JPH04316259A - Isdn line trunk test system - Google Patents

Abstract

PURPOSE:To easily test an ISDN line trunk device without moving a test equipment neither switching the line connection by providing the ISDN line trunk device with a line switching means and operating this means by the indication from the central processing controller of a digital exchange. CONSTITUTION:Lines from an ISDN network 6 are stored in ISDN line trunk devices 3. Each device 3 has an output terminal for connection to the test equipment independently of connection to the ISDN network 6, and plural ISDN line trunk devices 3 are connected to the test equipment 4 by multiconnection. At the time of testing one trunk device 3, the trunk device number is inputted from a maintenance console 5. A central processing controller 1 indicates line switching to the pertinent trunk device 3 when receiving this trunk device number, and the indicated trunk device 3 switches the line connected to the side of the network 6 to connect it to the test equipment. Thus, the desired trunk device is tested by the test equipment 4.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to digital electronic switching systems, and more particularly to the testing of ISDN line trunk equipment.

0002

2. Description of the Related Art Conventionally, when testing an ISDN line trunk device, the trunk device was tested by directly disconnecting the network side line, and then reconnecting the removed network side line to a test device.

0003

[Problems to be Solved by the Invention] This conventional ISDN line trunk testing method has the inconvenience of having to change the connection of the ISDN line between the network and the test equipment every time a test is performed. The disadvantage is that it is not convenient for maintenance and operation, as it involves the movement of equipment.

[0004] An object of the present invention is to provide an ISDN line trunk test method that allows connection of an ISDN line to a test device by remote control during testing.

[0005]

[Means for Solving the Problems] The ISDN line trunk test method of the present invention provides a primary speed interface or a
A trunk device that connects the ISDN line of the basic speed interface has means for switching the physical interface part of the ISDN line to the network side or the test equipment side according to instructions from the central processing control unit of the digital exchange, and The connection between the ISDN line trunk device and the test is divided into a primary rate interface and a basic rate interface, each of which is multi-connected and connected to the test equipment.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a relay system diagram showing an embodiment of the present invention. The line from the ISDN network 6 is accommodated in the ISDN line trunk device 3. The ISDN line trunk device 3 has an output terminal for connecting to the test equipment in addition to the connection to the ISDN network 6, and this output terminal is multi-connected to a plurality of ISDN line trunk devices 3 and is connected to the test equipment 4. connected to.

When testing the ISDN line trunk device 3, the trunk device number is input from the maintenance console 5. The central processing control unit 1 that received this trunk device number gives an instruction to the corresponding ISDN line trunk device 3 to switch the line, and the ISDN line trunk device 3 that received the instruction switches the line connected to the network side to the test device. Switch to connect to. This allows the testing device 4 to test a desired trunk device.

FIG. 2 is a functional block diagram of the ISDN line trunk device 3 of the embodiment. The B channel from the time division switch interface circuit 33 and the D channel from the central processing controller interface circuit 32 are multiplexed by the physical interface circuit 34 and connected to the ISDN network or test equipment via the switching circuit 31. . This switching circuit 31 operates under control from a central processing controller interface circuit 32 that receives instructions from the central processing controller.

0010

[Effects of the Invention] As explained above, the present invention provides an ISDN
By providing line switching means in the line trunk equipment and operating it under instructions from the central processing control unit of the digital exchange, it is easy to test the desired ISDN line trunk equipment without moving the test equipment or changing line connections. This has the effect of increasing efficiency in maintenance and operation.

[Brief explanation of drawings]

FIG. 1 is a relay system diagram showing an embodiment of the present invention.

FIG. 2 is a functional block diagram of the ISDN line trunk device of this embodiment.

[Explanation of symbols]

1 Central processing control unit 2 Time division switch 3 ISDN line trunk equipment 4 Test equipment 5 Maintenance console 6 ISDN network 31 Switching circuit

Claims (1)

[Claims] 1. In a digital electronic exchange that accommodates an ISDN line, a trunk device that connects an ISDN line of a primary rate interface or a basic rate interface connects the ISDN line according to an instruction from a central processing control unit of the digital exchange. has a means for switching the physical interface part of the ISDN line to the network side or the test equipment side, and divides the connection between the plurality of ISDN line trunk devices and the test equipment into a primary rate interface and a basic rate interface, and performs multi-connection for each. An ISDN line trunk test method characterized by connecting to test equipment.