very low.

(b) Once the diode is installed at the production stage, there is no need to worry about changing its set value mid-way, unlike with digit switches.

(C) The setting values set by the diode are configured so that they are notified to the main unit when the phone is turned on, so there is no need to set them each time on the main unit, and there are almost no setting errors. become.

2゜ with advantages such as

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional key telephone device, and FIG. 2 is a block diagram of a key telephone device according to an embodiment of the present invention. 7...Microcomputer, 8...Communication Department, 9...
LED section, 10...KEY section, 11...diode, 12...telephone control line. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] This button telephone device is configured so that model settings are made by connecting a diode to a key input port, and is also configured to read the model setting values when the power is turned on and notify the main device of the settings.