KR970009299B1 - Interface maintenance data operating method - Google Patents

Abstract

A method for operating the interface maintanace/conservation channel value where is used as the HDLC(high level data link control) frame and is the communication protocol to be necessary to transmit the channel value(Cv1) of the ISDN subscriber as the HDLC frame.

Description

Interface Maintenance Channel Information Operation Method

Figure 1 is an ISDN diagram generally connecting multiple devices.

2 is a message structure diagram of a Cv1 channel according to the present invention.

3 is a general flow diagram of message processing of Cv1 channel information according to the present invention;

4 is a flowchart of a request / response process according to the present invention.

5 is a process flow diagram for subscriber interface information according to the present invention.

6 is a process flow diagram for C / I (Command / Indication) code information according to the present invention.

7 is a process flow diagram for a code in accordance with the present invention.

8 is a process flow diagram for M456 code information according to the present invention.

9 is a flow chart for register idle information processing according to the present invention.

10 is a process flow diagram for an NT test mode in accordance with the present invention.

11 is a flowchart illustrating processing of received signal power / SNR information according to the present invention.

12 is a flow chart for Impossible Code processing in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10 to 10n: TE (Terminal Equipment)

11 to 11n: NTE (Network Terminal Equipment)

20: multiple device 21 to 21n: LT (Line Termination)

22,23: V4 interface

The present invention relates to a method for operating an interface maintenance channel.

CCITT Q.512 recommends that Cv1 (channel value) channel information in an ISDN subscriber simple multiplex device be used in a multi-frame format. Is currently being studied. In order to use CCITT's multiframe status, a process for designing and ICing a circuit for configuring a multiframe is required. When a multiframe type in use is different from a CCITT result, all processes are required again.

1 is a network diagram of a general ISDN.

In the figure, 10 to 10n are TE, 11 to 11n are NTE, 20 is a multiple device, 21 to 21n are LT, 22 and 23 are V4 interfaces, 30 is ISDN, and 31 is a Basic Access Multiplexer (BAMX).

As shown in the figure, a Primary Line Termination Board (PMUX) utilizes a primary military digital relay transmission system to accept ISDN subscribers who accept local or remote ISDN subscribers as basic access and simply multiply them. ISDN subscriber simple multi-device to accept as a connection to an ISDN exchange through a V4 interface, where the ISDN exchange is required to perform maintenance functions on the ISDN subscriber line of the ISDN simple multi-device belonging to PMUX.

The present invention devised to meet the above requirements, the communication protocol necessary to transmit the Cv1 channel information of each ISDN subscriber in the form of a high level data link control (HDLC) frame, that is, HDLC The purpose is to provide a method of operating Cv1 channel information used in a frame form.

In order to achieve the above object, the present invention provides an ISDN network for connecting multiple devices; A first step of classifying each task according to a type to enable multitasking, a second step of performing a process for request / response (Answer_back) after performing the first step, and after performing the first step, a subscriber interface (Subscriber Interface) A third step of performing the processing of the information, after performing the first step, a fourth step of performing an independent processing of the C / I code information, after performing the first step, EOC (embeded) operations channel) A fifth step of performing an independent processing on code information, After the first step of performing a sixth step of performing an independent processing on M456 code information, After performing the first step, Register idle A seventh step of performing independent processing on value), an eighth step of performing an independent processing on NT test mode information after performing the first step, and after the first step, receiving signal power (Receive) Power And a tenth step of performing a process for an impossible code after performing the first step of performing a process for SNR information.

In the following description, ISDN simple multiple devices are used as multiple devices.

Table 1 below shows the positions of B, D and Cv1 channels in the V4 interface frame structure. The Cv1 channel is allocated at 16Kbps for each subscriber and therefore accommodates 12 subscribers in Europe and 8 subscribers in North America at a base rate of 2B + D.

European timeslot array example

Bit array example of D and C timeslot

2 is a message structure of a Cv1 channel according to the present invention.

In ISDN subscriber simple multiplexer, messages using Cv1 channel communicate in full-duplex format in the form of HDLC frames.

As shown in the figure, the message structure of the Cv1 channel is transmitted in the form of an HDLC frame including one octet and a message content for distinguishing a message type.

The scheme for the control of the Cv1 channel is based on the subscriber acceptance of multiple devices consisting of the ISDN U interface and 2B1Q encoding, and also allows the multiple devices to accommodate the S interface.

Therefore, based on the functions that can be provided in the multi-frame configuration of the U interface 2B1Q line code, the function that cannot be serviced due to the difference between the interface and the line code is not required by the network in consideration of the subscriber configuration of multiple devices in the network. It also informs that it cannot perform a function when it is requested from the network.

Information transmitted through the Cv1 channel includes the contents of testing the Cv1 control unit of the network and multiple devices, transmission error recovery and non-execution of the command, C / I (Command / Indication) control, and transparent transmission to the subscriber side through the line interface. Make sure that all the necessary information, including information about track conditions, are needed for maintenance.

2B1Q superframe configuration referred to in the present invention is shown in Table 2 below.

1: hold bit, NTM: Nt1 in Test Mode bit, CRC: cyclic redundancy check covers 2B + D, EOC: embeded operations channed, a: address bit, dm: data / message indicator, i: information (data / message), ACT: activation bit, PS1, PS2: power status bits, FEBE: far end block error bit, CSO: cold start only, DEA: deactivation.

3 is an overall flowchart of message processing of Cv1 channel information according to the present invention.

First, it is classified as a task according to the type so that multitasking can be performed independently of functional association.

According to the classification (0), the process for the request / response (Answer_back) is performed (100), the process for the subscriber interface (Subscriber Interface) information is performed (200), and the independent for the C / I code information Perform the process (300).

In addition, an independent process for EOC code information is performed (400), an independent process for M456 code information is performed (500), and an independent process for register idle information is performed (600). In operation 700, the NT test mode information is independently processed. In addition, a process of receiving power power / signal-to-noise ratio (SNR) information is performed (800) and a process of impossible code is performed (900).

The process ends after each independent process.

First, Answer_back request / response is to test the processor part of multiple devices. The network periodically checks and manages the status of multiple devices. Answer_back Initialization indication / verification is intended to indicate that the processor of a multiple device has been restarted. This message allows the network to immediately update the status management of multiple devices. Answer_back Response and Answer_back initialization display includes information on the status of the subscriber board mounting and hernia of multiple devices.

The reset request is for resetting the processor of multiple devices in the network. Upon request of the network, the multiple devices restart and initialize all states.

4 is a flowchart illustrating an answer_back request / response process according to the present invention.

As shown in (a), the network classifies the process (101), if necessary according to the classification, increases the counter while requesting Answer_back (102), starts a timer, and waits for a response (103).

In response to the classification in the classification 101, it is checked whether the timer is in operation 104 at the time of receiving the response (105). 106).

When the timer before receiving a response expires according to the classification in the classification 101 (107), it is checked whether the count value reaches the set value (108). If the set value is not reached, the request is again performed (109). Increase the value, start the timer and return (110) and if the set value is not reached, the state for the multi-device is abnormally managed and terminated (111).

When the network receives the Answer_back initialization indication message from the multiple devices according to the classification 101 (112), it updates the information about the multiple devices (113) and transmits and terminates the Answer_back initialization response (114).

Upon receiving a message about a state change occurrence from multiple devices according to the classification 101 (115), the state is updated (116), the Answer_back change response is terminated (117).

According to the classification 101, the network sends a reset and ends (118) to restart the multiple devices if necessary.

In the multi-device as shown in (b), each processing process 119 is classified, and the timer for state change transmission is removed (120) for the answer_back request of the network (121), and immediately responds to the answer_back and terminates (122). ).

In the case of multiple device reactivation such as restart according to the classification in the classification 119, it notifies the network with an Answer_back initialization indication (123), increments the counter, starts a timer, and waits for an initialization response and returns (124).

Upon receiving the initialization response 125 according to the classification in the classification 119, it is checked whether the timer is operating (126). If not, the timer is terminated. .

When the timer before the initialization response expires according to the classification in the classification 119 (128), if the Answer_back communication status with the network is good, retransmission is performed (129).

According to the classification in the classification 119, when a state change that is not a reoperation of the processor occurs in the multiple devices, the answer_back change indication is transmitted (130), and the counter and timer are started and terminated (131).

Upon receiving the change response according to the classification in the classification 119 (132), the counter and timer are initialized and terminated (133).

When the timer before the change response expires according to the classification in the classification 119 (134), it is checked whether the counter has reached the set value (135).

Upon receiving the reset according to the classification in the classification 119 (138), the multiple device performs a restart to initialize and terminate the processor, peripheral elements and associated data (139).

In addition, the network should perform a possible maintenance function according to the subscriber access interface or the line signal coding method of the multiple devices. Therefore, the network should have information about subscriber acceptance status of multiple devices. The interface information is divided into U interface 2B1Q, U interface 4B3T and S interface connection according to the preferred coding scheme of the U interface.

5 is a flowchart illustrating processing of subscriber interface information according to the present invention.

In the process of processing subscriber interface information as shown in (a), the network performs classification as necessary (201), requests subscriber interface information when necessary (202), starts a timer, waits for a response, and returns. (203).

In response to the classification 201, the response time 204 checks whether the timer is in operation (205). If not, it terminates if it is not in operation.

Upon expiration of the timer according to the classification 201 (207), the state management in the network is terminated (208).

As shown in (b), in the multiple device, if the network requests subscriber interface information (209), it immediately responds to the subscriber interface and terminates (210).

In addition, when the network receives a message from multiple devices, the network should store the status of the subscriber. If the device receives a message from the network, the network should perform the contents of the received message to the subscriber. In addition, when the multi-device receives a value not defined to be transmitted from the network from the subscriber, the multi-device does not transmit the content to the network and manages it.

C / I code information includes activation, deactivation related errors, and U interface reset.

6 is a flowchart of processing of C / I (Command / Indication) code information according to the present invention.

As shown, the network or multiple devices classify the execution process as necessary (301), request C / I code transmission according to the classification (302), increment the counter, start a timer, wait for a response, and return (303). .

According to the classification 301, the response receiver 304 checks whether the timer is in operation (305). If it is not in operation, it terminates and if it is in operation, it processes effectively and initializes and terminates the timer and counter (306).

When the timer before receiving a response expires according to the classification 301 (307), it is checked whether the count value reaches the set value (308). If the set value is not reached, the C / I code transmission request and the timer are started. It returns (309, 310) and reaches the set value and terminates according to state management in the network or multiple devices (311).

According to the classification 301, when the network or multiple device receives the C / I code transmission request (312), it stores the necessary information and immediately responds and terminates (313).

The following is defined to transmit contents transmitted transparently through U interface between subscriber networks. The multi-device shall ensure that the information received from the network is delivered in accordance with the subscriber's U interface, and the content received from the U interface shall be delivered to the network as defined between the multi-device and the network.

EOC code information includes 2B + D channel loopback (LBBD), B1 channel loopback (LB1), B2 channel loopback (LB2), CRC contamination notification (NCC), CRC pollution request (RCC), undefined EOC reception (UTC) , Hold (H), and normal recovery (RTN), and the recipient address is included in this information.

7 is a process flow diagram for an EOC code in accordance with the present invention.

First, the process for the EOC code is classified as necessary (401).

According to the classification 401, the network or multiple devices increase the counter and start the timer, requesting EOC code transmission (402), if necessary, and wait for a response (403).

In response to the classification 401, when receiving a response to the EOC code transmission request and termination (404), it is checked whether the timer is running (405). If not, the timer terminates. And ends (406).

When the timer before receiving a response expires (407) according to the classification (401), it is checked whether the count value reaches the set value (408). If the set value is not reached, the EOC code transmission request and timer are started and returned. (409, 410) If the set value is not reached according to the state management in the network or multiple devices and ends (411).

