JPS5897955A - Network controller - Google Patents

Abstract

PURPOSE:To expand the use and service of a data collector, by switching terminal charging and center charging based on external charging form information, and selecting the charging form in accordance with the purpose of data communication. CONSTITUTION:When a terminal device 3 sends a calling request signal to a network controller 5, a circuit monitoring circuit 13 monitors the use state of a telephone circuit 1 and after a calling acceptance signal is transmitted, an automatic dialing circuit 11 receives selective dial information and charging form information from the device 3 and sends out a dial signal corresponding to the selective dial information. When the charging information shows a terminal charging form, the circuit 13 detects polarity inversion and when an automatic termination network control circuit 8 receives a center answer signal, the circuit 11 activates a code transmitting circuit 9, thereby holding data communication is held in readiness. When the charging information shows a center charging form, the circuit 8 receives a center answer signal while the circuit 13 does not detect polarity inversion, and then the circuit 11 activates the circuit 9, holding the data communication is held in readiness.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a network control device connected to a subscriber telephone line. The second aspect relates to a network control device that can be used for either terminal charging or center charging when a terminal makes a call.

In recent years, subscriber phone number 8! (hereinafter referred to as ``telephone line''), a central device is sent to a remote location to collect data from a certain terminal device, such as an automatic meter reading device that automatically reads the usage of water, gas, electricity, etc., has been put into practical use. It is being done.

This type of data collection device using a telephone line uses the telephone line to transmit data by utilizing the time when no telephone calls are being made. This rounding, conventional devices have a call priority function to avoid interfering with calls, and when transmitting data,
It has main functions such as a no-ringing connection function that connects to the telephone line when the telephone bell rings, and a station power operation function that operates with a small amount of current from the telephone line as the operating power source.

Nine, this kind of data collection device using O telephone line,
The end that moves from the center device to the terminal device 3K has not arrived I! The main function is polling, but as this data collection device has become widespread, its purpose has expanded to include not only the terminal call reception function but also the terminal transmission function (calling) that activates the center device from the terminal device. 0 devices requested
For example, vending machine tube jl! Reporting failure information for collecting sales volume information at I-equipment, reporting when an abnormality occurs for periodic status monitoring of equipment management equipment, automatic meter reading of ordinary household meters, reporting when there is a fire or theft, etc. It is expected that it will develop and expand into various uses and services.

However, when a terminal calling function is added to a data collection device using a telephone line, consideration must be given to the billing format. On the other hand, when a conventional telephone line is used exclusively for data communication, network control equipment that has an automatic call/receive function is used on the premise that a terminal billing system is used, and when a call is made from a terminal, the called party, i.e., the - No consideration was given to the center billing format charged on the evening side.

The present invention improves on this point by providing a round network control device equipped with an automatic dialing function that can switch the billing format between calling party billing (terminal billing) and called party billing (center billing) when a terminal makes a call. The purpose is to provide.

The present invention proposes that the called side (center) charge the terminal call Ii# in cases that are not directly related to the subscriber who owns the telephone line, such as a breakdown in a vending machine, and add 9° crime prevention. It is an object of the present invention to provide a network control device that can automatically adopt the calling side (terminal) II money method when the calling party (terminal) is involved.

The present invention is arranged on the subscriber side of the subscriber's telephone line, and is configured to be able to connect the subscriber telephone @IIIK telephone or the terminal device of the number, and responds to the call request from the terminal device. In a network control device that transmits subscriber telephone line alK selection dial information to establish an OII connection with a center side device, and after completion of this connection, controls the terminal device to perform data communication between the terminal device and the center side device, the terminal device According to the information from the device, billing information is loaded, and if this billing information is in terminal billing (caller billing) format, the selected dial information is stored within a predetermined time after exiting (by detecting polarity reversal of telephone line O). After receiving the center response bias from the center side device, it performs sum control to enter the data communication state, and when the billing information is in the center billing (called party billing) format, the selected timetable information is transmitted for a predetermined time of H3m. The present invention is characterized in that it includes a control means for controlling to enter a data communication state after no polarity reversal of the telephone line is detected and a center response signal is received from the center side device.

An embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of main parts of an embodiment of the present invention. In FIG. 1, the system is roughly divided into a telephone line 1, a telephone 2, a terminal device 3.4, and a network control device 5 to which these are connected, which is a feature of the present invention. Although FIG. 1 shows the connection state of the terminal device 3 in detail for easy understanding, the same applies to other terminal devices.

That is, the telephone line l is connected to an automatic incoming network control circuit 8 via a switch circuit 7.

This automatic incoming network control circuit 8Fi is connected to the code transmission circuit 9. This code transmission circuit 9 is a switch circuit lO
Terminal devices are connected 3km through the network.

An automatic dialing circuit 11 is connected to this terminal device 3. The output of this terminal device 30 is led to the automatic dialing line 11 via the switch circuit IO.

Further, an automatic dialing circuit 11Fi is connected to the telephone line ll11 and is connected to an @ line monitoring circuit 13 via a switch circuit 14. The output of this line monitoring circuit port is led to an automatic dialing circuit 11. One output of this automatic dial circuit 11 is sent to the control terminal of the switch circuit IO, the other output is sent to the control terminal of the switch circuit 14,
Still other outputs are led to the control terminal of the switch circuit 70, still other outputs are led to the automatic incoming network system # circuit 8, and still other outputs are led to the code transmission circuit 9. Oh, that phone! I! 2 and a switching contact connected to the telephone port 111 of the switch circuit 7, an off-hook detection circuit 15 is connected. The output of this off-footer detection circuit 15 is led to the automatic incoming network control circuit 8 and the automatic dial II m 11 K, respectively. Also.

The output of the automatic incoming network control circuit 8 is automatic dial II.
jl 11 K is being guided.

Also, the 1st rI! In J, 18 and 19 connect the ToL network control device 5 and the terminal device 3.4 through Kegel (four-core cables), respectively. The types of interface wires for this cable and the cable are data signals 918, %191. Common return line 182.192, call request signal line 18. ．． 19° and a call acceptance signal [1184, 194].

Also, 21-23# in Figure 1! Each signal layer is shown.

FIG. 2 is an operation time chart at the time of terminal transmission, showing key input or output signal waveforms indicated by crosses in FIG. 1. In Figure 2, (a) H call request signal, (d) call acceptance signal, (f) Fi data signal, (1)), (C), (
8) respectively indicate control signals.

Also, the data signal (f) in the iris diagram 2! indicates selected dial information, l indicates billing information, and 轻 indicates data information, respectively.

In this way, with the circuit configuration in 1, the switch circuit 7.10F1 is usually a signal! When multiple terminals are connected to the 121% η side and incoming calls are received, the automatic incoming network control circuit 8 operates in that state. When a terminal makes a call, seven switch circuits are switched to the OFF side as required, and the switch circuit IO is switched to the signal line 2311. The automatic incoming network control circuit 8 receives a calling signal O for 7-ringing connection when a terminal call arrives, operates the power supply for one station, and sends out a terminal selection enable signal.The code transmission circuit 9 receives a terminal selection code, and transmits and receives data. % (cj after terminal selection) The off-hook detection circuit 15 performs response signal transmission and data modulation/demodulation, and the 0-line monitoring circuit 13 detects the off-footer state of the stain structure 2 due to current changes in the telephone circuit, interference, and speed changes, etc. The usage status of the telephone line l is monitored when the terminal makes a call. switch circuit 1
4ti Normally open type 11: Yes, and is controlled to open and close as necessary when the terminal makes a call.

The automatic dialing circuit 11 is an interface circuit with the terminal device 3.4 when making a terminal call, receiving selected dial information, sending out automatic dialing, and monitoring tie! Performs function and billing format information determination, etc. The terminal device 3.4 has an interface circuit for network control 1111t5 and performs sending of one selection dial information and billing format information, data transmission and reception, and the like.

The operation of the network control device 5, which is a feature of the present invention, will be described in more detail.

