JPH03280649A - Monitor system for isdn primary group subscriber line - Google Patents

Abstract

PURPOSE:To output a signal selected on an ISDN primary group subscriber line, to monitor the output and to attain efficient monitor by allowing a primary group subscriber signal selection controller to control a primary subscriber signal selector when a selection command is implemented. CONSTITUTION:When a maintenance personnel operates a maintenance terminal equipment 10 to enter a line number of a monitored primary group subscriber line, the designated line number information is sent to a primary group subscrib er signal selection controller 11. The primary group subscriber signal selection controller 11 sends a control signal to select a primary group subscriber signal on a designated monitor primary group subscriber line to a primary group subscriber signal selection device 9. As a result, the primary group subscriber signal selection device 9 receiving the control signal from the primary group subscriber signal selection controller 11 selects the primary group subscriber signal designated from plural primary group subscriber signals and outputs the signal to a monitor 12. Thus, the reconnection between interface circuits 2,2' and the monitor 12 is not required in the case of monitoring.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a maintenance and testing method for a digital exchange accommodating I5DN primary group subscriber lines, and in particular to a method for selecting signals on ISDN primary group subscriber lines. This invention relates to a method for monitoring ISDN primary group subscriber lines.

[Prior Art] Conventionally, when monitoring signals on ISDN primary group subscriber lines housed in a digital exchange, an interface circuit with a monitor device is arranged for each subscriber line, and the monitor device is connected to this arranged subscriber line. The signals on each subscriber line are input and monitored through an interface circuit.

[Problems to be Solved by the Invention] Conventionally, when monitoring signals on I5DN primary group subscriber lines, an interface circuit is provided for each subscriber line. In addition to increasing costs, when monitoring signals on a desired subscriber line, it is necessary to manually connect the corresponding interface circuit and the monitor device.
The problem was that it was inefficient.

[Means for Solving the Problems] In order to solve these problems, I5D according to the present invention
The monitoring method for N primary group subscriber lines is to monitor one I from among the signals on multiple ISDN primary group subscriber lines accommodated in an exchange.
A primary group subscriber signal selection device that selects an SDN primary group subscriber signal, a maintenance terminal that instructs selection of an ISDN primary group subscriber signal, and a primary group subscriber signal selection device that selects an ISDN primary group subscriber signal based on an instruction signal input from the maintenance terminal. A primary group subscriber signal selection control device that controls the selection device to select an ISDN primary group subscriber signal, and a monitor device that monitors the primary group subscriber signal selected by the primary group subscriber signal selection device. It is something.

[When an instruction to select a signal on the ISDN primary group subscriber line is issued from the operation maintenance terminal, the primary group subscriber signal selection control device controls the primary group subscriber signal selection device to select the signal on the ISDN primary group subscriber line. Output the selected signal.

[Example] Next, the present invention will be explained with reference to the drawings.

The figure is a configuration diagram of a system to which the ISDN primary group subscriber line monitoring method according to the present invention is applied.

In the figure, the I5DN-secondary subscriber line 1.1' is connected to the primary group subscriber line interface circuit 2.2'. The signal from the ISDN primary group subscriber line 1.1' is transmitted to the primary group subscriber line interface circuit 2, 2.
It is terminated by the primary group subscriber line transmission circuit 3, 3° within ', and electrical level conversion is performed. The primary group subscriber signals a, a' (23B+D) which have undergone electrical level conversion by the primary group subscriber line transmission circuit 3.3° are further converted into 23B channel signals by the multiplexing/demultiplexing circuits 4 and 4'. ,
b' and D channel signals c and c'.

Then, this separated 23B channel signal S, b'
is sent to the switch device 6.

On the other hand, the separated D channel signals c and c are sent to the D channel interface circuit 5°5°,
Here, layer 2 processing is performed. The D channel termination wave W7 is connected to the D channel interface circuit 5,5°.
and layer 2 in these times I@5.5'
The D channel signal on which the above processing has been performed is input and layer 3 processing is performed, and call control information resulting from this processing is sent to the call processing control bag w8 to execute call processing.