According to the classification 401, when the network or multiple device receives the EOC code transmission request (412), it stores the necessary information, immediately responds and ends (413).

The M456 code is then defined identically to the multiframe functionality of U interface 2B1Q. M456 information transmission from the network to multiple devices shall be delivered to the subscriber through the U interface. In addition, M456 information from the subscriber must be transmitted to the network via multiple devices.

The M456 code information allows transparent functions between the network and multiple devices when undefined functions between the 2B1Q network and multiple devices are implemented in the device using bits of the M456 location in the 2B1Q superframe. For sake.

8 is a flowchart illustrating processing of M456 code information according to the present invention.

First, the process of the M456 code is classified as necessary (501).

According to the classification 501, the network or multiple device requests the M456 code transmission if necessary (502), increments the counter, starts a timer, waits for a response and returns (503).

In response to the classification 501, the M456 code transmission request and response response upon termination (504) checks whether the timer is running (505), if not in operation, terminates and if it is in operation to effectively process the timer and counter to initialize And ends (506).

When the timer before response is expired according to the classification 501 (507), it is checked whether the count value reaches the set value (508). If the set value is not reached, the M456 code transmission request and timer are started and returned. If the set value is reached (509, 510), the process ends according to the state management in the network or multiple devices (511).

According to the classification 501, when the network or the multi-device receives the M456 code transmission request (512), it stores the necessary information, immediately responds and ends (513).

Also, if a network requests multiple device register data about the CRC error counter, the multiple device reads the corresponding register value and responds.

Frames transmitted from the multiple devices to the network include NEBE (Near End Block Error) / FEBE (Far End Block Error) values, and register information is transmitted every second after a request from the network.

9 is a flowchart of CRC register information processing according to the present invention.

As shown in (a), the network classifies the processing of the CRC register information as necessary (601).

According to the classification 601, the network requests the start or end of register information transmission if necessary (602), increments the counter, starts a timer, waits for a response, and returns (603).

According to the classification 601, upon receiving the response to the start or end of the register information transmission (604), it is checked whether the timer is operating (605). If not, the timer is terminated. In operation 606, the register information transmission start or end is indicated and ends.

When the timer before receiving a response expires (607) according to the classification (601), it is checked whether the count value reaches the set value (608). If the set value is not reached, the register idle information transmission request and the timer are started and returned. If the set value is reached (609, 610), the process terminates according to state management in the network or multiple devices (611).

According to the classification 601, it is checked whether register information transmission is active (612) when the register information is received (612). If not, it is terminated if it is not activated. If it is activated, the received value is effectively processed and then terminated (614).

As shown in (b), in the multiple device, the process is classified as necessary (615).

Upon receiving the start of register information transfer according to the classification 615 (616) it immediately responds and starts and returns a timer for reading the register (617, 618).

Upon receipt of the end of register information transfer according to the classification 615 (619), it immediately responds (620) and stops and terminates the timer for reading the register (621).

When the timer for reading a register expires according to the classification 615, the values of the NEBE and FEBE registers are read and transmitted to the network, and the timer for reading the next register value is restarted and returned (625).

The exchange may then require the NT to operate in a particular state in order to perform a test on the subscriber line in conjunction with the NT connected to the subscriber line of the multiple device. This command can be requested from the network to multiple devices when performing out-of-service maintenance procedures on the network. Responses from NT are detected on multiple devices and sent to the network. NT test modes include an insertion loss measurement mode (ILMM) and a quiet mode (QM).

10 is a process flow diagram for an NT test mode according to the present invention.

First, the process for NT test mode in a network and multiple devices is classified as necessary (701).

According to the classification 701, the network or multiple device transmits NT test mode information if necessary (702), increments the counter, starts a timer, waits for a response and returns (703).

According to the classification 701, when the response to the NT test mode transmission request and termination is received (704), it is examined whether the timer is running (705). Initialize and terminate (706).

