JPS63124654A - Connection path check system - Google Patents

Abstract

PURPOSE:To guarantee the normality of the entire path by checking the normality of a path between check sections corresponding to a digital line depending on a path connection data mutually. CONSTITUTION:Digital pattern generators 20A, 20B and digital pattern checkers 26A, 26B are provided to subscriber circuits 2A, 2B respectively, and the generators 20A, 20B and the checkers 26A, 26B are started under the control of a path connection means 10 to obtain the result of check.

Description

[Detailed Description of the Invention] [Summary] Paths are connected in a network of a digital switching system, and a digital pattern signal is sent from the line compatibility checking section of one of the paths to the path, and then the signal of the other side is transmitted through the path. The digital pattern signal sent to the line compatibility checking section is checked to determine the normality of the connected path.

[Industrial application field]

The present invention relates to a method for checking paths connected in a network of a digital switching system, and more specifically, to a method for checking a path connected from one line compatibility checking section to the other line compatibility checking section.

In a digital switching system, switching paths are connected in the switching network so that required communications can be carried out between one subscriber and the other subscriber corresponding to the path. In order to perform such communication successfully, it is essential that the connected paths are connected normally.

[Conventional technology]

One conventional means for checking the normality of connection paths in a digital exchange network is to provide a loop bank circuit 4 in the subscriber circuit 2 and a special trunk 8 in the network 6, as shown in FIG. When checking the connection path, under the control of the control device (path connection means) 10, a digital pattern signal is generated from the digital pattern generator 81 of the special trunk 8 corresponding to the caller before the path connection is made. The digital pattern signal is returned via the loopback circuit 4 in the subscriber circuit 2, and the returned digital pattern signal is detected by the detection circuit 82. The same thing is done for the line handling section 2 that handles incoming calls. When the normality display signals from these rain detection circuits are given to the control device 10, the paths between these subscribers are connected.

Another means, as shown in FIG. 6, is to check the parity of data transferred through a path connected to the digital network 6 by a parity check circuit 12 for a path connected to the digital network 6 by the control device 10. This method attempts to guarantee the normality of the path.

[Problem that the invention seeks to solve]

In the former conventional method, it can be said that the normality of the path between the line handling section that handles outgoing or incoming calls and the special trunk is completely checked, but the normality of the path between the line handling section that handles outgoing and incoming calls and the The normality of the path to the line handling section for calls cannot be guaranteed.

Regarding 1&, it can be said that the normality of the connected path is guaranteed within the range of its parity check ability, but if there is an error in the path connection data used by the control device for the connection, would result in the loss of its guarantee ability.

The present invention was created in view of such problems, and an object of the present invention is to provide a connection path check method that improves the ability to guarantee the normality of a connection path.

[Means for solving problems]

FIG. 1 shows a block diagram of the principle of the present invention. As shown in this figure, the present invention provides a digital pattern generator 20 and a digital pattern checker 26 in each line corresponding section of a plurality of line corresponding sections 2, and connects the digital pattern generator 20 with a digital network 6 by a path connecting means 10. A check start signal is sent from the path connecting means 10 to the digital pattern generator 20 and the digital pattern checker 26 corresponding to the path via the check starting means 28, and both are activated and connected to the line corresponding section corresponding to the connected path. A connected path check method in which a digital pattern is mutually sent to the other party, the connected path is checked based on the received pattern by a corresponding digital pattern checker, and the result is notified to the path connecting means 10 via the notification means 30. It is composed of

[For production]

The digital pattern generator 20 and the digital pattern checker 26 of the path-compatible line corresponding section connected in the digital network 6 by the path connecting means 10 are activated by the path connecting means 10. Each digital pattern signal is sent to the other party's digital pattern checker via the connected path, where the received pattern signal is checked, and the result is sent to the path connection means 10 and determined according to the received result. Treatment 1 will be carried out.

In this way, it is possible to guarantee the quality of the path connection between the line corresponding parts and the normality of the path connection against incorrect path connection data.

〔Example〕

FIG. 2 shows an embodiment of the invention. In this figure, each subscriber circuit 2A, 2B has a digital pattern generator 2O.
A, 20B and digital pattern Chesoka 26A, 2
6B and under the control of the path connection means 10 the generator 20
A characteristic part of the present invention is that the checker A, 20B and the checkers 26A, 26B are activated to obtain the check results. The other components are the same as the conventional components shown in FIGS. 5 and 6, so the same reference numerals are given and the explanation thereof will be omitted.

