KR970002739B1 - Method of matching between message transfer parts using for electronic switch - Google Patents

Abstract

The present invention is to provide a method for matching a user part with a message transfer part in a switching system including an access switching subsystem (ASS), an interconnection network subsystem (INS) and a central control system (CCS). The method for matching according to present invention includes the steps of: requesting a signaling message handling processor (SMHP) routing table and receiving the SMHP routing table; generating and processing child processes by the number of activated SMHPs; analyzing a connection result of the child processes and the SMHPs; performing a corresponding process when the connection result is normal or abnormal; and performing a corresponding process when the SMHP is available or not. Thereby, the present invention may improve the performance of the switching system by reducing the number of signals.

Description

Matching method between No.7 signaling method user part and message delivery part in electronic switching center

1 is an overall structural diagram of a matching method for improving system performance between the No. 7 signaling user unit and the message transfer unit in an electronic switching system to which the present invention is applied.

2 is a block diagram and message flow structure diagram for implementing a matching method to improve the system performance between the No.7 signaling user unit and the message delivery unit in an electronic switching system.

3 is an overall flowchart of a matching method processing procedure for improving the system performance between the No. 7 signaling user unit and the message delivery unit in the electronic switching system according to the present invention.

The present invention provides a message transfer unit (MTP: Message Transfer unit) for transmitting a message with a user part of No. 7 signaling method using a common line signaling method, which is an inter-station signaling method for call control such as call establishment or recovery between exchanges. The present invention relates to a matching method between No.7 signaling user part and message delivery part in all-electronic exchange that has improved system performance in implementing matching between all parts.

In order to establish an ISDN network in Korea and provide various services to ISDN users, the introduction of No.7 signaling has become inevitable. In addition, it is necessary to match the ISDN user part of No.7 signaling with the message delivery part that delivers the message to the power station for line call processing of ISDN users. Conventional matching methods allow separate matching to be performed for each signaling method (ISUP / TUP), resulting in redundant processing and a large amount of signal transmission and reception.

In order to establish an ISDN network in Korea and to implement No. 7 signaling, which is defined as the protocol of the exchange period for ISDN users' circuit call processing, the necessity of implementing the matching between the user part and the message delivery part at the electronic switchboard is generated. It was.

The present invention devised in order to meet the above-mentioned requirements is a method of processing by ISUP (ISDN User Part) / TUP (Telephony User Part) in matching between the electronic switch No. 7 signaling system user unit and the message delivery unit. The goal is to provide an integrated matching method that improves system performance.

In order to achieve the above object, the present invention provides a matching method applied to an electronic switch having three subsystems of an Access Switching Subsystem (ASS), an Interconnec-tion Network Subsystem (INS), and a Central Control Subsystem (CCS). 1. A first step of requesting / receiving a Signaling Message Handling Processor (SMHP) routing table; A second step of creating / processing child processes as many as the number of activated SMHPs; A third step of analyzing the connection results with the SMHP; A fourth step of processing according to normal / abnormal with the SMHP and the connection; A fifth step of processing in the SMHP solubilization state; And a sixth step of processing in the SMHP insolubilization state.

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

1 is a schematic structural diagram of an ISDN network configured to provide an ISUP / TUP service by an electronic switch system to which the present invention is applied.

The electronic switch is composed of three service systems: an access switching subsystem (ASS), an interconnection network subsystem (INS), and a central control subsystem (CCS).

ASS performs distributed call processing function in all electronic exchange, which is a distributed processing system, and is classified into ASS-P (Packet), ASS-S (Subscriber), ASS-7 (SS7), and ASS-T (Trunk). Up to 64 can be mounted. In addition, INS performs centralized call processing functions and performs system-level operation and maintenance functions in CCS.

The user part that handles ISUP / TUP relay calls is mounted on the ASS-T, and the message delivery part that handles the message delivery function with the power is implemented in a single ASS-7.

2 is a structural diagram showing the relationship between the related blocks and the flow of messages to implement the matching method function to improve the system performance between the No.7 user part and the message delivery part of the electronic switching system.