When the timer before receiving a response expires according to the classification 701 (707), it is examined whether the count value reaches the set value (708). If the set value is not reached, the NT test mode transmission request and the timer are started and returned. If the set value is reached (709, 710), the process terminates according to state management in the network or multiple devices (711).

According to the classification 701, when the network or the multi-device receives the NT test mode information (712), it stores the necessary information and immediately responds and terminates (713).

Next, the network may request the power level (dB) and SNR for the received signal of the subscriber line to the multiple devices, which reads and transmits the value immediately without acknowledgment. This message can be used in the procedure to test the status of line transmissions.

11 is a flowchart illustrating processing of received signal power / SNR information according to the present invention.

As shown in (a), in the network, processing of received signal power / SNR information is classified as necessary (801).

In accordance with the classification 801, the network or multiple devices increase the counter and start the timer waiting for a response (803), requesting reception signal power / SNR information transmission if necessary (802).

According to the classification 801, when receiving a response to the request for receiving and terminating the received signal power / SNR information (804), it is checked whether the timer is running (805). And the counter is initialized and terminated (806).

When the timer before receiving a response expires (807) according to the classification (801), it is checked whether the count value reaches the set value (808). If the set value is not reached, the received signal power / SNR information transmission request and timer are checked. Start and return (809, 810) if the set value is reached according to the state management in the network or multiple devices and ends (811).

As shown in the diagram (b), in the multiplexing device, if there is a request for received signal power / SNR information of the network (812), it immediately responds to the received signal power / SNR information and ends (813).

Next, when the multi-device cannot execute a command received from the network, it immediately informs the network of the command as unable to execute the command instead of acknowledgment. The information of Impossible Code includes information that cannot be performed.

12 is a flow chart for Impossible Code processing in accordance with the present invention.

As shown in (a), when the impossible code processing process processed in the network receives a response indicating that the multi-device cannot perform the information requested by the network (901), it follows the state management in the network and ends (902). .

As shown in (b), the impossible code processing process performed by the multi-device is performed when the information is received from the network (903) and whether the received information can be processed (904). It transmits so that it can be processed as otherwise, it notifies the network that it can not perform and ends (905).

As described above, the present invention makes it difficult for foreign companies to enter the domestic ISDN in the future by proposing a unique Cvl channel operation method when the Cvl channel transmission standard on the V4 interface is not specified in CCITT, and Cvl channel transmission uses an HDLC controller. This can facilitate development and make it impossible for foreign companies to enter multiple devices in the future. In addition, the ISDN network enables the use of ISDN simple multiple devices and guarantees smooth Cvl channel information transmission, contributing to the early realization of domestic ISDN services.

Claims (10)

