JPH0463051A - Data communication facility - Google Patents

Abstract

PURPOSE:To transfer information between an information processing center and data terminal equipment by connecting the line of the information processing center to the data terminal equipment by issuing a connection request to the data terminal equipment by voice to a private branch exchange installed in a local place. CONSTITUTION:The data terminal equipment connected to a private line provided in the local place and which can be connected to a line wire by the private branch exchange 6 is comprised of a terminal NCU 7 and telemetering targeted terminal equipment 8. A voice connection request outgoing means which issues a request to connect the line of the information processing center 30 to the data terminal equipment to the private branch exchange 6 by voice is comprised of the voice synthesis part 16 of a center NCU 2. Thereby, the voice is outputted from the voice synthesis part 16 to an exchange handler 13, and the connection of the line 9 of a center to an extension 12 to which the terminal NCU 7 is connected is expedited, or, retry processing such that a re-call is issued after a telephone is rung off once, etc., is performed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to data communications such as telemeter systems and telecontrol systems substituted for automatic remote meter reading systems for gas, water, electricity, vending machines, etc. In particular, the present invention relates to a data communication facility that exchanges data between an information processing center and a plurality of terminal devices, and centrally manages the terminal devices by a center device installed in the information processing center.

[Prior Art] In this type of data communication equipment, it is generally known that, for example, terminal equipment such as a vending machine or an electricity meter is connected to a terminal NCU connected to a subscriber telephone line. There was a device configured such that the terminal NCU was connected to a center device of an information processing center so that information could be transmitted and received between the two.

[Problem to be solved by the invention] As mentioned in 2, in the past, data communication was not possible until a new subscriber telephone line was drawn for telemetering or telecontrol and the terminal NCU was connected to the subscriber telephone line. Become. Therefore, if you want to perform telemetering or telecontrol on a terminal device such as a vending machine that is installed on the premises of a company, bank, factory, etc. that is equipped with a premises line, it is necessary to It was not possible to use the existing internal telephone line, and it was necessary to install a new subscriber telephone line for telemetering or telecontrol.

In view of the above circumstances, an object of the present invention is to provide a data communication equipment that does not require the installation of a new subscriber telephone line and can perform data communication by using the already installed premises line as is. do.

[Means for Solving the Problems] The present invention exchanges information between an information processing center and a plurality of terminal devices, and performs centralized management of the terminal devices by a center device installed in the information processing center. Data communication equipment, which is installed in a premises and connects a telephone call from the outside line to a desired extension based on a voice connection request from the outside line, and a private branch exchange installed in the premises. a data terminal device connected to a line and connectable to an outside line by the private branch exchange; and a data terminal device provided in the information processing center for connecting the line of the information processing center to the data terminal device by voice to the private branch exchange. and voice connection request transmitting means for transmitting a request, thereby exchanging information between the information processing center and the data terminal device connected thereto.

[Function] According to the present invention, by the function of the voice connection request sending means,
Connect the line of the information processing center to the data terminal equipment connected to the private branch line installed in the premises in order to be able to send a connection request to the data terminal equipment by voice to the private branch exchange installed in the premises. Information can be exchanged between the information processing center and the data terminal device connected thereto.

In other words, it becomes possible to connect a data terminal device connected to a private line installed in the premises and an information processing center by using the private line as is.

[Embodiments of the Invention] Next, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is an overall configuration diagram showing a telemetering system as an example of a data communication equipment according to the present invention.

The information processing center 30 and the business office 5 are connected via telephone lines 9°10.
11 and center side LS3. It is connected via the terminal side LS4. In the premises of the business office 5, a private branch exchange 6, a terminal NCU 7, and a telemetering target terminal device 8 such as a vending machine are connected via a private branch line 12. 13 in the diagram
is an exchange handler that handles on-premises exchanges.

On the other hand, inside the information processing center 30, a center NCU 2 and a center-side terminal device 1 are provided.

FIG. 2 is an internal block diagram of the center NCU 2 shown in FIG. 1.

