JPH01265759A - Subscriber dummy multi-load generator - Google Patents

Abstract

PURPOSE:To evaluate the operation and performance of an exchange system in the overload state by generating a dummy multi-load simulating the load together with the habit of subscriber closer to the actual load. CONSTITUTION:A line connection control section 11 connected to an exchange system, a call control section 12 generating a call of a service class designated by an input parameter and controlling the operation of an incoming call from the line, a subscriber habit simulating control section 13 simulating the traffic characteristic based on the subscriber habit and controlling the behavior of the call and a man-machine interface control section 14 setting the input parameter, reading the input parameter and outputting a statistic data of a generated load constitute the generator. The subscriber dummy multi-load closer to the actual load including the load characteristic based on the subscriber behavior is generated. Thus, the evaluation of the overload duration of the exchange system is attained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a subscriber pseudo-multiple load generator, and is used to evaluate the operational performance of a switching system during abnormal traffic loads such as overload and traffic concentration. This invention relates to a subscriber pseudo-multiple load generator having characteristics close to actual loads.

[Conventional technology]

Conventionally, this type of subscriber pseudo-multiple load generator has been connected to a plurality of subscriber lines of about 30 lines, and each line or group of lines has a rotary dial or push-button dial telephone 8! Type 1
A common method is to set parameters such as call interval, dialed digits, starting time, call hold time, etc., and simply repeat calls according to fixed load conditions specified by these parameters. Even if there are some differences in the method of specifying parameters, identification of load results, and statistical functions, the load generation methods remain within the above range.

[Invention or problem to be solved]

-F The conventional subscriber pseudo-multiple load generator described above uses a load generation method that simply repeats calling in a fixed pattern according to parameter conditions set for each line, so it is possible to The characteristics of the load are different from the actual load, which includes making calls, dialing, and erroneous operations. Therefore, when evaluating and verifying the operational performance of a replacement system under normal load conditions, it is possible to use such a uniform pattern of repeated loads; When trying to evaluate the operation and performance of a switching system under abnormal load conditions such as traffic concentration, it is difficult to evaluate the load characteristics caused by subscriber behavior when actually encountering such a situation. This important element is not included, and it cannot be used as an evaluation test load. That is, there is a problem in that it is not possible to generate a pseudo-multiple load that simulates subscriber behavior that more closely approximates the actual load.

[Means to solve the problem]

The subscriber pseudo multiload generator of the present invention is a subscriber pseudo multiload generator used for verifying the operation of a switching system.
Actions based on static load parameters fixed for each individual subscriber line, such as call hold time, and subscriber habits, such as abandonment, incorrect call, premature call before dial tone, and repeat call when encountering a panic. and a dynamic load parameter for simulating the entire subscriber line group to give a specified statistical result.

It is constructed by continuously and repeatedly generating a specified subscriber pseudo-multiple load by changing the static load parameter according to the dynamic load parameter when detecting the link hack tone and the fins 1 to 1.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. This embodiment is a line connection control unit 1 for connecting to an exchange system.
1. Call control unit that generates calls of the type specified by input parameters to the line and controls the operation of incoming calls from the line] 2. Controls call behavior by simulating traffic characteristics based on subscriber habits Subscriber behavior pseudo control unit 13 to control
and a man-machine interface control section for setting input parameters, reading the input parameters, and outputting statistical data on generated loads.

FIG. 2 is a block diagram of the subscriber behavior pseudo control unit 12 shown in FIG. 1. The control unit 12 controls the entire load to have specified traffic characteristics by changing the normal operation at each stage of call connection in accordance with the type of subscriber behavior to be simulated. In this control, the generated load call count statistics mechanism 130 performs statistics on the number of calls generated in the call control unit 12, and the data is sent to the incomplete call generation control mechanism 131, the incomplete call recall generation control mechanism 132, and the dial tone. This is done by providing the delay subscriber operation control mechanism 133 with the delay subscriber operation control mechanism 133.

