KR0123249B1 - Method of controlling traffic in the full-electronic switching system - Google Patents

Abstract

The incoming traffic control method in a full electronic exchange comprises the steps of: (a)remaining at an incoming traffic control stand-by state upon generation of traffic or trouble in the full electronic exchange, for protecting the exchange; (b)after performing the step (a), receiving the traffic measuring results information by processors for the protection of the exchange in the stand-by stage to analyze and control the received information; (c)requesting an incoming traffic control start for the protection of the exchange in the stand-by stage; and (d)requesting an incoming traffic control implementation stopping for the protection of the exchange in the stand-by stage.

Description

How to Control Proving System Traffic in Electronic Switching System

1 is a schematic conceptual diagram of an all-electronic exchange for control of attestation traffic according to the present invention.

2 is a block diagram of the hardware of the electronic switching system to which the present invention is applied.

3 is a flow chart of a verification system control process according to the present invention.

* Explanation of symbols for main parts of the drawings

210: MMP (Man Machine Processor)

220: OMP (Operation and Maintenence Processor)

120: access switching processor (ASP)

130: INP (Interconnection Processor)

140: NTP (Number Translation Processor)

The present invention effectively manages the flow of traffic in case of network failure, planned pause and traffic congestion in an electronic switchgear, and protects its own exchange when it is unable to communicate information such as network failure or congestion with a neighboring exchange. The present invention relates to a verification system traffic control method of an electronic switch in order to maximize the use efficiency of the electronic switch.

Due to the rapid development of electronic communication, large-scale all-electronic exchanges have been developed to provide various communication services to users. As the demand for these various services increases rapidly, the load on various devices of the electronic switchgear changes in traffic patterns, expands and expands special services, increases in the use of private branch exchange (PBX) services, and increases the capacity of the urban relay transmission facility. Due to the increase in tamdem relay lines, traffic is continuously increasing. In particular, when natural disasters in a specific area cause failures such as exchange facilities and transmission facilities, traffic is excessively concentrated at the exchange in a specific area, causing traffic congestion or failure at a specific exchange.

If the traffic congestion or failure is not managed in the exchange or at the network management level, serious traffic jams may occur at the electronic switchboard. There is a need in the electronic switchboard for a method of controlling and controlling so that excessive traffic generated from the exchange service users can be restricted from the initial stage or bypassed to other areas with less traffic while exchanging with other facilities.

However, since the signaling system (R2, Decadic) used in the conventional exchange has no way of exchanging congestion and failure information with the neighboring exchange, the attestation system transmitted from the neighboring exchange when the exchange is congested or a failure occurs. There is a need for a proof traffic control method of controlling traffic to protect and control a local exchange.

Therefore, the present invention devised in response to the above requirements, when the traffic congestion occurs in the electronic switchboard which is modularized in a distributed structure distributed to several processes or failures such as exchange equipment and transmission equipment, the information is neighbored Or if it is unable to transmit to another exchange or receive such information from a neighboring exchange, it may protect the local exchange by limiting the attestation traffic entering the exchange where the failure or congestion occurred and The purpose of the present invention is to provide a method for controlling the attestation traffic of an all-electronic exchange.

The present invention for achieving the above object is to output a variety of information generated in the system through the input and output equipment or MMP (Man Machine Processor) that provides a variety of functions to enable the operator to perform the functions required by the exchange, and operation management And an OMP (Operation and Maintenence Processor) for maintenance, an Access Switching Processor (AP) that performs matching and signal processing functions for subscriber lines and trunk lines, and an INP (switching function) that connects the OMP and ASP. An attestation traffic control method applied to an electronic switch system having an NTP (Number Translation Processor) connected to the OMP and performing a number translation and route control function, the traffic congestion of the electronic switch, or A first step in which the attestation system traffic control waits for protecting the exchange in the event of a failure; A second step of receiving traffic measurement result information for each processor for protection of the exchange when a traffic congestion or a failure occurs in the ventilation and performing analysis and control; and after the first step, the traffic congestion of the all-electronic exchange or a failure occurs A third step of requesting to start the attestation traffic control for protection; and a fourth step of requesting to stop the execution of the attestation traffic control for protecting the exchange when a traffic congestion or failure occurs after performing the first step. It is characterized by including.

