KR20030086786A - Surveillance and Control Method for the ONU of ATM-PON System - Google Patents

Abstract

PURPOSE: A method for the monitoring control and operation management of an ONU(Optical Network Unit) system in an ATM-PON system is provided to process an ONU monitoring control function in real time and to offer a high-flexible monitoring function by recognizing line cards according to services, and to manage the information of an ONU system through an operation management function. CONSTITUTION: An ATM-PON ONU system comprises an operation management part(110) and a monitoring control part(130). The operation management part(110) consists of a fault management part(201), a configuration management part(202), a connection management part(203), and a performance management part(204). The fault management part(201) executes a management/report function for fault information. The configuration management part(202) executes a management/report function for configuration information. The connection management part(203) executes a management/report function for connection information. The performance management part(204) executes a management/report function for performance information. The monitoring control part(130) consists of a fault processing part(210), a performance processing part(220), a configuration processing part(230), a hardware processing part(240), and an INC processing part. The fault processing part(210) is composed of a fault report processing part(211), a fault management processing part(212), a loopback processing part(213), and a PM/CC activation processing part(214). The fault report processing part(211) executes a fault activation/deactivation function. The fault management processing part(212) executes a fault log management function, a fault class management function, a fault test function, and a visible/audible managed alarm management function. The loopback processing part(213) executes a loopback function among the fault test function. The PM/CC activation processing part(214) executes a PM/CC activation/deactivation function among the fault test function.

Description

Surveillance and Control Method for the ONU of ATM-PON System in ATM-POON System

The present invention relates to an integrated processing apparatus and method for ONU monitoring control and operation management in an ATM-PON system. More specifically, the present invention relates to an ONU in an ATM-PON system. (Optical Network Unit) In the ATM-PON system that integrates the hierarchical supervisory control function of the system and the operation management function of the ONU system, the OLT (Optical Line Terminal) system efficiently monitors and controls the ONU system in real time. The present invention relates to an integrated processing device and method for ONU monitoring control and operation management.

In general, in an ATM-PON system, the ONU is located between the OLT and the subscriber station. ATM service subscribers connected to ONU can receive various ATM services through OLT system. The services that can be provided by ATM service subscribers through the OLT system include VOD, high-speed Internet, and digital CATV in addition to the existing POTS service. Traffic from the subscriber is multiplexed in the ATM access system and forwarded to the ATM switch, passing through the high-speed ATM switch to the service node providing the service.

In a conventional ATM access system, one control processor controls all line cards in the system and one management processor performs all management tasks in the system. In such a conventional system, since a relatively small amount of supervisory control must be performed, it can be processed by one 32-bit CISC processor (for example, a processor such as the MC68030), and the system information to be managed by the management processor is relatively low. The small amount allowed it to be handled by one 32-bit processor.

However, as research on the access network progresses, the ATM access system is expanded from 16x16 155M system to 64x64 155M or 16x16 622M system as the integrated introduction of new ATM service (VOD, Digital CATV, high speed internet simultaneously) is required. It is becoming. As the system expands, the hierarchical management function that needs to be processed in real time within the system is rapidly increased. In addition, the management information to be managed has increased rapidly.

Therefore, the conventional method used in such a system structure not only can not guarantee the real-time processing of the supervisory control function, but also has a problem in that it is costly to implement and maintain a new supervisory control function.

In particular, recently, there is an active research on ATM-PON system, which is an alternative to the optical access network. The ATM-PON system, which can accommodate a large number of subscribers at low cost, consists of a point-to-multipoint configuration of the OLT system and the ONU system. The number of ONU systems to be managed by the OLT system, such as 32 or 64, also requires efficient system operation management. In addition, ATM services are being introduced (VOD, Digital CATV, high-speed Internet simultaneously).

However, there is a need for a competitive and flexible system that can provide services by replacing only the line card module according to service preferences or subscriber changes, and the monitoring and control of the ONU system is also required to ensure real-time processing and provide various services due to line card replacement. No module form was developed to respond flexibly, and no operation management module of the ONU system was developed so that the operation management part of the OLT system could operate remotely for the OLT system and all ONU systems.

Since ATM-PON system is composed of PON structure between OLT and ONU as an alternative to optical access equipment, much research is required for supervisory control and operation management for ATM-PON system.

