JPS61280151A - Remote maintenance testing instrument - Google Patents

Abstract

PURPOSE:To make a remote concentrated test without touching other repeater stations by installing a line signal transmitter and a data channel only in a concentrated testing station and an objective station of testing. CONSTITUTION:In testing of apparatus in the station after talking, intra-office apparatus test command is sent to a central processing controlling device 7a of an objective station of a testing B through the route 1 after establishing data link. On receiving this command, the objective station of the testing B calls from a line signal transmitter 6b to connect a monitor line for testing between a trunk for transmission 11 and the concentrated testing stand 20 of the concentrated testing station A, and sends out the access number of a transmitting trunk for a test connection 10b. When a speech path 2 is connected, an answer signal is sent out from the line signal transmitter 6c of the concentrated testing station A, and transferred to the objective station of testing B through a tandem station (c). A trunk to be tested 17 is pulled into a trunk pulling switch 13 by controlling a speech path and intra-office apparatus testing unit 16, and a trunk for testing 18 is connected to the testing unit 16.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention performs each test of the subscriber line, communication path, and internal equipment of a test target station such as a long-distance non-stationed telephone station by concentrating it on a remote centralized test station. Regarding remote maintenance testing equipment.

[Background of the invention]

In order to improve switch maintenance work, it is necessary to enhance remote monitoring, control, and testing functions, mechanize manual work, and enable technical support from a center by skilled engineers. Regarding conventional remote maintenance test equipment, for example, see Electric Corporation Tsuken Research Practical Application Report Vol. 31 No. 1] (1982) P.
81-93 "Maintenance test method for digital subscriber line exchange"
A device that performs a test using a dedicated test line is generally known, as described in . However, this is inconvenient in switching networks where dedicated test lines and transmission lines cannot be provided.

[Purpose of the invention]

An object of the present invention is to provide a remote maintenance test that enables remote centralized testing without establishing a dedicated line between a remote centralized testing station and a test target station, and without having any effect on the relay station interposed between the two stations. KToru will provide the equipment.

[Summary of the invention]

The present invention provides a line signal transmitter and a data channel in a remote centralized test station and a test target station, sends a signal from the line signal transmitter, and uses normal call processing control to connect the remote centralized test station and the test target station. This is a remote maintenance test device that enables remote centralized testing by setting communication channels for sending and receiving test information and for test monitoring.

[Embodiments of the invention]

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

First, FIG. 1 is a relay system diagram for subscriber line testing showing an embodiment of the remote maintenance testing device according to the present invention.

In Figure 1, A is a centralized test station, B is a test target station, and C
is a tandem station, D is a centralized test stand, 1 is a helad set, 2 is a CRT, 5 is a typewriter, 4, 4eL is a data channel, 5.5α is a switching device, 6, 6eL, 6b
, 6e is a line signal transmitter, 7, 7a is a central processing control unit, 8 is an incoming trunk or bidirectional trunk (digital or analog), 9, 9G is an outgoing trunk or bidirectional trunk (digital or analog), 10, 1
04, 10k is the outgoing/incoming trunk for test connection, 1] is the outgoing trunk, 12 is the line test unit, 13 is the subscriber line and trunk entry switch, 14 is the subscriber trunk under test, and 15 is the subscriber under test. be.

FIG. 2 is a diagram showing the settings of the data/command transmission/reception route (2) and the test monitor line route (2) of FIG. 1, and the communication sequence in data transmission/reception. The operation procedure of the remote subscriber line test of the apparatus shown in FIG. 1 will be explained below using the communication sequence shown in FIG. 2.

In the remote subscriber line test, the centralized test station A shown in Figure 1
For example, subscriber number 4 accommodated in test target station B
Subscriber trunk 1 under test of subscriber under test 1-2154
The case of testing 4 will be explained. From centralized testing station A, CRT 2 or typewriter 5 with keyboard on centralized testing stand
The station designation code (for example, OFC: AAA) and subscriber number 41-2134 are specified by , and a subscriber test command (for example, LTT: MAN, D#=2134) is input.

