KR200304437Y1 - Apparatus for remote loop-back of repeater board in communication system - Google Patents

Abstract

The present invention is to provide a relay board remote loopback device of a communication system, MMC terminal unit for inputting a command to test to the power station; A bit error measuring unit connected to the MMC terminal to measure a bit error by receiving a loopback signal; When the command to test to the power station is input through the MMC terminal unit receives the bit error measured by the bit error measurement unit relay switch to set the remote loopback to the power station using unused bits to perform the remote loopback of the relay board By including the matching unit, the remote relay board automatically loops back using the unused bit on the relay line, so in case of suspected failure of the relay line of the local exchange, the test path can be easily set and then tested for abnormality. You can judge.

Description

{Apparatus for remote loop-back of repeater board in communication system}

The present invention relates to a relay board remote loopback device of a communication system. In particular, a test path can be easily set in case of suspected failure of a relay line of a local exchange by automatically remote looping back a counterpart relay board using unused bits on a relay line. The present invention relates to a relay board remote loopback device of a communication system that is suitable to determine whether an abnormality in a rear line is required by a test.

In general, a communication system is a system that performs information processing by combining a terminal with a remote communication line, and there are wired and wireless communication systems. The wireless communication system is a communication system for mobile devices such as people, cars, ships, trains and aircraft, including mobile phones (mobile phones, vehicle phones), port phones, aircraft phones, mobile public phones (trains, cruise ships, Installed on express buses, radio calls, radiotelephones, satellite communications, amateur radio, and fishing service ships.

These communication systems include the AMPS (Advanced Mobile Phone Service) system using analog methods, CDMA and TDMA (Time Division Multiple Access) systems using digital methods, and Frequency Division Multiple Access (FDMA) systems. System, Wireless Local Loop (WLL), CDMA2000-1x, IMT2000 system.

The exchange is a device that forms a communication path between telephone terminals, and is a local exchange that is installed in a telephone station to establish a connection between a public communication network and a general subscriber, and is installed by an enterprise, a group, or an individual, and performs connection between each subscriber terminal in the interior. It can be divided into private exchanges. ATM (Asynchronous Transfer Mode) exchangers are also used in systems such as mobile communication systems.

Therefore, in the existing national exchanges, the relay line maintenance personnel directly tested the test of the normality of the trunk line. In other words, the maintenance personnel of the exchanger requested the connection of the test path by wire communication with the partner station, and the path was connected and the normality of the relay line was tested through the connected path.

1 is a block diagram for relay board remote loopback of a conventional communication system.

Here, reference numeral 10 denotes a MMC (Man Machine Communication) terminal unit, and 20 is a bit connected to the MMC terminal unit 10 to receive a loopback signal and measure a bit error rate (BER). An error measuring unit, 30 is a switching center relay line matching unit that receives the bit error measured by the bit error measuring unit 20 is notified of the remote loopback result of the relay board and performs relay line matching with the power station, 40 is the switching station The relay line matching unit is connected to the relay line matching unit 30.

In addition, reference numeral 31 is a framer positioned in the switchboard relay line matching unit 30 to generate a relay related signal, and 41 is a framer located in the relay box matching line 40 in the switching center relay line matching section 30. It is a framer that performs transmission and reception of the framer 31 and relay related signals.

In the conventional apparatus configured as described above, when the maintenance personnel test the relay line, the route providing method is performed by mutual communication between the switching center relay line matching unit 30 and the power relay line matching unit 40.

Here, the framer 31 that performs the function of generating the relay-related signal with the switchboard relay line matching unit 30 is mainly produced by a device manufacturer and supplied to a user.

The power station relay line matching unit 40 connected to the switching center relay line matching unit 30 also has the same structure.

Therefore, when it is judged that the failure of a specific relay line is suspicious, and wants to proceed with the line test, as shown in the lower part of FIG. . When the maintenance personnel on the exchange side requested loopback from the maintenance personnel on the counter side, the maintenance personnel on the counter side informed the exchange side of the loopback setting and proceeded to set up and test the necessary test path.

That is, a maintenance agent located at the exchange station side transmits a relay-related signal to the framer 41 in the power station relay line matching unit 40 at the power station through the framer 31 in the switching center relay line matching unit 30 to request loopback. do.

Then, the maintenance personnel on the power station side performs the remote loopback setting on the framer 41 included in the power relay line matching unit 40 to receive the loopback request on the exchange station side.

