JPS6411199B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trunk line test for a private branch exchange that accommodates trunk lines connecting between offices. When performing an incoming connection test or a game outgoing test using the sender circuit and selection signal sending function used in normal exchange processing, conventionally, a dedicated processing function is provided for the sender control and selection signal sending control, and the corresponding A connection test was performed by sending out a selection signal in the signal format.

A conventional method using a dedicated processing function (most of which is software processing in an electronic exchange) for test sender control will be explained with reference to FIG.

In the figure, NW is the call path switch, JKL is the test lead-in jack board, DPOST is the DP originating sender trunk,
MFOST is the MF originating sender trunk, TRK is the trunk trunk, TOGT (DP) is the test output trunk for DP lines, TOGT (MF) is the test output trunk for MF lines, CC is the central control unit, SCN is the scanning unit,
STE is exchange test equipment, TTL is test incoming terminal,
OTL is a test transmission terminal. When conducting a trunk line incoming connection test, the tester separates the TRK for incoming calls to the exchange from the trunk line using JKL and connects it to the STE. In this case, the test equipment plays the role of an outgoing trunk of the remote exchange. Next, select the dial pulse format (DC/multifrequency code) and pulse speed (10PPS/DC for DC) that corresponds to the trunk line under test.
20PPS), set the presence/absence of a connection confirmation signal using an electric device, etc., to match the TRK, and further set the TTL number using an electric key, etc. This information is stored in the memory of the CC via the SCN in a dedicated processing program. When these preparations are completed and the exchange is activated from OTL, CC identifies the test call by OTL origination, captures the corresponding TOGT according to the above-mentioned signaling information, and connects the corresponding outgoing sender trunk and TOGT via NW. , TOGT, activates TRK via STE.

When TRK is activated, the incoming call is connected as usual.
Connect the TRK to the incoming call register trunk (not shown) and prepare to receive dialing. When the CC is ready to receive the dial, it sends the TTL number it held from the outgoing sender trunk. The dialed number is sent to the incoming register trunk in the order of outgoing sender trunk -> TOGT -> STE -> TRK, and as with normal call processing, TRK and TTL are connected and the test is completed.

As mentioned above, according to the conventional method, the dial pulse reception function is possible with normal processing, but the dial pulse sending function including sender control is a special method and requires a dedicated processing program, which has the disadvantage of increasing the amount of programs. . In other words, the information sent by the telephone key from the test equipment is different from dial information, and is a special format of information, and unless you have a dedicated processing function, you cannot identify this information and control the NW connection. Nakatsuta.

An object of the present invention is to solve the above-mentioned conventional drawbacks, and to provide a new test sender information transfer method that performs test connections by utilizing the call processing of a relay stand without providing a dedicated processing function. It is something to do. According to the present invention, in a private branch exchange having a function of transmitting and receiving a selection signal to a trunk line, the test device converts a selection signal according to the signal format of the trunk line under test into dialing information when making a test call,
The converted selection signal is sent to the trunk circuit captured by the trunk line origination connection conversion process via the relay stand, and the central controller reads the selection signal sent from the trunk circuit via the scanning device. This is achieved by performing the outgoing connection of the test call using the trunk line outgoing connection conversion processing function.

Embodiments of the present invention will be described below with reference to the drawings.
Figure 2 shows a typical relay stand for explaining the present invention.
FIG. 2 is a relay system diagram showing a trunk line origination connection from an ATT. In Figure 2, DPOST is the DP originating sender trunk, MFOST is the MF originating sender trunk, NW is the call path switch, TRK is the trunk line trunk, OPT is the operator trunk, ATT is the relay console, CC is the central controller, and SCN is the trunk. It is a scanning device. When the relay stand operator performs a trunk line origination connection, he performs an operation to start the trunk line origination connection and sets a selection signal.

