JP2564955B2 - Subscriber line test method - Google Patents

Description

The present invention relates to a subscriber line test system, and in particular, it is connected to an exchange such as a general subscriber telephone network through a plurality of subscriber lines assigned representative numbers. The present invention relates to a subscriber line test system in which a base station has a function of testing a subscriber line.

[Conventional technology]

Conventionally, a base station connected to an exchange such as a general subscriber telephone network via a plurality of subscriber lines to which a representative number has been assigned is tested by a plurality of subscribers in order to test the subscriber line and detect an abnormality. One of the lines was selected, a test call of the representative number of the own station was made to the exchange, and an incoming call from the exchange to the base station was confirmed through another subscriber line.

[Problems 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 representative number of the base station via the subscriber line. In this case, an incoming call from the exchange is an incoming call for the test. Not only can it not be distinguished whether it is a call or an incoming call for a general call, but also the subscriber line to which the test call is coming in cannot be specified. Therefore, there is a drawback in that a complicated function for identifying the incoming call of the test call is required.

An object of the present invention is to provide a subscriber line test system capable of performing a test on a plurality of subscriber lines assigned with representative numbers, excluding the conventional drawbacks.

[Means for solving the problem]

The subscriber line test method of the present invention is a subscriber line test method in which a plurality of subscriber lines, each of which is provided with a representative number and is connected between a base station and an exchange, are tested by the base station. At least one subscriber line provided with an individual subscriber number is provided between the exchange and the base station, and the base station selects one of the plurality of subscriber lines provided with the representative number to select the exchange. Via a means for sending out a test signal when a telephone line is connected to the subscriber line to which the individual subscriber number is given, and the subscriber line to which the individual subscriber number is given to And means for receiving the test signal and identifying an abnormality when a call line is connected in response to an incoming call from the exchange and responding.

〔Example〕

 The present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a subscriber line test system of the present invention. In the figure, a base station 1 is an exchange such as a general subscriber telephone network via a plurality of subscriber lines 101 to 10n to which one representative number is assigned and a subscriber line 201 to which an individual subscriber number is assigned. It is connected to 2. The subscriber line interface circuits 11 to 1n provided in the base station 1 are connected to the subscriber lines 101 to 10n, respectively, and input / output call connection information such as incoming / outgoing calls and ending calls. The test subscriber line interface circuit 20 is connected to the subscriber line 201 to which an individual subscriber number is assigned, and has a function of detecting an abnormality in the subscriber line.
The call path switch 30 is a subscriber line interface circuit 11-
It receives n signals from 1n, switches these signals to m (m ≦ n) speech channels according to the control signal from the main control unit 40, and outputs them. Radio interface circuit 61-6m
Is connected to a wireless transceiver 50 and inputs / outputs call connection information and the like with a slave station via the antenna 3 and the wireless transceiver 50.

Next, the operation will be described. Now assume that subscriber line 101 is 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. When the test subscriber line interface circuit 20 detects an incoming call from the exchange through the subscriber line 201 to which an individual subscriber number is assigned, the test subscriber line interface circuit 20 notifies the main control unit 40 of the incoming call. When receiving the notification of the incoming call, the main control unit 40 instructs the test subscriber line interface circuit 20 to respond to the incoming call (off-hook in the telephone) to connect the communication path. When the subscriber lines 101 and 201 are connected, the main control unit 40 instructs the subscriber line interface circuit 11 to send a test signal. The test signal may be a dial signal, for example. The subscriber line interface circuit 11 sends a test signal in response to the instruction. The test subscriber line interface circuit 20 detects this test signal, reports the result to the main control unit 40, and the main control unit 40 displays the abnormal state of the subscriber line.

Similarly, for the subscriber lines 102 to 10n, it is possible to arbitrarily select a subscriber line and perform a test to detect an abnormality of the subscriber line.

〔The invention's effect〕

As described above, according to the subscriber line test method of the present invention, a subscriber line to which an individual subscriber number is assigned is provided and a test call is made from the base station, so that the called subscriber of the test call There is an effect that the line can be specified and the subscriber line can be easily tested.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a subscriber line test system of the present invention. 1 ... Base station, 2 ... Switch, 3 ... Antenna, 11-1n
...... Subscriber line interface circuit, 20 …… Test subscriber line interface circuit, 30 …… Call path switch, 40 ……
Main control unit, 50 ... Radio transceiver, 61-6m ... Radio interface circuit, 101-10n ... Subscriber line with representative number, 201 ... Subscriber with individual subscriber number Line, 301 …… Data bus.

Claims (1)

(57) [Claims] 1. A subscriber line test system for testing a plurality of subscriber lines, each of which is provided with a representative number and connected between a base station and an exchange, at the base station, and between the base station and the exchange. Is provided with at least one subscriber line to which an individual subscriber number is assigned, and the base station selects one of the plurality of subscriber lines to which the representative number is assigned and selects the individual subscriber line for the exchange. A means for sending a test signal when a telephone line is connected to a subscriber line to which a subscriber number is given and a call from the exchange is sent through the subscriber line to which the individual subscriber number is given. A subscriber line test system, comprising means for receiving the test signal and identifying an abnormality when a call line is connected in response to a call.