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

FIG. 1 is a schematic conceptual diagram of an all-electronic switch for controlling attestation traffic in case of a traffic congestion or failure of the all-electronic switch according to the present invention.

When the exchange triggers a congestion, it sends a congestion information to a neighboring exchange to control traffic transmission, or when a congestion occurs in a neighboring exchange, the congestion information is received to limit traffic to the congestion originating station. Existing public switch telephone networks (PSTNs) with no function should limit traffic coming from neighboring exchanges if their exchanges run congested or fail, protect the exchanges, and maximize traffic utilization efficiency.

As shown in the figure, the electronic switching system is a central control subsystem (CCS) 110 that performs an operation management function including a function of controlling traffic while measuring and analyzing traffic congestion between the maintenance function and the exchange and the status information of the facility. And a plurality of access switching processors (ASPs) 120 that are physically equipped with an access switching subsystem (ASS) for performing matching functions, signal processing, and call processing for subscriber lines and relay lines, and the plurality of ASPs. Interconnection Processor (130) that implements an Interconnection Subsystem (INS) for connecting the 120 and CCS 110 to a high speed optical signal link, and a signaling method that cannot transmit congestion and failure information (R2, Decadic) A number translation processor (NTP) 140 that receives the attestation traffic control from another switching center connected to the MSS and transmits the number translation to the MSS 112, wherein the CSS 110 operates. Man Machine Processor (MMP) including MMS (Man Machine Subsystem) 111, which is responsible for interface between users and exchanges, and Measurement and Statistics Subsystem (MSS), 112, which performs statistical functions by measuring and analyzing traffic. And an OMP (Operation / Maintenance Processor) including a Network Management Subsystem (NMS) 113 that maximizes the utilization efficiency of the communication network and protects and controls the electronic switchboard.

2 is a block diagram of the hardware of the electronic switching system to which the present invention is applied, and outputs various types of information generated in the system through input / output equipment (system console, printer, TTY, etc.) Man Machine Processor (MMP) 210 equipped with MMS (Man Machine Subsystem) which provides various functions to perform, and interface function with MMS performing the input / output function to perform attestation traffic control function. Network Management Interface (NMI), NPS (Network Performance Supervision) to determine the load status of the exchange by measuring and analyzing the traffic of each processor of the exchange, and when a specific processor or the whole of the exchange is congested or a failure occurs. OMP (Operation and Maintenance Pr) that implements a Route Control Interface (RCI) that limits the attestation traffic of the associated processor or exchange. ocessor), NTP (Number Translation Processor) 140, which performs number translation by performing number translation when receiving exchange control of traffic from an exchange of another exchange station, and performs a route control function with the RCI and NPS, and a subscriber line and a trunk line. And an access switching processor (ASP) 120 that performs a matching function and a signal processing function, and an INP (interconnection processor) 130 that connects the OMP 220 and the ASP 120.

FIG. 3 is a flow chart of a verification system control process according to the present invention, and shows a verification system traffic control method for protecting the exchange in case of traffic congestion or failure of the electronic switch.

First, the attestation traffic control function for protecting the exchange in case of traffic congestion and failure of the electronic switchgear starts, and the traffic information of the exchange and the status of the exchange equipment are periodically checked and the attestation traffic control waits to control the traffic. Maintain state (1).

In the dashed state, the operator prevents the traffic congestion measured and analyzed by his switching center or spreads to another neighboring exchange due to the failure, and protects the exchange. If a start is required (2), the congestion information detection cycle time is registered (3) in order to keep track of its exchange traffic processing and failure phenomenon.

Subsequently, the attestation traffic control function records the traffic control status in the database to manage the current running state (4) and requests the exchange traffic information detection with the traffic measurement function to determine the exchange failure or traffic throughput. After that (5), it transitions to the traffic measurement request response waiting state (6).