First, the operation when the terminal receives a call will be explained.

Switch circuits 7 and 1O are connected to the signal [21%22 side, respectively. Automatic incoming network control circuit 8Fi telephone line lo
After the @-character is reversed, a minute current is supplied from the telephone port I11, and a call signal for no-ringing connection is received from the center side device (not shown). After this, a terminal selectable signal for the terminal device 3.4 is sent to the center side device. At the edge, the code transmitting circuit 9 receives the terminal selection code sent from the center side device, and then selects and connects the specified terminal device 3 or t4 and sends a response signal to the center side device, allowing communication. I'm in state 9. Thereafter, using the data modulation/demodulation function of the code transmission circuit 9, the data signal line 18 and the terminal device 3 and the terminal device 3 and 3 are connected via the data signal line 18 and the terminal device 3 and
Data is exchanged with i4.

When the telephone 2 goes off-hook during communication, a loop current flows through the telephone circuit, especially when the off-hook detection circuit 15
works. This off-hook detection output stops the operating current of the automatic incoming network control circuit 8 and stops sending out the response signal, disconnects the automatic incoming network control 11 circuit 8 from the telephone line 1, and gives priority to the use of the telephone 2. . At this time, the center side device performs one-day operation due to the stop of the response signal.Furthermore, when a terminal call is received, due to the nature of data communication such as automatic meter reading, priority is given to the data communication side and the call side. method is adopted. Further, when normal data communication is completed, the polarity inversion state of the telephone line 1 is restored to the normal state by the recovery operation of the center side device, and the operating current of the automatic incoming network control circuit 8 is stopped. At the same time, the sending of the response signal is stopped, and everything is restored to its initial state slK.

Next, let's look at the 25th action when making a call! The explanation will be based on the operation time chart shown by JK. Terminal device 3 for simplicity
The case where a terminal call is made from is explained.

First, the percentage billing format will be explained using the following table.

Two types of table billing formats are used, a calling party billing (terminal billing) format and a called party billing (center billing) format, depending on the terminal origination 0@MK. In other words, caller billing (center billing) is used for cases that are directly related to the subscriber who owns the telephone line, such as disaster prevention and crime prevention, and cases that are not directly related to the subscriber, such as the breakdown of a vending machine. In this case, Kli takes the form of called party charging (terminal charging). In order to receive a data communication letter LLK in the caller billing format, after the terminal device sends the selected dial information, the telephone aaom nature is reversed and the center response signal from the center device is received within a predetermined time. In order to receive a data letter IIK in the called party billing format, it is necessary to receive a center response signal from the center device without reversing the polarity of the telephone @- within a predetermined time after sending the selected dial information from the terminal device. Under other line conditions, wI4 fold is detected and data communication is not performed.

That is, the terminal device 3 sends a calling request signal a to the network control device 5 at an arbitrary time (FIG. 2(a), tt
) The halt-am path 13 monitors the telephone line IO usage state, and if the telephone line 1 is not in use, after a predetermined period of time, the switch circuit 7 is switched from the signal line 21 to turn it off. Disconnect the telephone 2 from the telephone line 1 and prepare to prevent the bell ringing while the terminal is making a call (Fig. 2 (b) %t2
If L Telephone Bank I is in use, the call is given priority, so the call waits until the call ends.

If telephone 1g1llll is not in use, control signal C
The switch l path 14 is closed to close the DC loop ([Fig. 2 (C), 1j). A call acceptance signal d is sent to the terminal device 3 after a predetermined time after the DC loop is closed.
)tt4) (depending on the control eccentricity θ), the switch circuit 10
The data signal f from the terminal device 3 is connected to the automatic dialing circuit 11 by switching the signal line from the signal line n to the remote side (FIG. 2(f)-t4).

