JPH01318448A - Trunk test system - Google Patents

Abstract

PURPOSE:To realize a trunk test system with no deterioration of the economical properties by providing a subscriber line signal device to send the desired signal tones back to various terminal equipments stored in an automatic switchboard. CONSTITUTION:The subscriber line signal devices LSE18 and 28 contained in the automatic switchboards 1 and 2 are used for the test of the outgoing trunks 12, 14, 22 and 24 as well as the incoming trunks 13, 15, 23 and 25 respectively. Thus a single type of LSE18 or 28 is used even for the test of the outgoing trunks 12 and 22 and the incoming trunks 13 and 23 for telephone connection and the test of the outgoing trunks 14 and 24 and the incoming trunks 15 and 25 for facsimile connection respectively. As a result, it is not required to prepare the automatic answer trunks for each connection type.

Description

[Detailed Description of the Invention] [Summary] Regarding the improvement of a trunk testing method for testing trunks in which trunk lines are housed in automatic switching equipment, the present invention aims to realize a trunk testing method that does not impair the economic efficiency of automatic switching equipment. A subscription that sends a signal from various terminal devices housed in one automatic exchange and sends the required signal tones back to various terminal devices housed in the other automatic exchange via trunk lines corresponding to the various terminal devices. Each trunk line is accommodated in one automatic exchange by making incoming connections to subscriber line signaling devices and sending back predetermined signal tones corresponding to various terminal devices from the connected subscriber line signaling devices. Each trunk and each trunk accommodating each trunk to the other automatic switch are configured to be tested.

[Industrial application field]

The present invention relates to improvements in trunk testing methods for testing trunks that accommodate trunk lines in automatic switching equipment.

In a switching network in which a plurality of automatic exchanges are interconnected by trunk lines, trunks are provided in each automatic exchange to accommodate the trunk lines.

As the types of terminal equipment accommodated in each automatic exchange have diversified from telephones to facsimile terminals, etc., different trunk lines are used corresponding to the type of terminal equipment, resulting in trunk There is also a trend toward diversification of types.

[Conventional technology]

FIG. 3 is a diagram showing an example of a conventional trunk test method.

In FIG. 3, automatic exchanges 1 and 2 are interconnected by trunk lines 3-1 and 3-2 for telephone connection and trunk lines 3-3 and 3-4 for facsimile connection.

In the automatic exchange 1, trunk lines 3-1 and 3-3 are accommodated in the network (NW) 11 via outgoing trunks (OGT) 12 and 14, and trunk lines 3-2 and 3-4 are accommodated in the network (NW) 11 via outgoing trunks (OGT) 12 and 14. In the automatic exchange 2, trunk lines 3-2 and 3-4 are connected to the network (NW) 11 via outgoing trunks (OCT) 22 and 24. ) 21, and trunk lines 3-1 and 3
-3 is accommodated in Neso I work (NW) 21 via incoming trunks (ICT) 23 and 25, and trunk line 3
-1 is used for telephone connection from automatic exchange 1 to automatic exchange 2, and trunk line 3-2 is used from automatic exchange 2 to automatic exchange 1.
trunk line 3-3 is used for telephone connection to automatic switchboard 1.
The trunk line 3-4 is used for a facsimile connection from the automatic exchange m2 to the automatic exchange 1.

Such outgoing trunk (OGT) 12 and incoming trunk (
When testing the ICT) 23, make a call from the telephone 4 housed in the automatic exchange 1 and dial the special number specified for testing the telephone connection trunk. Call route pl□
to the outgoing trunk (OCT) 12 via the trunk line 3.
-1, the outgoing trunk (OCT) 12 is set to the outgoing connection state, and the large trunk (ICT) 23 is set to the incoming connection state, and automatically communicated via the communication path 1) 21 set within the network (NW) 21. The incoming call is connected to an automatic answering trunk (AAT) 26 provided in the exchange 2.

The automatic answering trunk (AAT>26) that is connected to an incoming call returns a ring tone for a predetermined period of time, and then changes the call status to at (hereinafter, returns a dial tone) in the same way as when an incoming call is connected to a telephone.

The returned ringtone and dial tone are sent back to the network (NW).
) 21 is transmitted to the telephone 4 via the incoming trunk (CT) 23, the trunk line 3-1, the outgoing trunk (OCT) 12, and the network (NW>11). .

Callers from phone 4 are placed on an automatic answering trunk (AAT).
By listening to the ring tone and dial tone returned from the outgoing trunk (OCT) 12 and the incoming trunk (
Confirm that ICT) 23 is operating normally.

