JPH046315Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention allows telephone calls and information transmission to be carried out by using a terminal telephone device installed in each unit of a housing complex such as a condominium, by means of a central monitoring device installed in a control room, etc. The present invention relates to a central control device for controlling an apartment complex.

(Prior Art) Conventionally, when broadcasting communications to each dwelling unit from the management office of an apartment complex, a dedicated voice generator and a telephone line for communications broadcasting were installed in each dwelling unit separately from the telephone line.

(Problems to be solved by the invention) Conventional equipment did not share the communication line for communication broadcasting and the communication line for terminal telephone equipment, so there were a large number of wiring lines.
A separate voice generator was also required. The present invention solves this drawback.

(Means for solving the problem) The terminal telephone device shall have the function of switching the connection line from the handset to the speaker when the on-hook dialing state is established, and this terminal telephone device shall be installed in each unit of an apartment complex. Additionally, a central monitoring device will be installed to control and monitor the terminal telephone device. A plurality of telephone lines from the telephone exchange are connected to the main switch control device, and each terminal telephone device is connected to the main switch control device by a pair of connection lines. When the central monitoring device performs an operation to place the terminal telephone device into an on-hook dialing state, the main switch control device performs connection control between the central monitoring device and the connection line, and the terminal telephone device also controls the connection line. and a speaker are connected, and broadcasting is performed from the central monitoring device to the selected terminal telephone device.

(Example) The present invention will be described in detail below based on the example shown in the drawings.

FIG. 1 shows a central control device showing an embodiment of the present invention.

1 is a terminal telephone device with an on-hook dialing function added; 2 is a pair of connection lines; 3 is a main switch control device; 4 is a main switch control device 3 that receives control signals from the terminal telephone device 1; Reference numeral 5 denotes a main door intercom, that is, a lobby door intercom in the embodiment, and 6 a connection terminal box which serves as a demarcation point between a telephone line 7 from a central office exchange 8 managed by NTT and a connection line 9 in the home.

First, a case will be described in which a contact broadcast is made from the central monitoring device 4 to a selected dwelling unit. In the terminal telephone device 1, _SW1 is a switch for on-hook dialing, and this switch causes the terminal telephone device to enter the on-hook dialing state. LED is a light emitting diode, PTr is a phototransistor that becomes conductive when the light emitting diode is turned on, and ZD is a Zener diode. Also, NW is the telephone circuit, SP is the speaker, and HS is the handset. In FIG. 1, the on-hook dial SW ₁ and phototransistor PTr in the telephone circuit NW are extracted and shown for explanation. 4 in the central monitoring device 4
Reference numeral 1 is a power source for communication with the terminal telephone device 1, and also a power source for controlling the terminal telephone device 1. R ₂ is the resistance,
SW ₂ is a switch for shorting resistor R ₂ .
While the switch SW ₂ is open, the Zener diode ZD of the terminal telephone device 1 cannot be made conductive.
Therefore, when switch SW ₂ is momentarily shorted, the current from power supply 41 makes Zener diode ZD conductive.
Light up the light emitting diode LED. When the light emitting diode LED lights up, the phototransistor PTr becomes conductive. Therefore, the terminal telephone device 1 becomes ready for on-hook dialing, and the connection line 2 is short-circuited by the telephone circuit in the terminal telephone device 1, and the handset is switched and connected to the speaker via the telephone circuit, so that voice can be generated. The speaker SP, which is the device, is put into operation. Therefore, if a communication broadcast signal is sent from the microphone or tape recorder of the central monitoring device to the connection line 2, it will be sent to the speaker SP of the terminal telephone device.
An announcement will be made from.

In the above explanation, the communication broadcast was explained for specified residential units, but it may be broadcast to several units or to all units.

Also light emitting diode LED and phototransistor
It may be replaced with a photocoupler integrated with PTr.

Second, the reception of a call by the terminal telephone device 1 will be explained. When an incoming signal arrives from the central office exchange 8 via the telephone line 7, the incoming signal passes through the connection terminal box 6 and reaches the main switch control device 3. The central monitoring device 4 detects that an incoming signal has arrived at the main switch control device 3, and controls the main switch so that the connection line 2 and the connection line 9 from the terminal telephone device 1 corresponding to the telephone line 7 are connected. Control device 3. Therefore, the terminal telephone device 1 emits a ringtone, displays the incoming call, and resumes normal telephone operation.

Thirdly, a call from the terminal telephone device 1 will be explained. When the handset HS of terminal telephone device 1 is raised,
The connecting line 2 is short-circuited by the telephone circuit NW. The central monitoring device 4 uses a current detector to detect that this current is a call to the telephone line, and connects the connection line 2 to the connection line 9 corresponding to the terminal telephone device 1 that made the call. Therefore, the terminal telephone device 1 can make calls and make calls as a normal telephone.

Fourthly, a call from the lobby door phone 5 will be explained. One or more lobby door phones 5 are installed in each apartment complex. For example, when a push button with a designated number for a certain door is pressed on the lobby door phone 5, a signal is sent to the main switch control device 3 via the connection line 10. When the central monitoring device 4 detects a signal sent to the main switch control device 3, the main switch control device 3 connects the connection line 10 with the connection line 2 corresponding to the terminal telephone device 1 to be called. Therefore, the terminal telephone device 1 is caused to ring a calling signal from the lobby door phone 5. Further, if the control is such that the switch SW ₂ of the central monitoring device 4 is operated, the lobby door phone 5 can directly transmit the sound to the speaker of the terminal telephone device 1. At this point, by raising the handset HS of the terminal telephone device 1, a conversation between the lobby door intercom 5 and the terminal telephone device 1 becomes possible.

When an incoming signal from the telephone line 7 arrives while the terminal telephone device 1 is talking to the lobby door phone 5, the central monitoring device 4 that detects the incoming signal sends the incoming signal to the terminal telephone device 1 without interfering with the call. Send. After the terminal telephone device 1 finishes the call with the lobby door intercom 5, by lifting the handset again, the terminal telephone device 1 is connected to the telephone line 7 and a call can be made.

(Effects) As explained above, the present invention enables centralized monitoring by simply adding a small number of parts to the conventional terminal telephone device with an on-hook dialing function, and by using only one pair of connection lines between the central monitoring device and the terminal telephone device. This allows contact broadcasting from the device to the terminal telephone device.

[Brief explanation of drawings]

FIG. 1 shows a centralized control device showing one embodiment of the present invention. 1... Terminal telephone device with on-hook dial function, 2... Connection line, 3... Main switch control device,
4... Central monitoring device, 5... Lobby door phone, 6
... Connection terminal box, 7 ... Telephone line, 8 ... Telephone office exchange, 9 ... Connection line, 10 ... Connection line, SW ₁ ,
SW ₂ ...Switch, ZD...Zener diode,
LED...Light emitting diode, PTr...Photocoupler,
NW...telephone circuit.

Claims (1)

[Scope of utility model registration request] In each apartment building, a terminal telephone device is installed that has the function of switching the connection line from a handset to a speaker when an on-hook dial call is made, and a central monitoring device is installed to control and monitor the terminal telephone device. A plurality of telephone lines from the central office exchange are connected to the main switch control device, each of the terminal telephone devices is connected to the main switch control device by a pair of connection lines, and the terminal telephone devices are connected to the main switch control device. When an operation for setting the hook dialing state is performed, the main switch control device performs connection control between the central monitoring device and the connection line, and the terminal telephone device connects the connection line and the speaker, A central control device for an apartment complex, characterized in that a communication broadcast is performed from the central monitoring device to the selected terminal telephone device.