JPH01245789A - Key telephone set - Google Patents

Abstract

PURPOSE:To obtain an inexpensive set with simple constitution by providing a modulation and demodulation connected to an external interface section and a changeover switch switching the connection of a parallel/serial conversion section toward the modulation demodulation section and the interface section to the circuit section. CONSTITUTION:In the case of data communication through an external line, a changeover switch 8 of a charge management section 4 is switched to connect the parallel/serial conversion section 6 to the modulator-demodulator section 5. A data signal from an external line is sent from an external line interface section 2 to the modulator-demodulator section 5, where the signal is converted into a digital signal and the resulting signal is converted into a parallel data in a parallel/serial conversion section 6 and sent to a central control section 3. In the case of transmitting the data signal to the external line, the parallel data from the central control section 3 is converted into a serial data by the parallel/serial conversion section 6, modulated succeedingly by a modulator- demodulator section 5 and sent to the external line from the external line interface section 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a button telephone device, and particularly to a button telephone device having the function of performing data communication through an outside line and remotely changing system data that determines system operation. Regarding.

[Conventional technology]

Conventionally, remote modification of system data through this type of data communication has been accomplished by separately providing a dedicated section consisting of a parallel-to-serial converter, a modulation/demodulation section, and the like.

[Problem to be solved by the invention]

The configuration of the conventional button telephone device described above has drawbacks such as a complicated configuration because it requires a separate dedicated section, and a lot of waste because it is not normally used.

An object of the present invention is to provide a button telephone device with a simple configuration and no waste.

[Means to solve the problem]

The present invention provides a button telephone device having a central control section that controls the whole, an outside line interface section that controls an outside line, and a circuit section that includes a parallel-serial conversion section and an interface section to an external device, wherein the circuit section includes: , a modulation/demodulation section connected to the outside line interface section, and a changeover switch for switching the connection of the parallel-serial conversion section to the modulation/demodulation section and the interface section; When connected to the interface section to control the external device connected to this interface section, and on the other hand, when exchanging data signals from an outside line, connect the modulation/demodulation section and the parallel-to-serial conversion section. It is characterized by the fact that it performs data communication.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of a key telephone device. The main device 1 includes a central control section 3 that controls the entire system.
, an outside line interface section 2 that controls the outside line, a modulation/demodulation section 5 connected to the outside line interface section, and a parallel
It has a serial conversion section 6, an interface section 7, and a changeover switch 8. The changeover switch 8 is for switching the connection between the modem section 5 and the interface section 7 and the parallel-to-serial conversion section 6 .

In this embodiment, the modulation/demodulation section 5, parallel-serial conversion section 6, interface section 7, and changeover switch 8 are as follows:
It constitutes a fee management section 4. The interface section 7 of this fee management section 4 is connected to the fee management device 9.

Next, the operation of this embodiment will be explained.

Under normal operating conditions, selector switch 8
The l/-serial conversion section 6 and the interface section 7 are connected, and the charge management device 9 is controlled under the control of the central control section 3. When performing data communication via an outside line, the changeover switch 8 of the fee management section 4 is changed over to connect the parallel-serial conversion section 6 to the ml demodulation section 5. The data signal coming from the outside line is sent from the outside line interface section 2 to the modulation/demodulation section 5, where it is converted into a digital signal, and then converted into parallel data at the parallel-serial conversion section 6, and sent to the central control section 3. Conversely, when sending a data signal to an outside line, the parallel data from the central control unit 3 is converted into serial data by the parallel-serial conversion unit 6,
Subsequently, it is modulated by the modem section 5 and sent to the outside line interface section 2.
Send it to the outside line. Such functionality makes it possible to change the system data of the key telephone device and check the operating status of the system from a remote location.

In the above embodiment, the parallel-to-serial converter of the charge management section 4 was used, but the invention is not limited to the charge management section.
Any device may be used as long as it includes a parallel-serial converter. For example, if a printer is connected to the main device, a printer control section can be used.

〔Effect of the invention〕

As explained above, the present invention operates by switching and connecting the modem section and the interface section to the parallel-to-serial converter section, thereby making it possible to change system data and diagnose the system from a remote location through data communication via an outside line. This can be done without separately providing dedicated parts, and therefore the configuration is simple and an inexpensive button telephone device can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a button telephone device of the present invention. ■...Main device 2...Outside line interface unit 3...Central control unit 4...Charge management unit 5...Modulation/demodulation unit 6...Parallel -Serial conversion section 7...Interface section 8...Selector switch 9...Charge management device agent Patent attorney Yoshiyuki Iwasa

Claims (1)

[Claims] (1) In a button telephone device having a central control section that controls the whole, an outside line interface section that controls an outside line, and a circuit section that includes a parallel-serial conversion section and an interface section to an external device, the circuit section includes: A modulation/demodulation section connected to the outside line interface section, and a changeover switch for switching the connection of the parallel-serial conversion section to the modulation/demodulation section and the interface section, and during normal operation, the parallel-to-serial conversion section is connected to the It is connected to an interface section to control the external device connected to this interface section, and on the other hand, when exchanging data signals from an outside line, the modem section and the parallel-to-serial conversion section are connected. , a button telephone device characterized by performing data communication.