JPS59123353A - Communication path connecting system of centralized subscriber line test - Google Patents

Abstract

PURPOSE:To connect easily the communication path by connecting and disconnecting simultaneously a voice signal channel for test and a control information channel for test. CONSTITUTION:The voice signal channel V-ch for test and the control information channel C-ch for test are provided between a centralized subscriber line test device MLTC and an adaptor LTAP for subscriber line test of a local station to which a subscriber line to be tested is connected via a relay station and a local station. The train of a relay station is set by using the V-ch as a major channel and the C-ch as a subordinate channel by means of simultaneous switching and an interstation signal for the train connection is transmitted by using an individual signal of the V-ch.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention is directed to a system in which subscriber line testing equipment for a digital switch is centralized, and a method for testing the connection between the centralized subscriber line testing equipment and the test adapter. Concerning long-lasting communication paths.

(2) Background of the Technology Generally, in a digital exchange system, a centralized subscriber line test method (71) as shown in FIG. 1 is used in the subscriber line test cable. In FIG. 1, SUB is the subscriber, and sLc is the subscriber green time Ii! i't,
LC is subscriber line concentrator, LTE is subscriber line test case 1
′! ,,, NW is the switching network, DT is the digital
Terminal, LTAP is subscriber line test adapter, ML
TT is a trunk for testing IJ lines throughout the year, and MLTC is a centralized subscriber line testing equipment. In the system shown in FIG. 1, the centralized subscriber line testing devices ML and TC provide local station train setting instructions for connecting paths to desired local stations, local station subscriber line test instructions, and test results. The relay station connects the bus between the MLTC and the route to the desired local station based on the local station selection information of MLTC7:J-, etc. In addition, the subscriber line test adapter LTAP installed at the local station is
Receives a test instruction from the LTC and sends the test instruction to the subscriber line test equipment LTE of the local station,
Receives throat test result from LTE and sends it to MLTC.

(3) Prior art and problems In the conventional centralized subscriber line testing system, the connection between the centralized subscriber line testing device M L 'l' C and the local station subscriber line testing adapter L 'l' A P As a communication path connection method, a method such as switching the test audio signal and test control signal to the same channel and connecting them is used.
I hadn't.

(4) Object of the Invention The object of the present invention is to provide a centralized subscriber line testing device for testing subscriber lines of a plurality of local stations, which includes two channels: a test audio signal channel and a test control information channel. The object of the present invention is to provide a communication bus connection method that can connect and disconnect these two channel buses simultaneously as if they were one path.

(5) Structure of the Invention The present invention provides a prefectural subscriber line testing device that displays local station train setting instructions, local station subscriber line trial run instructions, and test results, and a centralized subscriber line test. Based on the local station selection information from the device, a centralized subscriber line test equipment is installed at the local station and a relay station that connects the path between the enemy and the route to the desired local station. It receives test instructions from the local station's subscriber line testing equipment and sends all test instructions to the local station's subscriber line testing equipment, and also receives all test results from the local station's subscriber line testing equipment and sends them to the centralized subscriber line testing equipment. Concentrated subscriber line testing system V that performs subscription name-green testing of multiple local stations using a centralized subscriber line testing adapter to send out centralized subscriber line test equipment and local station centralized subscriber line Two channels, a test audio channel and a test control signal channel, are set up between the test adapter and the two channels are connected simultaneously to each channel. - A communication bus removal M method for the concentrated access beachflies 1p test is provided, which is characterized by connecting and disconnecting buses simultaneously as if they were one bus.

(6) Redundant embodiment of the present invention ν↓Concentrated subscriber line power (exp.) as an embodiment: i
Is the im bus connection method in the drawing? Using tsum is explained below. The 11-person test system to which the present invention is applied is similar to the system shown in FIG. do/
Fig. 2 shows a simplified block diagram. As shown in FIG. 2, in the centralized subscriber line trial communication path connection system according to the present invention, a centralized subscriber line testing device MLTC and a subscriber of a local station to which the subscriber line to be tested is connected Between the line test adapter LTAPO, there is a termination 1.
Two channels, a test audio signal channel V-Ch and a test control information channel C-ah, are provided via the station and the local station, and train connections are made using two points each for individual signals corresponding to each channel. It will be done.

