JPH0443467B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a subscriber line testing system in a time-sharing telephone exchange, and in particular, to a subscriber line testing system with basic testing functions and a subscriber line testing system with basic testing functions. In addition, the present invention relates to a subscriber line testing system in which a subscriber line testing system having an additional testing function coexists in the same exchange.

[Conventional technology]

Conventionally, it has been impossible for two types of subscriber line testing systems to coexist in the same exchange, or even if they coexist, it has been impossible to control between different types of subscriber line testing systems. It was necessary to install more subscriber line test units and line test consoles than necessary, and to specify line test consoles for each subscriber.

[Problem that the invention seeks to solve]

Conventionally, a subscriber line test system in a time-division exchange consists of a subscriber line test unit placed on the subscriber side and a line test console placed on the tester, and these test control information and measurement results are exchanged between them. The communication method for sending and receiving was the method that made the hardware and software of both devices the simplest, reducing device costs and development investment.

Therefore, in order for a subscriber line testing system with new functions to coexist with an existing one within the same exchange, the new subscriber line testing system must be used only for the subscriber lines that will be added at the same time, and the existing It is necessary to use the old subscriber line testing system for subscriber lines, which results in losses due to division of the number of test units and test consoles, unnecessary capital investment, and different operating procedures for the test consoles. In addition, because there are a large number of testers, it is necessary to prepare more testers than necessary.

[Means for solving the problem] In the subscriber line testing system of the present invention, a line testing device (unit) placed on the subscriber side of the time division exchange and a test operation device (console) placed on the tester side are installed. It is possible to identify whether the system belongs to an existing old line test system or a new line test system with new functions, and to perform the old type operation for the old type and the new type operation for the new type. This makes it possible for two types of line test systems, the new and old types, to coexist without any modification to the line test unit or test console of the old line test system.

〔Example〕

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

The figure is a configuration diagram of an embodiment of the present invention. When the line test unit 1 of the new subscriber line testing system with new functions is connected to the test console 2 of the new subscriber line testing system also with new functions via the time division switch 3, the new test console 2 First, a new/old identification signal is sent to the line test unit 1, and the new type line test unit 1, which receives the signal, sends back a new/old identification reception signal to the new type test console 2. The new type test console 2 executes various measurements by adapting the method of receiving test type information and measurement data to that of the new type line test system based on this old and new identification reception signal. When the line test unit 4 of the existing old line test system is connected via the time division switch 3 to the test console 2 of the line test system with new functions, the new test console 2 is connected to the line test unit 1 of the new model. Similarly, a new/old identification signal is sent out, but since this signal has no meaning for the old model line test unit 4, the old/new identification reception signal is not returned and the operation proceeds according to the normal sequence for the old model. .
On the other hand, the new console does not receive a new/old identification reception signal from the other party's line test unit 4 even though it has sent the new/old identification signal, so it determines that the other party is an old model line test unit 4 and performs the old line test. Execute operations as a console for When the new test unit 1 is connected to the old test console 5 via the time division switch 3, the new test unit 1 does not receive the old/new identification signal from the old test console 5. It is determined that it is a console and operates as an old model test unit. When the old test unit 4 is connected to the old test console 5 via the time division switch 3, the old and new identification signals are not transmitted and received, so both operate as before.

〔Effect of the invention〕

As explained above, the present invention enables two different subscriber line testing systems by adding a subscriber line testing system different from the conventional one that has a new and old identification function to a time-division exchange without modifying the existing subscriber line testing system at all. Subscriber line testing systems can coexist within the same exchange. As a result, the addition of subscriber lines, which is essential for exchanges, can be done without regard to changes or improvements to the subscriber line testing system, and the number of test units and test consoles in the subscriber line testing system can be changed accordingly. Regardless of the system, it is only necessary to add the necessary minimum number of testers, and the number of testers required at the same time can be reduced to the minimum necessary.

[Brief explanation of drawings]

The figure is a configuration diagram showing an embodiment of the present invention. 1... New type line test unit, 2... New type test console, 3... Time division exchange, 4... Old type line test unit, 5... Old type test console.

Claims (1)

[Claims] 1. A first line test device and a first line test device installed on the subscriber side and the tester side of the time division exchange
and a second line testing device and a second test operating device, each of which has a new test function added to the first line testing device and the first test operating device, the second test operating device is connected to either the first or second line testing device via the time division switch, the second test operating device sends a new/old identification signal to the other line testing device, If the line test equipment returns a new/old identification reception signal, the line test equipment
If the new/old identification reception signal is not returned, the line test equipment is identified as the first line test equipment, and a predetermined line test equipment is detected according to the corresponding sequence. A subscriber line testing system characterized by performing tests.