DE19506110C1 - Method for generating a load condition in telecommunications, in particular in telephone switching systems - Google Patents

Abstract

The invention relates to a method for testing call processing means (CP) to which at least one communications terminal (EG) is connected, in which method the following steps are carried out: Messages from the communications terminal (EG) for recalling output features (L) in the switching technology (CP) are copied together with a predeterminable time value (ZW); the activation messages (M) which have been copied are fetched out after a period of time which corresponds to the time value (ZW) has elapsed, in order to recall the output feature (L) and can be simultaneously copied again. <IMAGE>

Description

The invention relates to a method for testing a ver averaging system in which the retrieval of features in the switching system is tested.

DE 41 39 460 C1 describes a method and a device for checking selected functions of a communication tion system known. Here certain functions, for example the implementation of the "short choice ", changed so that this function is faulty is realized and if the ver changed function a control program restart is triggered.

DE 38 41 965 A1 describes a processor load simulation device known for the simulation of load conditions processor-controlled communication systems, here with contact facilities associated with subscriber facility grinding with a processor load simulation device final simulations via subscriber line units irritates. The knowledge lies in the known circuit arrangement underlying that it is irrelevant in the desired load case of the Communication system actual connection paths between the subscriber facilities. It’s enough to generate the actual processor load, a de finished control process, like in this case the loops final simulation, flatten.

Modern communication terminals, both digital and analog, are within a private branch exchange via a Subscriber interface unit and a downstream one  Line technology module on a central control tion switched on. The general structure of such PBX is in the publication "ISDN in the office, HICOM, special edition, telcom report and Siemens Magazin Com ", 1985 (ISBN 3-8009-3846-4) (see there in particular pages 69 and 70). For the retrieval of performance features a corresponding activation message from the terminal to the Given switching technology, which then the desired Provides performance for the terminal. Sol Features include redialing, Call back, call transfer, brokering, conference, appointment, parking Call number memory, or operation of a server as with for example voice mail, text fax server, or answering machine ter.

Integration and system testing require a lot of performance tested for functionality by long-term tests will. In these tests, the Lei system or the switching technology as in for example error message, restart etc. Also one Base load up to high or overload is called the rear base load for the manual test or as a load test itself compelled.

The performance test in the central control is by switching on external machines or by manual Tests realized. During the test by the external machines arise high costs for the hardware and the effort for the cabling since the hardware in analog networks is very open is agile. A quick installation is from the same Also not possible for reasons. The test of performance male is written by special ones written for these machines Scenarios carried out. In the manual test is a personal  intensive work to enter the respective activation notification required by pressing a button on the end devices.

The invention has for its object a method of Specify the type mentioned, in which the debit can be generated in a simple manner.

This object is achieved by the in patent claim 1 specified features solved.

In the method according to the invention, any Bela compiled in a simple way will. A base load or also a base load can also be used High load can be realized.

The inventive method can without special machines and expensive installation work.

The invention is based on the idea of each test location for manual tests of installed devices in the sense of authorized test participant stations also for generation the load or for creating the test scenario Zen. To do this, press the keys to call the selected one Performance features on a terminal after a certain time be repeated in order to constantly repeat such a scenario.

In the case of a central control system for a private branch exchange, the works according to the reporting principle, d. H. where the lei feature is called up by an activation message, According to the invention, a procedure is implemented that the Ak Activation message of a keystroke copied and after a predetermined time repeated.

In the following the invention with reference to one in the drawing illustrated embodiment described.  

In the single figure are the block diagram for the Understanding the invention necessary circuit parts PBX shown. In detail, this is one Test participant station PTLN, which is connected via a participant TLNA unit and a downstream line technology module LM is switched on at the central control ZST. More about these individual circuit parts and their interaction kung is mentioned in the reference "ISDN im Office ".

By pressing a button on the test participant station PTLN is an activation message M from this to a Lei performance feature system LS in the central control ZST. The LS feature system then puts through this activation message M retrieved feature L for the PTLN test participant station is available.

According to the invention, this activation message M for the Zen central control copied. The copying process is for example performed in the LM line technology module. For this the activation is, for example, via a switch S1 message M written in a memory SP. Together with the Activation message M a time value ZW is saved. After a period of time corresponding to the time value ZW is the activation message M from a message generator MG output from the memory SP via a switch S2. This leads to repeated retrieval of the feature mals L from the LS feature system.

With a closed switch S1 during an act activation period M copied and to saved together with a time value ZW. With one closed This copied activation message will be sent to switch S2 gene M again during an operating period and  lead to a renewed call of performance characteristics L. At the same time, if the switch remains closed S1 each of these copied activation messages M again copied again into the memory SP.

With the switch S1 the marking and the first Copy an activation message M due to a key pressure activated at the test participant station PTLN, so that a scenario can be programmed and expanded. By the switch S2, the message generator MG is activated, so that every activation message M that has already been copied and mar was copied again and again.

To accidentally start the test procedure at the customer to avoid the jumps in the copying procedure only in the test field by adapting the code in the source program brought in.

Claims (1)

Method for generating a load condition in telecommunications, in particular telephone switching systems from a test subscriber station (PTLN), characterized in that an activation message (M) of the test subscriber station (PTLN) for calling up a performance feature (L) from the central control (ZST) is stored ( SP), that after a time also corresponding to a stored time value (ZW) the activation message (M) for the renewed call (MG, S2) of the performance feature (L) is output and optionally (S1) is stored again.