JPS61290848A - Subscriber line test equipment - Google Patents

Abstract

PURPOSE:To offer more exactly a service to a subscriber in a short time, also to realize labor saving of a matching test, etc., and to obtain exactly a result of the test by constituting the titled equipment so that a confirmation can be executed by including a processing performed by a switchboard side, when an outdoor worker performs a test of a subscriber's terminal and a subscriber's line at the time of opening of a subscriber, etc. CONSTITUTION:When a subscriber line test equipment LTE receives and accumulates a dial from a subscriber's terminal T to be tested, and thereafter, the subscriber's terminal T to be tested is released, and a release of a subscriber's circuit SUBT and a switch network SWN is confirmed, dial information which is accumulated in a control device CP is transferred. The control device CP connects the subscriber line test equipment LTE and subscriber's circuit SUBT which is connected to a line to be tested, through the switch network SWN, in the same way as if a regular incoming call is generated by using a well-known means, by information which is transferred from the subscriber line test equipment LTE. The subscriber line test equipment LTE sends out a call signal to the subscriber's terminal T, and when the subscriber's terminal T answers, a sound for confirming the connection is made to flow,and thereafter, the subscriber's terminal T is released, and all the tests are ended.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a subscriber line testing device that performs various tests on subscriber terminals in an automatic switching center.

[Background of the invention]

The functions of the subscriber line testing equipment used in conventional subscriber line opening work and outside repair work are described in "C400 type switching equipment" published by the Telecommunications Association of Japan on March 25, 1960, p. 270-2.
As stated in the subscriber line tester on page 72,
This is a characteristic test of only the terminal equipment and subscriber line.

Figure 4 is a system diagram illustrating a conventional subscriber line testing equipment, where T in the figure is a subscriber terminal, L is a subscriber line, MDF is a distribution board, SUB'F is a subscriber circuit, and SWN is a switch network. (exchange center), CP is the control device, L'FE
is a subscriber line testing device.

In Fig. 1, when the temporary installation work of the subscriber terminal T is completed, the installer conducts a test of the subscriber line.
Dial the test special number to connect to the subscriber line testing equipment L'['E installed at the exchange SWH to perform an automatic test. The construction worker tests the subscriber line using the subscriber line testing equipment L'l'E connected to the dial according to a predetermined procedure for testing the subscriber line. Details of the procedure by which the test is carried out are shown in FIG. 5 by a 70-chart. As described above, the conventional subscriber line testing function does not take into account the ability to confirm whether or not measures have been taken on the exchange side to allow incoming calls from other subscribers to be connected.

[Purpose of the invention]

It is an object of the present invention to enable one person to confirm that the work on the local exchange side is correct in addition to testing the subscriber's line when testing subscriber commissioning work or outside repair work. Moreover, it is an object of the present invention to provide a subscriber line testing device that can perform efficient and reliable testing.

[Summary of the invention]

Conventional subscriber line testing mainly focuses on determining whether the subscriber line between the subscriber terminal equipment and the switching center is normal, as well as determining whether the subscriber terminal equipment can handle outgoing and incoming calls. However, the test conducted here had a problem in that no consideration was given to a means to confirm whether or not the exchange was able to connect incoming calls from other subscribers. In order to improve these points, the present invention provides the subscriber line testing equipment LTE with a function that can receive and store subscriber numbers, and redirects the subscriber line under test from the switching center side. This is a subscriber line testing device that allows you to check the actions taken by the switching center.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a schematic diagram showing an embodiment of a subscriber line testing device according to the present invention. In FIG. 1, T is a subscriber terminal;
L is the subscriber line, MDF is the distribution board.

5UBT is a subscriber circuit, SWU is a switch network (exchange center), cp is a control device, and LTFi is a subscriber line testing device.

FIG. 3 shows a case where the subscriber line testing device LTE according to the present invention is applied to an analog exchange that can pass a calling signal for calling a subscriber terminal T through the communication path ■ in the switch network SWN. (Equipment) Connected to the subscriber terminal T, the subscriber line, the distribution board MDF, the subscriber circuit SUB'[', the switch network 5WN, and the subscriber line test equipment LTE] using a known technique. Ru. and the fifth from subscriber terminal (equipment) T.
Tests are sequentially started according to predetermined procedures according to the conventional function flowchart shown in the figure. The flowchart according to the present invention shown in FIG. 2 moves from the part indicated by ■ in the flowchart of FIG. 5.

