JPH03112247A - Household simplified exchange system - Google Patents

Abstract

PURPOSE:To attach a function to listen to music other than a conventional function provided at a hand-free phone by providing an external input switch at the hand-free phone, and providing an external input terminal and a DP detection circuit at a main device. CONSTITUTION:When it is desired to listen to the music, for example, inputted from the external input terminal 24 in no speech time at the main device 1, a dial pulse is sent out by depressing the external input switch 55 of the hand- free phone 5, and it is detected with the DP detection circuit 19, and a contact 27 is switched to a terminal 2 side. Thereby, a signal outputted from a tuner 25 is sent out as the music from the speaker 51 of the phone 5. Also, when a call is issued from a door phone 2 in the middle way of listening to the music, a call tone is generated from the annunciator speaker 54 of the phone 5, and the contact 27 is returned to a terminal 1 side, and when the phone 5 responds to it, the speech between the phones 2 and 5 can be performed via a crosspoint switch 15. Furthermore, the speech with a line wire can be performed in the case of receiving the incoming from the line wires L1, L2 similarly, which attaches the function other than the conventional function on the phone 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a simple home switching system in which a hands-free phone is connected to a simple home switching system.

[Conventional technology]

FIG. 2 shows a system in which a hands-free phone is connected to a conventional simple home switchboard.

The main device 1 is connected to an outside line L+, Lz, a doorbell 2, and a telephone 4°4' via a notification outlet 3.3';
Hands-free phone 5 is connected. Main device 1 outputs telephones 4, 4' and handsfree phone 5 to outside line L.
t, L-z or door phone 2. The hands-free phone 5 has a loudspeaker 5
1, a microphone 52, a switch 53 for answering, holding, etc., and a notification speaker 54 with a built-in notification outlet.

Conventionally, the hands-free phone 5 is used only for receiving calls, and is installed in a kitchen or the like, and when a call is received from the door phone 2 or an outside line L+ or Lz, the hands-free phone 5 can be used to receive calls without having to move to the location where the telephone 4 is installed. By pressing the response switch 8 of the hands-free phone 5 hung on the wall, etc., a call can be made, and
It has the advantage of not having to hold the receiver.

[Problems to be Solved by the Invention] However, when the hands-free phone 5 is installed, the number of telephones that can be installed in the household simple exchange is reduced accordingly, and furthermore, the hands-free phone 5 cannot make calls. At present, the widespread use of the hands-free phone 5 is hindered due to functional limitations and other reasons.

The present invention has been made in view of the above points, and its purpose is to provide a simple exchange system for home use that has additional functions other than the conventional functions of a hands-free phone. be.

[Means to solve the problem]

The present invention connects a hands-free phone as one of the extensions to a main device that connects an outside line and an extension when an outside call is received or makes an outside call, and has an exchange function such as connection between multiple extensions. In the household simple exchange system, the handsfree phone is provided with an external input signal switch for switching to an external input, and the main device is provided with an external input terminal and a signal sent from the handsfree phone. A detection circuit for detecting a switching signal to an external input is provided, and when the switching signal is detected by the detection circuit, the external input terminal is connected to the handsfree phone. It is.

[Effect]

In the household simple exchange system of the present invention, the main device is provided with an external input terminal, and by pressing the external input switch of the hands-free phone, the hands-free extension line is connected to the external input terminal inside the main device. External inputs such as voice and music input from the external input terminal are sent to the handsfree phone via the main device and output from the handsfree phone's speaker.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. 1
is the main device, which includes outside line L+, Lz, door phone 2, notification outlet 3.3', telephone 4.4', and
Hands-free phone 5 is connected.

Reference numeral 11 denotes an incoming call detection circuit, which detects an incoming call signal from the outside line L2. 12, 13, 14 are contacts, telephones 4, 4
" and the hands-free phone 5 are connected to external lines L+ and Lz, connected between extension lines, or connected to the door phone 2, etc., and each terminal ■ is connected to the incoming call detection circuit 11. The terminal ■ of the contacts 12 and 13 is connected to the cross point switch 15.The cross point switch 15 switches between the terminal ■ and the doorphone by the CPU 16's 111?.The terminal ■ of the contact 14 is connected to the contact 27 via crosspoint switch 15
Alternatively, it is connected to an external input terminal 24, which will be described later. 17.
18.19 is a DP detection circuit, which detects the DP double signal sent from the telephone 4,4" or handsfree phone 5, and
16. Note that the DP detection circuits 17 and 18
．． 19 becomes a PB detection circuit when the signal sent from the ft talk m4.4' or the hands-free phone 5 is a PB double signal. 20 is a notification outlet, and the CP is connected from the doorbell 2.
When a doorbell ringing signal is input through U16, a doorbell ringing sound is generated from the notification outlet 3.3° and the notification speaker 54 of the hands-free phone 5. 21,2
2.23 is a power supply circuit.