After sending the call acceptance signal d, the selected dial information I and the free money format information sent as serial data from the terminal device 3 via the data signal line 1B are automatically dialed @
II 11 receives (Fig. 2(f) tt5 and t,
,) After receiving the gold format information ■, press the switch g W
&io from the signal [123 side to the 22 side (Fig. 2(e)
), ti) and after a predetermined time after the DC loop is closed, the automatic dialing circuit U sends out a 9-dial signal corresponding to the selected dialing information IK. (Fig. 2(e), ty).

After sending the selected dial information @1, if there is no 'g & gender reversal and center response signal within a predetermined time in case of terminal billing format, or if there is no center response imbalance within a predetermined time in case of center billing format. In this case, if there is a polarity reversal, it means that there is an incorrect connection, so the switch circuit 14 is opened and the DC loop is opened. At the same time, the transmission of the call acceptance signal 4 to the terminal device 3 is stopped. After opening the DC loop further.

After the predetermined guaranteed recovery time of the exchange network has passed, the switch circuit 7 is connected to the signal line 21 III K, and the telephone 2 is connected to the telephone line IKm!
Continue to recover. After the terminal device 3#: stops outputting the call acceptance signal d, it stops sending out the call request signal 1 and restores it to its initial state.

On the other hand, after sending the selection dial information ■, the skill information 17bX
In the case of terminal billing format #i, line monitoring within a specified time - W
&13 detects a polarity reversal and when the automatic incoming network control circuit 8 receives a center response signal, it activates the automatic dialing circuit 11tj code transmission circuit 9 and sends a code transmission circuit 9#i response signal to prevent data overtransmission. Possible status is entered. In addition, if the 1-select dial information 1 is sent out in the vk1 billing billing format, the line monitoring circuit 13 does not detect a polarity reversal within a predetermined time, and the automatic incoming network control circuit 8
9 when the center response signal is received (automatic dialing circuit 1
1t; f Activates the code transmitting circuit 9, and the code transmitting circuit 9 sends out a response signal to enter the data communication enable state S (enters).

Along with this, the data signal line 18. Transmission and reception of data is started between the center side device and the terminal device fl13 via the terminal device fl13 (Fig. 2 (t>s t-). When the terminal device 3 stops sending the calling request signal a, the network side The @ device f5 opens the switch circuit 14 to open the DC loop, stops sending out the response signal, and stops leaving the calling acceptance signal d (Fig. 2(a)).
0) (d), 1. ). After the DC loop is opened and a predetermined guaranteed restoration time of the switching network has elapsed, the switch circuit 7 and the telephone 20 are restored and connected. (FIG. 2(b), tl. The X center side device performs a recovery operation by stopping the response signal.

The control operation based on the billing information stamp will be explained in more detail with reference to FIG.

FIG. 5 is a block diagram of the main parts of the nine control circuits provided in the automatic dialing circuit 11. Signal 11123 is connected to serial-parallel code conversion and decoder latch circuit 25.

The outputs m (terminal billing format) and n (center billing format) are respectively led to one input terminal of the gate circuit 26, d. Further, the output of the line monitoring circuit 13 is led to the other input terminals of the gate circuit 260 and to the inverting input terminal of the gate circuit η. The output of this gate circuit 26%n is led to one input terminal of gate circuits 4 and 4, respectively. The outputs of the automatic incoming network control circuit 8 are led to the other input terminals of this gate circuit, respectively. The four outputs of this gate circuit are respectively led to the input terminals of the OR circuit. The output of this OR@R is used as a control signal to the code transmitting circuit 9.

Now, the serial/parallel code conversion and decode/latch circuit receives the serial code billing information from the terminal device 3 through the signal line n, sums the serial code billing information in parallel code, and outputs two OII gold format signals m.
, nK decoded and temporarily stored.

These outputs are sent to line monitoring circuit 1 through gate circuits 26 and 27.
3 and the polarity state of the telephone line 1 is taken, and the polarity inversion signal is generated only when the terminal billing format output is m! Can be attached. In addition, automatic incoming network control is performed by the first and fourth gate circuits in the first stage.
A logic is taken with the center response signal reception information from route 8,
Finally, it is sent out as a control signal via the OR circuit, activating the code transmitting circuit 9, and entering a data communicable state. Furthermore, when the center response signal is received without polarity reversal due to the operation of the gate circuit when the output is in the center charging format n, the code transmitting circuit 9 is activated and the data communication enable state IINc is entered.