When the traffic measurement request response message is received from the traffic measurement function in the response waiting state (7), it is checked whether the current traffic measurement is normally performed (8), and if it is normally performed, the attestation traffic control function is normally performed to the operator. (9), the system returns to the first attestation traffic control wait state, and receives a timeout signal without receiving a traffic measurement request response message so that the traffic measurement request timeout is exceeded in the response waiting state. (10) Or, if the current traffic measurement is not performed normally, at this time initializes all attestation traffic control information (11), and informs the operator that the execution of the attestation traffic control function has failed (12).

When the request for stopping the attestation traffic control function is received from the operator in the attestation traffic control dash state (13), after reviewing whether the attestation traffic control function is currently performed in the exchange or not in the registered database information, (14) If it is in progress, suspend the attestation traffic control function (15).

Subsequently, it initializes all the attestation traffic control function and related information (16), informs the operator with a standardized output message that the function has been stopped (17), and terminates. If not, register that the attestation traffic control function is stopped (18), inform the operator that the relevant function is already stopped and cannot be stopped (19), and terminate the function.

In addition, in the wait state of the attestation system traffic control (50 to 60 seconds), it is necessary to check the operating state and the traffic processing status of the exchange periodically.

Therefore, when the traffic measurement result and the exchange state information are received from the measurement function (MSS) (20), the congestion and failure states for each processor of the exchange are verified (21), so that the state of the exchange and the traffic processing state are all normal. If yes, it is checked whether the current attestation traffic is restricted (22). As a result of the check, if the attestation traffic is being restricted, the attestation traffic stops restriction (23), if the attestation traffic is not restricted, the registered control information is initialized (24), and the attestation traffic returns to the control waiting state. .

After verifying the traffic state of the processor, if the state of the exchange is a minor congestion or minor alarm state, the initial state traffic limit information of the attestation route is checked to limit the attestation traffic. (25) A request is made to restrict the traffic flowing into the trunk line management processor in which the congestion has occurred (26), and register the traffic time limit necessary to make the traffic time limit constant (27).

On the other hand, if the exchange is in a major congstion state or major alarm condition, the critical line traffic limit information of the attestor route is checked (28) to limit the attestor traffic, so Request 29 to limit the incoming traffic to the management processor, and register 30 the attestation traffic timeout required to make the traffic timeout constant.

Subsequently, after registering the attestation traffic timeout (27,30), after the attestation traffic timeout has elapsed (31), and after the attestation traffic timeout is completed (32), Request to stop the attestation traffic restriction (33), initialize the attestation traffic control information (34), and then inform the operator with a standardized message that the attestation traffic timeout has been completed and the traffic restriction has been stopped (35), To return.

As described above, according to the present invention, a proofing system for the exchange protection control in the event of a traffic congestion or failure of the exchange due to a specific event (sports event, broadcasting, etc.), natural disaster, exchange facility, transmission facility failure, etc. By applying the traffic control method, it is possible to prevent and prevent the traffic congestion or spread to other communication networks in the event of a failure of the exchange in advance to protect and control the exchange, and to maximize the use efficiency of the already installed exchange, It has the effect of increasing income and improving the quality of services.

In addition, we can provide significant R & D efficiency in the future by applying the proving system traffic control method for protecting the exchange when the traffic congestion or failure occurs in the BISDN development in the BISDN. It has an effect.

Claims (9)