The present invention devised to solve the above problems, the real-time processing the ONU supervisory control function in the ATM-PON system and provides a flexible supervisory control function by recognizing the line card for each service, and also operating in the ONU system Integration of ONU supervisory control and operation management in an ATM-PON system that provides information management and information processing of the ONU system remotely required via a dedicated communication channel from the operation management unit within the OLT system through the management function. It is an object of the present invention to provide a processing apparatus and method.

1 is an embodiment of a configuration diagram of an ATM-PON system according to the present invention.

2 is a block diagram according to an embodiment of the monitoring control unit and operation management unit according to the present invention.

3 is a flowchart showing an embodiment of a processing procedure in the operation management unit according to the present invention.

Figure 4 is a flow chart showing an embodiment of the processing in the failure processing unit according to the present invention.

5 is a flowchart showing an embodiment of a processing procedure in the performance processing unit according to the present invention.

6 is a flow chart showing an embodiment of a process in the shape processing unit according to the present invention.

7 is a flowchart illustrating an embodiment of a process performed by the initialization processor in the hardware processor according to the present invention.

8 is a flowchart illustrating an embodiment of a processing in a hardware API processing unit within the hardware processing unit according to the present invention.

9 is a flowchart illustrating an embodiment of a processing in an interrupt processing unit in a hardware processing unit according to the present invention.

10 is a flowchart showing an embodiment of a process in the INC processing unit according to the present invention.

Explanation of symbols on the main parts of the drawings

101: ATM-PON OLT system 102: optical distribution network

103: ATM-PON ONU system 110: operation management unit

120: INC processing unit 130: supervisory control unit

140: PON matching line card processing unit 150: subscriber line card processing unit

210: failure processing unit 220: performance processing unit

230: shape processing unit 240: hardware processing unit

In order to achieve the above object, the present invention provides a PON matching side line card processing unit connected to an OLT system and an optical line to perform ATM service processing, and a subscriber side line card connected to a subscriber side to perform ATM service processing. A processing unit, an operation management unit that performs operation management of the ONU system, a monitoring control unit which performs real-time control and hierarchical management of the subscriber side / PON matching side line card processing unit, an operation management unit of the OLT system, and an operation management unit of the ONU system In the monitoring control and operation management method of the ON system comprising an inter-node communication (INC) processing unit for performing information transfer between

Initializing the PON matching line card processing unit and the subscriber line line card processing unit and performing a hardware API function when hardware API processing is required, and performing an interrupt API function when an interrupt occurs from the subscriber side / PON matching line card processing unit. First step;

A second step of analyzing the operation management message when the operation management unit receives the operation management message from the OLT system, managing information for the corresponding function, and transferring a function-specific processing message for processing the operation management message to the monitoring control unit;

A third step of the monitoring control unit processing the corresponding function according to the request of the corresponding function-specific processing message transmitted in the second step and transferring the corresponding function processing result message to the operation management unit; And

The operation management unit includes a fourth step of delivering the processing result message delivered as the result of the third step to the OLT system through the INC processing unit.

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

1 illustrates an embodiment of a configuration diagram of an ATM-PON system according to the present invention, and illustrates an embodiment of an internal connection configuration of an ATM-PON system. As shown in FIG. 1, the ATM-PON system includes one ATM-PON OLT system 101 as a network side device, a plurality of ATM-PON ONU system 103 as a subscriber side device, and the ATM-PON. An optical distribution network (ATM-PON ODN) 102 is connected to the OLT system 101 and the plurality of ATM-PON ONU systems 103 and serves as an optical transmission medium. The optical distribution network 102 serves to distribute the optical signal between the ATM-PON OLT system 101 and the ATM-PON ONU system 103, preferably a multiplexing scheme and an optical splitter. The passive optical subscriber network in which a plurality of ATM-PON ONU systems 103 is connected to one ATM-PON OLT system 101 is used. The arbitrary ATM-PON ONU systems 103 are connected in a tree structure with the ATM-PON OLT system 101. In addition, the number of ATM-PON ONU systems 103 connected to one ATM-PON OLT 101 is determined according to the branching ratio of the optical distribution network 105.

On the other hand, although not shown in the figure, the ATM-PON OLT system 101 has an asynchronous transmission mode (ATM) exchange, a broadcast service node, an on-demand video server, an Internet service node, an ISDN switch, a telephone exchange, or A modem or the like can be connected.

The ATM-PON ONU system 103 is connected to the ATM-PON OLT system 101 through the optical distribution network 102 and performs the ATM processing. Supervisory control unit 130 connected to perform a subscriber line line card processing unit 150, the PON matching side line card processing unit 140 and the subscriber line line card processing unit 150 in real time and performs a layer management function ), An operation management unit 110 for operating management of the ATM-PON ONU system 103, and an INC processing unit 120 for transferring information between the line card processing unit, a monitoring control unit, and an operation management unit.

