KR960007579B1 - Leased line communications apparatus - Google Patents

Abstract

a main controller 4 installed between an exchange 1 and a mother equipment 2, and a remote measurement apparatus 5 installed between a subscriber's equipment 3 and a subscriber, where the main controller 4 has a monitoring switch 6 having functions of sending and restoring a busy tone to the exchange 1, sending a ring signal to the mother equipment 2, after sensing a hook-off; a modulator/demodulator 7 for receiving/sending data and a carrier to the remote measurement apparatus 5 of the subscriber's equipment 3; and a controller 8 for controlling the modem control, receiving and transmitting of command and data, outputting of message, interfacing with a monitor, and controlling a monitoring switch.

Description

Dedicated line securing device and communication method using general subscriber channel

1 is a block diagram of a conventional communication system.

2 is a block diagram of a communication system of the present invention.

3 is a block diagram of the main controller of the present invention.

4 is a block diagram of a telemetry device of the present invention.

5 is a timing diagram showing a normal ring signal and a data path ring signal.

6 is a flow chart of the communication channel in the main controller.

7 is a flow chart of the communication path in the telemetry device.

* Explanation of symbols for main parts of the drawings

1: exchanger 2: motherland equipment

3: own station equipment 4: main controller

5: remote measuring device 6, 10: monitoring switch

7, 11: modulator 8: control device

9 monitor 12 measurement and control device

13: matrix

The present invention is to configure the unmanned remote meter reading system by installing a dedicated line securing device using a general subscriber channel to the radio transmission and reception equipment of island province without data dedicated line, to perform the centralized operation maintenance work of the communication equipment without data dedicated line The present invention relates to a dedicated line securing apparatus using a general subscriber channel and a communication method thereof.

In general, among the currently operating communication systems, radio transmission and reception equipment in islands without data-only lines has a complicated tree structure, and thus, there is no systematic operation of power or maintenance of the equipment. In particular, communication systems without data-only lines are aimed at small subscribers of domestic telecommunication equipment, which are widely dispersed in use, and more than 30 percent of them are not always powered. There are problems related to maintenance of subscriber lines due to deterioration of facilities.

Therefore, by using the present invention which has developed a device for securing a data dedicated line using a general subscriber channel in a communication system without a data dedicated line and developing a centralized operation preservation function, the necessary data of each local communication equipment can be obtained. The above-described prior art can be effectively performed by configuring the unmanned remote meter reading system independently of the equipment for the transceiver which can perform the centralized maintenance work for the target and other data dedicated line functions. The purpose is to eliminate the problem.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a block diagram of a conventional communication system, which communicates with a main station equipment 2 of a relay station at an on-site switch 1, and has no data dedicated line through an antenna of the main station equipment 2; When communication is transmitted to the antenna of the own station equipment (3) of the subscriber station via the subscriber line connected to the own equipment (3) is made of a structure that is performed.

Since the communication system shown in FIG. 1 does not have a dedicated data line, the home station equipment cannot collect the state and related information of the own station equipment 3 located at a remote location with the configuration of the above communication system. It is very difficult to carry out intensive operational preservation functions such as monitoring and measurement in the home country.

2 is a diagram showing the configuration of the communication system of the present invention, by adding a main control unit 4 to the existing mother station equipment (2), and by adding a telemetry device (5) to the own station equipment (3). 3) It is configured to have the concentrated operation preservation functions such as collection, analysis and prevention of related information.

FIG. 3 shows the configuration of the main controller 4 of FIG. 2 in detail, and the operation thereof will be described with reference to the communication channel configuration flowchart of the main controller 4 shown in FIG.

First, according to the start signal of step 101, if a line to be used as a data-only line of the general subscriber channel is captured in step 102, it is searched whether the general subscriber is busy on the line selected in step 103, and then the call If it is busy, the process returns to the track acquisition step 102, and if the track is not in use by the general subscriber, the data path ring signal shown in FIG. 5 (b) is connected to the local equipment in step 104. Waiting at step 150 for a hook-off to be sent to send to (5) to know whether data transmission and reception is possible from the telemetry apparatus 5, and if the hook-off is received, step In step 106, the communication function for centralized operation preservation is started, and if the hook-off is not received, the process returns to step 104 and the data path ring signal shown in FIG. Send to

When the communication for the centralized operation preservation function is terminated in step 107, the operation of the main control unit 4 in step 109 after restoring the line used for data transmission and reception to the multiple general subscriber lines in step 108 To exit.

If the communication is not terminated in the step 107, the process returns to the step 106 to continue the communication function.

In the operation of the main controller 4, the busy tone transmission and recovery function to the exchanger 1 side, the ring signal transmission function to the mother station equipment 2, and the ring signal transmission interruption function are detected after hook-off detection. It is the monitoring station 6 of the mother station, and the demodulator 7 of the mother station is transmitting and receiving data and carrier, and controlling the modem control, command and data transmission, message output, interface with the monitor and the monitoring switch. It is the control device 8, and the data transmitted to the home station equipment 2 can be checked through the monitor 9.

4 is a diagram showing the configuration of the telemetry device 5 of the present invention shown in FIG. 2, the operation of which will be described with reference to the communication channel configuration diagram of the telemetry device 5 shown in FIG. Let's do it.

First, the start signal is received in step 201 shown in FIG. 7 and the telemetry device 5 installed in the local station equipment 3 captures a line for data transmission and reception. In step 203, the ring signal is received. If the signal is the normal ring signal shown in Fig. 5 (a) transmitted from the exchange, the process proceeds to step 205 to connect the line to the general subscriber, while the first transmission from the main controller In step 207, a hook-off indicating whether data can be transmitted or received when the data path ring signal of FIG.