An integrated information communication network for connecting multiple devices; A first step (0) of classifying each task according to a type to enable multitasking, a second step (100) of performing a request / response process after performing the first step (0), and the first step After performing step (0), the third step (200) of performing the processing of the subscriber interface information, and after performing the first step (0), the fourth step of performing an independent processing of the command / instruction code information (300) After performing the first step (0), the fifth step (400) to perform an independent process for the embedded operating channel code information, after performing the first step (0), to the M456 code information Performing a separate process related to the sixth step 500, and after performing the first step (0), performing a separate process related to the register idle information 600 (600) and performing the first step (0). After the eighth step 700 of performing an independent process for the network terminal test mode information, after performing the first step (0), And a ninth step (800) for performing a process for new signal power / signal-to-noise ratio information, and a tenth step (900) for performing a process for impossible codes after performing the first step (0). Interface maintenance channel information operation method. The method of claim 1, wherein the second step (100) comprises; The processing in the network includes: a first process 101 for classifying the processing process, and after performing the first process 101, a process of increasing the counter while requesting a request / response, starting a timer, and waiting for a response and returning it. After the second process (102, 103), the first process (101), the third process (104 to 106), the first process to initialize and terminate the timer and counter by effectively processing if the timer is operating when receiving a response, the first After the process 101, if the timer expires before receiving the response, the fourth process (107 to 111) to perform the re-request or to abnormally manage and terminate the status for the multi-device depending on whether the count value reaches the set value, After performing the first process 101, when the network receives the request / response initialization indication message from the multiple devices, the fifth process 112 to update information on the multiple devices, transmit and terminate the request / response initialization response, and terminate (112 to 114). , The first process After the execution of the first process (101), the sixth process (115 to 117) for updating the status when receiving a message about a state change occurrence from the multiple devices after performing the first process (101), if the network requires the multiple devices A seventh process 118 of transmitting and terminating a reset to restart the process is performed, and the process of the multi-device is performed after the eighth process 119 of classifying the process and the eighth process 119. In response to the request / response request of the network, the process of removing the timer for the state change transmission, etc., and immediately responding to and terminating the ninth process (120 to 122), and after performing the eighth process (119), the request is performed when the multi-device It is valid if the timer is operating when receiving the initialization response after performing steps 10 (123, 124) and step 8 (119) for notifying the network with a response initialization indication, increasing the counter, starting the timer, and waiting for an initialization response. Timer and meter After performing the eleventh process (125 to 127) and the eighth process (119) for initializing and terminating handwriting, if the timer expires before the initialization response, the state management is performed and if the request / response communication state with the network is good, retransmission is performed. After performing the twelfth process (128, 129) and the eighth process (119) of terminating the estuary, if a state change occurs that is not a reoperation of the processor in the multiple devices, a request / response change indication is transmitted and a counter and a timer are started. And the thirteenth process (130, 131), and after performing the eighth process (119), the 14th process (132, 133), and the eighth process (119) to initialize and terminate the counter and timer when receiving the change response After the execution of the change process, if the timer expires before the change response, reprocessing and ending according to whether the counter reaches the set value (steps 134 to 137), and after performing the eighth step 119, the multi-device receives the reset. Restart the processor, peripheral Here and 16 process to initialize the relevant data and exit interface maintained, characterized in that comprising a (138, 139) complement the channel information management method. The method of claim 1, wherein the third step (200); The processing in the network includes a first process 201 for performing classification according to necessity in the network, and a second process for requesting subscriber interface information and waiting for a response by waiting for a response after performing the first process 201. (202, 203), after performing the first process 201, the third process (204 to 206) to update and terminate the multi-device state management by validly processing if the timer is operating when receiving a response, the first process When the timer expires, a fourth process (207, 208) is performed according to the state management in the network and terminates. When the timer expires, the process in the multi-device is performed immediately upon request of the subscriber interface information of the network. And a fifth process (210) for responding and terminating. The method of claim 1, wherein the fourth step (300) comprises; In the network / multiple device, after performing the first step 301 to classify the performing steps as necessary and performing the first step 301, the counter is increased while the command / command code is transmitted, the timer is started, and the timer waits for a response and returns. After performing the second process (302, 303), the first process (301), the third process (304 to 306), and initializes and terminates the timer and counter by effectively processing if the timer is operating when receiving a response, After performing step 1 (301), if the timer before receiving a response expires, the fourth step (307 to 311) is performed according to whether the count value reaches the set value or is followed by state management in a network or multiple devices. After the first process 301, if the command / command code transmission request is received, the interface maintenance channel comprising a fifth process (312 to 313) to store the necessary information, immediately respond and then terminateHow Information Works. The method of claim 