In the figure, 14 is a control section, 15 is a basic function section, 16 is a speech synthesis section, 17 is a line connection confirmation signal detection section, 18 is a central office line circuit section, and 19 is an I/F section. The basic function unit 15 includes a function for controlling connections related to communication and a function for communicating with the terminal NCU 7. Then, the terminal 31 is connected to the center side terminal device 1, and the terminal 32 is connected to the center side LS3.

FIG. 3 is an internal block diagram of the terminal NCU 7 shown in FIG. 1.

In the figure, 20 is a control section, 21 is a basic function section, 22 is a line connection confirmation signal transmitting section, 23 is an office line circuit section, and 24 is an I/F section. The basic function section 21 includes a function of controlling connections related to communication and a function of communicating with the center NCU 2.

Next, the operation of a telemetering system that is an example of the present invention will be explained. First, a call is made by the center NCU2,
The connection control function included in the basic function section 15 connects the private branch exchange 6 installed in the office 5 and the center line 9 in accordance with a predetermined connection order. Center NCU2
When it is confirmed that the line 9 is connected to the private branch exchange 6 installed in the office 5 by the judgment of the central office line, the voice synthesis unit 16 says, ``This is the center NCU.

We will be checking the vending machine's meter, so please connect to extension ○×exit△. ” is outputted to the exchange handler 13. Upon receiving this, the exchange handler 13 transfers the line to the terminal NCU.
7 is connected to extension 12. Therefore, when the center line 9 and the extension 12 are connected and the terminal NCU7 is activated, the terminal NCU7 transmits the line connection confirmation signal transmitter 2.
2, a line connection confirmation signal, which is a constant frequency signal, is transmitted to the information processing center 30. The transmitted line connection confirmation signal is detected by the line connection confirmation signal detection unit 17 in the center NCU2, confirms that the line 9 is connected to the terminal NCU7, and starts communication with the terminal NCU7.

Here, the center NCU2 will not be able to access the terminal N even after a certain period of time has elapsed.
If the line connection confirmation signal from the CU 7 is not received, the voice synthesizer 16 outputs the voice again to the exchange handler 13 and connects the center line 9 to the extension 12 to which the terminal NCU 7 is connected. or perform a connection trial process such as hanging up and calling again.

The terminal NCU 7 and the telemetering target terminal device 8 constitute a data terminal device that is connected to a private line installed in the premises and connectable to an outside line by the private branch exchange 6. The voice synthesis section 16 constitutes voice connection request transmitting means for transmitting a request to the private branch exchange 6 to connect the line of the information processing center 30 to the data terminal device by voice.

In this embodiment, a telemeter system is shown as an example of a data communication equipment, but the present invention is not limited to this, and may be a data communication equipment such as a telecontrol system.

[Effects of the Invention] The present invention enables a data terminal device connected to a private line installed in a premises to be connected to an information processing center by using the private line as it is, thereby creating a new method for data communication. There is no need to disconnect subscriber telephone lines, and equipment costs can be kept as low as possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the entire telemetering system, which is an example of a data communication equipment according to the present invention. FIG. 2 is an internal block diagram of the center NCU shown in FIG. 1. FIG. 3 is an internal block diagram of the terminal NCU shown in FIG. 1. In the figure, 30 is an information processing center, 5 is a business office, 1 is a center side terminal device, 2 is a center NCU, 6 is a private branch exchange, 7 is a terminal NCU, 8 is a telemetering target terminal device, 16
is a voice synthesis unit that is an example of voice connection request issuing means. 31st g

Claims (1)

[Scope of Claims] A data communication equipment device that exchanges information between an information processing center and a plurality of terminal devices, and centrally manages the terminal devices by a center device installed in the information processing center. , a private branch exchange for connecting a telephone from the outside line to a desired extension based on a voice connection request from the outside line installed in the premises; a data terminal device that can be connected to an outside line through an exchange; and a voice connection request that is provided in the information processing center and that sends a request to the private branch exchange by voice to connect a line of the information processing center to the data terminal device. 1. A data communication facility, comprising: a transmission means, whereby information is exchanged between the information processing center and the terminal device connected thereto.