JPH056948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to switching equipment. More specifically, it relates to testing methods for conference trunks in, for example, electronic exchanges.

(Conventional technology) Conventional electronic exchanges provide conference telephone services with 3
Simultaneous calls between three parties were realized by connecting the three parties to a three-terminal conference trunk housed on the trunk side of the communication path network.

Such a conference trunk was tested using three pseudo terminals. These pseudo terminal devices consist of a calling test device that makes pseudo calls, a receiving test device that receives the pseudo calls, and a third test device that simulates a third party intervening in the conference call. It is mounted on a rack. These pseudo terminal devices were originally provided for testing call waiting trunks. The normality of the trunk was tested by connecting it to a conference trunk and checking its three-way call function from the monitoring test seat.

(Problem to be Solved by the Invention) However, as will be seen, conventional conference trunk testing is limited to testing three-way calls;
If this were to be tested in a system requiring four-party conference call service functionality, a fourth pseudo-terminal had to be installed. There is a problem in that adding such a pseudo terminal device involves modifying the hardware of the existing system.

The present invention solves these drawbacks of the prior art,
An object of the present invention is to provide a conference trunk testing method capable of testing a conference trunk having a conference call function of four or more parties without modifying hardware.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a conference network which is accommodated in a communication path network of an exchange and has at least first, second, third and fourth communication terminals. In a conference trunk test method for testing the functions of a conference trunk, a calling test device, a receiving test device, and a third test device are connected to the first, second, and third call terminals, respectively, via a call path network. , connect the fourth call terminal to the auto-answer trunk to test the functionality of the conference trunk.

(Operation) According to the present invention, when the operator sets up a test connection, the first call terminal of the conference trunk is connected to the outgoing test device via the call path network, and the second call terminal is connected to the incoming test connection. and a third call terminal is connected to a third test device. The fourth call terminal is connected to an auto-answer trunk that functions as an invitee. This tests the conference call functionality of the conference trunk.

(Embodiment) Next, an embodiment of the conference trunk testing method according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to the figure, the configuration of a test connection of a conference trunk in an embodiment of an electronic exchange with a time division channel device TDNW is shown. In the same figure,
Portions relevant to understanding the present invention are illustrated, and illustrations of functional units that are not directly related to this, such as functional units that perform normal call processing, are omitted.

On the trunk side of the time division communication path device TDNW,
In this embodiment, a conference trunk CFT having four communication path terminals 1 to 4 is accommodated. The conference trunk CFT is a trunk device that connects subscribers to each of the terminals 1 to 4 via the time division communication path device TDNW to conduct a conference call.

In this embodiment, the conference trunk CFT has a call function between conference call convenor A and conference call invitee B,
It has five types of call functions: a call function between convener A and invitee C, a three-party call function, a call function between convener A and invitee D, and a four-party call function.

A highway HW from the line concentrator LC is accommodated on the line side of the time division communication path device TDNW.
The line concentrator LC accommodates subscriber circuits SLIC, most of which are connected to telephones 10. The remaining subscriber circuit SLIC includes intra-office trunk line 1.
2 connects the originating test device OTE, the terminating device TTE and the third test device MTE. These connections are made via the main distribution rack MDF.

Time-division channel device TDNW and line concentrator LC
is controlled by a central control system that controls the entire system, that is, a central controller CC. The central controller CC is constituted by a processing system that executes various processes such as maintenance and testing in addition to normal call processing.

In this embodiment, the originating test device OTE is a pseudo originating terminal device that issues a pseudo call to test, for example, a call waiting trunk or a conference trunk CFT. Termination test equipment TTE is a pseudo-termination terminal device that terminates the pseudo call. Third
The test device MTE is a pseudo terminal device that simulates a third party in call waiting and conference calls. These are accommodated in the maintenance switch MSW via the analog/digital signal exchange device A/D and the multiplex converter MUX.

The maintenance switch MSW also accommodates an automatic response trunk AAT on the same side as these pseudo terminal devices. The auto-answer trunk AAT was originally connected to the test equipment via the time-sharing channel device TDNW,
Used to confirm calls by generating various signal tones such as dial tone.

On the opposite side of the maintenance switch MSW, there is a signal transmitting/receiving device SGE and a TEL interface device.
A monitoring test seat STD is accommodated via TELIF. The signal transmitting/receiving device SGE is a device that generates various signal tones such as a dial tone for test connections. Further, a common highway CHW is accommodated on the same side, and this is a highway that is accommodated on the line side of the time division communication path device TDNW and is used to transfer call information between the two. A Jakky lamp board JKL is installed in the monitoring test seat STD, and the maintenance personnel
You can operate this to test the system,
It is also possible to monitor the system status.

The maintenance switch MSW is a pseudo terminal device OTE,
TTE, MTE, and auto-answer trunk AAT;
This is a maintenance communication path switch that establishes a connection between the signal transmitting/receiving device SGE and the monitoring test seat STD, and is controlled by the central controller CC.

These maintenance-related devices are mounted on the monitoring test rack STF to establish an interface between maintenance personnel and this system. Note that the number of each device to be installed is selected depending on the scale of the system, and is not necessarily limited to the number shown in the figure, and a plurality of devices may be installed as appropriate.

The CFT test, which tests the functions of the conference trunk CFT, is a similar operation when a pseudo terminal device is connected to the conference trunk CFT in place of the telephone 10 of the general subscriber and a conference telephone service is provided to the general subscriber. This is to check the communication function between each pseudo terminal device and confirm the normality of the conference trunk CFT.

