JPH038146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a signal tone testing method, and more particularly to a signal tone testing method that simplifies the testing of digitally encoded audible signal tones used in digital electronic exchanges. .

(b) Technical background As the connection services provided by telephone exchanges become more diverse, the types of audible signal tones used for each connection service are also essential for switching connections such as dial tone, busy tone, ring tone, etc. The number of sounds has been increasing from 100% to 100% to 100%, to include service calling/recording sound, interruption sound, incoming call display sound, call time forecast sound, etc. In conventional analog type automatic switchboards, each of the audible tones used is supplied in analog form from a commonly provided tone generator. Therefore, in order to confirm the normality of each audible signal tone, connect a terminal that can listen to audible tones, such as a test receiver, to the output terminal of the signal tone generator and listen to each audible signal tone. It was possible.

(c) Prior Art and Problems FIG. 1 is a diagram showing an example of a digital electronic exchange to which the present invention is applied. In FIG. 1, the voice transmitted by a telephone 3 accommodated in a network 1 is converted into, for example, an 8-bit digital code by a line circuit 2, and a communication path established within the network 1 is transmitted by a connection control unit 4. transmitted through. Also, the various audible signal tones tn1 to tnm that the telephone 3 hears in various connection states are generated by the signal tone generator 7.
Similarly to voice, the signals are digitally encoded and supplied to predetermined terminals designated by addresses a1 to am of the network 1, respectively. Note that when the network 1 is made redundant by the 0 system and the 1 system, the signal tone generating device 7 is also provided in each network 1 of each system. Also, as the number of accommodated telephones increases, multiple networks 1 are installed,
Telephones 3 are housed in a distributed manner in each network 1. In such a case, a signal tone generator 7 is provided for each network 1, and each Audible signal tones tn1 to tnm are supplied. The audible signal tones tn1 to tn1 supplied from the signal tone generator 7
When checking the normality of TNM, use the signal tone generator 7.
Even if a terminal such as a test handset is connected to the output terminal of the
It is impossible to listen to TNM. As a countermeasure against this, an audible signal tone to be tested from the telephone 3
Although it is considered to realize a connection process that allows listening to tn1 to tnm, it would take a lot of time to appropriately realize various connection states. Even in such a case, the audible signal tones tn1 to tnm from the signal tone generator 7 provided in the network 1, which is the standby system, of the 0 and 1 systems cannot be heard, so the signals on the standby side cannot be heard. When testing the sound generator 7, it is necessary to switch the corresponding network 1 to the active system. Furthermore, multiple networks 1
When installing a network, it is necessary to implement the various connection processes described above from the telephones 3 accommodated in each network 1.

As is clear from the above explanation, in the conventional signal tone test method, it is necessary to realize various connection states from the telephone 3 accommodated in each network 1, and to confirm the normality of the audible signal tones tn1 to tnm. The drawback was that the test consumed a lot of time.

(d) Purpose of the Invention The purpose of the present invention is to eliminate the shortcomings of the conventional signal tone testing methods as described above, and to minimize the number of man-hours required to conduct verification tests for all audible signal tones used in digital electronic exchanges. There is a particular thing.

(e) Structure of the Invention In a digital exchange equipped with a plurality of signal tone generators for inputting digitally encoded audible signal tones to predetermined terminals of a network, By connecting a terminal that outputs an audible sound to a line circuit that converts a digitally encoded audible signal sound into an analog signal, and arbitrarily specifying the predetermined terminal to which the audible signal sound is input, the specified predetermined Means for connecting a terminal and an accommodation terminal of the line circuit on a network is provided in the connection control section of the digital exchange, and the signal tone generating device outputs the specified audible signal tone by listening to the specified audible signal tone from the terminal. This is achieved by a signal tone testing method characterized by testing the normality of an audible signal tone.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a signal tone test method according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures. Also, in Figure 2,
Only one set of networks 1 is shown. Second
In the figure, a speaker 8 is connected to a line circuit 2 housed in a predetermined terminal (address at) of a network 1 as a terminal capable of listening to an audible signal tone. The connection control section 4 is also provided with a signal tone test mechanism 20. Further, digitally encoded audible signal tones tn1 to tnm are input from the signal tone generator 7 to predetermined terminals (addresses a1 to am) of the network 1. The audible signal tones tn1 to tnm are inputted to the communication path memory 9 via the multiplex circuit 10, and are output from the counting circuit 12 via the selection circuit 13.
Written to addresses a1 to am. When performing a test to confirm the normality of the audible signal tone tni (i indicates any one from 1 to m), the tester must check the connection control unit 4.
An address ai specifying a terminal for inputting the audible signal tone tni to be tested is input to the signal tone testing mechanism 20 from the maintenance console 21 attached to the . The signal tone test mechanism 20 identifies whether the received address ai is related to the signal tone generator 7 corresponding to the active network 1, and determines that it corresponds to the backup network 1. In this case, after switching the network 1 from the backup system to the active system, the address ai is transferred to the data register 1 provided in the signal reception distribution circuit 15 in the network 1.
A control memory designation code that designates the control memory 14 in the network 1 stored in the network 8 and stored in advance.
cm, and line circuit 2 connected to speaker 8
After storing the address at specifying the address at in the memory register 16 and address register 17 in the signal reception distribution circuit 15, respectively, the signal reception distribution circuit 1
The start signal st is set in the command register 19 in 5. The signal reception distribution circuit 15 sends the address at of the control memory 14 designated by the control memory designation code cm,
Write address ai. As a result, the address ai is read from the address at of the control memory 14 in the time domain corresponding to the line circuit 2 to which the speaker 8 is connected, and is inputted to the communication path memory 9 as a read address via the selection circuit 13. Therefore, the audible signal tone written in the address ai of the communication path memory 9
tni is read out and output to the line circuit 2 via the separation circuit 11. The line circuit 2 converts the received digitally encoded audible signal tone tni into analog form and inputs it to the speaker 8. As a result, the tester hears the audible signal sound output from speaker 8.
You can listen to tni.

As is clear from the above description, according to this embodiment, the tester inputs the address ai of the audible signal tone tni to be tested from the maintenance console 21 to the signal tone test mechanism 20 in the connection control unit 4. As a result, the signal can be immediately heard from the speaker 8, and the normality of the audible signal tone tni can be easily confirmed.

It should be noted that FIG. 2 is only one embodiment of the present invention, and for example, an audible signal sound connected to the line circuit 2.
The terminal capable of listening to tn1 to tnm is not limited to the speaker 8, and many other modifications may be considered, such as a test handset, but the effects of the present invention do not change in any case. Furthermore, the signal tone test mechanism 20 is not limited to being provided within the connection control section 4; for example, in a digital electronic exchange having a plurality of networks 1, it may be provided within the commonly provided management control section 5 to control the The control memory designation code cm is specified in the connection control unit 4 through the bus 6.
By transmitting the addresses at and ai and the activation signal st, the audible signal tones tn1 to tn1 to be supplied by the signal tone generator 7 corresponding to any network 1 are transmitted.
It will be possible to test the normality of TNM. Further, the configuration of the digital electronic exchange to which the present invention is applied is not limited to that shown in the drawings, and many other modifications may be considered; however, the effects of the present invention remain the same in any case.

(g) Effects of the Invention As described above, according to the present invention, in the digital electronic exchange, the normality of the audible signal tone supplied by the signal tone generator can be heard with a simple operation, and the normality can be quickly confirmed. You can.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a digital electronic exchange to which the present invention is applied, and FIG. 2 is a diagram showing a signal tone testing method according to an embodiment of the present invention. In the figure, 1 is a network, 2 is a line circuit, 3 is a telephone, 4 is a connection control unit, 5 is a management control unit, 6 is a control bus, 7 is a signal tone generator, 8 is a speaker, and 9 is a communication path memory. , 10 is a multiplex circuit, 1
1 is a separation circuit, 12 is a counting circuit, 13 is a selection circuit, 14 is a control memory, 15 is a signal reception distribution circuit, 16 is a memory register, 17 is an address register, 18 is a data register, 19 is a command register, and 20 is a signal Sound test mechanism, 21 is a maintenance console, a1 to am, ai and at are addresses, cm is a control memory designation code, st is a start signal, tn1 to
tnm and tni refer to audible signal tones.

Claims (1)

[Claims] 1. In a digital exchange equipped with a plurality of signal tone generators that input digitally encoded audible signal tones to predetermined terminals of a network, the digitally encoded audible signals are received in predetermined terminals of the network. By connecting a terminal that outputs an audible sound to a line circuit that converts an audible signal sound into an analog signal, and arbitrarily specifying the predetermined terminal into which the audible signal sound is input, the specified predetermined terminal and the line circuit are connected. A connection control unit of the digital exchange is provided with a means for connecting the designated audible signal tone to the accommodation terminal of the terminal on the network, and the audible signal tone outputted by the signal tone generating device is A signal tone test method characterized by performing a normality test.