If the direction from MLTC to LTAP is the forward direction, and the direction from LTAP to MLTC is the reverse direction, the individual No. 43 td corresponding to each channel will be K as shown in FIG.

In other words, the audio signal channel (V-Ch) correspondence is V
ab: Reverse direction a point Vbb for V-ch
: Reverse direction b point 4 point V a f for V-ch
2) For V-Ch) bile direction a point Vbf
: Forward direction b for V-ch: /l・In addition, control information channel (C-ch) support is Cab:
Reverse direction a point ebb for C-ah: C-
Reverse direction b point Caf for ch: C-ch
Forward direction a point Cbf: C-ch river ii1' direction b point 8154 Figure shows the concentration 1 person 13 line test length fmata 11. T, C and '1 given 1:
, the operation sequence of individual No. 413 between the processing units iJc CP RO of the stations is shown. In FIG. 7, normal duty I/i is the case where the test instruction from M L 'L'C is normally executed and completed, and forced disconnection on the station side is when the test instruction from M L 'L'C is completed. This is when the test is canceled due to instructions from the relay station.
This is a case of transmitting the blockage state to the 'I' C, and abandoning the test midway is done by stopping the test according to instructions from the '1' C Zuno et al.

The train setting of the relay station is V as shown in Fig. 4.
-ch is the main channel and C-'chQ is the secondary channel, and 2-channel time switching γ is performed, and 7 of the train connections are performed.
The inter-office signal transmission is performed by individual GIj@ of V-ch. Although the operation sequence of individual information between the relay station and the local station is not shown in the diagram, the train settings for the local station are medium-sized, and two channels are connected simultaneously between the incoming line from the station side and the LTAP side. . FIG. 5 schematically shows a trial operation sequence between the MLTC and the relay station, between the relay station and the local station, and between the local station and the LTAPO.

(7) Effects of the Invention According to the present invention, it is possible to simultaneously connect and disconnect two channels, the test audio signal channel and the test control information channel, as if they were one path. A communication path connection scheme in subscriber line testing may be provided.

Although this method has been explained using two channels, it is also applicable to simultaneous connection of two or more channels.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a general centralized subscriber line test system; FIG. 2 is a diagram showing the configuration of a centralized subscriber line test system to which the communication path connection method according to the present invention is applied; Figure 3 shows the relationship between the individual signals corresponding to the channels in Figure 2, and Figure 4 shows the relationship between the centralized subscriber line test equipment and the relay station (7).
1rr5-Jajj of individual issue 46 corresponding to Yaru! Figure 5 is a diagram showing (:) omitted the operation sequence in the communication path connection method by Akira.

Claims (1)

[Claims] Based on the local station train setting instructions, the local station subscriber line test key, and the display of test results, the centralized subscriber line test equipment performs a relay station that connects the path between the line test equipment and the route to the desired local station; a subscriber line test equipment that is installed at the local station and receives test instructions from the centralized subscriber test equipment; 1vj, sends test scissors instructions to Sakae, receives test results from local JA3 subscriber line test equipment fj'E, and centralizes another person ffM,
In a centralized subscriber line testing system that tests the subscriber lines of multiple local stations using a centralized subscriber line testing adapter that sends data to the test equipment R-(-), the centralized subscriber line testing device and the local station Two channels, a test audio channel and a test control information channel, are provided between the test adapter and the test adapter, and the individual signals corresponding to each channel are controlled in the same way at the same time. A communication vanu connection system for centralized subscriber line testing, characterized in that two channel paths are simultaneously connected and disconnected as if they were one path.