KR100453810B1 - Apparatus and method for controlling low speed ATM PVC point to point connection in the open ATM switching system - Google Patents

Abstract

The present invention relates to an apparatus and method for controlling a low speed ATM PVC point-to-point connection, wherein the low speed ATM PVC point-to-point connection control device for an open ATM switching system includes an access multi-function that performs a low speed ATM subscriber matching function and a frame relay interworking function. Flex modules; An access multiplex controller for controlling the operation of the access multiplex module to interlock control the low speed ATM PVC connection control and the frame relay and the ATM PVC connection; An ATM interface module for performing a high speed or medium speed ATM subscriber matching function; An ATM call controller for controlling the operation of the ATM interface module to control the high speed or medium speed ATM PVC connection; And a workstation module for controlling input and output functions of HMI commands used to perform the low speed ATM PVC connection control function.

Description

Application and method for controlling low speed ATM PVC point to point connection in the open ATM switching system

The present invention relates to an ATM switching system, and more particularly, to an apparatus and method for controlling a low speed ATM PVC point-to-point connection.

The ATM Permanent Virtual Circuit (PVC) connection control method supported by the conventional Asynchronous Transfer Mode (ATM) exchange includes an ATM in which an operator has a physical shape (for example, a processor number, an interface module number, and a link number) in the ATM switch. When you enter a Human Machine Interface (HMI) command for PVC connections, the ATM PVC Connection Control Block, which operates inside the ATM switch, manages the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) resource management blocks and switch resource management. The ATM PVC connection is made by providing the block with ATM PVC connection information. In other words, all ATM PVC connections are controlled in the ATM switch.

However, this method changes the shape of the ATM switch, or because the same physical shape does not apply to the different types of ATM switch types, each time a new one is adapted to the system. It has a problem of poor reusability.

In addition, since both the connection control process and the switch control process are performed in the ATM switch system, the ATM switch system not only takes a long time to manufacture, but also has an inefficient method in its manufacturing method.

In order to solve this problem, an open ATM switching system has been developed to provide multiservice by independently configuring connection control processing and switch control according to an open communication network control structure. However, such an open ATM switching system provides an interface for high speed (STM-4C, STM1) and medium speed (DS3), but does not provide an interface for low speed (T1, DS1). In other words, the existing open ATM switch provides an ATM PVC connection control method for the high speed / middle speed interface, but does not provide a low speed PVC connection function that provides a low speed interface to which most general subscribers are connected.

The technical problem to be solved by the present invention is that in an open ATM switching system connected with an access multiplexer (AM) module providing a low speed interface, the same HMI command without separately configuring the existing high speed / middle ATM PVC connection and the low speed ATM PVC connection A low speed ATM PVC connection control device and method for connecting low speed subscribers are provided.

1 is a block diagram of an open ATM switch system in accordance with a preferred embodiment of the present invention.

2 is a view for explaining the configuration and flow of messages between the related blocks for performing a low-speed ATM PVC point-to-point connection function implemented on an open ATM switch according to the present invention.

3A to 3D illustrate a structure of a database for performing a low speed ATM PVC point-to-point connection function according to the present invention.

4A through 4F are detailed flowcharts illustrating a low speed ATM PVC point-to-point connection method implemented on an open ATM switch according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: Workstation Module (WSM) 20: Main Processor Module (MPM)

30: ATM Interface Module (AIM) 40: Access Multiplex Module (AMM)

50: Media Gateway Module (MGM) 60: Switch Fabric Module (SFM)

100: open ATM switching system

In order to achieve the above object, a low speed AMT PMC point-to-point connection control device for an open ATM switching system according to the present invention,

An access multiplex module for performing a low speed ATM subscriber matching function and a frame relay interworking function; An access multiplex controller for controlling the operation of the access multiplex module to interlock control the low speed ATM PVC connection control and the frame relay and the ATM PVC connection; An ATM interface module for performing a high speed or medium speed ATM subscriber matching function; An ATM call controller for controlling the operation of the ATM interface module to control the high speed or medium speed ATM PVC connection; And a workstation module for controlling an input and an output function of an HMI command used to perform the low speed ATM PVC connection control function.

In order to achieve the above object, a low speed ATM PMB point-to-point connection control method for an open ATM exchange system according to the present invention,

(a) checking for errors in parameter information of HMI commands received from an operator; (b) assigning a calling party VPI and VCI if there is no error as a result of the checking in step (a); (c) determining whether the called party performs the low speed interface; (d) allocating the called party's VPI and VCI resources through the access multiplex controller when the called party performs the low speed interface as a result of the determination in step (c); (e) allocating the called party's VPI and VCI resources through the ATM call controller when the called party performs the high speed or medium speed interface as a result of the determination in step (c); (f) determining a calling party universal switch operating protocol label and a called party universal switch operating protocol label, respectively; (g) extracting a universal switch operating protocol port number corresponding to the universal switch operating protocol label determined in step (f); (h) requesting an ATM PVC connection of the switching system body; (i) requesting a low speed ATM PVC connection to the access multiplexer; And (j) storing the calling side connection information in the high speed and medium speed PVC connection information relations and the low speed PVC connection information relations.

