JPH05316255A - Data communication terminal network controller - Google Patents

Abstract

PURPOSE:To make a high-speed data communication without suffering the restriction on communication speed due to the no-ringing communication while taking much advantage of it. CONSTITUTION:A communication terminal equipment 2 and a data communication terminal equipment 4 are connected. With incoming signals from a communication line 5, communication terminal equipment 3 and a data communication terminal equipment 4 are switched to be connected to a communication line 5. In addition, the controller is provided with the no-ringing communication function and the communication function to a public telephone communication network or the like, recognizing no-ringing incoming when it comes. After the temporarily connected line is disconnected, a terminal originating means 13 uses a public telephone communication network and data communication network or the like to make a terminal originating to the prescribed originating destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication terminal network control device used in a data communication system by no ringing communication.

[0002]

2. Description of the Related Art The main application of a data communication system using no ringing communication is telemeter communication. Telemetering by this no-ringing communication is shown in Fig. 6.
As shown in FIG. 2, a telemeter communication terminal network control device 30 which connects a telemeter terminal device such as a gas meter 35 and a water meter 36 together with a home telephone 34 which is a call terminal device to a center of telemeter communication through a no ringing communication line 33. A telemeter communication system is configured by connecting with the device 31. Telemeter communication terminal network controller 30
Stores basic operating conditions, destination telephone number, etc. in the storage device, operates by receiving no ringing from the center device 31, communicates with the center device 31, and transmits data of the telemeter terminal. It is possible to perform meter reading of a gas meter or the like, or to transmit data of the telemeter terminal device to a predetermined destination at a set time.

[0003]

For telemetering by the above-mentioned no ringing communication, a half-duplex communication system is used at a transmission rate of 1200 bits / second or less. There is such an upper limit of the communication speed because in the current no-ringing service system, the no-ringing control signal (2765 Hz) for controlling the no-ringing trunk 32 is always superimposed on the link as shown in FIG. Then, at the communication speed or higher, the no-ringing control signal becomes noise, and high-speed communication of 1200 bits / second or higher becomes difficult. No ringing communication is effective when applied to low-speed data communication such as meter reading of gas meters as described above, but in data communication that transmits and receives a large amount of data and systems that require real-time communication,
No ringing communication has a problem that is difficult to apply. The present invention has been made in view of the above problems, and provides a data communication terminal network control device capable of performing high-speed data communication without being limited by the communication speed due to the no-ringing communication while making the best use of the advantage of the no-ringing communication. The purpose is to provide.

[0004]

In order to achieve the above object, the means adopted by the present invention is to connect a call terminal device and a data communication terminal device to each other, and to provide a no-ringing communication function and a public telephone communication network. In a data communication terminal network control device having a communication function, when a no ringing incoming call is received from a data communication center device, a no ringing incoming call recognition means for recognizing the incoming call and disconnecting the line, and a predetermined destination using the public telephone communication network or the like. It is configured as a terminal network control device for data communication, characterized in that it comprises a terminal transmitting means for transmitting a terminal.

[0005]

According to the present invention, when an incoming call is received from the data communication center device by no ringing communication, the no ringing incoming call recognition means is operated to recognize the incoming call,
Performs processing to disconnect the connected line once. Then, the terminal transmitting means makes a terminal transmission to a predetermined destination using a public telephone communication network, a data communication network, or the like. This terminal transmitting means transmits a terminal by a destination telephone number stored in advance in a storage device, or makes a terminal transmission by a destination telephone number or the like based on the destination information transmitted from the center device at the time of no ringing incoming call and no ringing communication. Since a communication line other than the line can be used, the data communication can be executed at a high communication speed without being restricted by the data transmission speed of the no ringing communication.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings for the understanding of the present invention. The following embodiments are examples of embodying the present invention and do not limit the technical scope of the present invention. 1 is a block diagram showing the configuration of a data communication terminal network control device according to an embodiment of the present invention, FIG. 2 is a communication sequence diagram of data communication according to the embodiment configuration, and FIGS. 2 is a block diagram showing a configuration of a data communication terminal network control device for each embodiment of FIG. In FIG. 1, a data communication terminal network control device 1 has a communication function between a data communication terminal device such as a telemeter terminal 3 such as a gas meter and a security terminal 4 such as a crime prevention sensor and a center device. Further, in the data communication by the data communication terminal network control device 1 according to the present embodiment, the incoming call can be made by no ringing communication, and the outgoing call can be made at a high communication speed by using the public telephone communication network instead of the no ringing communication. Is configured.

As shown in FIG. 1, the data communication terminal network control device 1 includes a telephone line interface 6, a PB signal (push button dial signal) generator 7, a PB signal decoder 8, N.
R (for no ringing) communication circuit 9, control circuit 10,
Meter interface 11 and sensor interface 1
2. The data communication device 13 is provided. In the above configuration, when there is a no ringing incoming call from the telephone line 5, the PB signal decoder 8 receives the no ringing ringing signal, the control circuit 10 responds to the incoming call by the PB signal generator 7, and the NR communication circuit 9 sends the call. Performs data communication with the terminal. The content of the data signal is the telemeter terminal 3
When the data transmission request is No. 1, the control circuit 10 activates the requested telemeter terminal 3 and transmits the data to the transmitting terminal. When the communication speed is low, such as telemeter communication, it is possible to make an incoming call by the no-ringing communication and an outgoing call of the terminal according to the request of the calling terminal.