In step 207, the hook-off is transmitted to the main control unit of the home country equipment. After waiting for a while in step 208, the commands transmitted from the main control unit are processed, and the operation is terminated in step 209. When the operation is in progress, the operation is processed again in step 208, and the operation is terminated in step 210, the operation of the telemetry device 5 by restoring the communication line to the general subscriber line in step 211. Finish at

If the ring signal received in step 206 is not a data path ring signal transmitted from the main controller connected to the mother equipment, the process proceeds directly to step 210 and recovers the communication line, and then operates in step 211. To exit.

In the operation of the telemetry apparatus, the busy subscriber station has a busy tone transmission and recovery function, a ring signal detection function, a hook-off function, a ring signal transmission and a hook-off detection function to the home station equipment. And the ring demodulator 11 having the ring signal detection, the hook-off function, and the data transmission / reception function. It is the measurement and control device 12 that has the function of capturing and restoring the function and determining the measured value.

5 is a timing diagram showing a normal ring signal and a data path ring signal. In order to secure a general subscriber line as a data dedicated line, a communication line is connected to a general subscriber or a data dedicated line by distinguishing between normal subscriber calls and data transmission operations. In order to use it, it transmits the normal ring signal of Fig. 5 (a) which rings for 1 second and stops for 2 seconds in normal subscriber call, and stops for 2 seconds after sending and receiving data for 1 second or more (for example, 2 seconds). The data path ring signal of 5 degrees (b) is transmitted from the home station equipment to the own station equipment.

When the dedicated line securing device using the general subscriber channel is installed and operated in the existing communication equipment as in the communication equipment of the present invention described with reference to FIGS. 2 to 7, an unmanned remote meter reading system is used for the communication equipment without the data dedicated circuit function. It can be configured to effectively take the data of the items to be monitored at the remote site to perform centralized operation maintenance work.

Claims (6)

It is to secure the data dedicated line by using the general subscriber channel between the mother station equipment and the own station equipment that does not have the data dedicated line, and the main controller (4) installed between the exchanger (1) and the mother station equipment (2), and the domestic equipment (3). And a telemetry device (5) installed between the subscriber and the subscriber line securing apparatus using a general subscriber channel. The main control unit according to claim 1, wherein the main controller has a busy tone transmission and recovery function to the exchanger 1, a ring signal transmission function to the mother station equipment 2, and a ring signal transmission stop function after detecting a hook-off. With a monitoring switch 6 to perform, a modulator 7 for transmitting and receiving data and a carrier to and from the telemetry device 5 of the local station equipment 3, modem control, command and data transmission and reception, message output and a monitor. And a control device (8) for controlling an interface and a monitoring switch. 2. The telemetry apparatus (5) according to claim 1, wherein the telemetry device (5) transmits and recovers busy tone through a matrix (13) to a general subscriber, a ring signal detection function, a hook-off function to a mother station equipment, and a ring. A monitoring switch 10 having a signal transmission and hook-off detection function, a demodulator 11 having a ring signal detection, a hook-off function and a data transmission / reception function transmitted from a mother station equipment, modem control and command reception, Dedicated line securing device using a general subscriber channel comprising a data transmission line and a power supply measurement function, a measurement line, a measurement and control device 12 having a function of capturing and restoring a data line and determining a measurement value . 4. A method according to claim 2 or 3, wherein a ring signal is distinguished from a normal ring signal sent out from the exchanger 1 in order to form a data path between the main controller 4 and the telemetry device 5. Device for securing a dedicated line using a general subscriber channel in the communication equipment characterized in that the. A communication method in a main control unit for securing a data leased line using a general subscriber channel between a mother station device and a home station device having no data leased line, the method comprising: capturing a line to be used as a leased line among general subscriber channels according to a start signal; 102, searching 103 if the general subscriber is busy on the captured line; in step 103, if the call is busy, returns to step 102; The step 104 of transmitting to the remote measuring device 5 connected to the own station equipment and the ring signal transmitted in the step 104 can be used to determine whether data transmission and reception is possible from the telemetry device 5. Wait 105 for the hook-off to be sent; if no hook-off is received, return to step 104 to transmit the data path ring signal to the telemetry device 5, and the hook-off When received Initiating a communication function for control 106 and returning to step 106 if the communication is not terminated in step 106, and restoring the used line to the general subscriber line when the communication ends. And a step (109) of terminating the operation in the main control unit (4). A communication method in a telemetry apparatus for securing a data leased line using a general subscriber channel between a home station device and a home station device having no data leased line, and when a start signal is transmitted, a line to be used as a leased line is captured among the subscriber channels. Step 202 and, after the line is determined in step 202, detects whether a ring signal is transmitted from the mother equipment and proceeds to the next step if a ring signal is detected. Step 203 of returning to the line acquisition step 202 and whether the ring signal sensed in the step 203 is a signal from the exchange 1 are performed. After connecting to the general subscriber, the operation sequence is returned to the line acquisition step 202, and if it is not a signal transmitted from the switch 1, it continues to the next step. Step 204, if the signal transmitted in the step 204 is a data passing signal transmitted from the main controller 4, proceed to the next step, if not the signal transmitted from the main controller 4, communication line recovery step Step 206 to end the operation through the step, and transmitting the hook-off to the main controller 4 by detecting the ring signal transmitted in the step 206 (207), and the step (207) In step 208, if the hook-off is transmitted, the processor waits for a while and processes the command transmitted from the main controller 4, and determines whether the operation of step 208 is completed. Proceed to step 209 to proceed to the instruction processing step 208 to continue the operation if the operation is not completed, and recovering the communication line when the operation is confirmed in step 209 above (210) And recover the communication line in step 210 above. And a step (211) of finishing the operation in the telemetry device (5).