For the loopback setting, it is possible to set a specific bit of the framer 41 in the power station matching line 40.

All framer devices currently produced by device manufacturers have built-in features that allow specific loops to be controlled and set as remote loopback. Therefore, the mode can be set by the user. The corresponding bit for setting to remote loopback may be different according to the type of framer.

In this way, if the loopback is set, the test is performed through the bit error measuring unit 20, and the presence or absence of an abnormality of the relay line is determined according to the test result.

In addition, the measurement is performed by receiving the input of the MMC terminal unit 10.

The bit error measuring unit 20 is a function basically provided by the switching center, and typically provides a test path to the relay line matching unit 30 of the switching center.

However, in the conventional technology, when the test is required, the test path cannot be provided to the large country, and there is an inconvenience that the maintenance personnel must directly connect the path.

Therefore, the present invention is proposed to solve the conventional problems as described above, and the object of the present invention is to suspect that the relay line of the exchange is broken by automatically remote looping back the counterpart relay board using unused bits on the relay line. In this case, the present invention provides a relay board remote loopback device of a communication system that can easily establish a test path and determine whether there is a problem with a test through a test.

Relay board remote loopback device of the communication system according to an embodiment of the present invention to achieve the above object,

An MMC terminal unit for inputting a command to be tested to a power station; A bit error measuring unit connected to the MMC terminal to measure a bit error by receiving a loopback signal; When the command to test to the power station is input through the MMC terminal unit receives the bit error measured by the bit error measurement unit relay switch to set the remote loopback to the power station using unused bits to perform the remote loopback of the relay board It is characterized in that the technical configuration is made to include a matching portion.

1 is a block diagram for a relay board remote loopback of a conventional communication system,

Figure 2 is a block diagram of a relay board remote loopback device of the communication system according to the present invention,

3 is a structural diagram showing a structure of a frame and a time slot on a relay line used in the present invention.

Explanation of symbols on the main parts of the drawings

10: MMC terminal 20: bit error measurement unit

30 switching center relay line matching unit 31 framer

40: match relay line 41: framer

Hereinafter, an embodiment according to the present invention, a technical concept of a relay board remote loopback device of a communication system will be described with reference to the accompanying drawings.

Figure 2 is a block diagram of a relay board remote loopback device of the communication system according to the present invention.

As shown therein, the MMC terminal unit 10 for inputting a command to be tested up to a power station; A bit error measuring unit 20 connected to the MMC terminal unit 10 and receiving a loopback signal to measure a bit error; When the command to test to the large station is input through the MMC terminal unit 10, the bit error measured by the bit error measuring unit 20 is received, and the remote loopback is set to the large station by using the unused bit. And a switching center relay line matching section 30 for performing the loopback.

Here, reference numeral 31 denotes a framer that is located in the switching center relay line matching unit 30 and generates a relay related signal, 40 denotes a large relay line matching unit connected to the switching center relay line matching unit 30, and 41 denotes the large station. It is a framer which is located in the relay line matching unit 40 and transmits / receives a relay related signal with the framer 31 in the switching center relay line matching unit 30.

In the above, the switching center relay line matching section 30 sets the remote loopback to the large station using bits 4 to 8 of TS0 of the frame without frame synchronization.

In the above, the switching center relay line matching unit 30 sets bits 4 to 8 of TS0 of the frame without frame synchronization to 10101 to transmit to the large station.

In the above, the switching center relay line matching section 30 sets the unused bits of TS16 / FR0 to 1Y10 and transmits them simultaneously.

The operation of the relay board remote loopback device of the communication system according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, the present invention aims to determine the abnormality of the line after easily setting the test path by automatically remote looping back the counterpart relay board using the unused bit on the relay line.

So, the basic configuration of the present invention is similar to the conventional one, but as shown in Figure 2 without a mutual consultation procedure between the maintenance personnel, if only the test command is input through the MMC terminal unit 10, a big difference in that the test from the switching center to the big station There is.

Therefore, when a command to be tested to the station is input by the MMC terminal unit 10, the framer 31 in the switching center relay line matching unit 30 sets the remote loopback to the station using unused bits.

In this case, the unused bit uses an unused spare or N bits of TS0 as in the frame and time slot (TS) structure on the relay line in FIG. 3.