Next, the outgoing trunk (OCT) 22 and incoming trunk (IC)
T) 13, by making a call from the telephone a5 housed in the automatic exchange 2 and dialing a special number determined for testing the telephone connection trunk, the network (NW) 21rI! Connect to the outgoing trunk (OCT) 22 via the communication path pzz set to J, and connect to the middle m4%3
-2, the outgoing trunk (OCT) 22 is set to the outgoing connection state and the large trunk (ICT) 13 is set to the incoming connection state, and the automatic switch The incoming call is connected to an automatic answering trunk (AAT) 16 provided at 1.

The automatic answering trunk (AAT) 16 connected to the incoming call returns a dial tone after returning a ring tone for a predetermined period of time, similar to the automatic answering trunk (AAT) 26.

The returned ringtone and dial tone are sent back to the network (NW).
) 11, communication path p1□, incoming trunk (ICT) 13,
Telephone a via trunk line 3-2, outgoing trunk (oGT) 22, and communication path pz2 within network (NW) 21
5.

The caller from phone 5 is placed on an automatic answering trunk (AAT).
16, the outgoing trunk (OCT) 22 and the incoming trunk (
Confirm that ICT) 13 is operating normally.

Next, the outgoing trunk (OGT) 14 and incoming trunk (IC
T) 25, the network (NW )11 through the communication path p++ set in the outgoing trunk (OCT
) 14 and an outgoing trunk (O
CT) 14 is in outgoing connection state, incoming trunk (ICT) 25
are set to the incoming connection state, and the network (NW
) 21 to an automatic answering trunk (AAT) 27 provided in the automatic exchange 2.

The automatic answering trunk (AAT) 27 connected to the incoming call returns a predetermined signal tone in the same way as when connected to the facsimile terminal.

The returned signal tone is transmitted through the communication path 1) 23 within the network (NW) 21, the incoming trunk (ICT) 25, and the trunk line 3-
3. Outgoing trunk (OCT) 14 and network (N
It is transmitted to the facsimile terminal device (FAX) 6 via the communication path p+3 in which W>11.

The caller from the facsimile terminal (FAX) 6 can identify the signal tone returned from the automatic answering trunk (AAT) 27 to determine that the outgoing trunk (OCT) 14 and incoming trunk (ICT) 25 are operating normally. Make sure that.

Next, the outgoing trunk (OCT) 24 and incoming trunk (IC)
T) 15, the network (NW ) 21 through the communication path pi4 set in the outgoing trunk (OCT)
) 24 and an outgoing trunk (O
CT) 24 is in outgoing connection state, incoming trunk (ICT) 15
are set to the incoming connection state, and the network (NW
) 11, the incoming call is connected to an automatic answering trunk (AAT) 17 provided in an automatic switching system.

The automatic answering trunk (AAT) 17 connected to the incoming call returns a signal tone, similar to the automatic answering trunk (AAT) 27.

The returned signal tone is transmitted through the communication path p14 within the network (NW) 11, the incoming trunk (ICT) 15, and the trunk line 3-4.
, outgoing trunk (OGT) 24 and network (NW
) 21 via the communication path pza to the facsimile terminal (FAX) 7.

A caller from a facsimile terminal (FAX) 7 identifies an outgoing trunk (OCT) 24 and an incoming trunk (ICT) 15 by identifying the tones returned from an automatic answering trunk (AAT) 17.

to confirm that it is working properly.

Note that automatic exchanges 1 and 2 include automatic exchanges 1 and 2.
There are subscriber line signaling equipment (LSE) 18 and 28 that send back various signal tones to various terminal devices accommodated in the terminal equipment.
4, and Incoming Trunk (ICT) 13.15.23 and 25 tests.

[Problem to be solved by the invention]

As is clear from the above explanation, in the conventional trunk test method, outgoing trunks (O
CT) 12 and 22, and incoming trunk (ICT) 1
In order to conduct tests 3 and 23, automatic switchboards 1 and 2
auto-answer trunks (AAT>16 and 26 respectively)
outgoing trunks (0GT) 14 and 24 used for facsimile connections, and incoming trunks (IC
T) In order to conduct tests 15 and 25, automatic answering trunks (AAT) 17 and 27 are installed in automatic exchanges 1 and 2, respectively. Accordingly, the number of automatic response trunks to be prepared in the automatic exchanges 1 and 2 has also diversified, which has led to problems that impair the economic efficiency of the automatic exchanges.

An object of the present invention is to realize a trunk test method that does not impair the economic efficiency of automatic switching equipment.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

In Figure 1, 1 and 2 are automatic switchboards, 500-■
500-n to 500-n are various terminal devices accommodated in the automatic exchange tatmr, 300-1 to 300-n are trunk lines corresponding to the various terminal devices 500-1 to 500-n, and 100-
1 to 100-n and 200-1 to 200-n connect trunk lines 300-10,000 to 300-n to automatic exchanges 1 and 2.
This is a trunk used for accommodating.

Reference numeral 400 is a subscriber line signaling device used in the present invention, which sends back required signal tones to various terminal devices housed in the automatic exchange 2.

[Effect]

When testing trunks 100-1 to 100-n and 200-1 to 100-n, one automatic switch 1
Various terminal devices 500-1 to 500-n provided in
The corresponding trunk lines 300-1 to 300-n
The incoming call is connected to the subscriber line signaling device 400 provided in the other automatic exchange 2 via the incoming call, and various terminal devices 500-1 to 500 are connected from the subscriber line signaling device 400 that is incoming connected.
-n by returning a predetermined signal tone corresponding to each trunk 100-1 to 100-n and 20-n.
Normal operation of 0-1 to 200-n is confirmed.

Therefore, even if the types of terminal equipment housed in an automatic exchange become more diverse, and the types of trunks accordingly become more diverse, it becomes possible to perform tests using a single type of subscriber line signaling device, and the reliability of the automatic exchange Economic efficiency improves.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram illustrating a trunk test method according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, the subscriber line signaling equipment (LSE) 18 and 28 provided in the automatic exchanges 1 and 2 are connected to the outgoing trunk (OCT) 12.14, similar to the subscriber line signaling equipment 400 in FIG. .22 and 24, and Incoming Trunk (IcT) 13.15.23 and 25 tests.

In FIG. 2, when testing the outgoing trunk (OCT) 12 and the large trunk (ICT) 23, the automatic exchange 1
By making a call from the telephone set 4 housed in the telephone and dialing a special number determined for testing the trunk for telephone connection, the outgoing trunk ( OCT) 12 and set the outgoing trunk (OCT) 12 to the outgoing connection state and the incoming trunk (ICT) 23 to the incoming connection state for the trunk line 3-1. The incoming call is connected as a telephone connection to the subscriber line signaling equipment (LSE) 28 installed in the automatic exchange 2 via the communication path pzs.

Subscriber line signaling equipment (LS) connected incoming as a telephone connection
E) 28 returns a ring tone for a predetermined period of time, and then returns a dial tone, simulating a call state, as in the case of an incoming call connection to the telephone.

The returned ringtone and dial tone are sent back to the network (NW).
) 21 communication path 1) 25, incoming trunk (ICT) 23
, relay &'X3-1, outgoing trunk (OCT) 12, and communication path p++ within the network (NW>11).

The caller from telephone 4 is subscriber line signaling equipment (LSE)
By listening to the ring tone and dial tone returned from 28, the outgoing trunk (OCT) 12 and the incoming trunk (
Confirm that ICT) 23 is operating normally.

Next Otoko Exit Trunk (OGT) 22 and Enter I ~ Rank (
When testing the ICT) 13, make a call from the telephone 5 housed in the automatic exchange 2, and dial the special number specified for testing the telephone connection trunk. is connected to the outgoing trunk (OCT) 22 via the communication path p2□, and the trunk line 3-2
The outgoing trunk (OCT) 22 is set to the outgoing connection state and the incoming trunk (ICT) 13 is set to the incoming connection state. An incoming call is connected to the provided subscriber line signaling equipment (LSE) 18 as a telephone connection.

Subscriber line signaling equipment (LS) connected incoming as a telephone connection
E) 18, like the subscriber line signaling equipment (LSE) 28, returns a ring tone for a predetermined time and then returns a dial tone.

The returned ringtone and dial tone are sent back to the network (NW).
) 11, communication path pI1, incoming trunk (ICT) 13,
It is transmitted to the telephone set 5 via the trunk line 3-2, the outgoing trunk (oGT) 22, and the communication path p2□ within the network (NW) 21.

The caller from telephone 5 is subscriber line signaling equipment (LSE)
By listening to the ring tone and dial tone returned from the outgoing trunk (OCT) 22 and the large trunk (
Confirm that ICT) 13 is operating normally.

