JPS5961259A - Method for constituting subscriber's leading-in link - Google Patents

Abstract

PURPOSE:To attain the leading-in test of one subscriber even if another test link is in using by dividing the test link into a test link from the subscriber's side and the one from the maintenance side and connecting a switching circuit for these test links. CONSTITUTION:In case of a test from the subscriber's side, the subscriber 11 e.g. is lead in a test link 40 through a line circuit 21 and a contact sw of a test link switching circuit 61 and connected to a test device 5a1 through a contact ta1 by the operation of a test relay to execute a prescribed speech path test. At the test from the maintenance operator side, the test relay is actuated in accordance with the operation of the maintenance side and a switching relay of the circuit 61 is actuated. Subsequently, the subscriber's leading-in relay of a circuit 21 is actuated for instance, so that the subscriber 11 is lead in to a test device 5b1 through the contact sp of the circuit 21, the contact sw of the circuit 61, a test link 41, and a contact tb1 to execute the prescribed speech path test by the maintenance operator.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a subscriber attraction link configuration method, and more particularly to a subscriber attraction link 1βf configuration method applicable to subscriber attraction testing in a digital switching system. The subscriber attraction tests conducted in 2017 can be roughly divided into the following two types. 1) is something that the maintenance person in the station does not have to be concerned with or cannot be concerned with, such as sending out an alarm to prevent the handset from being disconnected, and something that the maintenance person from the subscriber side is concerned with, such as a call path connection test.

These include automatic subscriber call path tests, automatic subscriber line tests, etc. (hereinafter referred to as tests from the maintenance personnel side).

This type of subscriber attraction test will be explained with reference to FIG. 1, which shows an example of a conventional subscriber attraction link configuration method. In FIG. 1, a plurality of n (for example, n=64) subscribers 11%In each have a line circuit (hereinafter referred to as LC) LC+
2I to LCn are accommodated in a digital communication path switch (hereinafter referred to as TDSW) 3 via 2n k - forming a communication path of a general digital switching system.

In addition, the make side of the contact point SP of each LC's subscriber pull-in relay (not shown) is 64 sets (therefore, ′ζ, ″).
It is double-connected and pulled into the test link 4, and then e
Pig test link 4 is test relay 'I'A, TA.

and TB, , TB, (none shown)
each contact point ta,, ta2 and tb,, tt)
, respectively through the test equipment (hereinafter 'l'5T) TST
A,5a,,TSTA.

5a, OhjhiTsTB, 5b, ,'l's'l'B
, 51) t and then configure the subscriber attraction link. Here 'I'81'A.

5a1, 'I'STA, and 5a2 are respectively subscriber communication i'tt! i-road tester.

For testing from the subscriber side such as communication line continuity tester, TS
TB, 5b, T8Tb, 5b are used for testing by the maintenance personnel, such as a communication path connection tester and an automatic subscriber communication path tester, respectively.

When performing all tests from the subscriber side, for example, after the subscriber 11 makes a call, the local controller (not shown)
hc according to the instructions of 2. When said subscriber attraction relay of said subscriber 1. is operated, said subscriber 1. is drawn into the site test link 4 by the contact sp, and T
The communication path to DSW3 is split. Subsequently, when the test relay, for example the test relay TA, is operated according to instructions from a central control unit (not shown), the test link 4 is connected to the subscriber channel tester T via the contact ta.
81'A.

5a, and the subscriber 1. A call route test will be conducted. The same applies to tests from other subscribers (phone-removal prevention alarm sound transmission 2 communication path continuity test, etc.).

Further, when a maintenance person performs a test, the central control unit controls the test relay 1'13, for example, the test relay 1'13. y.

When the subscriber pull-in relay of, for example, LCI 2+ is operated according to instructions from the local controller, as in the case of the test from the subscriber side,
The subscriber 11 is contact point SP, TESS) +7 link 4. Communication path connection tester 'l'8TI3゜5b through contact tb.
1 and a predetermined test is conducted by a maintenance person. The same applies to other tests from the maintenance personnel (automatic subscriber call path test, automatic subscriber line test, etc.).

However, in this example, the subscriber attraction system uses all the same test links in the test from the subscriber side and the test from the maintenance side, and the subscriber attraction link is divided into 64 subscriber units. Due to the dual connection, if one subscriber goes off the hook, for example, the link for sending the alarm sound will be closed, and the link will remain until the subscriber is locked out or the link is restored (released). It is difficult to attract 63 subscribers, and the scissors cannot be used. Therefore, even if the maintainer attempts to perform an automatic subscriber line test at this time, all of the subscriber groups (64 subscribers) will not be linked, and the automatic subscriber line test will be skipped. The drawback was that test settings had to be made each time.