First, the method for generating various types of incomplete calls by the incomplete call generation control mechanism 131 is based on input parameters from the man-machine interface unit 14 such as various call types such as dial abandonment, erroneous dial, call abandonment 1, called subscriber busy, etc. A ratio of the number of raw saliva sold separately as a factor is given, and a corresponding state is generated for every call in accordance with the ratio of calls and the statistical data of the number of calls of the load.

Next, the method of generating a repeat call by the incomplete call recall generation control mechanism 132 is based on statistical data measured in an actual telephone network for each incomplete call cause such as the called subscriber being busy or no response (abandoned during a call). Based on the value, the recall rate and recall interval are set as input parameters, and when an incomplete encounter occurs, the probability specified by the recall rate and the value specified by the recall interval is the average value. A call is generated again on the corresponding line at a time interval according to the exponential distribution of .

Next, a method of simulating subscriber characteristics when a dial tone delay occurs using the dial tone delay subscriber operation control mechanism 133 will be described. FIG. 3 is an approximate diagram of statistical data actually measured regarding subscriber behavior in response to dial-up delays. As the dial tone delay increases, the number of subscribers who dial normally by waiting for the dial tone decreases, and the number of subscribers who dial prematurely or abandon the call before hearing the dial tone increases. . The manner in which this ratio increases or decreases changes depending on the length of the dial tone delay time, and is approximated by a polygonal line at around 5 seconds as shown in the figure.

In order to simulate such subscriber characteristics, the control shown in the flowchart shown in FIG. 4 is performed. That is, for a call in the dial tone waiting state (step ■), the probability is determined according to the dial tone waiting duration (this probability value is specified as an input parameter), and whether the call is further continued in the dial tone waiting state or abandoned midway. ■ Decide whether to disconnect or start dialing even though no dial tone is detected.

■), generate each operation for the corresponding line (
Steps ■, ■, ■). By incorporating the above-mentioned control in the state from the time a call is placed to each line until the dial tone is detected, it is possible to simulate the subscriber characteristics when the dial tone is delayed.

In addition, regarding subscriber habits other than the items explained above,
If appropriate, pseudo control is added to the subscriber behavior pseudo control section and corresponding input parameters are defined, various expansions can be made.

〔Effect of the invention〕

As explained above, the present invention adds a subscriber behavior pseudo control section to the conventional subscriber pseudo multiple load generating device, and generates subscriber pseudo multiple load including load characteristics based on subscriber behavior. , it is possible to provide multiple loads with characteristics closer to actual loads, and it is possible to evaluate and verify the operating performance of the exchange system in more rigorous and detailed manner, and in particular, it is possible to evaluate and verify the overload tolerance of the exchange system. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a block diagram of the subscriber behavior pseudo control unit; FIG. 3 is an approximate diagram of statistical data of subscriber behavior with respect to dial tone delay;
FIG. 4 is a flowchart simulating subscriber operations when a dial tone delay occurs. DESCRIPTION OF SYMBOLS 1... Subscriber pseudo multiload generator, 11... Line connection control unit, 12... Call control unit, 13... Subscriber behavior pseudo control unit, 14... Man-machine interface control unit, 130... Statistics mechanism for the number of generated load calls, 131...
Incomplete call generation control mechanism, 132... Incomplete call re-call generation control mechanism, 133... Dial tone delay subscriber operation control mechanism. =9-

Claims (1)

[Claims] In the subscriber pseudo-multiple load generator used to verify the operation of the switching system, static load parameters fixedly given to each individual subscriber line, such as calling interval, dialing start time, dialed digits, and call hold time, are used. , operations to simulate behaviors based on subscriber behavior such as abandonment, incorrect dialing, premature dialing before dial tone, and repeat calls when a busy encounter occurs, so as to give specified statistical results for the subscriber line group as a whole. dial tone, with specific load parameters;
A subscriber pseudo-multiple load generating device, characterized in that upon detection of a linkback tone and a busy tone, the static load parameter is changed by the dynamic load parameter to continuously and repeatedly generate a specified subscriber pseudo-multiple load. .