However, a terminal device that requires a high communication speed as a data communication terminal, for example, a security terminal 4 as shown in this embodiment, requests a high data communication speed that cannot be handled by no ringing communication. In this case, when a data communication request is received due to no ringing incoming call, the NR communication circuit 9 and the PB signal decoder 8 and PB
After recognizing the content of the data transmission communication request by communicating with the calling terminal by the incoming call recognition means composed of the signal generator 7 and the control circuit 10, the no-ringing incoming call is disconnected and the public telephone communication network is used for the data transmission. And carry out predetermined high-speed data communication.

The data communication device 13 in FIG. 1 operates when the telephone number of the callee, the operating conditions, etc. are stored in advance in the storage device, and the control circuit 10 outputs a logic output 14 for data transmission. For example, the data of the sensor 4 is transmitted to a predetermined destination using a public telephone communication network. FIG. 2 is a sequence diagram showing a control operation for transmitting data through the public telephone communication network after receiving no ringing and recognizing the incoming call.
After the step S), the data communication terminal network control device 1 receives a no-ringing call and responds to the incoming call to perform the data communication to activate the specified data terminal. After the data communication, the receiving circuit is disconnected and the no-ringing communication is performed. To finish. After that, the data communication terminal network control device 1 is operated under a predetermined operation condition, and the data of the data terminal is transmitted to a preset destination using the public telephone communication network at a predetermined communication speed. It is a thing.

FIG. 3 to FIG. 5 show an embodiment in which after receiving a no-ringing call, a terminal is sent by a communication network capable of high-speed data communication other than the no-ringing communication.
In the embodiment shown in FIG. 3, the data communication circuit 15 is provided in the data communication terminal network control device 1, and the transmission condition such as the destination telephone number transmitted from the transmission terminal at the time of no ringing incoming call is stored in the control circuit 10. The data is stored in the device, and after the no-ringing communication is cut off based on the data, the terminal is sent. The embodiment shown in FIG. 4 has a plurality of data communication devices 1.
6, 17-18, each of which stores operating conditions, a destination telephone number, and the like in a storage device. When no ringing arrives, the control circuit 10 activates one of the data communication devices 16 to 18 corresponding to the selection signal by the logical output 19 to 21 by the selection signal (no ringing calling signal) designated by the calling terminal. The activated data communication devices 16 to 18 operate under the stored operating conditions,
The data of the data terminal is transmitted to a predetermined destination to be stored. The embodiment shown in FIG. 5 includes a data communication device 22 connected to the data communication terminal network control device 1 by a communication line, and when a no ringing incoming call is received, the incoming call is recognized and the no ringing communication is cut off, and then the control circuit 10 is connected. The data communication device 22 to which the data of the data terminal is transmitted from the communication interface 23 by the operating condition stored in advance in the storage device, the destination telephone number, or the operating condition received from the center device by no ringing communication,
It operates based on the destination telephone number, etc., and makes a terminal call to a predetermined destination.

[0011]

As described above, according to the present invention, when there is an incoming call from the data communication center device by no ringing communication, the no ringing incoming call recognition means is operated to recognize the incoming call and disconnect the line once connected. Perform processing to Next, the data from the data communication terminal device activated by the terminal transmission means is transmitted to the predetermined destination by using the public telephone communication network, the data communication network, or the like.
This terminal transmitting means is a means for transmitting a terminal by a destination telephone number stored in the storage device in advance, or a terminal by a destination telephone number based on destination information transmitted from the center device when no ringing is received. Since communication lines other than the no-ringing communication line can be used, data communication can be performed at a high communication speed without being restricted by the data transmission speed of the no-ringing communication.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a data communication terminal network control device according to an embodiment of the present invention.

FIG. 2 is a communication sequence diagram showing the order of communication operations according to the embodiment.

FIG. 3 is a block diagram showing a configuration of an embodiment of a data communication terminal network control device according to the embodiment.

FIG. 4 is a block diagram showing a configuration of an embodiment of a data communication terminal network control device according to the embodiment.

FIG. 5 is a block diagram showing a configuration of an embodiment of a data communication terminal network control device according to the embodiment.

FIG. 6 is a block diagram showing a configuration of no ringing communication according to a conventional example.

[Explanation of Codes] 1-Data communication terminal network control device 2--Home telephone (call terminal device) 3--Telemeter terminal (data communication terminal device) 4-Security terminal (data communication terminal device) 7 --PB signal generator (incoming call recognizing means) 8 --PB signal decoder (incoming call recognizing means) 9--NR communication circuit (incoming call recognizing means) 10 --Control circuit (incoming call recognizing means) 13, 16, 17 , 18, 22 ── Data communication device (terminal transmitting means) 15 ─ Data communication circuit (terminal transmitting means)

Claims (5)

[Claims] 1. A data communication terminal network control device in which a call terminal device and a data communication terminal device are connected, and which has a no-ringing communication function and a communication function to a public telephone communication network, etc., from a data communication center device. No-ringing incoming call recognizing means for recognizing the incoming call and disconnecting the line after receiving the incoming call, and terminal transmitting means for transmitting a terminal to a predetermined destination using the public telephone communication network or the like. Terminal network controller. 2. The terminal network control device for data communication according to claim 1, which is a terminal transmitting means for transmitting a terminal to a predetermined destination by a destination telephone number stored in advance in a storage device. 3. The terminal network control device for data communication according to claim 1, which is a terminal transmission means for storing a transmission destination telephone number transmitted from the center device at the time of no ringing incoming call and transmitting a terminal according to the transmission destination telephone number. 4. A plurality of storage devices, each of which is selected by a no-ringing ringing signal sent from a no-ringing trunk by dialing from a center device when a no-ringing call is received, and stores a predetermined destination telephone number for individually making a terminal call. It is a terminal transmission means.
The terminal network control device for data communication described. 5. The data communication terminal network control device according to claim 1, which is a separate terminal transmission means activated by support from a center device when no ringing is received.