3 is a structural diagram showing a structure of a frame and a time slot on a relay line used in the present invention. This is an example of the Conference of European Administrations of Posts and Telecommunication (CEPT), a European relay method used mainly in Korea.

So <a. 1 multi-frame structure> shows that 16 frames on the relay line of the CEPT method are composed, and each frame is represented by <b. 1 frame structure> is composed of 32 timeslots (TS).

In addition, TS0 of each frame is <c. As shown in TS0 structure>, it can be seen that a frame including a frame synchronization signal and a frame not including each frame perform different functions. Here, the frame with frame sync is equal to 0, 2, 4, 6, 8, etc., and the frame without frame sync is equal to 1, 3, 5, 7, and so on.

TS16 of each frame FR0 to FR15 is <d. TS16 structure> is the same as that of the line monitoring signal for the voice channels in parentheses.

Accordingly, the present invention adjusts and transmits the N bits shown in TS0 of the frame without a frame sync signal and the bits not used as a spare in TS16 of frame 0. Then, by extracting these values from the power station, it is possible to perform the remote loopback setting in the framer 41 in the power relay line matching unit 40.

Referring to the operation of the present invention in more detail as follows.

First, the present invention intends to easily remote loop back a relay line matching device of a large power station by using unused bits on a relay line.

Thus, when the remote loopback command is issued to the framer 31 in the switchboard relay line matching unit 30 through the MMC terminal unit 10 of FIG. 2, the <c. Bits 0 to 8 of TS0 of the frame without frame synchronization in TS0 structure> are set to 10101 and transmitted to the power station.

Then, the frame on the relay line is continuously transmitted in 125uS period, and the large station continuously receives the contents of TS0 as 10101.

In a large station, the contents of TS0 of each frame are referred to as <a. When more than one multi-frame is received, such as 1 multi-frame structure>, the tester 41 is remotely looped back to the framer 41 in the power relay matcher 40 to provide a test path.

In addition, even in a normal line state of FIG. In order to prevent the case where the reception content of TS0 of the frame without frame synchronization is set to 10101 intended in the present invention in TS0 structure>, it is as follows. That is, <d. In TS16 structure>, make X bit (preliminary bit), unused bit of TS16 / FR0, out of TS16 structure as 1Y10 and transmit simultaneously. In this case, since 1Y10 is a variable value, 1Y10 has a value of 1010 or 1110. Therefore, by making the X bit 1010 or 1110 and transmitting the same, it is possible to prevent the case where the reception content of TS0 of the frame without frame synchronization is set to 10101 on a normal line.

As such, the present design automatically remote loops back the other relay board using unused bits on the relay line, and if it is suspected that the relay line of the exchange is suspected, the test path can be easily set and then the test is performed to determine the abnormality of the line. will be.

While the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Therefore, the above description does not limit the scope of the present invention as defined by the limitations of the following claims.

As described above, the relay board remote loopback device of the communication system according to the present invention can automatically test the relay board by remote loopback using the unused bits on the relay line, so that the test route can be easily tested if it is suspected that the relay line of the national exchange is broken. After setting the test, it is effective to determine the abnormality of the track through a test.

In addition, the present invention can be maintained by providing a test path in a simple way to easily test the problems on the relay line, there is also an advantage that can be checked without additional equipment, the maintenance cost is almost no cost.

Claims (4)

An MMC terminal unit for inputting a command to be tested to a power station; A bit error measuring unit connected to the MMC terminal to measure a bit error by receiving a loopback signal; When the command to test to the power station is input through the MMC terminal unit receives the bit error measured by the bit error measurement unit relay switch to set the remote loopback to the power station using unused bits to perform the remote loopback of the relay board Relay board remote loopback device of a communication system comprising a matching unit. According to claim 1, wherein the switching center relay line matching unit, A relay board remote loopback apparatus of a communication system, characterized in that the remote loopback is set to a power station using bits 4 to 8 of TS0 of a frame without frame synchronization. 3. The relay line matching line unit according to claim 2, A relay board remote loopback device of a communication system, characterized in that bits 4 to 8 of TS0 of a frame without frame synchronization are set to 10101 to be transmitted to a power station. According to claim 3, wherein the switching center relay line matching unit, A relay board remote loopback device for a communication system, characterized by transmitting unused bits of TS16 / FR0 to 1Y10 at the same time.