1, wherein the fifth step (400); In the network / multiple device, if necessary, the first process 401 classifies the execution process for the embedded operating channel, and after performing the first process 401, if necessary, increases the counter while requesting the embedded operating channel code transmission. After the second process (402, 403) to wait and return a response to start the timer, and after performing the first process (401), it is valid if the timer is in operation when receiving a response to the request for the built-in operation channel code transmission and termination After the third process (404 to 406) for processing and initializing and ending the timer and counter, and after performing the first process (401), if the timer before response reception expires, a re-request is performed according to whether the count value reaches the set value. The fourth process (407, 408) to perform or terminate according to the state management in the network or multiple devices, the fifth process of immediately responding to and terminates the embedded operating channel code transmission request after performing the first process (401) ( 409 to 413) Interface maintenance channel information operating method, characterized in that the operation. The method of claim 1, wherein the sixth step (500); After performing the first process 501 and the first process 501 to classify the process according to the necessity in the network / multiple device, the counter is increased while the M456 code is transmitted and the timer is started and the timer waits for a response and returns. After performing the second processes 502 and 503 and the first process 501, a third process (504 to 506) for initializing and terminating a timer and a counter by validly processing the timer when the response is received. After the first process 201, if the timer before receiving the response expires, the fourth process (507 to 511) performs a re-request or terminates according to state management in a network or multiple devices according to whether the count value reaches a set value. And a fifth process (512, 513) which immediately responds to and terminates upon receiving the M456 code transmission request after performing the first process (501). The method of claim 1, wherein the seventh step (600); In the network, the first process 601 of classifying the process of register information transmission as necessary, and after performing the first process 601, increases the counter and starts the timer while requesting the register information transmission. After the second process (602, 603) waiting for a response and performing the first process (601), if the timer is in operation when receiving a response to the request and the end is processed effectively to initialize and terminate the timer and counter After performing the third process (604 to 606) and the first process (601), if the timer before response reception expires, perform the re-request according to whether the count value reaches the set value or manage the state in the network or multiple devices. In accordance with the fourth process (607 to 611), and after performing the first process (601), and the fifth process (612 to 614) to respond immediately upon receiving the register information, the process of performing in multiple devices, Need processing After performing the sixth process 615 to classify according to the sixth process (615), the seventh process (616 to 618), which responds immediately after receiving the start of register information transmission and starts and returns a timer for reading the register, After performing the sixth process 615, if the end of the register information transmission is received immediately responds to the eighth process (619 to 621) to stop and terminate the timer for reading the register, after performing the sixth process (615), When the timer for reading is expired, the ninth process (622 to 625) of reading the values of the near-end block error and far-end block error register to the network and restarting the timer for reading the next register value is returned. Interface maintenance channel information operation method. According to claim 1, wherein the eighth step (700); After performing the first process 701 and the first process 701 to classify the network termination test mode as necessary in the network / multiple device, increase the counter and start the timer and wait for a response by requesting transmission of the network termination test mode. After performing the second processes 702 and 703 to return and the first process 701, the timer and counter are initialized and terminated when the timer is in operation. After performing the third process 704 to 706 and the first process 701, if the timer before response reception expires, re-request is performed according to whether the count value reaches a set value or a state in a network or multiple devices. A fourth process (707 to 711) according to management and a fifth process (712, 713) to immediately respond and terminate upon receiving the network termination test mode transmission request after performing the first process (701 to 711). Interface maintenance channel information as to how to operate. The method of claim 1, wherein the ninth step (800) comprises; In the network processing, the first process 801 for classifying the processing of the received signal power / signal-to-noise ratio information as necessary, and after performing the first process 801, transmits the received signal power / signal-to-noise ratio information. After the second process (802, 803) of waiting for a response and starting the timer to wait for a response and returning the request, the first process 801 is performed. After performing the first process 804 to 806 and the first process 801 to initialize and terminate, if the timer before response reception expires, re-request is performed according to whether the count value reaches the set value or the state in the network. The fourth process (807 to 811) according to the management and the termination, and the processing in the multiple devices, if the request for received signal power / signal to noise ratio information of the network immediately responds to the received signal power / signal to noise ratio information And it ends the process of claim 5, characterized in that keeping interface consisting of 813 Maintenance channel information how to operate. The method of claim 1, wherein the tenth step (900); The process of processing an impossible code in a network is performed by the first process 902, which terminates following state management in a network when receiving a response indicating that the multiple devices cannot perform the information requested by the network. After receiving the information from the network, after performing the second processes 903 and 904 for checking whether the code is executable, the second processes 903 and 904 are performed. Otherwise, a third process 905 of informing the network that it cannot be performed and terminating it.