JPH0522465A - Communication system for apartment house - Google Patents

Abstract

PURPOSE:To enable no-ringing communication in extension of a private branch exchange (PBX) installed in an apartment house. CONSTITUTION:A PBX 22 receives a usual call signal from telephone stations 13, 14. After the reply to a call signal, the PBX 22 receives a 2nd dial from a center system 11 and connects a call to each room designated by the 2nd dial. The PBX 22 calls a terminal NCU 16 not by using a usual call signal by a PB signal of 0dBm or below. Thus, no-ringing communication is carried out by using a general subscriber line without use of a non-reining line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention calls the terminal side network control device of each room connected to the extension of a private branch exchange installed in an apartment house without ringing, automatically reading the meter of the gas meter of each room, and the status of security equipment. It relates to a communication system for multiple dwelling houses that conducts surveys and operates / supports equipment using a telecontrol system.

[0002]

2. Description of the Related Art Services such as automatic meter reading of gas meters for general houses are provided by no ringing communication. Here, a configuration of a general no ringing communication system is shown in FIG. FIG. 4 is a block diagram showing the configuration of a no-ringing communication system for general houses.

In the figure, when the terminal side network control unit (terminal NCU) 16 is called from the center system 11 by no ringing according to a predetermined procedure, the terminal NCU 16 communicates with the center system 11 after receiving no ringing call. -Transmit the data of the security device 17 to the center system 11. In the figure, 12 is a no ringing line, 13 and 14 are telephone stations,
Reference numeral 15 is a no ringing trunk, and 18 is a telephone.

[0004]

However, in the above-mentioned no-ringing communication system, since the general subscriber telephone line is used for both telephone and no-ringing communication, a special method using a no-ringing trunk is adopted. That is, since the no-ringing communication service is carried out using one subscription line, the procedure between the center and the terminal NCU is very complicated, and the no-ringing trunk is indispensable.

Therefore, in an apartment house, a private branch exchange (PBX) for exchanging a plurality of lines and communicating within the apartment house.
However, since the above-mentioned procedure of the no-ringing communication service is not supported, it is not possible to call and call each room in the apartment house connected to the PBX extension with no ringing.

In view of the above, the present invention enables no ringing communication even in an extension of a PBX which cannot receive a service by the conventional no ringing communication system, and provides various new no ringing communication systems which have not been available in the past. The first purpose.

In recent years, many devices such as a telecontrol system device, an answering machine, and a fax machine have been developed for automatic incoming calls. These devices receive a 16 Hz ringing signal a certain number of times (usually about 2 to 7 times). It is designed to automatically receive an incoming call. Therefore, it is impossible to connect two or more automatic call receiving devices to one subscriber line. For example, 16H for one subscriber line
When a device that receives an incoming call when the z ringing signal is received twice and a device that receives an incoming call at five times is connected, the call is made even though the user wants to communicate with the device that receives the incoming call at five times. When the signal sounds twice, another device erroneously performs the incoming call operation, and the device that receives the incoming call five times cannot be operated. Further, it is necessary to perform a call for one line and an operation of switching the device to a going-out mode in order to use it for the above purpose.

Therefore, the present invention enables a plurality of automatic call-receiving devices to be connected to one subscriber line in each room, and does not require a switch operation for switching each device called by a PB signal to an out-of-home mode. A second object is to provide a no ringing communication system.

[0009]

(1) The means for solving the problems according to claim 1 of the present invention is to provide each room connected to an extension of a private branch exchange (PBX) 22 installed in an apartment house as shown in FIGS. In the communication system in which the terminal-side network control unit (terminal NCU) 16 is called with no ringing and the terminal device 17 in each room is managed by the externally installed center system 11, the PBX 22 is connected from the telephone stations 13 and 14. After receiving a normal call signal (first dial) and responding, a specific call signal (second dial) from the center system 11 is received and configured to connect to each room designated by the second dial. The call signal is a push button (PB) signal of 0 dBm or less instead of a normal call signal.

(2) The problem solving means according to claim 2 calls the terminal NCU 16 of each room connected to the extension of the PBX 22 installed in the housing complex with no ringing as shown in FIG. In a communication system where management is performed by a sub center installed in the manager's room,
After a specific extension number that supports no ringing is called by a call from the sub center 31 by calling a specific extension of the PBX 22, the sub center 31 sends the number of each room as a second dial, and the PBX 22 As a calling signal for each room, a PB signal of 0 dBm or less is used.