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

1 is a block diagram of an open ATM switch system 100 in accordance with a preferred embodiment of the present invention. The open ATM switching system 100 includes a workstation module (WSM) 10, a main processor module (MPM) 20, an ATM interface module (AIM) 30, and access. An Access Multiplex Module (AMM) 40, a Media Gateway Module (MGM) 50, and a Switch Fabric Module (SMF) 60.

The workstation module (WSM) 10 includes an HMI subsystem 11, a TMN agent (Telecommunication Management Network Agent) 13, and a workstation point to point connection control function block (15, hereinafter). WSPPCCF block). The workstation module 10 receives an operator matching function that provides an interface between the operator and the middleware client, and HMI commands input to the operator and the TMN agent 13 to form a main processor module 20. Function to call middleware server.

The WSPPCCF block 15 checks whether the received HMI commands and parameters are entered according to the input command format, and then checks the error of the parameter information of the HMI command, and if there is no error, the parameter information and the low speed ATM PVC of the input HMI command. Call the middleware procedure with additional information needed to perform the connection control function.

The main processor module 20 includes an ATM call controller (ACC) 21, an access multiplex controller (AMC) 23, a switch management controller (SMC) 25, And processors such as a Media Gateway Controller (MGC) 27. The ATM call controller 21 and the access multiplex controller 23 not only act as a middleware server for processing ATM PVC connection function called from the operator client, but also serve as a middleware client for functioning the destination PVC connection. do. Among these, ATM call controller 21 controls the high speed / medium speed ATM PVC connection. The access multiplex controller 23 controls the low speed ATM PVC connection and interlocks the frame relay and the ATM PVC connection. In addition, a universal switch is configured to manage user network interface (UN) and network to network interface or node to node interface (NNI) resources, and ATM PVC connection information generated from the switch operation controller 25 for ATM PVC connection. It performs the function of delivering using the General Switch Management Protocol (GSMP), and processes the PVC billing. Here, GSMP is used to manage call setup, tear-down, and call status while controlling the ATM switch engine.

The switch operation controller (SMC) 25 performs the operation and maintenance functions of the ATM switch. And, it processes the ATM PVC connection information delivered by the General Purpose Switch Operation Protocol (GSMP), and delivers it to the ATM interface module 30 using internal IPC (Intrinsic Persistence Checking).

The ATM interface module (AIM) 30 performs a fast / medium speed ATM subscriber matching function, and the access multiplex module (AMM) 40 performs a low speed ATM subscriber matching function and a frame relay interworking function.

The media gateway module (MGM) 50 performs a circuit registration function such as a Circuit Emulation (CE) subscriber, an N-Integrated Services Digital Network (N-ISDN) subscriber, and an ATM Adaptation Layer 2 (AAL2) subscriber.

The functions of the blocks needed for low-speed ATM PVC point-to-point connection are as follows. First, the WSPPCCF block 15 located in the workstation module 10 corresponds to the middleware client. The WSPPCCF block 15 receives an HMI command transmitted through the HMI subsystem 11 or the TMN agent 13, performs a function of checking an error in the command format and command parameter information, and inputs an HMI command. It performs the function of delivering and outputting the result of the execution for the TMN agent 13.

The PVC Point to Point Connection Control Function block (231, hereinafter referred to as PPCCF block) located in the access multiplex controller (AMC) 23 is the ATM PVC point to point requested from the WSPPCCF block 15. The middleware server functions to perform a connection function and a function of extracting a GSMP port necessary for controlling the switch from the switch operation controller 25. In addition, in order to request allocation of UNI and NNI resources (ie, VPI / VCI) corresponding to the GSMP label, the VPI / VCI connected between the switching system body and the access multiplexer module 40, the access multiplexer module 40, In order to equalize the VPI / VCI connected between subscribers, the ATM call controller 21 is connected to the ATM call controller 21 through a library data handling function block 212 (hereinafter referred to as LIDHF block) located in the ATM call controller 21. Requests allocation of VPI / VCI to a Connection Resource Control Function block (213, hereinafter referred to as CRCF block) located, and access Vx / VCI with VPI / VCI assigned by ATM call controller 21 23) performs a function of requesting allocation to the same VPI / VCI to the Connection Resource Control Function (CRCF) block 232 located at 23). The logical port number of the called party is analyzed from the received HMI command parameters to determine whether the connection is a high speed / medium speed PVC connection or a low speed PVC connection. As a result of the determination, the middleware server located in the access point multiplexing controller (PPCCF) block 211 is a PPCCF (PVCCF) block 211 located in the ATM call controller 21 processor in case of high speed and medium speed. The PPCCF block, which is a block, requires processing of the destination ATM PVC connection.