2 is a configuration diagram according to an embodiment of the monitoring control unit 130 and the operation management unit 110 according to the present invention, the monitoring control unit 130 and the operation management unit for processing real-time hierarchical monitoring control and operation management function ( 110 is a block diagram of the configuration. As shown in FIG. 2, the operation management unit 110 includes a failure management unit 201 for managing and reporting fault information, a shape management unit 202 for managing and reporting shape information, and connection information. Connection management unit 203 for managing and reporting, and performance management unit 204 for managing and reporting performance information. In addition, the monitoring control unit 130 is composed of a failure processing unit 210, a performance processing unit 220, a shape processing unit 230, a hardware processing unit 240, and the INC processing unit 120 for processing each function.

The failure processing unit 210 may include a failure report processing unit 211 performing a failure activation / deactivation function, a failure log management function, a failure grade management function, a failure test part function, and a failure management processing unit performing a visual audible management alarm management function ( 212), a loopback processing unit 213 performing a loopback function among the failure test functions, and a PM / CC activation processing unit 214 performing a PM / CC activation / deactivation function among the failure test functions.

The performance processor 220 is a physical layer, the performance report processing unit 221 performing the ATM layer periodic performance reporting function and physical layer current performance query, physical layer performance data initialization, ATM layer current performance query, ATM layer performance data initialization, It is composed of a performance management processing unit 222 that performs a performance cumulative threshold setting and inquiry function.

The shape processor 230 may include an initialization management processor 231 performing a function related to initialization, a shape management processor 232 performing a shape management related function, a connection management processor 233 performing a connection management related function, and a transfer. It is composed of a transfer processing unit 234 for performing a management-related function.

The hardware processor 240 is configured to perform an initialization function for the line card, a hardware API processor 242 for performing a hardware API function for the line card, and information received from the ISR based on the information received from the ISR. An interrupt processing unit 243 is configured to process a function of distributing an interrupt to another processing unit.

The INC processor 120 performs a message transmission function between OLT operation management and ONU operation management.

3 is a flow chart showing an embodiment of a process in the operation management unit for real-time monitoring control and operation management in accordance with the present invention. This will be described in more detail with reference to FIG. 3. When operation management of the ONU system starts, the operation management unit 110 receives an operation management message from the monitoring control processing unit 130 or INC processing unit 120 (S301) and analyzes the message (S302). If the result of the analysis of the message in the step (S302) failure management message (S303), the failure management message is interpreted again and branches according to the function according to the analysis result (S304). As a result of the analysis, if the failure is processed, the failure message is transferred to the failure processing unit 210 (S305), and if the failure is reported, the failure report message is transmitted to the INC processing unit 120 (S306).

However, in step S303, it is determined whether or not the failure management message is a configuration management message (S307). If the configuration management message is interpreted, the message is again interpreted and branched by the corresponding function according to the analysis result (S308). If the result of the analysis is a shape processing, a shape message is generated, transmitted to the shape processing unit 220, and ends. However, in the case of the analysis result shape report, the shape report message is transmitted to the INC processing unit 120 (S310) and ends.

If it is determined in step S307 that the operation management message is not a configuration management message, it is determined whether it is a connection management message (S311). If it is a connection management message, the message is interpreted again and branches according to the corresponding function according to the analysis result ( S312). If the analysis result of the connection management, the connection message is transmitted to the shape processing unit 220 (S313) and terminates. In the case of the analysis result connection report, the connection report message is transmitted to the INC processing unit 120 (S314) and ends.

However, if the result of the determination in step S311 determines whether the operation management message is a performance management message or not a connection management message (S315), if the performance management message is interpreted according to the analysis result after analyzing the performance management message. Branching by function (S316). If the result of the analysis is a performance process, the performance message is transmitted to the performance processing unit 220 (S317), and if it is a performance report, the performance report message is transmitted to the INC processing unit 120 (S318).