In the case of a circuit other than the above, the code transmitting circuit 9 is not activated, and the timing monitoring function of the automatic dialing circuit 11 determines that there is an erroneous connection (such as a time tick).

In the above embodiment, the billing format information is the data signal 1 of the terminal device 3! 18t, but other interface lines may be added, and furthermore, the automatic dialing circuit 11 may be directly input manually from a strap setting device or the like instead of from the terminal device 3.

As explained above, according to the present invention, when a subscriber telephone line intended for telephone calls is used for data communication, depending on the billing format information provided from the outside, the calling side (terminal) is charged 11 yen or the called side ( Center) lI money was decided to be changed. Therefore, it is possible to select a billing format depending on the purpose of data communication when making a call from a terminal, and the uses and services of a data collection device using a telephone line can be expanded.

For example, in a system that is not directly related to the subscriber who owns the telephone and gIm4, such as a malfunction of a vending machine, the called party (center) should use II money format), and in a system that is related to the subscriber, such as crime prevention, the calling party should (Terminal) It becomes possible to use the 1111#i format. Furthermore, if the center response signal cannot be received within a certain period of time due to only polar opposites when charging the calling party (terminal), there is a possibility of an erroneous connection, and the called party (terminal)
Although there is a possibility of an erroneous connection when a leveling rod is received at the same time as money, this can be detected and has the advantage of being able to prevent money from being stolen on the terminal side at an early stage.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts of an embodiment of the present invention. Figure WJ2 is an operation time chart showing inputs or outputs at the points marked with an x in Figure 1. $3 Diagram F1 A diagram showing one control path for billing information. ■...Telephone line, 2...Telephone, 3.4...Terminal device. 6... Network control device, 7.10.14... Switch circuit, 8... Automatic incoming network control circuit, 9... Code transmission circuit, 11... Automatic dialing circuit, 13... Episode I
M monitoring circuit, 15... off-hook detection circuit, 18.1
9...Tai-Buru, 21-23--Patent originating agent
Patent Attorney Naotaka Ide, ``Continued from Figure 1, Figure 2, Figure 3, Page 1 0 Inventor Takashi Nakagawara - Inside the Hino Factory of Tokyo Shibaura Electric Co., Ltd., 3-1-1 Asahigaoka, Hino City Author: Isamu Tsuruta, 3-1-1 Asahigaoka, Mikino City, Tokyo Shibaura Electric Co., Ltd., Hino Factory, Tokyo Shibaura Electric Co., Ltd., Hino Factory, 0 Author: Oyo Fukushige, Hino City, Asahigaoka, 3-1-1, Tokyo Shibaura Electric Co., Ltd., Hino Factory @Applicant: Japan Telegraph and Telephone Public Corporation ■Applicant: Tokyo Shibaura Electric Co., Ltd. 72 Horikawa-cho, Saiwai-ku, Kawasaki City

Claims (1)

[Claims] (1) The subscriber telephone line is distributed to the subscriber side of the subscriber telephone line. 1 is configured such that a telephone or a plurality of terminal devices can be connected to the terminal device, and in response to a call request from the terminal device, selective dialing information is sent to the subscriber telephone line to establish a connection with the center side device. With deeds! After the I-connection is completed, the network control device that controls data communication between the terminal device and the center takes in the amount information according to the information from the terminal device, and uses this billing information as terminal billing ( (caller charge) format, detects polarity reversal of the telephone line within a predetermined time after sending the selected dial information, receives a center response signal from the center side device, and then enters data communication state. control, and if the billing information is in the center billing (called party billing) format, no polarity reversal of the telephone line is detected within a predetermined time after sending the preferential dialing information, and a center response signal is sent from the center side device. What is claimed is: 1. A network control device comprising: a control means for receiving the data and controlling the network to enter a data communication state.