KR100268225B1 - Maintenance method for connection an(access network) and le(logical exchage) using v5.2 - Google Patents

Abstract

The present invention relates to a switch maintenance function, and more particularly, to a new maintenance method related to a remote subscriber and a network access device accommodated in the network access device in a structure in which the exchange and the network access device are matched using the V5.2 protocol. will be. In order to solve this problem, the present invention provides a maintenance method for matching an exchanger and a network connection device in a structure in which the exchanger and the network connection device are matched using V5.2, and the network connection device that is matched using the V5.2 from an operator. When the specific maintenance information request command is inputted, the access network processor recognizes it and sends the command to the V5.2 service control processor in the form of an IP message, and the V5.2 service control processor receives the corresponding command. Converting the V5.2 protocol into the V5.2 protocol and transmitting the V5.2 protocol to the network access device through the raw information interface unit, and receiving a maintenance-related information request command from the exchange via the V5.2 protocol. Analyzes the instructions received from the processor Collecting this information and sending it to the exchange through the connection control card according to the V5.2 protocol format; and when the maintenance related information is received from the network connection device through the raw information interface, the V5.2 service control processor. And converting the received information into an IP message and reporting it to the access network processor, and converting the reported maintenance related information into an output data format and outputting it through an output device.

Description

Maintenance method related to exchange and network connection device using V5.2

The present invention relates to a switch maintenance function, and more particularly, to a new maintenance method related to a remote subscriber and a network access device accommodated in the network access device in a structure in which the exchange and the network access device are matched using the V5.2 protocol. will be.

A matching structure for accommodating remote subscriber groups in a conventional exchange is shown in FIGS. 1 and 2. 1 and 2, a matching structure for accommodating a remote subscriber group in a conventional exchange will be described. First, FIG. 1 is a diagram illustrating a matching structure between a conventional universal digital loop carrier (UDLC) type exchange and a remote receiving subscriber group, and includes E1 / T1 or E1 / T1 to accommodate a remote subscriber group in a remote terminal 30. It is connected to local exchange 10 by wire to COT (Central Office Terminal) 20 in exchange office through fiber optic transmission line. The Remote Access Network Subsystem (RANS) of the TDX-10A or TDX-100 belongs to this structure. This structure is connected to the remote station 30 of FIG. 1 through IPC (Inter Process Communication, hereinafter referred to as 'IPC') in matching with the exchanger when the capacity is relatively large. However, the matching structure as shown in FIG. 1 has a disadvantage in that matching with other systems is impossible due to matching between the exchange and the remote station through IPC, and also matching with an access network having a smaller capacity is required.

FIG. 2 is a diagram illustrating a matching structure between a conventional Integrated Digital Loop Carrier (IDLC) type switch and a network access device accommodating a remote subscriber group, wherein the subscriber line 130 accommodated at a remote site is accommodated in a network access device (AN) 120. Alternatively, the structure directly connects to the switch 110 via a fiber optic. Proprietary Protocol or Open Protocol may be used for such a matching method. The Proprietary Protocol uses a protocol defined by each company for communication between the switch 110 and the network access device 120. This type of IDLC is called a Remote Switching Module (RSM). Among the previously developed systems are AT & T's 5Ess Switch Module and TDX-100's Remote Link Interface Module (RLIM). However, there is a disadvantage that the matching structure as shown in FIG. 2 also cannot match the remote system of the multi-vendor to the exchange.

On the other hand, the protocol defined in the international standard is used for communication between the exchange (LE) and the network access device (AN), and the remote device sets up a system that can be connected to any exchange that accepts the standard. IDLC ". The matching structure of FIG. 3 and FIG. 4 illustrates the matching between the exchange and the network connection device using the defined V5.2 protocol. This allows the exchange to match any other system using the V5.2 protocol, but to date the exchange has been able to match the exchange in a matching architecture between the exchange using the V5.2 protocol and the network access device that accommodates remote subscriber groups. There is a problem that the maintenance function for the status management for the matching other network connection device is not provided so that the other network connection device that is matched with the switch can not be managed effectively in the exchange.

Accordingly, an object of the present invention is to use the standard protocol of V5.2 defined in the international standard for communication between the switch (LE) and the network access device (AN) in order to solve the above problems, the exchange accepts matching with other systems. And by providing the maintenance function according to this, it provides the maintenance method related with the exchange and network connection device matching using V5.2 which can manage another system matched using V5.2 protocol.