[0011]

(1) In the means for solving problems according to claim 1, when the center system 11 makes a first dial to the PBX 22, the PBX 22 receives a call with a normal call signal (16 Hz) and sends a response signal to the center system 11. Then, the center system 11 that receives the response signal
Makes a second dial to PBX22. Upon receiving the second dial, the PBX 22 calls the terminal NCU 16 in the room designated by the second dial with no ringing (PB signal). After that, the data communication of the terminal device 17 in each room is performed between the terminal NCU 16 receiving the PB signal and the center system 11.

In this way, the PBX 22 receives the second dial from the center system 11 and connects to each room designated by this dial, and as a call signal for each room,
Since a PB signal of 0 dBm or less is used instead of a normal call signal, it is possible to perform no ringing communication even at the extension of the PBX 22 installed in a housing complex.

(2) In claim 2, the sub-center 31 dials a specific extension number and then transmits the telephone number (second dial signal) of each home. PBX22 is the second
Make a no ringing call to the number specified by the dial. That is, since the connection is made by the second dial, if one specific extension is defined, no ringing communication can be performed from the extension such as the manager's room.

[0014]

The present invention calls the terminal side network control unit (terminal NCU) of each room connected to the extension of a private branch exchange (PBX) installed in an apartment house without ringing, and manages the terminal equipment of each room. This is a system having the following features in a no-ringing communication system that is performed by an externally installed center system or a sub-center installed in an administrator room.

A general subscriber telephone line is used without using a special no ringing line. It is possible to call various devices connected to the extension of the PBX without ringing. No ringing calls can be made between PBX extensions.

<First Embodiment> FIG. 1 is a block diagram showing the configuration of a no-ringing communication system for a housing complex according to the first embodiment of the present invention, and FIG.
In the figure, 11 is a center system, 13 is a center side telephone station, 14 is a terminal side telephone station, 16 is a terminal NCU, 1
7 is a gas meter, security equipment, 18 is a telephone,
22 is a PBX.

In the present embodiment, the PBX 22 receives a normal call signal (first dial) from the telephone stations 13 and 14, and after receiving a response, receives a specific call signal (second dial) from the center system 11. , Is configured to be connected to each room designated by the second dial, and the call signal for each room is not a normal call signal but a push button (PB) signal of 0 dBm or less.

Now, the operation of the no-ringing communication system for housing complex will be described with reference to FIG.

When the center system 11 first dials a specific number of the PBX 22 (assuming that only this number supports the non-ringing communication), the PBX is
22 receives an ordinary call signal 16 Hz and returns an ACK1 signal to the center system 11. Upon receiving the ACK1 signal, the center system 11 transmits the number (second dial) of each room connected to the extension of the PBX 22. Upon receiving the second dial, the PBX 22 calls the terminal NCU 16 connected to the extension line by the PB signal with no ringing.

In this case, since the call is made with the PB signal of 0 dBm or less, the terminal NCU 16 communicates without ringing the bell of the telephone 18. In order to prevent the ringing of the telephone 18, the PBX 22 does not perform polarity reversal, or 3
Slow polarity reversal, that is, diagonal reversal, is performed for about 5 seconds.

The received terminal NCU 16 transmits an ACK2 signal to notify the center system 11 that the no ringing communication has been performed. After that, confirm the personal identification number between the center system 11 and the terminal NCU 16, and check the terminal NC.
Specify the port number of U16, and start data communication. Then, the terminal NCU 16 transmits the data of the gas meter, the security device, etc. 17 to the center system 11 according to the instruction from the center system 11.
Then, the line is restored by the restoration signal from the center system 11.

Here, a method of continuous meter reading by this system will be described.

When the center system 11 and the terminal NCU 16 are connected, the signal from the center system 11 can distinguish the command for the PBX 22 from the command for the terminal NCU 16 by the following method.

P transmitted from the center system 11
The B signal is used as a command for the PBX 22 (a special symbol such as # may be added. For example, # 4532 #), and the FSK signal transmitted from the center system 11 is transmitted to the terminal N.
This is a command for CU.

A signal for distinguishing between the PBX 22 and the terminal NCU 16 is put in a part of the signal from the center system 11. However, this method requires the PBX 22 to always decode the content of the signal.