24 is an external input terminal to which an external signal such as an audio signal is input from the outside. Reference numeral 25 denotes a tuner for selecting a channel when the external input signal input from the external input terminal 24 is a multiplexed signal. This tuning is performed using the PB multiplied signal PB input from the handsfree phone 5.
The detection circuit 26 detects the signal, and the channel is selected based on this signal. The output of the tuner 25 is connected to the terminal (2) of the contact 27. The contact 27 is used to switch between the terminal 1 of the contact 14 and the cross point switch 15 or the tuner 25.

Reference numeral 55 in the hands-free phone 5 is an external input switch, which is pressed when the user wants to listen to music etc. input as external input. Reference numeral 56 denotes a button, which is a switch used when selecting a channel with the tuner 25, and selects a channel by outputting a PB multiplied signal from a built-in PB transmitter. In addition, if there is no need to tune, tuner 2
5. The PB detection circuit 26 and the bushing button 56 may be omitted, and an amplifier may be used instead of the tuner 25.

Further, 51 is a speaker, 52 is a microphone, 53 is a response switch, and 54 is a notification speaker.

Next, the operation of this embodiment will be explained. When used for telephone calls, when an incoming call (J) is sent from outside line L2, it is detected by the incoming call detection circuit 11, contacts 12, 13, and 14 are switched to the ■ side by the CPU 16, and the telephone 4 .4' and hands-free phone 5 ring. Here, when the response switch 53 of the hands-free phone 5 is pressed, the hands-free phone 5 enters a conversation state with the outside line.

Further, when there is a call from the door phone 2, the call signal is detected by the CPU 16, and the notification outlet 1 to the circuit 2 are detected.
A doorbell ringing sound is sent from the alarm outlet 3.3' and the alarm speaker 54 of the handsfree phone 5.
A ringing tone is generated. When the hands-free phone 5 responds, the call lines of the door phone 2 and the hands-free phone 5 are connected by the cross-point switch 15, and the call state is established.

For example, if you want to listen to music input from the external input terminal 24 when there is no call, press the external input switch 55 of the handsfree phone 5, a dial pulse will be sent, and the D
The dial pulse is detected by the P detection circuit 19, and the CI
'U16 switches the contact 27 to the terminal ■ side. Thereby, the signal output from the tuner 25 is sent out as music from the speaker 51 of the handsfree phone 5. Further, if there is a call from the door phone 2 while listening to music on the handsfree phone 5, a ringing sound is generated from the notification speaker 54 of the handsfree phone 5, and the CPU 16 returns the contact 27 to the When the free phone 5 answers, communication between the door phone 2 and the hands-free phone 5 becomes possible via the cross-point switch 15. Outside line,
, If there is an incoming call from L2, the external line L+,
When it becomes possible to talk between Lm and the hands-free phone 5, and the other telephone 4.4' answers the doorbell 2 or the outside line Ll, L2, when the contact 27 is switched to the ■ side again, the speaker 56 of the hands-free phone 5 The music will start playing automatically again.

In this way, according to this embodiment, the external input signal causes
Even when music or the like is being transmitted from the speaker 51 of the hands-free phone 5, it can function as a telephone compatible with the main device 1.

〔Effect of the invention〕

As described above, according to the present invention, the main device is provided with an external input terminal, and by pressing the external input switch of the handsfree phone, the handsfree extension line is connected to the external input terminal inside the main device. With this, external inputs such as voice and music input from the external input terminal are sent to the hands-free phone via the main device, and music can be heard from the hands-free phone's speaker. We were able to provide a simple exchange system for home use that has the following functions and also has other functions such as being able to listen to music etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a conventional example. 1-Earthenware W 2-Door phone 3.3'-Notification outlet 4.4"-Telephone 5-Hands-free phone 11-・
Incoming call detection circuit 12.13, 14.2'L-m=Contact 15=-Cross point switch 16-CP, U 17.1 B,, 19-, DP detection circuit 20--Notification outlet circuit 21, 22. '23--Power supply circuit 24-External input circuit 25-Tuner 26-PB detection circuit 51
- Speaker 52 - Microphone 53 - Response switch 0 54 Notification speaker 5 External input switch 6 Push button

Claims (1)

[Claims] (1) A hands-free phone is connected as one of the extensions to a main device that connects an outside line and an extension when an outside call is received or when an outside call is made, and has an exchange function such as connection between multiple extensions. In the household simple exchange system, the hands-free phone is provided with an external input switch for switching to an external input, and the main device is provided with an external input terminal,
and a detection circuit for detecting a switching signal to an external input sent from the handsfree phone, and when the switching signal is detected by the detection circuit, the external input terminal is connected to the handsfree phone. A simple household replacement system characterized by: