JPS6212253A - Telephone connection loop back test equipment - Google Patents

Abstract

PURPOSE:To simplify and standardize the test procedure of an exchange connection test by providing a test equipment between an outgoing trunk and an incoming trunk of an exchange to be tested and providing a memory storing a number conversion mode to the test equipment. CONSTITUTION:A loop back test equipment 8 mounted externally having a memory 9 storing the number conversion mode is connected between the outgoing trunk 5 and the incoming trunk 6. After a called party dial number stored in other exchange sent from the outgoing trunk 5 is received, the number is converted into a called party dial number according to the number mode set optionally to the memory 9 and sent to the incoming trunk 6 so as to be connected to the own exchange accommodated subscriber in the test device 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a telephone connection testing device for an exchange, and particularly to a return testing device suitable for testing a single exchange.

[Background of the invention]

When conducting a telephone connection test, conventionally, all connections of the incoming trunk of the exchange were verified, as described in "Construction and Maintenance of Electronic Exchanges" published by the Telecommunications Association, written by Morie-O and Mitsuo Arai, pages 115-126. an input trunk test device,
Tests are being conducted using outgoing trunk testing equipment to verify outgoing trunk reading. In this case, each of the incoming and outgoing trunks is tested individually, and there are disadvantages in that it requires manpower to handle the test equipment and requires skill to operate it.

Another method is to change the switch software and perform a return connection test. In this method, the incoming and outgoing trunks are directly connected, the dialed number of the called party sent from the outgoing trunk and accommodated in another exchange is taken into the tested exchange through the incoming trunk, and then sent to the tested exchange by the numeric receiver. A pseudo conversion is made by software to the dialed number of the accommodated called party, and a connection test is performed on the outgoing and incoming trunks at the same time. However, in this case, software changes are made to the switch being tested, so when a problem occurs, it is not clear whether the cause is in the switch or in the software that has been modified as a pseudo function. be.

[Purpose of the invention]

The object of the present invention is to provide a telephone connection return testing device that simultaneously verifies the connection function of outgoing trunks and incoming trunks for any switching equipment using simplified test procedures without making any changes to the main body of the switching equipment to be tested. Our goal is to provide the following.

[Summary of the invention]

In order to achieve the above object, the present invention connects an external return test device having a memory for storing number conversion formats between an outgoing trunk and an incoming trunk. After receiving the dialed number of the called party accommodated in the other exchange sent from the outgoing trunk, the number format is arbitrarily set in the memory so as to be connected to the subscriber accommodated in the own exchange within the return test equipment. The number is converted into the dialed number of the called party and sent to the incoming trunk.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Figure 1, 1 is the originating subscriber, 2 is the terminating subscriber, and 3
1 is a line link network, 4 is a trunk link network, 5 is an outgoing trunk, 6 is an incoming trunk, 7 is an exchange under test, 8 is an external return test device, 9 is a memory of the return test device 8, 10 is an external input terminal It shows.

With this configuration, when performing a connection test using outgoing trunk 5 and incoming trunk 6, for example, from Tokyo to Osaka 06-4
Consider the case of dialing 56-7890. In general, in exchanges that handle incoming calls, after the receiving number is determined in the preceding exchange, it is unnecessary to send up to several digits of the destination's area number and area code, so these unnecessary digits are deleted and sent. . Therefore, during initial setup, from external input terminal 1o,
The number of characters to be erased is set in the table on the memory 9 of the return test device 8, in this case, the first three digits 6-45 are erased.

During the connection test, the calling subscriber called 06-456-789.
When dialing 0, the dialed number is KP (the positive sign) from the outgoing trunk 5 through the line link network 3 and trunk link network 4 of the exchange under test 7.
+6-456-7890+ ST (transmission code). The sent signal is taken into the loopback test device 8, and the loopback test device executes the internal processing shown in FIG.

In other words, ■ Receive xp (circle sign), ■ Transmit ready signal for dialing digits reception, ■ Dial digits (6-456-789)
0) Reception, ■ sr (transmission code) reception, ■ Dial number conversion, that is, the table value in the memory 9 is read, and the received dial digits corresponding to the number of digits of the value are deleted from the beginning. In this example, 6-45 is deleted. ■ KP to entering trunk
(Central sign) Send, ■ S-78cpo o to the dial number
) transmission and (2) sr (transmission code) transmission.

The loopback test device 8 is configured with the above-mentioned software logic.

Therefore, a call that should be received by a subscriber of 06-456-7890 can be received by a subscriber accommodated in the same exchange as the calling subscriber by passing through the return test device 8, and the call is added to the exchange software as a pseudo function. In addition, connection tests between incoming trunks and outgoing trunks can be easily performed without making any changes.

〔Effect of the invention〕

According to the present invention, it is possible to simplify and stack up the test procedure of the exchange connection test, and also to change a part of the number reception function of the exchange software to make a pseudo connection between the incoming trunk and the outgoing trunk by software. Compared to testing methods, this method has the effect of eliminating human errors and increasing the reliability of the test.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a telephone connection return testing device according to an embodiment of the present invention, and FIG. 2 is a flowchart of processing procedures executed within the callback testing device. 1... Calling subscriber 2... Calling subscriber 3...
・Line link network 4... Trunk link network 5... Outgoing trunk 6... Incoming trunk 7...
・Exchange machine under test 8...Return test device 9...
Memo IJ 10...External input terminal'-1 (:

Claims (1)

[Claims] A test device is provided between the outgoing trunk and the incoming trunk of the exchange under test, and a means for importing into the test device the dialed number of the called party to be sent from the outgoing trunk to the incoming trunk of another exchange through a line, and means for converting the dialed number of the called party into a number format that can be connected to a subscriber and sending it to an incoming trunk of the exchange under test, and a memory for storing the number conversion format in the testing device. . A telephone connection return testing device, characterized in that the memory is provided with an external input terminal for setting the number conversion form.