The flowchart shown in FIG. 2 is an example of the test function part including the case of performing an incoming call test of the subscriber line testing equipment LTE according to the present invention shown in FIG. In other words, if all the test results of the subscriber line and subscriber terminal, which is the conventional test function, are determined to be good from the part (■) in Fig. 5, then the incoming call check is performed to determine whether or not incoming calls from other subscribers are received normally. If you do not want to perform a call test, simply hang up the phone and end the test (second
(■) in the figure. However, when performing an incoming call test to determine whether an incoming call from another subscriber is received (■ in Figure 2), the subscriber line testing equipment L'l'E Dial a predetermined number in order to prepare the circuit for receiving the dial signal from. When the subscriber line testing equipment LTE prepares a dial signal receiving circuit from the subscriber terminal (equipment) T, a dial tone is sent. After hearing this dial tone, the user dials the number given to the terminal (device) under test T, then hangs up the receiver and restores the line. The subscriber line testing equipment LTI receives and stores the dials from the subscriber terminal under test T, and then when the subscriber terminal under test T recovers,
When the recovery of the subscriber circuit 5UBT and the switch network SIN is confirmed, the dial information stored in the control device cp is transferred. The control device cp is subscriber line testing device L
Based on the information transferred from 'l'E, the subscriber line testing equipment L'I'B and the subscriber line connected to the line under test are connected using known means as if a normal incoming call had occurred. The subscriber circuit 5UBTO is connected via the switch network SWN.The subscriber line testing equipment LTE sends a calling signal to the subscriber terminal T, and when the subscriber terminal T responds, it plays a sound to confirm the connection, and then the subscriber All tests end when terminal T is restored.

FIG. 3 is a schematic diagram showing another embodiment of the subscriber line testing device according to the present invention. In Figure 4, 'I'J'f'
C is a test connector, MM is a memory device, and the same reference numerals as in other FIG. 1 indicate the same or equivalent parts.

FIG. 3 shows a case where the subscriber line testing device LTB according to the present invention is applied to a time division exchange that cannot pass a calling signal within the switch network SWN. From subscriber line testing equipment L
After dialing a predetermined number to connect to the TE, the controller CP connects the subscriber circuit SUB' via the switch network SWN to the subscriber circuit SUB' according to known techniques.
Connect between L' and the subscriber line testing equipment LTEO. At the same time, the switch network SIH path ■ is time-division multiplexed, and since it supports subscriber lines and cannot be tested using analog signals, the subscriber line side is switched from the subscriber line equipment LTIii to directly test the subscriber line. Pull into the device ITE. After that, subscriber terminal T and subscriber line testing equipment LTE
As explained in FIG. 1, various tests are executed according to predetermined procedures. When the subscriber line test with a series of subscriber terminals T is completed and the subscriber terminal T is restored after dialing the number assigned to the subscriber terminal T to perform an incoming call test, the subscriber line The test equipment LLIIB receives and stores the dialed numbers, verifies that the subscriber circuit SUB'l' and the switch network SIN are restored, and then connects the test connector TS'.
The accumulated information is transferred to the control device cp via l'C.

The control device cp uses the information transferred via the test connector '1'S'l'C and the subscriber information stored in the memory device MMK, the subscriber circuit SUB'l' and the subscriber line testing device LTlii. switch network SWN between
, and calls the subscriber terminal T. Then, a connection confirmation sound is sent from the subscriber line testing device L'l'lil to the subscriber terminal T via the path (3) of the switch network SIN.

〔Effect of the invention〕.

As described above, according to the subscriber line testing device of the present invention, when an outdoor construction worker tests subscriber terminals and subscriber lines for subscriber commissioning, etc., it is possible to check the processing performed on the exchange side as well. By doing so, it is possible to provide reliable services to subscribers in a short time, save labor in matching tests, etc., and have the effect of obtaining reliable test results.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the subscriber line testing device according to the present invention, FIG. 2 is a flowchart illustrating the operation procedure of the subscriber line test according to the present invention shown in FIG. FIG. 4 is a system diagram illustrating a conventional subscriber line testing device, and FIG. 5 is an operational procedure of the conventional subscriber line test shown in FIG. 1. It is a flowchart which shows. T...Subscriber terminal L...Subscriber line 5UBT...Subscriber circuit SWN...Switch network (exchange center) L
'l'E...Subscriber line testing equipment '1'S'l
'C...Test connector CP...Control device MM...Memory device

Claims (1)

[Claims] A subscriber line testing device that is installed in a switching center and connected to a subscriber line, automatically performs various tests on the subscriber terminal, and notifies the subscriber terminal of the judgment results. In addition to the various test functions performed by the test, there is also a function to receive and store dial information that arrives from the subscriber terminal after the test is completed, and a function to restore the subscriber terminal and restore the line after the accumulation of dial information is completed. Once restored, a function was added to transfer the accumulated dial information to the exchange control device, allowing the subscriber terminal corresponding to the dial information to call back and confirm the connection in the same way as if there was an incoming call. A subscriber line testing device characterized by: