KR100851653B1 - Apparatus and method for call path testing in circuit switch network - Google Patents

Abstract

The present invention relates to a device for checking a call path in a public telephone network and a method thereof. The present invention relates to a microcontroller for generating a test pattern for checking a call path, and to receiving a test pattern generated from the microcontroller to determine a channel of a designated sub highway. A test pattern transmitter configured to transmit the test pattern, a SHW interface unit configured to receive a test pattern and a device-end voice signal transmitted from the test pattern transmitter, and transmit test pattern data, and test pattern information generated from the microcontroller. And a bit controller section for controlling the transmission side SHW interface section so that the test pattern data is transmitted in the designated bit.

Description

Apparatus and method for checking call path in public telephone network {APPARATUS AND METHOD FOR CALL PATH TESTING IN CIRCUIT SWITCH NETWORK}

1 is a diagram illustrating a test path when checking a call path in a general public telephone network.

2 is a diagram showing the configuration of a call path checking apparatus in a public telephone network according to the present invention;

3 is a diagram illustrating a method for checking a call path in a public telephone network according to the present invention.

Explanation of symbols on the main parts of the drawings

100: PP interface 200: microcontroller

300: test pattern transmission unit 400: bit controller

500: Tx SHW interface 600: Rx SHW interface

700: test pattern receiver

The present invention relates to an apparatus and method for checking a call in a public telephone network.

Conventionally, the circuit switching network has a function of checking only a specific path of a specific SHW (Sub HihgWay) when checking a path to a path, and can not check a path as a whole call, thereby causing chip damage or other cables. In case of problems due to poor cabling, there were difficulties.

That is, the conventionally implemented method is implemented so that only channel 0 is looped when looping at the corresponding device stage. In this method, the test result cannot be satisfied 100% only by checking the PATH with only the specific channel of the device and cannot test all channels in the TDM (Time Devisin Multiplexing) network. Also, there was a problem in that a waste of switching resources occurred because the channel could not be used during the test.

Accordingly, an object of the present invention is to solve the above problems, in the public telephone network that can be tested in all channels of the call, and the channel in the call can also check the route within the range that does not interfere with the call The present invention provides an apparatus and method for checking a passage.

According to an aspect of the apparatus for checking a call path in a public telephone network according to the present invention for achieving the above object, a microcontroller unit for generating a test pattern for checking the call path, and receives a test pattern generated from the microcontroller A test pattern transmitter for transmitting through a channel of a designated sub highway, a SHW interface unit for receiving a test pattern and a device-side voice signal transmitted from the test pattern transmitter, and transmitting test pattern data; And a bit controller unit controlling the transmitting-side SHW interface unit to transmit the test pattern data to a designated bit according to the test pattern information generated from the controller.

In particular, the test pattern transmission unit simultaneously processes a plurality of channels using a high-speed DSP to transmit and receive test pattern data in real time.

In addition, the SHW interface unit transmits the audio signal and the test pattern data to the designated bits according to the bit information under the control of the bit controller unit. At this time, the test pattern data is inserted into the designated bit according to the bit information and the voice signal is inserted into the unspecified bit to transmit the test pattern data.

Here, the test pattern data is Bit 7 ~ Bit 7 of the Bit 0 ~ Bit 7 of the PCM signal method, the polarity (Sign Bit) information, Bit 6 ~ Bit 0 represents the strength of the voice signal, the test pattern is Bit 0 with little speech distortion Or it is inserted in the area of Bit 1.

In addition, the SHW interface unit inserts a test pattern at regular intervals and transmits test pattern data when all bits are designated as test bits according to the bit information.

Meanwhile, according to an aspect of a method for checking a call path in a public telephone network according to the present invention for achieving the above object, a process of generating a test pattern for checking a call path, and receiving the generated test pattern, the designated sub Transmitting through a channel of a highway, and receiving the transmitted test pattern and the device-side voice signal and transmitting test pattern data with specified bits according to the generated test pattern information. It is done.

In addition, according to an aspect of the method for checking the call path in the public telephone network according to the present invention for achieving the above object, the process of generating a test pattern for checking the call path, and receiving the generated test pattern designated sub Transmitting through a channel of a highway, receiving the transmitted test pattern and the device-end voice signal, inserting a test pattern into a designated bit according to the generated test pattern information, and inserting a voice signal into an unspecified bit. And transmitting a test pattern data.

In addition, according to an aspect of the call path check method in the public telephone network according to the present invention for achieving the above object, in the call path check method in the public telephone network, the process of generating a test pattern for the call path check and And receiving the generated test pattern and transmitting the received test pattern through a channel of a designated subhighway, receiving the transmitted test pattern and the device-side voice signal, and testing all bits according to the generated test pattern information. If a bit is specified, the method includes inserting a test pattern at a predetermined period and transmitting the test pattern data.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, detailed descriptions of preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

FIG. 1 is a diagram illustrating a test path when checking a call path in a general public telephone network.

As shown in FIG. 1, the TEST Pattern transmission path is largely divided into its own Loop Back test path and a tab block Loop Back test path through the S-Switch.

First, referring to the self loop back test in detail, when a TEST pattern is generated and transmitted (Tx) by the test apparatus 10 as a call, the Tx Data transmission path is a device board through the T-Switch 20. Is transmitted to the device 30, and the Rx Data transmission path from the device board 30 is received from the test apparatus 10 through the T-Switch 20 in the communication path (① → T-Switch ①). -1 → Device Board → ②-1 → T-Switch → ②).

On the other hand, when looking at the Tablo Loop Back test in detail, when the TEST Pattern is generated by the test apparatus 10 as a call and transmitted (Tx), the Tx Data transmission path is T-Switch 20 and S-Switch (40). ) And the T-Switch 50 to the Device Board 60, and the Rx Data transmission path from the Device Board 60 is transmitted to the T-Switch 50 and the S-Switch ( 40) and the T-Switch 20 is received by the test apparatus 10 through a call (③ → T-Switch → ③-1 → S-Switch → ③-2 → T-Switch → ③-3 → Device → ④-1 → T-Switch → ④-2 → S-Switch → ④-3 → T-Switch → ④ → Call Tester).

As such, the path check of the existing path cannot test the corresponding channel during the call, but the test pattern test apparatus of FIG. 2 according to the present invention uses only Bit 0,1 during the call to interfere with the call. The test can be performed within the scope not given, and in particular, the Bit Control section has been implemented to test all the bits or to select the bits.

2 is a diagram showing the configuration of an apparatus for checking a call path in a public telephone network according to the present invention.

As shown in FIG. 2, the apparatus for testing a call path according to the present invention includes a PP interface 100, a microcontroller 200, a test pattern transmitter 300, and a bit controller. , 400, a Tx SHW interface 500, an Rx SHW interface 600, and a test pattern receiver 700.

The PP interface 100 interfaces with the upper PP (PheriPheral), stores Test SHW, Channel, and Bit information in the DPRAM, and reads the test result.

The microcontroller 200 reads TEST SHW, Channel, and Bit information received from the PP interface 100 and writes the corresponding Channel and Bit Control information to the test pattern transmitter 300.

In addition, the microcontroller 200 reads the data corresponding to the TEST SHW and the channel region from the test pattern receiver 700 and determines whether the transmitted data matches the received data.

The test pattern transmitter 300 reads TEST SHW, Channel, and Bit information and transmits a Test Pattern to a channel of a designated SHW, and reads and writes the Bit Control information to the bit controller 400 when Test transmission starts.

In addition, the test pattern transmitter 300 may simultaneously process many channels by using a high-speed DSP to transmit and receive test pattern data in real time.