MMP (Man Machine Processor) 210 which provides various functions to output various information generated in the system through I / O equipment or enables the operator to perform the functions necessary for the exchange, and OMP for operation management and maintenance An Operation and Maintenance Processor (220), an Access Switching Processor (ASP) 120 that performs a matching function and a signal processing function for subscriber lines and relay lines, and connects the OMP 220 and the ASP 120. Proving system traffic control applied to an electronic switch having an INP (Interconnection Processor) 130 having a switch function and an NTP (Number Translation Processor) 140 connected to the OMP to perform a number translation and route control function. A method comprising: a first step of waiting for attestation system traffic control to protect a switch when a traffic congestion or failure occurs in the switchboard; and after performing the first step, A second step (20 to 35) of receiving and analyzing traffic control result information for each processor to protect the exchange when a traffic congestion or a failure occurs; Third step (2 to 12) requesting start of attestation traffic control for protection of exchange in case of failure, and after performing the first step, traffic congestion of all switchboards or attestation of traffic control for protection of exchange in case of failure And a fourth step (13 to 19) for requesting suspension. The method of claim 1, wherein the second step comprises: a fifth step of verifying congestion and fault conditions of each processor of the exchange when receiving the traffic measurement result and the state information of the exchange from the measurement function; Step 6 of checking whether or not the current attestation traffic is being restricted if the state of the traffic and the traffic processing state are all normal, and if the attestation traffic is being restricted, stopping and verifying the attestation traffic. A seventh step of initializing the registered control information and returning to the first step if the traffic restriction is not limited; and if the state of the exchange is a minor congestion or minor alarm condition as a result of the fixed state verification, An eighth step of performing attestation traffic control according to the initial state traffic limit information of the route; and as a result of the failure state verification, And a ninth step of performing attestor traffic control according to the critical condition traffic limit information of the attestor route in the case of major congstion or major alarm conditions. System traffic control method. 3. The method of claim 2, wherein the eighth step comprises: a tenth step of requesting restriction of traffic flowing into the relay line management processor in which congestion occurs by checking initial state traffic restriction rate information of the attestation system route; An eleventh step of registering the attestation traffic timeout required to be constant; and suspending the attestation traffic restriction when the at least one attestation traffic timeout is completed after the registered attestation traffic timeout has elapsed and in a waiting state to release the traffic restriction. And a thirteenth step of requesting, and after requesting the traffic restriction stop, a thirteenth step of initializing the attestation traffic control information and informing the operator that the traffic restriction has been stopped because the attestation traffic restriction time has been completed. A method for controlling attestation traffic of an electronic switching system. 3. The method of claim 2, wherein the ninth step comprises: a tenth step of requesting restriction of traffic to the trunk line management processor in which congestion occurs by checking the serious state traffic limit information of the attestation route; An eleventh step of registering the attestation traffic timeout required to be constant; and suspending the attestation traffic restriction when the at least one attestation traffic timeout is completed after the registered attestation traffic timeout has elapsed and waiting to release the traffic restriction. And a thirteenth step of requesting, and after requesting the traffic restriction stop, a thirteenth step of initializing the attestation traffic control information and informing the operator that the traffic restriction has been stopped because the attestation traffic restriction time has been completed. A method for controlling attestation traffic of an electronic switching system. 2. The third step of claim 1, wherein the third step further comprises: a fifth step of requesting detection of switch traffic information and waiting for a traffic measurement request response when the start of the attestation traffic control function is requested; and a traffic measurement request response in the standby state. And a sixth step of notifying the operator of whether to perform the attestation traffic control function according to whether or not the message is received. 6. The method of claim 5, wherein the fifth step comprises: registering a congestion information detection cycle time and recording a state during the control of the attestation traffic when the start of the attestation traffic control function is requested; And an eighth step of requesting measurement of traffic information for each processor of the exchange and waiting for a traffic measurement request response. The method of claim 5, wherein the sixth step comprises: a seventh step of checking whether the current traffic measurement is normally performed when the traffic measurement request response message is received in the traffic measurement request response standby state; An eighth step of informing the user that the attestation traffic control function is normally performed; And informing the operator that the execution of the attestation traffic control function has failed. The method of claim 1, wherein the fourth step comprises: a fifth step of checking whether the attestation traffic control function is currently being performed when a request for stopping the attestation traffic control function is received from the operator; A sixth step of stopping the traffic control function and notifying the operator; and a seventh step of registering that the attestation traffic control function is in a stopped state and notifying the operator if it is not performed, the seventh step of notifying the operator. How to control attestation traffic. 9. The method of claim 8, wherein the sixth step further comprises an eighth step of suspending the attestation traffic control function and initializing all information related to the attestation traffic control function. System traffic control method.