By distinguishing the command for the PBX 22 from the command for the terminal NCU 16 by the above method, continuous meter reading becomes possible. That is, first, the second dial is used to communicate with the room 0001. When the normal communication is completed, the restoration signal is transmitted at this stage. Instead of the restoration signal, dialing 0002 in the next room opens the line in the room 0001 to 0.
Since rooms 002 can be called, continuous meter reading of each room can be performed one after another.

Once the line between the center system 11 and the PBX 22 is connected, a fixed time (3 minutes in the city)
Is available for the basic charge (10 yen). Communication between the center system 11 and the terminal NCU 16 usually ends within 10 seconds. That is, once the center system 11 and PB
If X22s are connected, 10 or more continuous meter readings can be performed within the basic charge, and the operating cost can be greatly reduced.

Further, in this system, the ordinary general subscriber telephone line can be used instead of the no-ringing communication service currently provided by Nippon Telegraph and Telephone Corporation (NTT), so that the operating cost can be reduced also from this aspect. Can be planned.

Further, since the procedure of the no-ringing communication service provided by NTT is complicated and the line on the center side is regulated, the no-ringing communication cannot be performed from the public telephone. Since the general subscriber telephone line is used, the PBX signal can be communicated with the PBX, and the operation of the device can be interactively controlled by voice with the terminal NCU. It can be controlled from the telephone.

When calling each room in the above system, 10 types of PB signals from 1 to 0 can be used, so that up to 10 terminal NCUs can be connected in each room and each terminal NCU can be connected. Generally has 2 to 3 terminals, so that it is actually possible to connect a plurality of 20 to 30 automatic call receiving devices. Further, since each device is called by the PB signal, it is not necessary to switch the switch of the automatic receiving device to the going-out mode.

<Second Embodiment> FIG. 3 is a block diagram showing the configuration of a no-ringing communication system for an apartment house according to the second embodiment of the present invention, in which 31 is a sub-center installed in a manager's room. is there.

In this embodiment, in order to enable control from the extension, the subcenter 31 is connected after the subcenter 31 is connected with a specific extension number that supports no ringing by calling a specific extension of the PBX 22. Transmits the number of each room as a second dial, and the PBX 22 calls as a call signal of each room with a PB signal of 0 dBm or less.

Therefore, the sub-center dials a specific extension number and then connects by the second dial (the telephone number of each room). The same control as in the embodiment can be performed.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

[0035]

As is apparent from the above description, according to the present invention, it is possible to perform no ringing communication even on the extension of a PBX installed in an apartment house, and automatic meter reading in an apartment house, etc., which has been expanding in recent years, It is very effective in managing security equipment.

For example, in an auto-lock type apartment, an outside person cannot easily enter the inside, so automatic meter reading is effective, and once the line is connected, the line with the PBX is not disconnected and the city is successively disconnected. The meter reading can be performed continuously for 10 or more times, and the meter reading cost per house is very low.

Further, when calling each room, 10 types of PB signals from 1 to 0 can be used, so that a plurality of automatic call receiving devices can be connected to one line. Since it is called, the operation of switching the automatic receiving device to the out-of-home mode is unnecessary.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a no-ringing communication system for an apartment house according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of the same operation.

FIG. 3 is a block diagram showing a configuration of a no-ringing communication system for a housing complex according to a second embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a conventional no ringing communication system.

[Explanation of symbols]

11 Center system 13,14 Telephone office 16 Terminal side network controller 17 Terminal equipment 22 Private branch exchange

Claims (2)

[Claims] 1. A communication system in which a terminal side network control device of each room connected to an extension of a private branch exchange installed in an apartment house is called without ringing and a terminal system of each room is managed by an externally installed center system. In the system, the private branch exchange is configured to receive a specific call signal from the center system after receiving a normal call signal from the telephone station and to connect to each room designated by the specific call signal, A communication system for a housing complex, wherein a call signal of each room is not a normal call signal but a push button signal of 0 dBm or less. 2. A sub-center installed in a superintendent's office controls the terminal equipment in each room by calling the terminal side network control device in each room connected to the extension of a private branch exchange installed in an apartment house without ringing. In the communication system to perform,
After the sub-center connects the private branch exchange and the sub-center line by calling a specific extension of the private branch exchange, the sub-center sends the number of each room as a specific ringing signal, and the private branch exchange calls each room. As a signal, a communication system for an apartment house, which is called by a push button signal of 0 dBm or less.