An ATM Interface Module Control Function (AIMCF) block 31 located in the ATM interface module 30 performs high speed, medium speed ATM UNI and NNI subscriber matching functions.

An Access Multiplex Control Function (AMCF) block 41a located in the access multiplex module 40 performs low speed ATM UNI and NNI subscriber matching functions.

The CRCF (Connection Resource Control Function) block 232 located in the access multiplex controller 23 is a block that manages UNI and NNI link resources of the access multiplex module 40 and the exchange body, and is a GMMPF (GSMP Master Protocol Handling Function). ) Block 214 delivers a GSMP protocol message to a GSMP Slave Protocol Handling Function (GSPHF) block 251 located at switch operation controller 25 using a General Purpose Switch Operation Protocol (GSMP) for ATM PVC point-to-point connection. It is a block. The GSPHF block 251 decodes the GSMP protocol message received from the GMPHF block 214 and transfers the connection information to the ATM interface module 30 according to the decoded information, and the result of performing the ATM PVC connection with the GSMP protocol message. Coding to match the GMPHF block 214 to perform the function.

The PVC Charging Data Generation Function Block (PCGF) block 215 receives the PVC charging information received from the PPCCF block 231, generates a PVC charging record, and performs a PVC charging function. The LIDHF block 212 performs resource allocation and release functions required by the PPCCF 231 located in the access multiplex controller 23.

On the other hand, the low speed ATM PVC connection control function described above is performed using HMI commands. The configuration of the low-speed ATM PVC connection control HMI commands consists of the logical port number of the calling party, the calling party VPI, the calling party VCI, the calling party logical port number, the calling party VPI, the calling party VCI, and a VP or VC connection. Shape, connection direction indicating one-way and two-way, forward traffic parameter combination and forward traffic parameter band, forward cell delay variation tolerance, reverse traffic parameter combination and reverse traffic parameter band, reverse cell delay delay tolerance (CDVT) parameters It consists of In addition, the logical port number is composed of an access multiplex number, a LINK number, an AMC number, and an index number when the access multiplex module (AMM) 40 provides a low speed interface, and provides a high speed and low speed interface. In case of the ATM interface module of the main body, it consists of ATM interface module number, LINK number, ATM call controller number, and index number. This logical port number is used later to extract the GSMP port number needed for a low-speed ATM PVC connection.

2 is a view for explaining the configuration and flow of messages between the related blocks for performing a low-speed ATM PVC point-to-point connection function implemented on an open ATM switch according to the present invention.

Referring to FIG. 2, when an operator or TMN agent 13 inputs an HMI command for registering a low speed ATM PVC connection, the input HMI command and parameters are transmitted to the WSPPCCF block 15, which is a middleware client that performs the HMI command. do. The WSPPCCF block 15 checks whether the received HMI commands and parameters are input in accordance with the command format, and then checks for errors in the parameter information of the HMI commands. As a result of the check, if there is no error, the middleware pro is sent to the calling party PPCCF block 231a, which is a middleware server located in the access multiplex controller 23, with the parameter information of the input HMI command and additional information necessary to perform the low speed ATM PVC connection control function. Call the procedure to pass the low speed ATM PVC connection information.

The originating PPCCF block 231a located in the access multiplex controller 23 is first configured for the resource allocation of the originating virtual path identifier (VPI) and the virtual channel identifier (VCI) corresponding to the originating GSMP label. The originating VPI and VCI resource allocation request message is forwarded to the LIDHF block 212 located at 21. When the originating VPI and VCI resource allocation request message is delivered, the LIDHF block 212 requests the VCF and VCI resource allocation from the CRCF block 213 located in the ATM call controller 21, and the resource from the CRCF block 213. When the allocation is made, the allocated VPI and VCI resources are delivered to the called party PPCCF block 231b located in the access multiplex controller 23.

The PPCCF block 231a located in the access multiplex controller 23 requests the CRCF block 232a to allocate VPI and VCI resources with the VPI and VCI received from the LIDHF block 212. CRCF block 232a allocates resources to the requested VPI and VCI.

Then, the calling party PPCCF block 231a located in the access multiplex controller 23 receives the called party PPCCF block 211, which is a middleware server located in the ATM call controller 21, when the called party is a high speed / medium speed interface. Called through the middleware procedure. In the case of the low speed interface, the called party PPCCF block 231b located in the access multiplex controller 23 is called through the middleware procedure.

First, the destination PPCCF block 211 for fast / medium speed requests the VCF and VCI resource allocation to the CRCF block 213 for the destination VPI and VCI resource allocation. Subsequently, when resources are allocated from the CRCF block 213, the called party connection information is stored in the R_SPC_INF relation (see FIG. 3A), which is one of the relations constituting the database, and the calling party PPCCF block located in the access multiplex controller 23 is stored. It returns to 231a with the result of the execution.