Figure 4 is a flow chart showing an embodiment of the processing in the failure processing unit for real-time monitoring control and operation management in accordance with the present invention. Referring to FIG. 4, when the failure message is received from the hardware processing unit 240 or the operation management unit 110 in the failure processing unit 210 (S401), the failure message is analyzed (S402). As a result of the analysis, if the failure message is a failure interrupt report message (S403), the failure type is determined (S404). If a failure occurs, a failure activation procedure is performed (S405) and a failure report message is generated to the operation management unit 110. Transfer (S406) and terminate the failure process. However, when the failure type is failure cancellation, a failure deactivation procedure is performed (S407), a failure report message is generated and transmitted to the operation management unit 110 (S408), and the failure processing is terminated.

In step S403, it is determined whether the failure message is a failure management message or not a failure interrupt report message (S409). If it is determined that the failure management message, the failure management message is interpreted as a failure log message and performs a failure log processing procedure (S411) generates a failure log report message and transmits to the operation management unit 110 (S412) The process ends. If the result of the analysis (S410) is a failure grade message, a failure grade processing procedure is performed (S413), a failure grade report message is generated and transmitted to the operation manager 110 (S414), and the failure processing is terminated. However, if the analysis result (S410) is a failure test message, perform a failure test processing procedure (S415), generate a failure test report message and deliver it to the operation management unit (110) (S416) terminate the failure processing, the analysis result In the case of the visible audible message, a visible audible processing procedure is performed (S417), a visible audible report message is generated and transmitted to the operation management unit 110 (S418), and the failure processing is terminated.

Meanwhile, as a result of the determination in step S409, if the failure message is not a failure management message, it is determined whether it is a loopback message (S419). If the failure message is a loopback message as a result of the determination, a loopback protocol is performed (S420), a loopback response message is generated and transmitted to the operation manager 110 (S421), and the loopback process is terminated. However, if it is determined in step S419 that the failure message is not a loopback message, it is determined whether the failure message is a PM / CC activation message (S422), and if the failure message is a PM / CC activation message, PM / The CC activation protocol is performed (S423), a PM / CC activation response message is generated and transmitted to the operation management unit 110 (S424), and the failure processing is terminated.

5 is a flowchart illustrating an embodiment of a processing procedure in a performance processing unit for real time monitoring control and operation management according to the present invention. Referring to FIG. 5, first, when the performance processor 220 receives the performance message 502 from the hardware processor 240 or the operation manager 110 (S501), the performance processor 220 analyzes it. As a result of the analysis, if the performance message is a performance interrupt report message (S503), then it is determined whether it is a performance report time (S504), if the performance report time is collected performance data (S505) and generates a performance report message to the operation management unit 110 ) And the performance processing ends. However, if it is not the performance report time in step S504, performance data is collected (S507) and the performance processing ends immediately.

As a result of the determination in step S03, it is determined whether the performance message is a performance management message if it is not a performance interrupt report message (S508), and if the performance message is a performance management message, the performance management message is interpreted and branched by the corresponding function ( S509). As a result of the analysis, if the performance management message is the current performance inquiry message, a current performance collection procedure is performed (S510), a current performance report message is generated and transmitted to the operation management unit 110 (S511), and the performance processing is terminated. If the performance management message is the performance threshold message (Threshold) message, performing the performance threshold procedure (S512) and generates a performance threshold report message and delivers it to the operation management unit 110 (S513) and ends, the analysis result When the performance management message is a performance data initialization message, a performance data initialization process is performed (S514), a performance data initialization report message is generated and transmitted to the operation management unit 110 (S515), and the performance processing ends.

6 is a flowchart illustrating an embodiment of a processing process in a shape processing unit for real time monitoring control and operation management according to the present invention. Referring to FIG. 6, when the shape processor 230 receives a shape message from the hardware processor 240 or the operation manager 110 (S601), the shape processor 230 analyzes the received shape message (S602). When the shape message is the initialization management message as a result of the analysis (S603), the initialization management message is interpreted and branched by the corresponding function (S604). In the case of the analysis result initialization message in step S604, an initialization procedure is performed (S605), an initialization report message is generated and transmitted to the operation manager 110 (S606). If the result of the analysis of step S604 is the initial state setting message, an initial state setting procedure is performed (S607), an initial state setting report message is generated, delivered to the operation manager 110 (S608), and ends. If the initializing management message is the initial state inquiry message as a result of the analysis of step S604, an initial state inquiry procedure is performed (S609), an initial state inquiry report message is generated and transmitted to the operation management unit 110 (S610). do. If the initializing management message is the current time message as a result of the analysis of step S604, a current time procedure is performed (S611), a current time report message is generated, transferred to the operation manager 110 (S612), and ends. If the initializing management message is a discharge condition message as a result of the analysis of step S604, a discharge condition procedure is performed (S613), a discharge condition report message is generated and transmitted to the operation manager 110 (S614), and the shape processing ends. do.