In order to achieve the above object, the present invention provides a maintenance method for matching exchanges and network connection devices in a structure in which exchanges and network connection devices are matched using V5.2. When a specific maintenance information request command of an access device is input, the access network processor recognizes the command and sends the command to the V5.2 service control processor in the form of an IP message, and the V5.2 service control processor receives the command. Converting the command into a V5.2 protocol format and sending the command to the network access device via the V5.2 protocol through the raw information interface unit, and receiving a maintenance-related information request command from the exchange via the V5.2 protocol. Commands received from the control processor Collecting the relevant information and sending it to the exchange through the connection control card according to the V5.2 protocol format, and when the maintenance related information is received from the network access device through the raw information interface, the V5.2 service control. And converting the received information detected by the processor into an IP message and reporting it to the access network processor, and converting the reported maintenance related information into an output data format and outputting it through an output device. .

1 is a diagram illustrating a matching structure between a conventional UDLC type switch and a remote receiving subscriber group.

2 is a diagram illustrating a matching structure between a conventional IDLC type switch and a network access device accommodating a remote subscriber group;

3 is a diagram illustrating a matching structure between an exchange using a V5.2 protocol and a network access device accommodating a remote subscriber group according to the present invention.

4 is a detailed internal structure diagram of an exchanger in the V5.2 scheme of FIG.

5 is a flow chart of maintenance related to the exchange and network connection device matching using V5.2 according to a preferred embodiment of the present invention.

6 is a flowchart illustrating maintenance information processing between a switch and a network connection device in a VSDP according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention, such as specific processing flows. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

The structure applied to the present invention is a view showing a matching structure between a switch using a V5.2 protocol according to the present invention shown in FIG. 3 and a network access device accommodating a remote subscriber group as shown in FIG. 3 is the detailed internal structure diagram of the exchanger. When explaining the matching structure between the switch using the V5.2 protocol applied to the present invention and the network access device that accommodates the remote subscriber group through this;

In order to perform a maintenance function for the state management of the network access unit (AN) 300 in the switch (LE) 200 to accommodate a subscriber group of a remote location using the V5.2 protocol according to the present invention, the exchange 200 is an upper application block. ANP (Access Network Processor) 213, VSDP (V5.2 Service Device Processor) 212, and PRIC (Primary Rate Interface Card) 211. The network access device 300 includes a connection control card 311, an interface unit (I / F) 313 for accommodating a subscriber group 320, and a control processor 312.

At the exchanger 200; The ANP 213 has various upper application functions, performs a corresponding action on a message delivered in the form of an IPC message, and can manage the state of the network access device 300 matched using the V5.2 protocol according to the present invention. If a maintenance related command is received from an operator and a maintenance related command is processed, or maintenance information related to the network access device 300 is reported from a V5.2 service device processor (VSDP) 212, it is processed and managed. The VSDP 212 is responsible for matching between the switch 200 and the network access device 300 using the V5.2 protocol, and monitors and controls the state of the PRIC 211 board. The PRIC (Primary Rate Interface Card) 211 is a board that substantially matches the connection control card 311 of the network access device 300.

Meanwhile; The network connection device 300 matched with the exchange using the V5.2 protocol;

The connection control card 311 is matched with PRIC 211 of the exchange. The control processor 312 controls the overall operation of the network connection device 300, and when a maintenance-related command is input from the switch 200 to control to perform the corresponding function. The I / F 313 accommodates the remote subscriber group 320 and performs call connection and subscriber isolation / release to the subscriber under the control of the control processor 312.

Referring to FIG. 4, the structure of the switch according to the present invention will be described in detail. As described above, the switch 200, which is a remote subscriber receiving device using the V5.2 protocol, performs PRIC 211 and layer 3 that perform functions corresponding to layer 2, as described above. VSDP 212 performing a function corresponding to the ADP 213 performing a function corresponding to the upper application.

The PRIC (hereinafter, referred to as a "raw information interface unit") 211 corresponding to the layer 2 is three sub-layers (envelope unit 214, mapping unit 215, data link unit 216) and ISDN service that perform sublayer functions again. It consists of a laby processing unit 217 for processing the incoming LAP-D protocol. The envelope unit (LAPV-EF) 214 removes the start flag and the end flag for the LAPV5 message coming from the network matching device (AN) 300, checks the FCS, and transfers the FCS to the mapping unit 215. The mapping unit (LAPV-mapping) 215 checks the data link address and the control information in the message transmitted from the envelope unit 214, and then stores the remaining portion (LAPV-DL portion) except for the envelope address portion. If it is an ISD service, it delivers it to the RAP D processor 217. The data link unit 216 checks the data link information in the message transmitted from the mapping unit 215, and the remainder except for the data link address field and the control field is referred to as the VSDP (hereinafter referred to as a "V5.2 service control processor"). Pass to the appropriate entity in the (subprotocol). Meanwhile, the laby processing unit 217 transfers the remaining portion except for the data link address field and the control field from the message transmitted from the mapping unit 215 to the Q, 931 protocol processing unit 219 of the V5.2 service control processor 212.

