JPH0771348B2 - Communication control device - Google Patents

Description

TECHNICAL FIELD The present invention is used in a management system such as LPG, and reports emergency information such as gas leaks in each home to a center via a telephone line, or from the center side to the center. The present invention relates to a communication control device capable of performing a shutoff, a meter reading value request, and the like, and bidirectional control.

2. Description of the Related Art Conventionally, this type of communication control device temporarily stores the notification data sent from each home terminal using a telephone line in a buffer memory, disconnects the line with the terminal, and then stores it in the buffer memory. The stored report data was transmitted to the host computer, or was transferred to the host computer under command control of the host computer.

However, the above-described conventional communication control device has a problem that the host computer cannot perform the no ringing control in which the host computer communicates with the terminal in real time.

The present invention solves such a conventional problem, and can perform no ringing control such as center shutoff and meter reading value request for a terminal in real time by operating a host computer, and a terminal using another line. An object of the present invention is to provide a communication control device capable of receiving outgoing notification data.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention controls a plurality of incoming calls through a telephone line from a plurality of terminals at the time of occurrence of emergency information such as gas leak in each home, and reports a call originating from the terminal. Incoming line control means for receiving data, no ringing line control means for automatically dialing to the no ringing line or terminal set for transmission, and performing no ringing control such as center cutoff and meter reading value request, and the above incoming line control Storage means for buffering the notification data received by the means, interface means with the host computer, no-ringing control of the host computer, and incoming call from the terminal to the incoming line control means. Be able to receive individually or both at the same time A call processing control means for selectively controlling each of the above means is provided.

Therefore, according to the present invention, the call processing control means controls the no-ringing line control means by command control from the host computer through the interface means, and the no-ringing line control means is set in advance for no-ringing. No dialing control is performed by automatically dialing from the line, and the call processing control means transfers the response data from the terminal to the host computer under the control of the interface means. On the other hand, when the incoming line control means detects an incoming call from another terminal using another line, the call processing control means controls the incoming line control means based on the detected information to cause the terminal originated notification data to be received and no ringing. If it is under control, the call data is buffered in the storage means, and after the no ringing control, the host computer executes command control via the interface means so that the call processing control means stores the buffered notification data in the storage means. The interface data is transferred to the host computer, and if the no-ringing control is not being performed, the notification data is transferred to the host computer under the control of the interface device.

Examples Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram of essential parts showing a communication control device in an embodiment of the present invention.

In FIG. 1, reference numerals 1a and 1b denote incoming line control means, which control incoming calls from the terminal and receive notification data from the terminal when there is an incoming call. Reference numeral 2 is a no-ringing line control means, which performs automatic dial transmission, performs no-ringing control such as center shutoff and meter reading value request. A storage unit 3 buffers the report data from the terminals received by the incoming line control units 1a and 1b. 4 is an interface (I / I) with the host computer 30 (see FIG. 2).
F) means 5 is a call processing control means, which is connected to the incoming line control means 1a and 1b and the no ringing line control means 2 by the data bus 6, connected to the storage means 3 by the address bus and the data bus 7, and the interface means. 4 and a data bus 8 for controlling each means 1a, 1b, 2, 3, 4.
That is, while controlling the no-ringing line control means 2 under the control of the host computer 30, the interface means 4 is controlled so as to transfer the response data from the terminal to the host computer 30, and the reception line control means 1a, 1b receives the data. If the no-ringing control is being performed, the notification data is controlled to be buffered in the storage means 3, and if the no-ringing control is not being performed, the interface means 4 is controlled to transfer the notification data to the host computer 30. The interface means 4 is used to transfer the notification data buffered in the storage means 3 to the host computer 30 under the control of 30.
To control.

FIG. 2 is a circuit configuration diagram of the above embodiment.

As shown in FIG. 2, the microcomputer, which is the incoming line control means 1a and 1b, comprises a control unit 11 and an input / output unit 12, and the input / output unit 12 is connected to the NCU (Netwo) by buses 13 and 14, respectively.
rk Control Unit) 15, which is connected to an LED (light emitting diode) 16. The microcomputer which is the no-ringing line control means 2 comprises a no-ringing line control unit 17 and an input / output unit 18, and is connected to the NCU 22, the no-ringing circuit 23, and the LED 24 by buses 19, 20 and 21. The microcomputer which is the call processing control means 5 is composed of a call processing control unit 25, an interface control unit 26, a memory control unit 27 and an input / output unit 28. The input / output unit 28 is connected to the microcomputer 1a via the data bus 6. RS-23 which is connected to the input / output units 11, 11 and 18 of 1b and 2 and is connected to the memory which is the storage means 3 through the address bus and the data bus 7 and which is the interface means 4 through the data bus 8.
Connected to 2C interface. 29a, 28b, and 29c are office lines (L ₁ , L ₂ ) and are connected to this device on the center side. 30 is a host computer, which is the RS-23
It is connected to the 2C interface 4 via an RS-232C cable 31. Reference numeral 32 is a power supply for this device.

The operation of the above configuration will be described below.

First, the no-ringing line control operation will be described with reference to the flowchart shown in FIG.