However, in step S603, it is determined whether the shape message is a shape management message if it is not an initialization management message (S615). If it is determined in the step S615 that the shape message is a shape management message, the shape message is interpreted and branched by the corresponding function (S616). First, when the shape management message is the current shape inquiry message as a result of the analysis in step S616, a current shape inquiry procedure is performed (S617), and a current shape inquiry report message is generated and transmitted to the operation manager 110 (S618). Exit. If the shape management message is the management state change message, as a result of the analysis of step S616, a management state change procedure is performed (S619), and a management state change report message is generated and transmitted to the operation manager 110 (620). do. If the shape management message is a board mounting message as a result of the analysis of step S616, an initialization procedure is performed (S621), a board mounting report message is generated and transmitted to the operation manager 110 (S622). If the shape management message is a board hernia message as a result of the analysis of step S616, a board hernia report message is generated and transmitted to the operation management unit 110 (S623), and the shape processing is terminated.

However, if it is determined in step S616 that the shape message is not a shape management message, it is determined whether the connection management message (S624). If it is determined that the configuration message is a connection management message, the connection management message is interpreted and branches for each function (S625). If the connection management message is the connection information inquiry message as a result of the analysis in step S625, a connection information inquiry procedure is performed (S626), a connection information report message is generated and transmitted to the operation management unit 110 (S627), and ends. . When the connection management message is a connection establishment / release message as a result of the explanation in step S625 (S628), a connection establishment / release report message is generated and transmitted to the operation management unit 110 (S628). S629) End. If the connection management message is a party setting / release message as a result of the analysis of step S625 (S630), a party setting / release report message is generated and transmitted to the operation management unit 110 (S630); S631) End. If the connection management message is a connection block / block release message as a result of the analysis in step S625 (S632) and performs a connection block / block release report message to the operation management unit 110. Transfer (S633) and ends.

However, if it is determined in step S624 that the shape message is not a connection management message, it is determined whether it is a switching management message (S634). If it is determined in the step S634 that the shape message is a transfer management message, the transfer management message is interpreted and branched for each function (S635). If the transfer management message is a transfer state inquiry message as a result of the analysis of step S635, a transfer state procedure is performed (S636), a transfer state report message is generated and transmitted to the operation management unit 110 (S637). If the result of the analysis of step S635 is the transfer management message is a failure interrupt report message, a transfer procedure is performed (S638), a transfer report message is generated, transferred to the operation management unit 110 (S639), and ends. If the result of the analysis of step S635 is the transfer management message is a board hernia message, a transfer report message is generated and transmitted to the operation management unit 110 (S640).

7 is a flowchart illustrating an embodiment of a processing process in an initialization processing unit in a hardware processing unit for real time monitoring control and operation management according to the present invention. Referring to FIG. 7, when the initialization processing unit 241 receives the initialization message from the shape processing unit 230 (S701), the initialization function API function is called (S702) and the initialization response message is transmitted to the shape processing unit 230. (S703), the initialization process ends.

8 is a flowchart illustrating an embodiment of a processing process in a hardware API processing unit in a hardware processing unit for real time monitoring control and operation management according to the present invention. Referring to FIG. 8, the hardware API processing unit 242 determines whether each processing unit requires hardware API processing (S801), performs a hardware API function if necessary (S802), and ends the hardware API processing.

9 is a flowchart illustrating an embodiment of a processing process in an interrupt processing unit in a hardware processing unit for real time monitoring control and operation management according to the present invention. Referring to FIG. 9, when an interrupt occurs from the subscriber line card processing unit 150 and the PON matching line card processing unit 140 (S901), the interrupt processing unit 243 performs an interrupt API function (S902). ) Determines the interrupt type (S903). As a result of the determination in step S903, if it is a fault interrupt, a fault interrupt report message is generated and transmitted to the fault processor 210 and the shape processor 230 (S904), and the interrupt process is terminated. If the determination result in step S903 is an OAM interrupt, an OAM interrupt report message is generated and transmitted to the failure processing unit 210 (S905), and the interrupt processing is terminated. In the case of the shape interrupt in step S903, a shape interrupt report message is generated and transmitted to the shape processing unit 230 (S906), and the interrupt process is terminated. In the case of 1 second interrupt in step S903, a performance interrupt report message is generated and transmitted to the performance processing unit 220 (S907), and the interrupt process is terminated. When the ATM adaptation layer (AAL5) interrupt is generated in step S903, an AAL5 interrupt report message is generated and transmitted to the INC processor 120 (S908), and the interrupt process is terminated.