Next, the V5.2 service control processor 212 includes five upper functional entities defined in the international standard (BBC 218-1: Bearer channel connection control, PSIN 218-2, CONTROL 218-3, LINK CONTROL 218-4, PROTECTION). 218-5), a Q.931 processing unit 219 for processing a message for a Rapdi protocol delivered in Layer 2, and a message delivered to the ANP (hereinafter referred to as an "access network processor") 213 as an IPC message. IPC converter 220 for converting the form. Herein, the functions of the entities will be briefly described. The BCC 218-1 performs channel assignment and the like, and the PSIN 218-2 processes each PSIN subscriber port state (eg, a hook on / off state). The CONTROL 218-3 recognizes an ID of each network access device, processes a message related to start-up, and the link control 218-4 is a frame for an E1 link. Control information such as allocation, multi-frame allocation, alarm detection, and the PROTECTION 218-5 processes information for protecting and switching only C channel information in case of an E1 link failure. The Q.931 processing unit 219 processes the message transmitted from the wrapdy processing unit 217 of the layer 2 to take a corresponding action, or if necessary, transfers the message to the access network processor 213 via the IPC conversion unit 220. In addition, the IPC conversion unit 220 converts the messages processed by the entities 218-1 to 218-5 and the Q.931 processing unit 219 of the V5.2 service control processor 212 into an IPC message. It converts the data to the access network processor 213.

Finally, the access network processor 213 has various higher application functions and performs a corresponding action on a message delivered in the form of an IPC message through the IPC converter 220 of the layer 2. That is, the lower layer is controlled to determine the status of the subscriber from the message or to generate a corresponding message frame when a reverse action is required.

5 and 6 illustrate a maintenance method related to the exchange and network connection device using V5.2 as described above. FIG. 5 illustrates a process of maintenance related to exchange and network connection device matching using V5.2 according to a preferred embodiment of the present invention, and FIG. 6 is a switch and network connection device in a VSDP according to an embodiment of the present invention. It shows the process of maintenance information.

The maintenance function added to the exchange 200 according to the present invention is as follows.

1.Isolation and release function by subscriber request for subscriber 320 accommodated in the network access device 300

2. Status output function by operator's request for the received subscriber 320

3. A block / unblock function for a link that matches the switch 200 and the network access device 300 using V5.2.

4. PROTECTION SWITCHING function for link failure that confirms normal switching to another link when the LOGICAL communication channel causes a failure for any network access device.

5. Link failure notification function that causes a failure for the normally operated link so that the operator is notified of the status of the failure.

6. Interruption and restart function by operator's request

7. Confirmation of interruption and restart by operator request

8. Provision data change function that converts the status of the number of links, communication channels, etc. and checks whether the changed status is reflected and whether the changed contents are reflected after restarting.

9. Ability to output status information of link, channel, interface and output interface connection

A process of performing the various maintenance-related functions described above will be described with reference to the above-described process flow charts of FIGS. 5 to 6.

In FIG. 5; The access network processor 213 recognizes a specific maintenance related command input from the various maintenance related functions of the specific network access device matched using the V5.2 from the operator, and recognizes the specific maintenance related command in the form of an INP message. The maintenance control command is requested to the service control processor 212 (step 501).

Then, the V5.2 service control processor 212 converts the IPC message from the access network processor 213 into the V5.2 protocol format and sends it to the source information interface unit 211 (step 503).

After receiving the maintenance-related command from the V5.2 service control processor 212, the source information interface unit 211 sends the command to the connection control card 311 of the network access device 300 requested by the V5.2 protocol (step 505).

The control processor 312 of the network connection device 300 receives the received data after collecting the information by analyzing the maintenance-related command input through the connection control card 311 and collecting the required maintenance information. 2 Send to exchange 200 according to protocol type. For example, if a status output for the subscriber group 320 received from the exchange 200 is requested, the control processor 312 collects the status information of the received subscriber group 320 through the interface unit 313 and collects the received subscriber group to send to the exchange 200. According to the V5.2 protocol, the status information of 320 is controlled to be transmitted to the source information interface unit 211 of the exchange via the connection control card 311 (step 507).

Upon receiving maintenance related information from the network access device 300, the source information interface unit 211 transmits this information to the V5.2 service control processor 212 (step 509).