The multiplexing/demultiplexing circuit 4.4' also receives the 23B channel signals S, b' from the switch device 6 and the D channel signal c from the D channel interface circuit 5,5°.
c' is input and multiplexed, and primary group subscriber signals a and a' are generated and sent to the primary group subscriber line transmission circuit 3.
3'' to the primary group subscriber line 1.1'.

The primary group subscriber signal selection device 9 also includes a plurality of primary group subscriber line transmission circuits 3, 3' and a plurality of multiplexing/demultiplexing circuits 4.
, 4°, and a plurality of primary group subscriber line transmission circuits 3.
The primary group subscriber signals a, a' outputted from the multiplexing/demultiplexing circuits 4, 4' are inputted thereto.

Then, when the maintenance person operates the maintenance terminal 10 and inputs the line number of the next group subscriber line to be monitored, this designated line number information is sent to the primary group subscriber signal selection control device tll. The primary group subscriber signal selection control device W11 sends a control signal to the primary group subscriber signal selection device 9 to select the primary group subscriber signal on the specified monitored next group subscriber line. . As a result, the primary group subscriber signal selection device 9, which has received the control signal from the primary group subscriber signal selection control device 11, selects the specified primary group subscriber signal from among the plurality of primary group subscriber signals. and outputs it to the monitor device W12.

As explained above, in the ISDN primary subscriber line monitoring method of the present invention, when a maintenance person operates the maintenance terminal 10 to select and monitor a signal on the ISDN primary subscriber line, the The selection instruction signal is sent to the primary group subscriber signal selection control device 11, and as a result, the primary group subscriber signal selection device 10 connected to the primary group subscriber signal selection control device 11 selects the desired ISDN primary group subscriber signal. Since it is possible to select and monitor, there is no need to provide an interface circuit for each subscriber line, and therefore there is no need to change the connection between the interface circuit and the monitor device when monitoring.

[Effects of the Invention] As explained above, the I5DN primary group subscriber line monitoring method according to the present invention, when an instruction to select a signal on the ISDN primary group subscriber line is given from the maintenance terminal, the primary group subscriber signal The selection control device controls the primary group subscriber signal selection device to output and monitor the selected signal on the I5DN primary group subscriber line, so there is no need to provide an interface circuit for each subscriber line. Furthermore, since there is no need to change the connection between the interface circuit and the monitor device when monitoring signals on a desired subscriber line, there is an effect that monitoring can be performed efficiently and economically.

[Brief explanation of the drawing]

The figure is a configuration diagram of a system to which the ISDN primary group subscriber line monitoring method according to the present invention is applied. 1.1゛...ISDN primary group subscriber line, 2.2'
...Primary group subscriber line interface circuit, 3.
3'...Primary group subscriber line transmission circuit, 4,4' ・
...multiplexing/separating circuit, 5,5...D channel interface circuit, 6...switch device, 7.
...D channel termination device, 8...Call processing IIJ
control device, 9...primary group subscriber signal selection device, 10.
. . . Maintenance terminal, 11 . . . Primary group subscriber signal selection control device, 12 . . . - Monitor device, a. a'...-primary group subscriber signal, b, b'...
・23B channel signal, c, c"...D channel signal.

Claims (1)

[Scope of Claims] In an ISDN primary group subscriber line monitoring system that monitors signals on ISDN primary group subscriber lines accommodated in an exchange, from among signals on a plurality of ISDN primary group subscriber lines accommodated in the exchange, a primary group subscriber signal selection device for selecting one ISDN primary group subscriber signal; a maintenance terminal for instructing selection of the ISDN primary group subscriber signal; a primary group subscriber signal selection control device that controls a group subscriber signal selection device to select the ISDN primary group subscriber signal; and monitors the primary group subscriber signal selected by the primary group subscriber signal selection device. A monitoring system for an ISDN primary group subscriber line, characterized in that the signal on the ISDN primary group subscriber line selected by the maintenance terminal can be outputted from the primary group subscriber signal selection device. .