On the other hand, the destination PPCCF block 231b for low speed delivers the destination VPI and VCI resource allocation request message to the LIDHF block 212 located in the ATM call controller 21. The LIDHF block 212 accepting the message requests the CRCF block 213 located in the ATM call controller 21 to allocate the VPI and VCI resources, and when the resource is allocated from the CRCF block 213, the allocated VPI and VCI are allocated. The resource is delivered to the called party PPCCF block 231b located in the access multiplex controller 23. The called party PPCCF block 231b requests the called party VPI and VCI resource allocation to the CRCF block 232b located in the same access multiplex controller 23 with the VPI and VCI received from the LIDHF block 212. CRCF block 232b allocates resources to the requested VPI and VCI. A low speed ATM PVC connection is requested to the AMCF block 41b located at the called party access multiplex module (AMM) 40b.

The AMCF block 41b completes the ATM PVC connection and then transfers the result to the called party PPCCF block 231b. The called party PPCCF block 231b stores the incoming connection information of the switching system body in the R_SPC_INF relation (see FIG. 3A) located in the ATM call controller 21, and stores the low-speed incoming connection information in the R_AMSPC_INF located in the access multiplex controller 23. It stores the relation (see FIG. 3C) and then returns to the originating PPCCF block 231a located in the access multiplex controller 23 with the result of its execution.

The calling party PPCCF block 231a determines the calling party VPI and VCI and the called party VPI and VCI as the calling party label and the called party label of the GSMP. The corresponding originating GSMP port number is extracted from the logical port number which is the connection shape information connecting the originating access multiplex module (AMM) 40a and the ATM interface module 30 of the switching system main body. At this time, when the called party is the high speed / intermediate speed interface, the corresponding called party GSMP port number is extracted from the logical port number of the called ATM interface module 30, and in the case of the low speed interface, it is connected to the called party AM. The corresponding destination GSMP port number is extracted from the logical port number connecting the ATM interface module 30 of the switching system main body. The GMPHF block 214 then asks the ATM PVC connection of the switching system body with the traffic parameters and band information. Receiving the ATM PVC connection information, GMPHF block 214 transfers the GSMP protocol message to GSPHF block 251 using IPC. The GSPHF block 251 transfers the received ATM PVC connection information to a GSMP Slave Connection Control Function Block (GSCCF) block 252. If GSCCF block 252 sends ATM PVC connection information to AIMCF block 31 to establish an ATM PVC connection, AIMCF block 31 causes the ATM PVC connection to be established substantially. When the AIMCF block 31 completes the ATM PVC connection, the result of the execution is sent to the GSCCF block 252, and the GSCCF block 252 transfers the result of the execution to the GSPHF block 251, and the GSPHF block 251. Transfers the execution result to the GMPHF block 251.

GMPHF block 251 then delivers the results to the calling PPCCF block 231a. The originating PPCCF block 231a transmits the execution result to the AMCF block 41a using the IPC message for the low speed ATM PVC connection, and the AMCF block 41a receiving the execution result transmits the execution result to the originating PPCCF block 231a. To pass. The originating side PPCCF block 231a which has received the result of the execution stores the originating side connection information of the switching system body in the R_SPC_INF relation located in the ATM call controller 21, and stores the slow originating side connection information in the access multiplex controller 23. Store it in the R_AMSPC_INF relation at. Then, the charging information is transmitted to the PCGF block 215 located in the ATM call controller 21, and then returned to the WSPPCCF block 15 with the execution result. The WSPPCCF block 15 delivers the returned performance result to the TMN agent 13 and outputs it to the operator terminal.

3A to 3D are structural diagrams of a database for performing a low speed ATM PVC point-to-point connection function according to the present invention. Referring to FIG. 3, the database for the low speed ATM PVC connection may include a R_SPC_INF relation 91 and an R_UDR_TERM_INF relation 93 and an access multiplex module (AMM; 40a, 40b) that store ATM PVC connection information in a switching system body. It consists of an R_AMSPC_INF relation 95 and an R_AMUDR_TERM_INF relation 97 that store ATM PVC connection information. An R_SPC_INF relation 91 and an R_UDR_TERM_INF relation 93 are stored in a database 219 located in the ATM call controller 21 shown in FIG. 2, and each of the databases 239a and 239b located in the access multiplex controller 23 is stored in the database 219. The R_AMSPC_INF relation 95 and R_AMUDR_TERM_INF relation 97 are stored.

Outgoing ATM PVC connection information is stored in the R_SPC_INF relation 91 in the database. At this time, the destination ATM PVC connection information is stored in the R_UDR_TERM_INF relation 93 when the value of the CONN_DIR attribute among the attributes of the relation is one-way (FWD, BWD), and in the case of the two-way (BOTH), the R_SPC_INF relation (91). Are stored in.