Then, the V5.2 service control processor 212 converts the maintenance related information received from the network access device 300 into an INP message and reports it to a higher level (access network processor 213) (step 511).

Finally, the access network processor 213 converts the reported maintenance related information into an output data format and outputs it through an output device (not shown) so that an operator can check it (step 513).

The access network processor 213 of the exchange controls to collect and output the corresponding information in the same manner as described above when a specific maintenance information output of the network access device matched to the exchange is required from the operator.

As shown in FIG. 5, maintenance-related information may be periodically reported from the network access device 300 matched to the switch 200 in a V5.2 manner without depending on an operator's request. 6 is shown. This will be described with reference to FIG. 6;

FIG. 6 illustrates a process of processing maintenance information between an exchange and a network access device in the V5.2 service control processor (VSDP) 212. The V5.2 service control processor (VSDP) 212 performs the raw information in step 611. The board state of the interface unit (PRIC) 211 is monitored and the control board, link, network connection device receiving subscriber, network connection device state, and the like from the network connection device 300 matched with the raw information interface unit 211 and V5.2. If it detects the reception of maintenance related information such as an interface error status, the flow proceeds to step 603. In step 603, the V5.2 service control processor (VSDP) 212 proceeds to step 605 if there is information to be reported to a higher level (access network processor: ANP 213) among the information received through the source information interface unit 211. If not, the function returns to step 601 after processing. In step 605, the V5.2 service control processor (VSDP) 212 reports an upper level of an INP message to send the corresponding maintenance related information to a higher level.

The V5.2 service control processor (VSDP) 212 continuously repeats steps 601 to 605.

In the same way as described above, the operator may request maintenance information related to the switch and network connection device when the switch and network connection device are matched using V5.2, or check maintenance information reported periodically from the network connection device.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, according to the present invention, when the exchange and the network connection device are matched using V5.2, the maintenance information related thereto is required when necessary, and the corresponding information is collected from the network connection device or periodically output from the network connection device. By outputting the maintenance information reported by the operator, the operator can effectively manage the network access devices that are matched.

Claims (3)

An access network processor that handles maintenance-related commands for managing the status of a network access device that is matched using the V5.2 protocol, and is in charge of matching using the V5.2 protocol between the switch and the network access point. A V5.2 service control processor for monitoring and controlling a board state, a switch having a raw information interface unit for performing an operation of matching with the network connection device, a connection control card matching with a raw information interface unit of the switch, and When a maintenance-related command is input from the exchange, a control processor for controlling the corresponding function execution and a remote subscriber group are accommodated, and a call connection and subscriber isolation / release to the subscriber are performed by the control processor. Network connection device equipped with interface unit is determined using V5.2. In the exchange the network access server matching method in the related maintenance structure in which, When a specific maintenance information request command of the network access device matched using the V5.2 is input from the operator, the access network processor recognizes the command and sends the command to the V5.2 service control processor in the form of an IP message. and, Converting the received command from the V5.2 service control processor into a V5.2 protocol format and transmitting the V2 protocol to the network access device using the V5.2 protocol through the raw information interface unit; When the maintenance-related information request command is received from the switch in the V5.2 protocol, the command received from the control processor of the network access device is analyzed, the corresponding information is collected, and the switch is connected to the V5.2 protocol according to the V5.2 protocol format. Sending out to When the maintenance related information is received from the network access device through the raw information interface, converting the received information from the V5.2 service control processor into an IP message, and reporting the received IP message to the access network processor; The maintenance method according to the exchange and network connection device matching using V 5.2, characterized in that the process of converting the reported maintenance-related information into an output data format and then output through the output device. The method of claim 1, The maintenance related information; Isolation and release function according to an operator's request for subscribers accommodated in the network access device; A status output function by an operator's request for the accepted subscriber; A block / unblock function for a link that matches an exchange and a network connection device using the V5.2; A protection switching function for a link failure that confirms that a normal transfer is made to another link when the logical communication channel causes a failure for any network access device; A link failure notification function that causes a failure for a normally operated link so that an operator is notified of the status of the failure; Stop and restart function according to the operator's request, Stop and restart confirmation function according to the operator's request, Provision data change function that converts the state of the number of links, communication channels, etc., and checks whether the changed state is reflected, and whether the changed contents are reflected after restarting; A maintenance method related to switching between a switch and a network connection device using V5.2, comprising information on a function of outputting link, channel and interface status information and outputting an interface connection. The method of claim 2, The access network processor may further include a process of receiving specific maintenance information, which is periodically collected by the network access device and sent to the V5.2 protocol, through the V5.2 service control processor and outputting the same to the output device. Maintenance method related to the exchange and network connection device using V5.2.