An object of the present invention is to solve the above-mentioned drawbacks by dividing the test links into two groups, one for testing from the subscriber side and one for testing from the maintenance side, and providing a switching circuit for these test links.
To provide a subscriber pull-in link configuration method f that allows a certain subscriber to conduct a pull-in test for other subscribers that are multiple-connected to the subscriber even when one test link is opened and in use. According to the subscriber pull-in link configuration formula according to the present invention, in a digital switching system, there is a multiple pull-in circuit for pulling each subscriber to a test device, and a test device connected to a test device for testing from one subscriber side. 2 groups of test links 7 of the 1st test link and the 2nd test link connected to the test equipment for testing from the maintainer flllJ, between each said lead-in circuit and the test link of the previous HL'r 2 group; The provided test link switching circuit makes money, and the test link switching circuit switches and connects the retracting link of the retracting circuit from the first υ/ to the second link according to instructions from the maintenance person. This is a full feature.

Next, we will discuss the subscriber attraction link scouting method of the present invention in the second section.
This will be explained with reference to the figures.

FIG. 2 is a block diagram showing an embodiment of the subscriber attraction link configuration method of the present invention. In the same figure.

It has the same configuration as the conventional subscriber attraction link configuration method, and each of the nine items has the same symbol 't' as in FIG.

LC,2,,~J,Cn2n (here n-64)
are respectively test link switching circuits (hereinafter referred to as 8W) S
W, 6. .

~5Wn5n and the SW, 6I, ~5Wn6n
are a switching relay (not shown) and its contact point s, respectively.
w, and the switching relay is operated by a generally known method when performing a test from the maintenance personnel side. Also, the break side comrades and meter side comrades of the corresponding contacts SW are connected to two groups of test links 40 and 41 in a duplex manner (that is, 6 sets, 1 set), and furthermore, the death links 40
and 41 are contact points La1. ta2 and tb,
, tb, 1 via 1'S'I'A.

5 al, TSTA25 a2 and T8T, B,
5b,,T8'l'J3.5b.

connected to.

The operation when testing from the subscriber side is similar to that in FIG. That is, for example, subscriber II is LC+
21, is drawn into the test link 40 via the contact SW (pre, rear side) of 5WI6+, and the test relay TA,
Contacts ta+t: 1, '8TA, 5 through the operation of
a, and a predetermined communication path test is performed. When a test is performed by a maintenance person, the central control unit g (not shown) activates a test relay (for example, LrJ′T 13 + f %) in response to an operation by the maintenance person, and sw; Make the switching relay f I11,
According to instructions from a local controller (not shown), for example, the subscriber pull-in relay of LC2 is connected to pfl+.
Therefore, the subscriber 11 connects the contact S of NrlC2,
p, 5W16□ contact SW (/'-ri(ill),
f st')nk 41. TSTB via contact tb,
, 5b, and a predetermined call path connection test is performed by the maintenance person.

In this embodiment, the operation 4 old control of the subscriber draw-in relay, the test relay, and the test link switching relay are all generally processed by software.

i.e. local controller based on the program,
A control device such as a central control device performs control.

Alternatively, the test link switching circuits may be included in corresponding line circuits.

As is clear from the above explanation, according to the subscriber pull-in link configuration method of the present invention, the links are divided into two groups, one for testing from the subscriber side and one for testing from the maintenance side, and these By providing a link switching circuit, even if a certain subscriber is using one test link, the pull-in test for other subscribers in the subscriber group that is dually connected to that subscriber can be performed. This eliminates the need to reconfigure subscriber tests, which were previously skipped due to all link blocks for that subscriber group, which is extremely effective in preventive maintenance of faulty lines or early detection of faults in terms of maintenance operations. The effect is that.

[Brief explanation of the drawing]

FIG. 1 is a 4A configuration diagram showing an example of a conventional subscriber attraction link 41 configuration system, and FIG. 2 is a configuration diagram showing an embodiment of the subscriber attraction link configuration system of the present invention. , 11.~1n...subscriber, 2I,
~2n...Line circuit, 3...Digital channel switch, 4.40.41...-Test link, 5 aI + 5 at + 5 bl +
5 bl... Test equipment, 61+~6n...
...Test link switching circuit. Kaya l Utsume 2 fig.

Claims (1)

[Claims] In a digital switching system, a plurality of lead-in circuits each lead a subscriber to a test equipment, a first test link connected to a test equipment for testing from the subscriber side, and a first test link connected to the test equipment for testing from the maintenance side. The test link switching circuit comprises two groups of connected second test links, and a test link switching circuit provided between each of the lead-in circuits and the two groups of test links, and the test link switching circuit is connected to the maintenance circuit. A subscriber lead-in link configuration method characterized in that the lead-in link of the lead-in circuit is switched from the first link to the second link in response to an instruction from a subscriber.