The R_SPC_INF relation 91 is a database for storing ATM PVC connection information of two-way destinations, whose attribute values of the calling party and CONN_DIR are bidirectional. The R_SPC_INF relation 91 is an IN_LPORT as an originating logical port number, an IN_VPI as an originating VPI / VCI, an IN_VCI, an OUT_LPORT as a called logical port number, an OUT_VPI as an called side VPI / VCI, an OUT_VCI, and a virtual channel as a connection type. CONN_TYPE that distinguishes the connection between Channel; VC) and Virtual Path; VP; CONN_DIR representing forward (FWD), backward (Backward; BWD), and bidirectional (Both; BOTH) as the connection direction, and forward traffic combination FWD_COMB, Forward Peak Cell Rate (PCR), Sustainable Cell Rate (SCR), Maximum Burst Size (MBS), FWD_PCR, FWD_SCR, FWD_MBS, FWD_CDVT, Representing Cell Delay Variation Tolerance (CDVT) BWD_COMB indicating combination, BWD_PCR, BWD_SCR, BWD_PCR, BWD_SCR, BWD_MBS, BWD_CDVT indicating a combination, ORIG_FLAG indicating whether it is calling party connection information or called party connection information, CONN_ST and UPC (Usage Param indicating connection status and UPC_ACT indicating activation and deactivation status of eter Control; and SHAP_ACT indicating activation and deactivation of SHAPER.

The R_UDR_TERM_INF relation 93 is a database that stores ATM PVC connection information in which the attribute value of CONN_DIR is one-way. The R_UDR_TERM_INF relation 93 is an incoming logical port number IN_LPORT, an incoming VPI / VCI IN_VPI, IN_VCI, an outgoing logical port number OUT_LPORT, an outgoing VPI / VCI OUT_VPI, OUT_VCI, and a connection type VC, VP CONN_TYPE to distinguish the connection, CONN_DIR indicating the FWD, BWD, BOTH direction as the connection direction, BWD_COMB indicating the reverse traffic combination, BWD_PCR indicating the reverse PCR, SCR, MBS, CDVT, CONN_STV indicating the status of the connection , UPC_ACT indicating activation and deactivation of UPC, and SHAP_ACT indicating activation and deactivation of SHAPER.

The R_AMSPC_INF relation 95 is a database that stores the low-speed destination side PVC PVC connection information of which the attribute values of the low-speed source side and CONN_DIR are bidirectional. The R_AMSPC_INF relation 95 is configured by adding logical port numbers, namely, ACC_LOPORT, ACC_VPI and ACC_VCI, which are connection information between the AM and the switching system body, to the configuration information of the R_SPC_INF relation 91 described above.

The R_AMUDR_TERM_INF relation 97 is a database that stores low-speed ATM PVC connection information in which the attribute value of CONN_DIR is one-way. The R_AMUDR_TERM_INF relation 97 is configured by adding logical port numbers, namely, ACC_LOPORT, ACC_VPI and ACC_VCI, which are connection information between the AM and the exchange system body, to the configuration information of the R_UDR_TERM_INF relation 93 described above.

4A-4F are detailed flow charts illustrating a low speed ATM PVC point-to-point connection method implemented on an open ATM switch in accordance with the present invention.

First, referring to FIG. 4A, the WSPPCCF block 15, which is a middleware client, receives a low-speed ATM PVC connection registration HMI command and parameters input from an operator or a TMN agent 13 (step 101). The WSPPCCF block 15 checks the error of the parameter information of the received HMI instruction (step 102), and determines whether there is an error (step 103).

As a result of the determination, if there is an error, the error result is transmitted to the TMN agent 13 (step 104), and the TMN agent 13 outputs the error result to the operator terminal (step 105).

As a result of the determination, if there is no error, the WSPPCCF block 15 has the parameter information of the input HMI command and additional information necessary to perform the low speed ATM PVC connection control function, and the originating PPCCF block which is a middleware server located in the access multiplex controller 23. The middleware procedure is called at 231a to transmit the low speed ATM PVC connection information (step 106).

The originating VPI and VCI resource allocation request message is then forwarded to the LIDHF block 212 located in the ATM call controller 21 for allocation of the originating VPI and VCI resources corresponding to the originating GSMP label (step 108). Upon receiving the VPI and VCI Resource Allocation Request message, the LIDHF block 212 requests the VCF and VCI resource allocation from the CRCF block 213 located in the ATM call controller 21 (step 110). After receiving the VPI and VCI resource allocation request, the CRCF block 213 performs the VPI and VCI resource allocation (step 112), passes the execution result including the VPI and VCI allocated to the LIDHF block 212 (step 113). Proceed to Step A.

4B, the LIDHF block 212 that has received the execution result from the CRCF block 213 transfers the execution result to the calling party PPCCF block 231a located in the access multiplex controller 23 ( Step 115). The PPCCF block 231a located in the access multiplex controller 23 has the VPI and VCI in the execution result received from the LIDHF block 212, and the VPI and the CRCF block 232a located in the same access multiplex controller 23 to the CRCF block 232a. Request VCI resource allocation (step 117). Receiving the VPI and VCI resource allocation request, the CRCF block 232a allocates resources to the requested VPI and VCI (step 119) and places the results of the execution including the assigned VPI and VCI in the access multiplex controller 23. It passes to the calling PPCCF block 231a (step 120).

Upon receiving the execution result from the CRCF block 232a, the calling party PPCCF block 231a determines whether the called party performs the low speed interface (step 122). As a result of the determination, when the called party performs the high speed or medium speed interface, the process proceeds to step B. When performing the low speed interface, the called party connection information is sent to the called party PPCCF block 231b located in the access multiplex controller 23. Transfer (step 132), and proceed to step C.

Subsequently, an operation when the called party performs the high speed or medium speed interface will be described with reference to FIG. 4C.

First, when the called party is a high speed or medium speed interface, the calling party PPCCF block 231a transmits the called party connection information to the called party PPCCF block 211 which is a middleware server located in the ATM call controller 21 (step 123). The called party PPCCF block 211 then requests the VCF and VCI resource allocation from the CRCF block 213 to allocate the called party VPI and VCI resources (step 125). Upon receiving the VPI and VCI resource allocation request, the CRCF block 213 allocates the VPI and VCI resources (step 127), and transmits the result to the called party's PPCCF block 211 (step 128). The destination side PPCCF block 211 which has received the execution result from the CRCF block 213 stores the destination side connection information in the R_SPC_INF relation 91. With the result of the execution, the process returns to the calling party PPCCF block 231a located in the access multiplex controller 23 (step 131) and proceeds to step D.

Subsequently, an operation when the called party performs the low speed interface will be described with reference to FIG. 4D.

First, when the called party PPCCF block 232b receives the called party connection information for the low speed interface, the called party VPI and the VCI resource allocation request message are transmitted to the LIDHF block 212 located in the ATM call controller 21 (134). step). When the destination VPI and VCI resource allocation request message is received, the LIDHF block 212 requests the VCF and VCI resource allocation from the CRCF block 213 located in the same ATM call controller 21 (step 136). The CRCF block 213 then allocates the VPI and VCI resources (step 138) and delivers the resource allocation results of the VPI and VCI to the LIDHF block 212. The LIDHF block 212 transfers the received resource allocation result to the called party PPCCF block 231b located in the access multiplex controller 23 (step 141).

The receiving side PPCCF block 231b which has received the resource allocation result from the LIDHF block 212 has the receiving side VPI to the CRCF block 232b located in the same access multiplex controller 23 with the VPI and VCI included in the result. And VCI resource allocation (step 143). The CRCF block 232b allocates resources to the VPI and VCI (step 145), and transfers the resource allocation result including the VPI and VCI to the called party's PPCCF block 231b (step 146).

Subsequently, the low-speed ATM PVC connection operation will be described with reference to FIG. 4E.

The receiving side PPCCF block 231b receiving the execution result from the CRCF block 232b first sends the low speed ATM to the AMCF block 41b located in the receiving side access multiplex module (AMM) 40b for the destination side low speed ATM PVC connection. Requires PVC connection (step 148). The AMCF block 41b completes the low speed ATM PVC connection (step 150), and delivers the result to the called party PPCCF block 231b. Upon receipt of the ATM PVC connection result from the AMCF block 41b, the called party PPCCF block 231b stores the incoming connection information of the switching system body in the R_SPC_INF relation 91 located in the ATM call controller 21 (step 151). In step 152, the low-speed incoming connection information is stored in the R_AMSPC_INF relation 95 located in the access multiplex controller 23. Then, the execution result is transmitted to the calling party PPCCF block 231a located in the access multiplex controller 23. Return with you. The originating PPCCF block 231a which has received the execution result from the called party PPCCF block 231b determines the calling party VPI and VCI and the called party VPI and VCI as the calling party label and the called party label of the GSMP (step 154). ), Extracting the originating GSMP port number corresponding to the logical port number which is the connection shape information connecting the originating access multiplex module (AMM) 40a and the ATM interface module 30 of the switching system main body (step 155). ). At this time, when the called party performs the high speed or medium speed interface, the called party GSMP port number corresponding to the logical port number of the called ATM interface module 30 is extracted, and in the case of the low speed interface, the called party access multiplex After extracting the destination GSMP port number corresponding to the logical port number connecting the ATM interface module 30 of the switching system main body connected to the module 40b, the GMPHF block 214 together with the traffic parameters and the band information is extracted. Request the ATM PVC connection of the exchange system body (step 156). Receiving such ATM PVC connection information, GMPHF block 214 transfers the GSMP protocol message to GSPHF block 251 using IPC (158) and proceeds to step E.

Subsequently, referring to FIG. 4F, the ATM PVC connection operation of the main body of the switching system is as follows.

