JPS62286352A - Intra-office loopback test system - Google Patents

Abstract

PURPOSE:To execute an inter-own station test for a specific line without causing any hindrance to the operation of other lines by providing a line loopback control means and a common line signal loopback control means and applying transmission/reception of a common line signal between a line to be tested and a test line in a store and forward switching program. CONSTITUTION:When a test call is performed from a test board 10, a call processing control section 91 applies connection similar to an incoming call from a conventional line to the incoming call from a test board line 11, and a common line signal to a tested line 6 is sent to a common line signal loopback control section 94. In this case, the common line signal loopback control section 94 compares a test line number registered already during test with a line number added to common line signal data. Then in case of coincidence with any line number, the corresponding line number is returned to a call processing control section 91 while being added to the common line signal data. Thus, an expensive opposite station simulator or a troublesome test criterion job is not required and the intra-office line test is conducted simply.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention Technical Field The present invention relates to an intra-office loopback test system, and includes 1) VL? of the common line signaling system. ! This paper relates to an intra-office loopback test method in a 43-channel exchange program-controlled electronic switching system.

Conventional technology Previously, the intra-office loopback test method for separate electronic exchange systems was the second
This is done using the configuration shown in the figure.

In the figure, numeral 1 is a time division switch, which interconnects each line. 4 (U line, which can be freely connected to the local station'fA6.7 by the line return device i! J to control section 91:
It works. The time division switch 1 also has this call processing control section 91.
Controlled by The storage/exchange block 11gram 9 (further includes a line loopback control @ section 92, which controls the connection status of the line loopback device 5.A test stand 10 is provided, and generates instructions for an in-office loopback test. 11 is a test bench line, which connects the test bench 10 and the time division switch 1.

In such a configuration, when an intra-office IJ7 return test instruction is issued from the test stand 10, the line return control unit 92 operates to control the line return device 5. As a result, the designated '#1 test circuit 16 and the test circuit 'fA7 are connected to form an intra-office return line. In addition, during normal times, it is line 6! ! i14 is connected.

In response to this, the test line 7 is connected to the automatic response terminal 8, and the line under test 6 is connected to the test stand line 11. By doing so, it becomes possible to perform an intra-office loopback test on the line under test 6 by making the call processing control section 91 work one time.

The intra-office loopback test method shown in FIG. 2 is applied to tests in electronic switching systems using individual line signaling rather than common line signaling.

However, CC[TTNo.6 and CC(TTNo.7)
In an electronic switching system using a common line signaling system that complies with the signaling systems such as
The arrangement shown in FIG. 2 cannot be applied since this is done by a separate common line signaling link. Therefore, in the conventional non-return line test method described above, which requires a simulated visit to the partner station to terminate and test the common line signal link and the line under test, ξ Requires a communication signal link and a partner station device to terminate the line, but the partner station device must have common line signal information and a certain call processing function, making it complicated and expensive. Become. In addition, for testing, connect the common line signal link and line to the other station equipment, and use data to identify the line under test based on the line label in the common line signal received from the signal link under test. It is necessary to enter the shade, placing additional preparatory work.

In particular, when attempting to test added lines after the electronic switching system has entered service, - Since it is not possible to remove the signal link in operation from service, prepare a separate signal link for testing. It is necessary to change the signal routing data for the line under test for testing and connect it to the partner station equipment, making the procedure even more complicated. In addition, since the test will be conducted using signal routing data that is different from the one in use, the results will not be completely reliable.
It has the disadvantage that it is difficult to say that it is suitable.

Purpose of the Invention The present invention has been made to eliminate the above-mentioned drawbacks of the conventional ones, and its purpose is to provide a common method that allows line testing within one's own station to be carried out extremely simply and at low cost. An object of the present invention is to provide an intra-office loopback test method in a line signaling electronic switching system.

Another object of the present invention is to conduct an in-office test of a specific line without causing any similar trouble to the operation of other lines even after the electronic switching system enters service. The purpose is to provide a method.

Structure of the Invention According to the present invention, there is provided an intra-station loopback test method for a store-and-forward program-controlled electronic switching system using a common line signaling system, in which a line under test is loop-connected to a test line within the local station system. A line loopback υ control means for controlling the line loopback υ and a common line signal loopback 1i1111111 means for controlling the transmission and reception of common line signals between the line under test and the test line are installed. +'
An intra-office return test method is provided, which is characterized in that the transmission and reception of common line signals between the line under test and the test line described in +i+ is carried out entirely within the store-and-forward program via the ζ line signal link. It will be done.