RS-232C interface (interface means) 4 is RS
When a no ringing command is received from the host computer 30 via the −232C cable 31, (step 4
1) The data is sent to the input / output unit 28 of the microcomputer (call processing control means) 5 via the data bus 8. Based on this, the call processing control unit 25 of the microcomputer 5 is an input / output unit.
The no-ringing information is sent from 28 to the input / output unit 18 of the microcomputer (no-ringing line control means) 2 via the data bus 6 (step 42). Based on this, the no-ringing line controller 17 of the microcomputer 2
Controls the NCU 19 via the bus 19 to capture any of the central office lines 29a to 29c and cause automatic dialing, and at the same time, turns on the LED 24 via the bus 21, and thereafter, via the bus 20, the no-ringing circuit 23. To control no ringing with the terminal (step 42). Here, when the terminal receives, no-ringing communication is started, the microcomputer 2 receives the response data from the terminal at the input / output unit 18, and the input / output of the microcomputer (call processing control means) 5 via the data bus 6. It is sent to the unit 28 (step 44). The interface control unit 26 of the microcomputer 5 sends the response data from the input / output unit 28 to the RS-23 via the data bus 8.
Transfer to 2C interface 4, (step 45), RS-23
The 2C interface 4 transfers the response data to the host computer 30 via the RS-232C cable 31 (step
46).

Next, the incoming line control operation will be described with reference to the flowchart shown in FIG.

The NCU 15 indicates the incoming state from the terminal via the data bus 13 to the microcomputer (incoming line control means) 1a, or
When it is sent to the input / output unit 11 of 1b, the control unit 12 detects this (step 51), and the input / output unit of the microcomputer (call processing control means) 5 from the input / output unit 11 via the data bus 6.
Transfer to 28 (step 52). Microcomputer 5
When the call processing control unit 25 of obtains the information from the input / output unit 28,
Information for immediately capturing the line is sent from the input / output unit 28 via the data bus 6 to the line side microcomputer 1a, or
It is sent to the input / output unit 12 of 1b. Based on this, the line control unit 11
Sends a signal from the input / output unit 12 via the bus 14 to turn on the line capturing LED 16 and capture the line by the NCU 15 via the bus 13. Accordingly, the line control unit 11 receives the notification data from the terminal via the NCU 15, the bus 13 and the input / output unit 12, and sends this notification data to the input / output unit 28 of the microcomputer 5 via the data bus 6. The call processing control unit 25 of the microcomputer 5 obtains the information, and if there is no ringing communication as described above (step 5).
3), memory controller 27 to address bus, data bus 7
The notification data from the terminal is buffered in the designated address of the memory 3 via the (steps 54, 55). And
RS-232C interface (interface means) 4 is RS
When a command is received from the host computer 30 via the −232C cable 31, the command is sent to the input / output unit 28 of the microcomputer 5 via the data bus 8. Based on this, the memory control unit 27 of the microcomputer 5 reads out the notification data from the terminal buffered in the memory 3 via the address bus and the data bus 7, and the RS- via the data bus 8 from the input / output unit 28. The 232C interface 4 is controlled and transferred to the host computer 30 via the RS-232C cable 31 (step 57). On the other hand, as described above, when the call processing control unit 25 of the microcomputer 5 receives the notification data from the terminal and is not in the non-ringing communication (step 53), the interface control unit 26 sends RS- via the data bus 8. The 232C interface 4 is controlled (step 56), and the report data from the terminal is transferred to the host computer 30 via the RS-232C cable 31 (step 56).
57).

As described above, according to this embodiment, the call processing control means controls the no-ringing line control means by command control from the host computer through the interface means, and the no-ringing line control means is set in advance for transmission. No ringing control is performed by automatically dialing from the existing no ringing line, and the call processing control means transfers the response data from the terminal to the host computer under the control of the interface means. On the other hand, when the incoming line control means detects an incoming call from another terminal by using another line, the call processing control means controls the incoming line control means based on the detection information to cause the terminal originated notification data to be received and no ringing. If it is under control, the call data is buffered in the storage means, the command processing is performed from the host computer through the interface means after the no-ringing control, and the call processing control means stores the notification data buffered in the storage means. Transfer to the host computer under the control of the interface means,
If no ringing control is in progress, the report data is transferred to the host computer under the control of the interface means. Therefore, by operating the host computer, the centering of the terminal, the no-ringing control such as a request for the meter reading value, etc. can be performed in real time, and the notification data of the terminal originating from another line can be received.

EFFECTS OF THE INVENTION As is apparent from the above-described embodiments, the present invention allows one communication control device to connect to a plurality of terminals and simultaneously perform both no-ringing communication and reception of notification data transmitted from the terminals, while the host Since it is possible to connect to the computer with only one port, there is an effect that one device can efficiently perform communication control.

[Brief description of drawings]

1 and 2 show a communication control device according to an embodiment of the present invention. FIG. 1 is a schematic block diagram of essential parts, FIG. 2 is a circuit configuration diagram thereof, and FIG. FIG. 3B is a flowchart for explaining the no-ringing line control operation according to the example, and FIG. 3B is a flowchart for explaining the incoming line control operation according to the above embodiment. 1a, 1b ... incoming line control means (microcomputer), 2 ... no ringing line control means (microcomputer), 3 ... storage means, 4 ... interface means (RS-232C interface), 5 ... call processing control Means (microcomputer).

Claims (1)

[Claims] 1. Incoming line control means for controlling a plurality of incoming calls from a plurality of terminals through telephone lines when gas emergency such as gas leak occurs in each home, and setting for outgoing calls, and receiving line control means. No-ringing line control means for performing automatic dialing from the existing no-ringing line to the terminal, no-ringing control such as center cutoff, meter reading value request, etc., and storage means for buffering the notification data received by the incoming line control means, When receiving an incoming call from the terminal to the interface means with the host computer, the no ringing control of the host computer and the incoming line control means, it is possible to perform the no ringing communication and the reception of the notification data of the terminal origin, or both at the same time. Call processing control means for selectively controlling each of the above means, Communication control device provided.