The bit controller 400 functions to bit control the channel of the designated SHW, and in particular, the test data can be sent to the bit designated as Test by reading the voice signal and the test bit information of the device terminal of the Tx SHW interface 500. Control the Tx SHW interface 500.

The Tx SHW interface 500 receives a data signal and a device terminal voice signal received from the test pattern transmitter 300, and transmits a voice signal and a test pattern data to a designated bit under the control of the bit controller 400. At this time, the test pattern is sent to the designated bit according to the bit information, and the voice signal is sent to the unspecified bit. If all bits are Test, the test pattern is out. On the contrary, if all bits are unspecified as Test, the entire voice signal is transmitted.

The Rx SHW interface 600 transmits the PCM data received in the SHW to the test pattern receiver 700.

The test pattern receiving unit 700 determines whether the data sent from the test pattern transmitting unit 300 and the information read by the same are the same, and stores the test result in the corresponding area to be processed by the microcontroller 200. .

In particular, the test pattern transmitter 300 and the test pattern receiver 700 may perform real-time processing using a high-speed DSP technology, and as the MIPS, the DSP processing speed, increases, more channels may be tested simultaneously.

As described above, in the present invention, a channel in a call can also be tested by specifying a bit of the corresponding channel that does not interfere with the call, or test by specifying all bits, which will be described below.

First, the first TEST method will be described.In the PCM signaling method of A-law and Mu-law method, Bit 7 of Bit 0 ~ Bit 7 is Sign Bit (polar bit, +,-signal) information, and the rest Bit 6 to 0 represents the strength of the voice signal.

Since the signal component of Bit 0 represents the fine signal strength and the signal strength increases as it goes up to Bit 6, in the present invention, the test pattern is inserted into the area of Bit 0 or Bit 1, which is a bit with low voice distortion. Will be checked.

In the second TEST method, even if the busy path is temporarily disconnected for several ms, the busy subscriber does not feel minute influence. Therefore, in the present invention, the test pattern is repeated for several ms in a cycle that does not interfere with the call. It is possible to test the channel during the call by inserting it.

That is, in the present invention, it is possible to check the path with all calls by implementing the function of testing at the device stage, and when the test function is embedded at the T-Switch stage, the T-S-T section can be checked.

In addition, 8k, 16k, 24k, 32k, 40k, 48k, 56k, 64kbps variable bit testing is available per channel, and it is possible to test by designating the bit of the channel without disturbing the call.

In particular, the channel can be tested by inserting the pattern data into a specific bit column to enable the path check or by inserting a test pattern in a short time so that there is no problem during the call.

3 is a diagram illustrating a method for checking a call path in a public telephone network according to the present invention.

As shown in FIG. 3, the apparatus for testing a call path of the present invention first generates a test pattern (Test Pattern) for checking a call path (S10).

Subsequently, when the test pattern is generated, the test pattern is read (S20) by reading the TEST SHW, Channel, and Bit information to the channel of the designated sub highway SHW.

At this time, it is possible to process many channels at the same time using a high-speed DSP to transmit and receive test pattern data in real time.

Subsequently, the test pattern and the device-end voice signal transmitted through the channel of the designated sub highway SHW are read, and the test pattern data is transmitted in a designated bit according to the generated test pattern information (S30).

That is, in step S30, the channel is tested by manipulating a bit string that does not interfere with the call, or the channel is tested by inserting a test pattern for several ms at intervals that do not interfere with the call.

In particular, in the method of manipulating the bit string, test pattern data is transmitted by inserting a test pattern into a designated bit according to bit information and inserting a voice signal into an unspecified bit.

In addition, the test pattern is periodically inserted to test the test pattern at intervals that do not interfere with the call when all bits are designated as test bits according to the test pattern information when the test pattern data is transmitted. Test the channel by inserting ms and sending test pattern data.

Accordingly, when receiving the test pattern data transmitted with the designated bit according to the test pattern information through the T-Switch (S40), it is determined whether the transmitted data matches the received data (S50) and then the determined test result. The information is stored in the corresponding area (S60) and processed.

