JPH03242071A - Subscriber line test system - Google Patents

Abstract

PURPOSE:To specify the terminating subscriber line of a test call to easily test the subscriber line by providing subscriber lines to which individual subscriber numbers are given and originating the test call from a base station. CONSTITUTION:A base station 1 is connected to an exchange 2 like a general subscriber telephone network through plural subscriber lines 10l to 10n to which one representative number is given and a subscriber line 201 to which an individual subscriber number is given. The base station 1 selects one of plural subscriber lines 101 to 10n, to which the representative number is given, to originate a call for the subscriber line 201, to which the individual subscriber number is given, to the exchange 2 and sends a test signal at the time of connection of a line of contact and detects the call from the exchange 2 through the subscriber line 201, to which the individual subscriber number is given, and responds and receives the test signal at the time of connection of the line of contact, thereby discriminating abnormality. Thus, the terminating subscriber line of the test call is specified to easily test the subscriber line.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a subscriber line testing system, and particularly to a subscriber line testing system that is connected to an exchange of a general subscriber telephone network or the like via a plurality of subscriber lines assigned representative numbers. The present invention relates to a subscriber line testing method in which a base station has the function of testing subscriber lines.

[Conventional technology]

Conventionally, a base station connected to an exchange in a general subscriber telephone network via multiple subscriber lines assigned representative numbers has been used to connect multiple subscriber lines in order to test subscriber lines and detect abnormalities. This was done by selecting one of the subscriber lines, making a test call to the exchange using its own representative number, and confirming the incoming call from the exchange to the base station via other subscriber lines.

[Problem to be solved by the invention]

In the conventional subscriber line test method described above, a test call is made from the base station to the base station's representative number via the subscriber line, but in this case, the incoming call from the exchange is the incoming call for the test. Not only is it not possible to identify whether the test call is an incoming call or a general call, but it is also not possible to identify the subscriber line to which the test call is received. Therefore, there is a drawback that a complicated function is required to identify the incoming test call.

SUMMARY OF THE INVENTION An object of the present invention is to provide a subscriber line testing system that eliminates the above-mentioned drawbacks of the conventional method and can test a plurality of subscriber lines assigned representative numbers.

[Means to solve the problem]

The subscriber line test method of the present invention is a subscriber line test method in which a plurality of subscriber lines connected between a base station and an exchange and assigned a representative number are tested at the base station. At least one subscriber line assigned an individual subscriber number is provided between the base station and the exchange, and the base station selects one of the plurality of subscriber lines assigned the representative number and connects it to the exchange. means for calling a subscriber line to which the individual subscriber number has been assigned and transmitting a test signal when the telephone line is connected; The apparatus further comprises means for detecting an incoming call from the exchange, and receiving the test signal when a call line is connected in response to the call, thereby identifying an abnormality.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of the subscriber line testing method of the present invention. In the figure, a base station 1 connects a switchboard of a general subscriber telephone network or the like via a plurality of subscriber lines 101 to 10n assigned with one representative number and a subscriber line 201 assigned with individual subscriber numbers. 2 is connected. Subscriber line interface circuits 11 to 1 provided in base station 1
n is connected to subscriber lines 101 to Ion, respectively, and inputs and outputs call connection information such as outgoing/incoming calls and call termination. The test subscriber line interface circuit 20 is connected to a subscriber line 201 assigned an individual subscriber number, and has a function of detecting abnormalities in the subscriber line. The communication path switch 30 receives n signals from the subscriber line interface circuits 11 to 1n,
These signals are switched to m (m≦n>) communication channels and output according to a control signal from the main control unit 40.The radio interface circuits 61 to 6m are connected to the radio transceiver 50, and are connected to the antenna 3 and the radio Call connection information and the like with slave stations are input/output via the transceiver 50.

Next, the operation will be explained. Now assume that subscriber line 101 is to be tested. The main control unit 40 of the base station 1 instructs the subscriber line interface circuit 11 to make a call to the test subscriber line interface circuit 20 via the data bus 301. The subscriber line interface circuit 11 calls the test subscriber line interface circuit 20 via the subscriber line 101 in response to a call request.The test subscriber line interface circuit 20 is assigned an individual subscriber number. When an incoming call from the exchange is detected via the subscriber line 201, the main control unit 40 is notified of the incoming call. When the main control unit 40 receives the notification of an incoming call, the main control unit 40 controls the test subscriber line interface circuit 20.
The subscriber lines 101 and 2 are instructed to respond to an incoming call (off-hook on the telephone) and connect the communication path.
01, the main control section 40 instructs the subscriber line interface circuit 11 to send out a test signal. The test signal may be, for example, a dial signal. The subscriber line interface circuit 11 sends out test signals in response to instructions.

The test subscriber line interface circuit 20 detects this test signal, reports the result to the main control section 40, and the main control section 40 displays the abnormal condition of the subscriber line.

Similarly, the subscriber lines 102 to Ion can be arbitrarily selected and tested to detect abnormalities in the subscriber lines.

〔Effect of the invention〕

As explained above, according to the subscriber line test method of the present invention, by providing a subscriber line assigned an individual subscriber number and making a test call from a base station, the subscriber line receiving the test call can This has the advantage that the subscriber line can be easily tested by identifying the line.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the subscriber line testing method of the present invention. 1... Base station, 2... Exchange, 3... Antenna,
11~in...Subscriber line interface circuit, 20.
...Test subscriber line interface circuit, 30... Call path switch, 40... Main control unit, 50... Radio transmitter/receiver, 61-6m... Radio device interface circuit,
101 to 10n: subscriber line assigned a representative number, 201: subscriber line assigned an individual subscriber number, 301: data bus.

Claims (1)

[Claims] In a subscriber line test method in which a plurality of subscriber lines connected between a base station and an exchange and assigned representative numbers are tested at the base station, individual subscriber lines between the base station and the exchange are tested. At least one numbered subscriber line is provided, and the base station selects one of the plurality of subscriber lines assigned the representative number and assigns the individual subscriber number to the exchange. means for calling the subscriber line assigned to the subscriber line and transmitting a test signal when the call line is connected; and means for detecting and responding to an incoming call from the exchange via the subscriber line assigned the individual subscriber number. and means for receiving the test signal and identifying an abnormality when the telephone line is connected.