FIG. 3 shows a detailed diagram of the subscriber circuit 2 which forms the main part of the invention. In this figure, a digital pattern generator 20
The output of the analog/digital conversion circuit 21 is connected to the upstream highway 3 to the network 6 via the OR circuit 24, and the output of the digital/analog conversion circuit 2
A digital pattern checker 26 is connected to the down highway 5 connected to the 2, and constitutes the main part of the present invention in terms of hardware. The generator 20 and the checker 26 are configured to be activated by receiving a check start signal from the path connecting means 10 via a line 28, and the checker 26 is configured to activate the check start signal from the path connecting means 10. A signal line 30 extends therethrough. The configuration for capturing the caller for activation is the same as the conventional one, and since it does not seem to interfere with understanding the gist of the present invention, the illustration of these components in the drawings will be omitted. In addition, 23 in FIG. 3 is a hybrid coil (H), 24 is a battery supply/monitoring circuit (B/S), 2s is a ringer signal supply circuit (R), and 2G is a test relay (T).

How the connection path is checked under the above configuration will be explained below.

As shown in FIG. 4, when caller A goes off-hook, its state is captured in the same manner as in the prior art, and the dialed number from caller A is given to the path connection means 10 (see ■ in FIG. 4). The path connecting means 10 connects a path to the called party B based on the dialed number. This is represented by the dash-dotted line in FIG.

After the connection, the control device 10 sends a check start signal to the subscriber circuits 2A, 2B via the line 28 to activate the digital pattern generators 20A, 20B and the digital pattern checkers 26A, 26B (see Figure 4). reference).

The digital pattern signals from the activated generators 20A and 20B are sent to the corresponding uplink highway, and then to the checker 76B of the other subscriber's circuit via the path of the network 6 as indicated by the dash-dotted line arrow in FIG.

It is sent to 26A. If the check is OK, a check OK signal is sent from the checkers 26B and 26A to the path connection means 10 via the line 30 (
After receiving the check OK signal, the path connecting means 10 causes caller A to send a ringback tone signal in the same manner as before (see - Send a signal (see ■ in Figure 4). and,
When called party B answers (see ◯ in FIG. 4), the connected path can be maintained for as long as necessary for the call.

If the above-described OK signal is not returned to the control device 10, other actions are taken, such as sending a busy signal to caller A.

In addition, although the above embodiment described checking while the exchange is in operation, it can also be used for maintenance etc.Also, although an example was described in which a digital pattern generator and a digital pattern checker are provided in the subscriber circuit, this is not applicable. The present invention does not preclude implementing the gist of the present invention in a system by providing these two elements in a line corresponding section similar to the above.

〔Effect of the invention〕

As described above, according to the present invention, when checking between the digital line compatible check units determined by path connection data, each check unit mutually checks the normality of the connected path. It is possible to check the health of the entire path instead of just checking the health of the path, and the health of the entire path can be guaranteed.
It is also possible to guarantee the normality of the connection path against errors in path connection data.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the principle of the present invention; Fig. 2 is a diagram showing an embodiment of the invention; Fig. 3 is a block diagram of the subscriber circuit shown in Fig. 2; Fig. 4 is a diagram showing a check sequence; Figures 5 and 6
The figure is a block diagram of a conventional check method. 1 and 2, 2.2A and 2B are line support units (subscriber circuits), 6 is a digital network, 10 is a path connection means, 20.20A and 20B are digital pattern generators, 26.26A, 26B is a digital pattern checker, 28 is a check start means, and 30 is a notification means. Ntomi'en day moon 9 fishery 7 mouth...I7 figure 1

Claims (1)

[Scope of Claims] A plurality of line corresponding parts (2), a digital network (6), and a path connecting a certain line corresponding part of the plurality of line corresponding parts to another line corresponding part to the network. (6), a digital pattern generator (20) and a digital pattern checker (26) provided in each line corresponding section and activated by a check start signal, and a path connecting means (10) formed in the path connecting means ( check start means (28) for supplying a check start signal from the path connecting means (10) to a path-compatible line corresponding unit connected in the network (6) by 10); and from the digital pattern checker (26). Notifying means (30) for notifying the check result to the path connecting means (10)
A connection path check method characterized by providing the following.