At this time, the central processing control unit 7 outputs the station number of the test target station B.
``41'', the access number ``2999'' of the incoming trunk 10α for test connection, and the subscriber number ``2154'' of the subscriber 15 to be tested. Next, the central processing control unit 7 receives the line signal. Activate the tandem station C using the transmitter 6, and select the selected number (test target station number 10, access number of the incoming trunk 10α: 4l-29) using the register signal in the same way as for the trunk line.
99). Tandem station C receives these selection signals through normal call processing control, and has station number "'4".
1" to the test target station B. Next, the call is routed to the test target station B via the outgoing and incoming trunks 9.8, regardless of analog or digital, and the test call is routed to the test target station B via the incoming trunk 9.8 using normal call processing control. 1011.At this time, the central processing control bag of test target station B [7g is the incoming trunk 10
a is for test connection, and the line signal transmitter 6
A response signal is sent via a. When the acceptance signal is sent out, it is detected by the central testing station A under normal call processing control, and it is confirmed that the communication path (2) between the trunk 10 and the trunk 108 has been set (physical level). After this,
The central processing control unit 7.76 of each station switches the switching device 5.5a within the station to the data channel 4.4aK to establish a data link (data command route) between the central processing control units 7 and 7a. Next, the test command information, that is, the subscriber line test and the telephone number (L) of subscriber 15 to be tested.
TT: MAN, DN, 2134) is transferred from the central processing control unit 7 to 7a via the data link. When identifying the subscriber line test command from the centralized test station A, the central processing control unit 76 causes the line signal transmitter 6h to send out a call signal and a selection signal in the form of a register signal from the test outgoing trunk 1. conduct. The cash register at this time”
The star signal is the access number "42-9999" of the test incoming trunk 10A. Normal call processing control detects these signals and routes them to the test terminating trunk 10k. Next, when the central processing control unit 7 learns of the incoming call to the trunk 10A, it transmits a response signal from the line signal transmitter 6CK. In normal call processing control, this response signal is relayed by the test target station El, and a communication path between the trunk 1] and the trunk IOB is set (setting of the test monitor line route 2). When the central processing control unit 7a detects this response signal,
Based on the information (subscriber line test and subscriber number under test) received previously via the data link ■, connect the line test unit 12 and the subscriber trunk 14 under test via the subscriber line entry switch 13. do. Now routes ■ and ■ shown in Figure 1 can be set, and the test preparation connection is completed. Since the remote subscriber line test is in a response conversation format, when the above preparation connection is completed, test item information (loop resistance measurement, line capacitance, insulation resistance, dial test, call test, etc.) will be sent to the central test station as a response message. CR of A's centralized test stand
displayed on T display 2. The maintenance person at centralized testing station A must input test type commands according to the measurement items.
Accordingly, various measurements are performed in the line test unit 12 of the test target station B, and the results can be converted into digital quantities and transmitted to the central processing control unit 7 via the data link (2). The measurement result data is displayed on the CRT display 2.
will be displayed.

Furthermore, the subscriber under test 15 called via route (2) and the maintenance person at central testing station A can also talk on the phone.

The test progresses as described above, and when the measurement items are completed, a measurement end command is input to disconnect the data link (data link level), then restore the communication path and end the test (physical level). ).

Next, FIG. 3 is a relay system diagram for testing communication paths and in-office equipment, showing an embodiment of the remote maintenance testing device according to the present invention. In FIG. 3, the same reference numerals as in FIG. 1 indicate the same parts, and 16 is a channel internal equipment test unit, 17 is a trunk under test, and 18 is a test trunk.

The operation procedure for the communication path/internal equipment test shown in FIG. 3 can be performed in the same manner as the remote subscriber line test shown in FIG. The operation will be briefly explained below.

After establishing the data link in the communication path/internal equipment test,
The station equipment test command is sent to the central processing control unit 7α of the station to be tested B via route (2).

At test target station B, this command is received by the line signal transmitter 6h in order to connect the test monitor line between the outgoing trunk 1 and the central testing station A, and the outgoing trunk for test connection is called. 10 Send A's access number. When the communication path (2) is connected, a response signal is sent from the line signal transmitter 6c of the centralized test station A, and is transferred through the tandem station C to the test target station J4C. Then, the control of the communication path/internal equipment test unit 16) pulls the trunk under test 17 into the trunk pull-in switch 13,
The test trunk 18 is connected to the test unit 16.

Similarly, remote communication path and in-office equipment tests are conducted in a response conversation format, so the normality of the communication path equipment can be confirmed by inputting commands such as call origination, dialing (answering), and disconnection of the call. . This example shows a test of the outgoing trunk under test 17, but the maintenance personnel at the central testing station A use the communication path created in this way to test the dial tone D.
T connects the path and connects the equipment (in this example, the outgoing trunk 17
) can be checked for normality. From the above explanation, it can be seen that the communication path/internal office test can be realized using the same method as the remote subscriber line test.

〔Effect of the invention〕

According to the present invention, by simply installing a line signal transmitter and a data channel only at the centralized test station and the test target station, remote centralized testing is possible without making any changes to other relay stations. Station monitoring can also be realized without installing a specific line.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram for a subscriber line test showing an embodiment of the remote maintenance test device according to the present invention, and FIG. 2 shows a communication sequence in setting the data/command transmission/reception route and the test monitor line route in FIG. 1. Figures 1 and 2 are diagrams of a relay system for testing communication paths and in-office equipment, showing an embodiment of a remote maintenance testing device by Akiyoshi Kinoe. 1...Headset 2...CHF2...
Typewriter 4, 4a...Data channel 5.
5z-...Switching device 6.6α, 6b, l)c...Line signal transmitter 7.7
g-...Central processing control unit 8...Incoming trunk or bidirectional trunk 9.9α...
- Outgoing trunk or bidirectional trunk 10.10a, I
OA...Outgoing/incoming trunk for test connection 1]...Outgoing trunk 12...Line test unit 13...Subscriber line and trunk entry switch 14
...Tested subscriber trunk 15...Tested subscriber 16...Call path/internal equipment testing unit 2nd district

Claims (1)

[Claims] In a remote maintenance test device that performs centralized testing of subscriber lines, communication paths, and in-station equipment of a test target station from a remote centralized test station, a line signal transmitter and a data channel are installed in the remote centralized test station and the test target station, and the line A signal is sent from the signal transmitter, and a communication path for transmitting and receiving test information and for test monitoring is set up between the remote centralized test station and the test target station using normal call processing control, and the test target station is installed within the test target station. The test information measured at the test target station can be transmitted over the phone without establishing a dedicated communication line or data transmission line between the test target station test equipment installed at the test target station and the remote central test station test equipment installed at the remote central test station. 1. A remote maintenance testing device characterized in that it enables remote centralized testing by transmitting data via a relay line.