In this embodiment, the first terminal 1, the second terminal 2 and the third terminal of the conference trunk CFT are connected as shown in the figure.
Connect terminal 3 to the time division communication path device TDNW, line concentrator.
The outgoing test equipment OTE, the incoming test equipment TTE and the third
Connect to the test equipment MTE and connect the fourth terminal 4 to the automatic answering trunk via the common highway CHW, the time division channel unit TDNW and the maintenance switch MSW.
This is done by connecting to AAT. These are the outgoing test equipment OTE, the incoming testing equipment TTE, and the third
Test connections with the test equipment MTE and auto-answer trunk AAT are instructed by operating the JKL panel, and calling, answering, disconnecting, hooking, and number dialing can be performed for them.

To check the health of the conference trunk CFT,
All five of the above-mentioned calling features of the conference trunk CFT need to be verified.

First, to confirm the A-B call function, the operator operates the JKL board in the monitoring test seat STD and calls the calling test equipment OTE as convener A from the same equipment OTE. In response, the central controller CC establishes a connection between the monitoring test seat STD and the transmitting test equipment OTE via the maintenance switch MSW.

Therefore, the operator sends invitee B to the incoming call testing device.
As a TTE, dial the "conference telephone service start special number + TTE equipment call number" from the STD monitoring test seat. "The central controller CC responds to this by controlling the line concentrator LC and the time-division channel unit TDNW, and from the originating test equipment OTE to its subscriber circuit SLIC.
The highway through which the cable is connected is connected to the first terminal 1 of the conference trunk CFT. As a result, a communication path connection was established from the first terminal to the monitoring test seat STD. The central controller CC also has a maintenance switch MSW,
Controls the line concentrator LC and time-division channel device TDNW, respectively, and connects the same conference trunk as shown in the figure.
A communication path connection is set up from the second terminal 2 of the CFT to the incoming call test equipment TTE. The operator is in the monitoring test seat.
At STD, the call between the originating test equipment OTE and the terminating test equipment TTE is confirmed by the response of the terminating test equipment TTE.

Next, check the A-C call function. Transmission test equipment
Operate the monitoring test seat STD in the state of communication between the OTE and the incoming test equipment TTE, perform hooking from the outgoing test equipment OTE, and dial the selected number of the third testing equipment MTE. The third test equipment MTE corresponds to invitee C. The central controller CC detects hooking and identifies the connection request of the invitee C,
In the same way as above, install the maintenance switch MSW and concentrator.
The LC and the time division communication path device TDNW are respectively controlled to set a communication path connection from the third terminal 3 of the conference trunk CFT to the third testing device MTE as shown in the figure. The operator at the monitoring test seat STD sends a signal to the test device using the response from the third test device MTE.
Confirm the call between OTE and third test equipment MTE.

Next, we will use the outgoing test equipment OTE as a three-party call function.
and the terminating test equipment TTE, as well as between the third test equipment MTE and the terminating test equipment TTE. This confirms the normality of the conference trunk CFT up to the third terminal 3.

Furthermore, confirm the A-D call function. Operate the monitoring test seat STD in a three-party conversation state and transmit the calling test device.
From the OTE, dial the selected number of the auto-answer trunk AAT. The automatic response trunk AAT corresponds to the invitee D. The central controller CC detects the hooking and identifies the connection request of the convenee D, and controls the maintenance switch MSW and the time division communication path device TDNW in the same manner as described above, and connects the trunk for the same conference as shown in the figure.
A communication path connection is established from the fourth terminal 4 of the CFT to the automatic answering trunk AAT via the common highway CHW. The operator sends a call to the test equipment in response to the automatic response trunk AAT at the monitoring test seat STD.
Verify calls between OTE and auto attendant and trunk AAT.

Finally, as a 4-party call function, the calling test device
Calls between the OTE and the auto-answer trunk AAT, between the incoming test equipment TTE and the auto-answer trunk AAT, and between the third test equipment MTE and the auto-answer trunk AAT
Check the calls between. This confirms the normality of the conference trunk CFT up to the fourth terminal 4.

In this example, the conference trunk
The call functionality of the fourth terminal 4 of the CFT is tested using the existing auto-answer trunk AAT. Therefore, a conference trunk CFT with a four-party call function can be tested without modifying the hardware.

In the case of a conference trunk having multiple conference call functions including five-party calls or more, the conference call function can be tested in the same manner by connecting a plurality of corresponding auto-answer trunks to their call terminals. Alternatively, the third terminal 3 of the conference trunk CFT may be configured to be connected to a similar automatic response trunk AAT to test the three-party call function, without connecting it to the third testing device MTE.

(Effects of the Invention) As described above, according to the conference trunk testing method of the present invention, the existing automatic answering trunk is used to test the call function after the third terminal of the conference trunk. Functional testing of conference trunks for four-party calls or higher can be performed without modifying the hardware.

[Brief explanation of the drawing]

The figure is a connection configuration diagram showing a test connection of a conference trunk in an embodiment in which the conference trunk test method according to the present invention is applied to an electronic exchange having a time-division channel device. Explanation of symbols for main parts, AAT...Automatic response trunk, CC...Central control unit, CFT...Conference trunk, CHW...Common highway, MSW...
...Maintenance switch, ME...Third test equipment, OTE...
...Transmission test equipment, STD...Monitoring test seat, TDNW
...Time division communication path equipment, TTE...Incoming call test equipment.

Claims (1)

[Scope of Claims] 1. A conference trunk test method for testing the function of a conference trunk that is accommodated in a communication path network of an exchange and has at least first, second, third, and fourth communication terminals. The method includes: connecting the first, second and third call terminals from the call path network to the outgoing test device, incoming test device and third test device, respectively, of the monitoring test stand via the main distribution means; A test method for a conference trunk, characterized in that the function of the conference trunk is tested by connecting a fourth call terminal from the communication path network via a common highway to an automatic response trunk of a monitoring test stand.