Effect of the Invention The intra-station loopback test method according to the present invention is as follows: fJ+
flF'lru.

When a loopback test is started for a certain line by the test stand or the cloak, the line loopback 1J control means drives the line loopback device to perform a loopback test that connects the line under test, which is the line under test, to the test line. When creating a loop, the same II)
The identifier data of the line under test and the test line (hereinafter referred to as
The line number 1'') is notified to the No. 2 return control means. From then on, when the common fa number is sent, the common line signal return control 2 (1 part (also called the line number during the test) is notified. If the check is made and this is the line under test, the common line signal information is edited as if this were a signal received for the opposite line, and the process is continued to regular signal reception processing.

When the test stand or a command instructs the end of the test, the line return control unit cancels the return loop and instructs the common line signal return control unit to resume normal signal transmission and reception processing for the corresponding line.

Example Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, and parts equivalent to those in FIG. 2 are designated by the same reference numerals.

In the figure, time division switch 1. Common line signal terminal 2, automatic response terminal 8. Call processing control unit 91. Common line signal control section 9
3 is for realizing a normal call connection operation, and its various functions are equivalent to the conventional ones regardless of the presence or absence of the intra-office loopback test function according to the present invention.

Furthermore, as is clear from a comparison with the block diagram of the conventional example shown in FIG.
The same hardware as in the conventional individual line signaling system is also applied to the CCITTNQ6 and N (17 quasi-common line signaling system.In addition to these configurations, the present invention also includes a common line signal control unit. 93 and a common line signal return control section 94 are provided.

In such a configuration, the common line signal is usually
In the case of fo, 7 signaling system, it is generated from the call processing program (call processing control unit) 01 equivalent to level 4 ringing function and handed over to the common line signal control program (common line signal control unit) 93 equivalent to level 3R function. (It is sent to the common line (third link 3) via the line signal terminal 2 (■ in FIG. 1).

When performing an intra-office loopback test, when the test stand 10 specifies the line on which the loopback test should be performed (■ in Figure 1), the line loopback control unit 92 drives the line loopback device 5 to determine which loopback test should be performed. A return loop is created between the line under test 6 and the test line 7, and at the same time, the line numbers of both the corresponding lines 6 and 7 are transmitted to the common line signal return control unit 94, and these numbers are n81 and the common Instructs to turn back the line signal (■ in Figure 1).

Next, when a test call is made from the test bench 10, the call processing control unit 91 performs the same connection operation as when a call is received from a normal line. 1111, and the common line signal for the circuit under test "a6" is sent to the common line signal return control unit 94 (■ in FIG. 1).At this time, the common line signal return control unit 94 Compare the test line number that is already registered and the line number attached to the common line signal data, and if it matches any line number, add the corresponding line number to the common line signal data. and sends it back to the call processing control unit 91 (■ in Figure 1).The common line signal of the line without test registration is sent to the common line signal link 3 as usual.The returned common line signal is Received call processing system tI
The I group 91 performs the same connection operation as when receiving a normal common line signal.

When the test stand 10 instructs the test stand 10 to terminate the test, the line loopback control unit cancels the line loopback and sends a message to the common line signal loopback control unit 94 regarding the corresponding signal to terminate the test. Notify the line number (■ in Figure 1).

Thereafter, signal loopback on the relevant line is canceled and normal signal processing resumes (■ in Figure 1).

ADVANTAGES OF THE INVENTION As described above, the present invention has the following various effects. That is, it is possible to easily perform a line test within the own station without requiring an expensive remote station simulator or frequent test preparation work. In addition, a line test can be performed on a common channel signaling system line using the same procedure as in the case of the repeater rA signal system. Furthermore, even after the electronic switching system enters service, it is possible to perform in-house testing of a specific line without causing any disruption to the operation of the local line.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram for an intra-station loopback test using a conventional individual line signaling system. Main part code 31 Light 3...Common line No. 13 Link 5...Line return device 6...Line under test 7...Test line 8 ...Automatic answering terminal 11 ... Test stand line 10 ... Test stand 91 ... Call processing control section

Claims (1)

[Claims] This is an intra-office loopback test method for a store-and-forward program-controlled electronic switching system using a common line signaling method, and includes a line loopback control means for loopback connecting a line under test to a test line within the local station system, and a line loopback control means for loopback connection of a line under test to a test line within the local station system. A common line signal return control means for controlling transmission and reception of common line signals between the line and the test line is provided, and the common line signal return control means controls the common line signal between the line under test and the test line. An intra-office loopback test method characterized by transmitting and receiving data within a store-and-forward program via a common channel signal link.