10 is a flowchart showing an embodiment of a process in the INC processing unit for real-time monitoring control and operation management according to the present invention. Referring to FIG. 10, when the INC processing unit 120 receives an INC message from the hardware processing unit 240 or the operation management unit 110 (S1001), the INC message is analyzed (S1002). As a result of the analysis, when the INC message is an AAL5 split message (S1003), the AAL5 split function is performed (S1004), the CRC 32 calculation process is performed (S1005), and then the AAL5 cell is generated in the PON matching side line card processing unit 140. (S1006). However, if the result of the analysis determines that the INC message is an AAL5 recombination message if it is not an AAL5 split message (S1007). By performing (S1008), performing the AAL5 recombination function (S1009), generates an AAL5 message and delivers it to the operation management unit 110 (S1010) and ends.

As described above, the present invention implements a hierarchical control function and operation management function for the ONU system in the ATM-PON system so that the system operation management part of the OLT system is remotely provided with configuration and operation information for the plurality of ONU systems in real time. It can be easily managed and operated for the entire ATM-PON system by supporting the management. In addition, the INC processing function supports efficient ONU management by providing a dedicated communication channel and remote management function for information transfer between the OLT system and the ONU system.

Claims (7)

PON matching side line card processing unit connected to the OLT system by optical fiber to perform ATM service processing, subscriber line card processing unit connected to the subscriber side to perform ATM service processing, and operation management of ONU system Inter-node communication for performing information transfer between the operation management unit, a monitoring control unit performing real-time control of the subscriber side / PON matching side line card processing unit, and performing the hierarchy management, and an operation management unit of the OLT system and the operation management unit of the ONU system ( In the monitoring control and operation management method of the ON system comprising an INC) processing unit, Initializing the PON matching line card processing unit and the subscriber line line card processing unit and performing a hardware API function when hardware API processing is required, and performing an interrupt API function when an interrupt occurs from the subscriber side / PON matching line card processing unit. First step; A second step of analyzing the operation management message when the operation management unit receives the operation management message from the OLT system, managing information for the corresponding function, and transferring a function-specific processing message for processing the operation management message to the monitoring control unit; A third step of the monitoring control unit processing the corresponding function according to the request of the corresponding function-specific processing message transmitted in the second step and transferring the corresponding function processing result message to the operation management unit; And And a fourth step of transmitting the processing result message transmitted as the execution result of the third step to the OLT system through the INC processing unit. The method of claim 1, wherein the initialization of the first step, Receiving an initialization message from the monitoring controller; Calling the initialization related API function; And And transmitting the initialization response message to the supervisory control unit. The method of claim 1, In the first step, when the interrupt occurs, the type of the interrupt is determined to generate an interrupt report message for each function, and is transmitted to the monitoring controller. In the case of an AAL5 interrupt, the interrupt report message is generated and transmitted to the INC processor. Monitoring control and operation management method of the ON system. The method of claim 3, When the AAL5 report message is an AAL5 split message, after performing the AAL5 split function and performing a CRC 32 calculation process, an AAL5 cell is generated in the PON matching side line card processing unit, and the AAL report message is an AAL combined message. The AAL5 cell is read from the PON matching line card processing unit, the AAL5 cell is read, the CRC 32 calculation is performed, the AAL recombination is generated, and an AAL5 message is generated and transmitted to the operation management unit. And operational management methods. The method of claim 1, wherein the second step, Transmitting a failure message to the monitoring control unit if the operation management message is a failure management message; If the operation management message is a configuration management message, transmitting a configuration message to the monitoring controller; Transmitting a connection message to the monitoring control unit if the operation management message is a connection management message; And And if the operation management message is a performance management message, transmitting a performance message to the monitoring control unit. The method of claim 1, wherein the third step, Processing a fault message including a fault interrupt report message, a fault management message, a loopback message, and a PM / CC activation message; Processing a performance message including a performance interrupt report message and a performance management message; Processing a shape message including an initialization management message, a shape management message, a connection management message, and a changeover management message; And And performing initialization processing, hardware interrupt processing, and hardware API processing of the line card processing unit. The method of claim 1, The INC processing unit of the fourth step provides a dedicated communication channel for information transfer between the OLT system and the ONU system and processes the remote management function.