The GSPHF block 251 receiving the GSMP protocol message transmits the ATM PVC connection information to the GSCCF block 252 (step 160). The GSCCF block 252 receiving the ATM PVC connection information transmits the ATM PVC connection information to the AIMCF block 31 to establish the ATM PVC connection (step 162). At step 164, the ATM PVC connection is established and the performance is transmitted to the GSCCF block 252. The GSCCF block 252 transfers the ATM PVC connection result to the GSPHF block 251, and the GSPHF block 251 transfers the ATM PVC connection result to the GMPHF block 214. The GMPHF block 251 transfers the execution result to the calling PPCCF block 231a. The originating PPCCF block 231a receiving the ATM PVC connection result from the GMPHF block 251 sends the result to the AMCF block 41a using an IPC message for the low-speed ATM PVC connection (step 167), and the AMCF Block 41a performs a low speed ATM PVC connection (step 171), and passes the result to the calling party PPCCF block 231a (step 176).

The calling party PPCCF block 231a stores the calling party connection information of the switching system body in the R_SPC_INF relation 91 located in the ATM call controller 21, and stores the slow calling party connection information in the access multiplex controller 23. The R_AMSPC_INF relation 95 is stored (step 178). Then, the charging information is stored in the PCGF block 215 located in the ATM call controller 21, and the execution result is transmitted to the calling party PPCCF block 231a (step 182). The originating PPCCF block 231a returns the result of performing the low speed ATM PVC connection control to the WSPPCCF block 15 (step 184), and the WSPPCCF block 15 transmits the returned execution result to the TMN agent 13, Output to operator terminal (step 186).

The low-speed ATM PVC point-to-point connection control method using such middleware can facilitate the development of a low-speed PVC point-to-point connection control application program, and has a minimal effect from the difference in hardware or operating system constituting the switching system. Control the PVC point-to-point connection. In addition, since it is configured in the same manner as the existing high speed and medium speed ATM PVC HMI commands, it is possible for the operator or TMN agent to increase the convenience of operation and the efficiency of management and maintenance of ATM PVC point-to-point connection control.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

As described above, according to the low-speed ATM PVC point-to-point connection control method according to the present invention, the existing high-speed and medium-speed ATM PVC connection and the low-speed ATM PVC connection without separately configuring the low-speed ATM PVC connection function with the same HMI command By doing so, the operation convenience of the operator can be enhanced. In addition, since the middleware interface method is used so that the once-developed software function is not dependent on the system, the reuse of the existing high speed / medium speed ATM PVC connection software can be improved.

Claims (14)