Conventional matching method between user part and message delivery part is matching between message delivery part by ISUP / TUP in UPI (Telephony User Part Interface) / TPI (Telephony User Part Interface) block existing in one ASS-T. Achieved. The new matching method performs initial matching with the message delivery unit in the TDH block implemented in the ASS-T, and delivers information about the routing table to the UPI / TPI. Regardless of the signaling method, the matching with the message transfer unit performed for each signaling method is integrated and processed. Also, it receives information about the change of routing table from S7INM block and transfers it from TDH block to UPI / TPI block. The UPI / TPI block performs ISUP / TUP relay calls by referring to the SMHP routing table received from the TDH block. The UPI / TPI block performs only interworking with the SMHP for transmitting and receiving messages of the generated call without being concerned about initiating interworking with the message transfer unit.

3 is an overall flowchart of a matching method for improving system performance between the No. 7 signaling user unit and the message transfer unit of the electronic switching system according to the present invention.

At system startup, the TDH block requests S7INM SMHP routing table information (1). After receiving information about the SMHP routing table (2), TDH child processors are generated as many as the number of SMHP acted by referring to the routing table (3). In the generated TDH ruler, the number of signal points of the power to connect to is obtained (4). On one signal, 10 power signal point information is loaded and transmitted (5). When the connection request is made to the message transfer unit (6) and the response message for the connection request is received (7), the connection result is notified to the TDH main process (8). The main process receives the connection notification from each of the generated processes (9) and analyzes the result (10) and if there is an abnormal connection with the SMHP, the abnormal result is sent to the S7INM block with the abnormal SMHP number (11). In the S7INM block, an abnormal SMHP is deleted from the connection result with the received SMHP, a new routing table is created, and a routing table change request is made to the TDH block (12). In the TDH block that received the change request, the routing table is changed (13), and a response to the routing table change request is sent to S7INM (14). Then, the UPI / TPI block notifies that the routing table is changed (15). If the connection and connection with the SMHP are normally performed, the routing table is notified to the UPI / TPI (16). After connecting with the SMHP, the local station requests the signaling point information (17) and receives the information (18). It waits in the call processing state and the initial matching with the message transfer unit ends. When SMHP is available after initialization interworking, a routing table change request is received from the S7INM block (19). A child process is generated as many as the number of available SMHPs (20) to perform the connection request with the message transfer unit in the generated child process. The result of the connection between the process and the SMHP is analyzed (21) and the connection result is notified to S7INM (22). Information about the changed routing table is notified to the UPI / TPI block (23). Upon disabling SMHP, a routing table change request is received from the S7INM block (24). In case of unavailability, there is no need for a separate connection request. After notifying UPI / TPI about a routing table change (25), a change request response is sent to S7INM (26).

As described above, the present invention can reduce the number of existing signals by integrating and matching a signal without implementing a signal method unlike the conventional method of matching between a user unit and a message transfer unit for each ISUP / TUP signal method. In addition, the number of signals was reduced by allowing information about 10 powers to be accommodated in one sys- nal in a manner in which information on one big power was loaded on a single signal. The UPI / TPI block does not manage the routing table, but only formats the messages for sending and receiving messages with the power.

Signal number of conventional matching method = (SMHP number × power) × ASS-T × 2 Signal number of matching method that improved system performance = (SMHP number × power / 10) × ASS-T number

The new matching method can achieve the effect of reducing the number of signals up to 20 in the existing matching method, which greatly improves system performance.

Claims (3)

In a matching method applied to an electronic switch having three subsystems of an Access Switching Subsystem (ASS), an Interconnec-tion Network Subsystem (INS), and a Central Control Subsystem (CCS), a signaling message handling processor (SMHP) First step to request / receive routing table; A second step of creating / processing child processes as many as the number of activated SMHPs; A third step of analyzing the connection results with the SMHP; A fourth step of processing according to normal / abnormality of the connection result with the SMHP; A fifth step of processing in the SMHP solubilization state; And a sixth step of processing the SMHP in an unavailable state. The method of claim 1, wherein the second step comprises: calculating the number of signals transmitted and checking whether the number of signals has been transmitted; In case that the number of signals is transmitted, and if the number of signals is not transmitted, the No. 7 signaling method user unit is connected to the SMHP. Matching method between message delivery units. The method of claim 1, wherein the fifth step comprises: generating a child process corresponding to the number of activated SMHPs by changing the SMHP routing table and analyzing a connection result with the SMHP; A method of matching between No.7 signaling user part and message delivery part in the electronic switchboard, characterized in that the step of notifying the connection result to S7INM, and notifying the routing table change is made.