JPH0198352A - Cordless electronic type key telephone system - Google Patents

Abstract

PURPOSE:To eliminate the need for provision of an exclusive wiring between a key telephone set and a master set by connecting a speech and control line between each key telephone set and the master set by radio line. CONSTITUTION:When a call comes from a trunk line, an incoming signal is sent to a control unit 23 via a trunk line interface PKG 21. A control unit 23 throws a changeover switch 24 to the position of contact (a), connects a transmitter 18 to radiate a selection signal from a antenna 1 to energize a ringer 28 of a prescribed cordless key telephone set. Since a prescribed key telephone set receiving the selection signal rings, the operator hooks off the handset. Then the speech state is attained and changeover switches 24, 26 are changed over depending on the state of transmission/reception. In dialing a number from a key telephone set to other key telephone set or a trunk line, call information and an extension number or an external line number are received to the antenna 1 and sent to the control unit 23.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an electronic key telephone device, and in particular, to wireless communication paths and control lines between the main device and the key telephone device, and the accompanying wirelessization of the control line between the main device and the key telephone device. The present invention relates to a button telephone device that takes power feeding into consideration.

(Prior Art) In this type of conventional electronic key telephone device, the connection between the main device and the key telephone device is wired using two or more pairs of cables for one communication path and one control path. In addition, power is supplied to the key telephone from the main device via a control path (one pair).
? It was done through.

(Problems to be Solved by the Invention) Conventional electronic button telephone devices require indoor wiring, even if they have only two pairs, making it difficult to change the installation location and requiring time for installation work. However, construction costs were high. te When installing the above-mentioned button telephone after the building (house or building) is completed (if piping has not been prepared).

This had the disadvantage that the wiring had to be installed on the floor or the light surface of the wall, which caused an aesthetic problem.

The purpose of the present invention is to solve the above-mentioned drawbacks, and to provide a cordless electronic button telephone device that is easy to install and move, and does not impair its aesthetic appearance even without special installation work. There is a particular thing.

(Means for Solving the Problems) In order to achieve the above object, a cordless electronic key telephone device according to the present invention includes a plurality of key telephones and a main unit, in which each of the key telephones and the main unit are connected to each other. A communication/control line with the apparatus is connected wirelessly, each of the button telephones is coated with a solar cell gold film, and each button telephone is configured to be supplied with current from each solar cell.

(Example) The present invention will be described in more detail below with reference to one drawing.

FIG. 1 is a diagram showing the appearance of the main device and key telephone of the cordless electronic key telephone device according to the present invention.

The main device 16 is equipped with an antenna 1t for a communication path and a control path on the top surface of the device.

The key telephone 17 also includes an antenna 6 for communicating with the main device 16.

In addition, the front surface of the key telephone 17 is provided with detailed switches and the like for realizing normal functions. That is, speaker 5. Display board 7゜Central line button 8, Extension button 9. A hold button 10, a function button 11, a button 12, a microphone 14, and an audio volume 15 are provided. Furthermore, a solar cell 13 is attached to the lower front surface.

FIG. 2 is a circuit diagram of the main device and the cordless button telephone.

The main device 16 includes a selector switch 24, a transmitter 18, and a receiver 1.
9. Key tele interface PKG (package) 20
．． Office line interface PKG21, time division switch 22
and a control unit 23t.

On the other hand, the cordless button telephone 17 has a changeover switch 25
．． Receiver 26. Transmitter 27, ringer 28% telephone control unit 29. Dial circuit 30, key switch 311 display section 32. Data transmitting/receiving circuit 33. It is composed of a power receiver 34 and a solar cell 35.

The changeover switch 24 of the main device 16 is controlled by a control unit 23, and the changeover switch 25 of the cordless button telephone 17 is controlled by a telephone control unit 29.

The changeover switch 24 of the main device 16 is switched to the contact side when it is waiting for an incoming call from the central office line or when it is waiting for a call from the cordless button telephone 17.

It is connected to the receiver 19.

- Also, cordless button telephone 179 changeover switch 2
5 is switched to the contact a side in a good waiting state, and the receiver 26
It is connected to the.

The main device 16 is supplied with power by an AC cord (not shown).

When there is an incoming call from the central office line, the central office line interface PK021t
- to the control unit 23 via.

When the control unit 23 determines that the call is coming from the central office line, it switches the selector switch 24 to the contact a side, and turns on the transmitter 18t.
-Connect.

The antenna 1 then sends a selection signal to the transmitter 18' via the key telephone face PK020t to ring the ringer 28 of the predetermined cordless button telephone.
Fire more.

When the above selection signal is received, the next predetermined cordless button telephone 1
The ringer 28 of No. 7 will ring.

As a result, the handset of the cordless button telephone 17 is taken off-hook, and when the telephone is in a talking state, the selector switch 24.
26, switching control is performed depending on the transmission and reception status.

Next, when a call is made from the cordless button telephone to another cordless button telephone or to a central office line, the extension number or external number is received by the antenna 1 and transmitted to the control unit 23.

If it is an extension number, the control unit 23 activates the transmitter 18 and sends a selection signal to other cordless button telephones. In the case of an outside line number, a selection signal is sent to the central office line.

Power is supplied to the data transmitting/receiving circuit 33, telephone control unit (TCPU), transmitter 26, receiver 27, etc. of the cordless button telephone 17 by a solar cell 35 via a power receiver 34.

(Effects of the Invention) As explained above, the button telephone device according to the present invention is configured so that the connection between the main device and the button telephone is wireless, and each button telephone is provided with a solar cell to supply power. Therefore, it can be easily installed without the need for special wiring between the main unit and the key telephone.Furthermore, since power is supplied from the solar cell for each button telephone, the installation location of the key telephone can be easily moved. It has the effect of being able to

[Brief explanation of the drawing]

i@1 Figure 1 is an external view of the main unit and button telephone of the cordless electronic key telephone device according to the present invention, and Figure 2 is a circuit diagram of the main unit and the button telephone. 1.6...Antenna' 2...Lamp 3...Switch 4...Fuse 5...Speaker
7... Display panel 8... Station line button 9.
...Extension button 10...Hold button 11-...Function button 12...Button button 13...Solar battery 14...Microphone 15...Volume volume 1
6... Main device 17... Key telephone 18.27
...Transmitter 19.26...Receiver 20 = *
-f y type:x, -xP KG (K8 I)
21... Office line interface PKG (COI) 22.
... Time division switch (T8W) 23 ... Control unit (CPU) 24.25 ... Changeover switch 28 ... Ringer (R/G) 29 ... Telephone control unit (TCPU) 30 ...
Dial 31...Key switch 32...LIi
mD 33...Data transmitting/receiving circuit 34...Power receiving (P8R) 35...Solar cell patent applicant NEC Co., Ltd. agent Patent attorney Inoro Bin-91・lb (Sat: tja:) 2 Figure

Claims (1)

[Claims] In a button telephone device comprising a plurality of button telephones and a main device, a call/control line between each of the button telephones and the main device is wirelessly connected, a solar battery is provided in each of the button telephones, and each button A cordless electronic button telephone device characterized in that each telephone is supplied with current from each solar cell.