An access multiplex module for performing a low speed ATM subscriber matching function and a frame relay interworking function; An access multiplex controller for controlling the operation of the access multiplex module to interlock control the low speed ATM PVC connection control and the frame relay and the ATM PVC connection; An ATM interface module for performing a high speed or medium speed ATM subscriber matching function; An ATM call controller for controlling the operation of the ATM interface module to control the high speed or medium speed ATM PVC connection; And Low speed ATM PMB point-to-point connection control for the open ATM switching system, characterized in that it comprises a workstation module for controlling the input and output functions of the HMI commands used to perform the low speed ATM PVC connection control function. Device. The method of claim 1, The low speed AMB FB point-to-point connection control device, the low speed AMT FMB point-to-point for the open ATM switch system, characterized in that further comprising a switch operating controller for performing the operation, maintenance function of the ATM switch Connection control device. The method of claim 1 or 2, wherein the access multiplex controller, A middleware server function for performing the required ATM PVC point-to-point connection function from the workstation point-to-point connection control function block, and a point-to-point connection control function for extracting a universal switch operation protocol port for controlling the switch in the switch operation controller block; A connection resource control function block for managing UNI and NNI link resources of the access multiplex module and the ATM switch body; And Low speed ATM PB point to point connection control device for the open ATM switching system, characterized in that it comprises a database for storing the low-speed calling party information and one-way destination information for performing the low-speed ATM PVC point-to-point connection function . The method of claim 3, wherein the access multiplex controller, An originating access multiplex controller having the point-to-point connection control function block, the connection resource control function block, and the database, allocating resources of an originating VPI and a VCI; And An open access access multiplex controller comprising the point-to-point connection control function block, the connection resource control function block, and the database to allocate resources of a called party VPI and a VCI; Speed ATM PMB Point-to-Point Connection Control Device for. The method of claim 1, The access multiplex module is a low speed ATM PMB point-to-point connection control device for an open ATM switching system, characterized in that it comprises an AMCF block performing the low speed ATM UNI and NNI subscriber matching function. The method of claim 1, The ATM interface module, the low-speed ATM PMB point-to-point connection control device for the open ATM switching system, characterized in that it comprises an AIMCF block for performing the high speed and medium speed ATM UNI and NNI subscriber matching function. The method of claim 1 or 2, wherein the ATM call controller, A library data processing function block accepting an originating VPI and a VCI resource allocation request message from the point-to-point connection control function block located in the originating multiplex controller; A connection resource for allocating the resource in response to the VPI and VCI resource allocation request message and transferring the resource allocation result to the point-to-point connection control function block located at the called party multiplex controller through the library data processing function block; Control function block; A point-to-point connection control function block requesting the connection resource control function block to allocate the VPI and VCI resources to a destination VPI and VCI resource allocation; A universal switch operation protocol transfer block configured to transfer a universal switch operation protocol message to the switch operation controller using a universal switch operation protocol; A PCGF block for generating PVC charging records by receiving PVC charging information from the point-to-point connection control function block located in the source multiplex controller; And A low speed AMB FV point for the open ATM switching system, characterized in that it comprises a database for storing the high-speed or medium speed originating side information and one-way destination side information for performing the high speed or medium speed ATM PVC point-to-point connection function. Point connection control device. The method of claim 2 or 6, wherein the switch operation controller, A universal switch operating protocol delivery block accepting universal switch operating protocol messages; And A GSCCF block for delivering the message received from the GSPHF block to the AIMCF block provided in the ATM interface module so that an ATM PVC connection can be established substantially. AMT PMB point-to-point connection control device. (a) checking for errors in parameter information of HMI commands received from an operator; (b) assigning a calling party VPI and VCI if there is no error as a result of the checking in step (a); (c) determining whether the called party performs the low speed interface; (d) allocating the called party's VPI and VCI resources through the access multiplex controller when the called party performs the low speed interface as a result of the determination in step (c); (e) allocating the called party's VPI and VCI resources through the ATM call controller when the called party performs the high speed or medium speed interface as a result of the determination in step (c); (f) determining a calling party universal switch operating protocol label and a called party universal switch operating protocol label, respectively; (g) extracting a universal switch operating protocol port number corresponding to the universal switch operating protocol label determined in step (f); (h) requesting an ATM PVC connection of the switching system body; (i) requesting a low speed ATM PVC connection to the access multiplexer; (j) a method of controlling a low speed ATM PM point-to-point connection for an open ATM switching system, the method comprising storing the calling side connection information in the high speed and medium speed PVC connection information relations and the low speed PVC connection information relations; . The method of claim 9, wherein step (b) (b-1) As a result of the check in step (a), if there is no error, the calling party VPI and VCI are sent to the library data processing function block located in the ATM call controller through the calling point to point connection control function block located in the access multiplex controller. Delivering an assignment request message; (b-2) requesting the VPI and VCI resource allocation to a connection resource control function block located in the ATM call controller; (b-3) allocating the VPI and VCI resources in response to the originating VPI and VCI allocation request message; (b-4) transferring the allocation result performed in the step (b-3) to the originating point-to-point connection control function block via the library data processing function block; (b-5) requesting allocation of VPI and VCI resources to an originating connection resource control function block located in the access multiplex controller; (b-6) allocating VPI and VCI resources in response to the resource allocation request requested in step (b-5); And (b-7) low speed ATM for the open ATM switching system, comprising: transmitting the assignment result performed in step (b-6) to the originating point-to-point connection control function block. How to control BC point-to-point connection. The method of claim 9, wherein step (d) (d-1) transferring the called party connection information to the called party point-to-point connection control function block located in the access multiplex controller; (d-2) forwarding a called party VPI and a VCI resource allocation request message to a library data processing function block located in the ATM call controller; (d-3) requesting the VPI and VCI resource allocation to a connection resource control function block located in the ATM call controller; (d-4) allocating the VPI and VCI resources in response to the request of step (d-3); (d-5) transferring the resource allocation result performed in step (d-4) to a called party point-to-point connection control function block located in the access multiplex controller; (d-6) requesting a called party VPI and VCI resource allocation to a connection resource control function block located in the access multiplex controller; (d-7) allocating the VPI and VCI resources in response to the request of step (d-6); And (d-8) a low speed ATM for the open ATM switching system, comprising transmitting the result of the assignment performed in the step (d-7) to the called point-to-point connection control function block. How to control BC point-to-point connection. The method of claim 9 or 10, wherein step (e) (e-1) transmitting called party connection information to a called party point-to-point connection control function block located in the ATM call controller; (e-2) requesting a called party VPI and VCI resource allocation to a connection resource control function block located in the ATM call controller; (e-3) allocating the VPI and VCI resources in response to the request of step (e-2); (e-4) transferring the resource allocation result performed in the step (e-3) to the called point-to-point connection control function block; And (e-5) storing the called party connection information in the high speed and medium speed relations and returning to the calling party point to point connection control function block located in the access multiplex controller. Low speed ATM PMB point-to-point connection control method. The method of claim 9, The HMI command is configured such that a command for a high speed or medium speed ATM PVC connection and a command for a low speed ATM PVC connection have the same configuration. The low speed ATM MPB for the open ATM switching system, wherein the high speed or medium speed ATM PVC connection is distinguished from the low speed ATM PVC connection by a logical port number included in the parameter information of the HMI command. How to control point-to-point connections. A computer readable program having a program recorded thereon that can execute a method for controlling a slow AMT PCC point-to-point connection for the open ATM switching system according to any one of claims 9 to 11 and 13. Recording media.