Next, the outgoing trunk (OGT) 14 and incoming trunk (IC
T) 25, the network (NW '＞12
Outgoing trunk (OC) via communication path p13 set within
T) 14 and output trunk (
OCT) 14 in outgoing connection state, incoming trunk (ICT)
25 respectively to the incoming connection state, and
The incoming call is connected as a facsimile connection to the subscriber line signaling equipment (LSE) 28 provided in the automatic exchange 2 via the communication path pz6 set in the network (NW) 21.

The subscriber line signaling equipment (LSE) 28 connected as a facsimile connection sends back a predetermined signal tone in the same way as when connected to a facsimile terminal.

The returned signal tone is transmitted to the communication FIR p2 in the network (NW) 21 (ICT) 25, trunk line 3-
3. Outgoing trunk (OCT) 14 and network (N
W) 11 is transmitted to the facsimile terminal device (FAX) 6 via the communication path p+3.

By identifying the signal tone returned from the subscriber line signaling equipment (LSE) 28, the caller from the facsimile terminal (FAX) 6 can confirm that the outgoing trunk (OCT) 14 and incoming trunk (ICT) 25 are operating normally. Check that it worked.

Next, the outgoing trunk (OCT) 24 and the large trunk (IC)
T) 15, the network (NV /)21
Outgoing trunk (C
1'GT) 24, the outgoing trunk (OCT) 24 is connected to the middle line 3-4, and the large trunk (I
CT) 15 to the incoming connection state, and the subscriber line signaling equipment (LSE) provided in the automatic exchange 1 via the communication path p16 set within the network (NW) 11.
18 to make an incoming connection as a facsimile connection.

The subscriber line signaling equipment (LSE) 18 connected incoming as a facsimile connection is connected to the subscriber line signaling equipment (LSE) 28.
Similarly, a signal tone is sent back.

The returned signal tone is transmitted through the communication path pe6 within the network (NW) 11, the large trunk (ICT) 15, and the trunk line 3-4.
, outgoing trunk (OCT>24 and network (N
W) 21 is transmitted to the facsimile terminal device (FAX) 7 via the communication path pta.

The caller from the facsimile terminal (FAX) 7 can identify the signal tone returned from the subscriber line signaling equipment (LSE) 18 to confirm that the outgoing trunk (OCT) 24 and the large trunk (ICT) 15 are operating normally. Check that it worked.

As is clear from the above description, according to this embodiment, even when testing the outgoing trunk (OGT) 12.22 for telephone connection and the incoming trunk (ICT) 13.23, the outgoing trunk for facsimile connection (OCT) 14.24, and large trunks (ICT) 15.25, one type of subscriber line signaling equipment (LSE) 18 and 2
As shown in FIG. 3, automatic answer trunks (AAT) 16.26 and 17.8 are used for each connection type.
27 becomes unnecessary.

It should be noted that FIG. 2 is only one embodiment of the present invention; for example, telephones 4 and 5, and a facsimile terminal (
FAX>6 and 7 are not limited to those accommodated in the direct subsidiary software (NW) 11;
Alternatively, many other modifications may be considered, such as accommodating via a monitoring test device provided in 2, but the effects of the present invention do not change in either case.

〔Effect of the invention〕

As described above, according to the present invention, even when the types of terminal devices housed in automatic exchanges become diverse and the types of trunks accordingly become diverse, testing can be performed using one type of subscriber line signaling device. The economic efficiency of automatic exchanges will improve.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a trunk test method according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of a conventional trunk test method. In the figure, 1 and 2 are automatic switchboards, 3-1 to 3-
4. 300-4 to 300-n are trunk lines, 4 and 5 are telephones, and 6 and 7 are facsimile terminals (FAX).
, 11 and 21 are networks (NW), 12.
14.22 and 24 are outgoing trunks (OGT), 13
, I5.23 and 25 are incoming trunks (ICT), 1
6.17.26 and 27 are automatic answering trunks (AAT
), 18.28 and 400 are subscriber line signaling equipment (L
S E), 100-1 to 100-n, 200-1 to 2゜O-n are trunks, 500-1 to 500-n are trunks with cuttings.

Claims (1)

[Claims] Various terminal devices (
500-1 to 500-n), and the transmission is transmitted from the other automatic exchange ( 2) is incoming connected to a subscriber line signaling device (400) that sends back the required signal tones to various terminal devices accommodated in (500-1 to 500-n), each of the trunk lines (300-1 to 300-n) is accommodated in the one automatic exchange (1). Each trunk (100-1
100-n) and each of the trunk lines (300-1 to 1
00-n) in the other automatic exchange (2).