These startup operation information is sent from ATT to CC via SCN.
It is read as follows. When the CC reads these startup operation information, it identifies the ATT trunk line origination connection, captures the corresponding TRK from the set selection signal, and selects the corresponding TRK.
DPOST or MFOST according to TRK and trunk line
The selection signal input from ATT is transmitted to DPOST or MFOST according to the signal system of the trunk line.
Send it to the game via TRK, and when the sending is completed, it will be OPT.
By connecting TRK via NW, you can make a call to the operator when the called party responds. FIG. 3 is a relay system diagram showing one embodiment of the present invention, and the various devices shown in FIG.
As stated in the figure. When conducting a trunk line incoming connection test, the tester pulls the TRK into the STE using the JKL in the same way as the conventional method explained in Figure 1. Signal system according to the drawn TRK and TTL
The operation of setting the numbers is the same as that described in FIG. 1. The relay line signaling system information set using a telephone key etc. is converted into 3-digit number information as a test code. In other words, the first digit is the test sender identification code A, the second digit is the signal system code B, and the third digit is the transmission TTL number digit number C. These three numbers A, B, and C are the TTL code.
It is added to the beginning of the number to form a series of selection signals. On the other hand, as shown in Figure 3, the STE's test transmission terminal OTL is accommodated in the NW via OPT, similar to the ATT in Figure 2, and the selection signal information and transmission connection activation information from the STE are also sent to the SCN through the same interface as the ATT. do. In other words, when the tester performs an incoming connection test operation (this operation is the same as the conventional method), the ABC+TTL number is set to SCN as the selection signal information and outgoing connection activation information through the same process as the outgoing relay connection at the relay stand.
Sent to via CC, CC is applicable by A and B
Capture TOGT and use DPOST or
Capturing MFOST and TOGT and DPOST or
Connect MFOST via NW and TOGT via STE
Start TRK. That is, the OPT has an interface for sending dial information from the ATT using the electronic key to the SCN, and furthermore, the selection signal sent from the test equipment is converted into dial information. Therefore, without having to provide a dedicated interface to send the selection signal from the test equipment to the SCN and notify it to the CC, it is possible to send the selection signal from the test equipment to the CC via the SCN by using OPT, which is the ATT interface. Can be notified. T.R.K.
As mentioned in the explanation of the conventional method, it takes
Connect TRK to the incoming call register trunk and prepare to receive dialing. CC when ready to receive dial
skips the first three digits of A, B, and C of the transmission selection signal and sends the remaining selection signal (TTL number) for the number of digits indicated by C from DPOST or MFOST.
Send to incoming register trunk (not shown) via TOGT, STE, and TRK. TRK and TTL when receiving TTL number on outgoing register trunk
is connected via NW and the test connection is completed.

As is clear from the above explanation, according to this method, it is possible to use the sender for test connections by reusing the relay stand's call processing without requiring dedicated processing, and it is possible to economize on the amount of software. .

In the present invention, an incoming connection test has been described as an example of the use of a test sender, but the effects of the present invention remain the same in tests using other test senders, such as an outgoing connection test.

[Brief explanation of drawings]

Fig. 1 is a relay system diagram of a conventional test sender information transfer system, Fig. 2 is a relay system diagram showing a trunk line transmission connection from a normal relay stand, and Fig. 3 is a test sender information transfer according to the present invention. FIG. 2 is a relay system diagram for explaining the system. NW is a call path switch, JKL is a test lead-in jack board, DPOST is a DP transmission register trunk,
MFOST is the MF originating sender trunk, TRK is the trunk line trunk, TOGT (DP) is the test output trunk for the DP line, TOGT (MF) is the test output trunk for the MF line, CC is the central control unit, SCN is the transmitter,
STE is exchange test equipment, TTL is test incoming terminal,
OTL is the test transmission terminal, ATT is the relay stand, and OPT is the operator's trunk.

Claims (1)

[Scope of Claims] 1. In a private branch exchange having a function of transmitting and receiving a selection signal to a trunk line, the test device converts the selection signal into dialing information according to the signal format of the trunk line under test when making a test call,
The converted selection signal is sent to the trunk circuit captured by the trunk line origination connection switching process via the relay console, and the central controller reads the selection signal sent from the trunk circuit via the scanning device. . A test sender information transfer system, wherein the test call is originated and connected by the trunk line origination connection exchange processing function.