Thus, in the present invention, it is possible to check all the paths by implementing the function of checking the call path in the device stage, and when such a function is embedded in the T-Switch stage, it is possible to check the T-S-T section.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention attached to the claims. will be.

According to the present invention, it is possible to test the call of all channels and also check the route within the range that does not interfere the call in the channel, thereby efficiently checking the path of the call to increase the quality of the PATH by the circuit switching call Can be.

In addition, the cabling state of the corresponding section can be grasped to facilitate the system maintenance.

Claims (15)

In the call path inspection apparatus in a public telephone network, A microcontroller unit for generating a test pattern for checking a call; A test pattern transmitter configured to receive a test pattern generated from the micro controller and transmit the test pattern through a channel of a designated sub highway; An SHW interface unit for receiving a test pattern and a device-end voice signal transmitted from the test pattern transmitter and transmitting test pattern data; And a bit controller unit for controlling the SHW interface unit to transmit the test pattern data to a designated bit according to the test pattern information generated from the microcontroller. The method of claim 1, The test pattern transmission unit, An apparatus for checking a call path in a public telephone network, wherein a plurality of channels are processed simultaneously using a high-speed DSP to transmit and receive test pattern data in real time. The method of claim 1, The SHW interface unit, And a voice signal and a test pattern data are transmitted according to bit information according to bit information under the control of said bit controller. The method of claim 3, wherein The SHW interface unit, And inserting a test pattern into a designated bit according to the bit information and inserting a voice signal into an unspecified bit to transmit test pattern data. The method of claim 4, wherein The test pattern data, Bit 7 ~ Bit 7 of the PCM signaling method, Bit 7 is the polarity (Sign Bit) information, Bit 6 ~ Bit 0 is a device for checking the call path in the public telephone network, characterized in that the strength of the voice signal. The method of claim 5, And the test pattern is inserted into an area of Bit 0 or Bit 1 having low voice distortion. The method of claim 3, wherein The SHW interface unit, And a test pattern is inserted at regular intervals when all bits are designated as test bits according to the bit information to transmit test pattern data. In the call path inspection method in a public telephone network, Creating a test pattern for checking in currency, Receiving the generated test pattern and transmitting it through a channel of a designated sub highway; And receiving the transmitted test pattern and the device-side voice signal and transmitting test pattern data in a designated bit according to the generated test pattern information. . The method of claim 8, The process of transmitting the test pattern data, And transmitting the voice signal and the test pattern data in designated bits according to bit information. The method of claim 9, And inserting a test pattern into a designated bit according to the bit information and inserting a voice signal into an unspecified bit to transmit test pattern data. The method of claim 10, The test pattern data, Bit 7 ~ Bit 7 of the PCM signaling method, Bit 7 is the polarity bit (Sign Bit) information, Bit 6 ~ Bit 0 is a way to check the call in a public telephone network, characterized in that the strength of the voice signal. The method of claim 11, And the test pattern is inserted into an area of Bit 0 or Bit 1 having low voice distortion. The method of claim 8, The process of transmitting the test pattern data, And if all bits are designated as test bits according to the bit information, inserting a test pattern at regular intervals and transmitting test pattern data. In the call path inspection method in a public telephone network, Creating a test pattern for checking in currency, Receiving the generated test pattern and transmitting it through a channel of a designated sub highway; Receiving the transmitted test pattern and the device-side voice signal; And inserting a test pattern into a designated bit according to the generated test pattern information and inserting a voice signal into an unspecified bit to transmit test pattern data. How to check. In the call path inspection method in public telephone network Creating a test pattern for checking in currency, Receiving the generated test pattern and transmitting it through a channel of a designated sub highway; Receiving the transmitted test pattern and the device-side voice signal; And transmitting a test pattern data by inserting a test pattern at a predetermined period when all bits are designated as test bits according to the generated test pattern information.

Images