KR19990042272A - How to handle protection protocol using V5.2 - Google Patents

Abstract

The present invention relates to a protection protocol processing method using V5.2 that transfers resources of a failed link to another spare link when a link fails. In the prior art, when an error on a link occurs in a matching network. There was a drawback that the call was disconnected due to inconsistency of the path information between the matching network and the exchange by changing the link and transmitting it back to the switch to which the call was connected, but in the present invention, the matching network 110 If an error occurs in the link constituting the call path between the switch and the switch 190, the switch 190 resets the path to the spare link and transmits the reset information to the matching network 110, thereby matching the matching network 110 with the matching network 110. By eliminating errors that may arise from unified and inconsistent paths between exchanges, It is possible to improve the above-described drawbacks.

Description

How to handle protection protocol using V5.2

The present invention relates to a protection protocol processing method using V5.2. More particularly, the present invention relates to a protection protocol processing method using V5.2 to transfer resources of a failed link to another spare link when a link fails. .

As is well known in the art, V5.2 matching relates to the signaling protocol between the access network and the exchange recommended in European Telecommunication Standards (ETS) 300 and 347-1.

A matching network is a communication network that accepts analog and digital subscribers and communicates with the exchange via V5.2 matching. An exchange is an exchange that accepts subscribers through a V5.2 matching.

And, the protection protocol processing function of V5.2 matching can be composed of up to 16 links of 2.048Mbps / s in link between switch and matching network, and communication path carries information related to multiple 2.048Mbps / s link. do.

However, in the related art, when an error on a link occurs in the matching network, the link is changed and the call is transmitted to the exchange to which the call is connected again so that the path is changed. There was a flaw that occurs.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and when a failure occurs in a related communication path, it affects all users and thus a method for switching over a communication path when a failure occurs to improve reliability. The purpose is to provide.

In order to achieve the above object, the present invention provides a matching network performing a matching function with external devices of a system through control of a line controller (not shown), and performing a function of separating and controlling a V5.2 matching protocol. A V5.2 matching control unit, a V5.2 subscriber control unit for processing, operating and maintaining a call of a V5.2 matching subscriber, and a V5.2 data processing unit for processing a V5.2 subscriber data. In the determination step of determining whether an error has occurred on the link by generating system boot data by the matching network and the switching network, and when the error occurs on the link as a result of the determination at the determination step, the communication path is switched from the matching network to the exchange. The requesting step, the exchange discards the failed link and resets the communication path through the spare link, and the exchange knows that it has reset the communication path. And transmitting the communication path information to the matching network and resetting the communication path according to the communication path information received from the exchange. To provide.

1 is a block diagram of a system suitable for processing a protection protocol using V5.2 according to the present invention;

Figure 2 is a flow chart illustrating the steps of the protection protocol processing using V5.2 in accordance with the present invention.

<Description of the code | symbol about the principal part of drawing>

110: matching network 120: V5.2 matching control unit

160: V5.2 subscriber control unit 170: V5.2 data processing unit

180: input and output unit 190: exchanger

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings.

The configuration of the present invention will be described with reference to FIG. 1 to separate and match a matching network 110 performing a matching function with system external devices through a control of a line controller (not shown), and a V5.2 matching protocol. Performs a function of processing a V5.2 matching control unit 120 to perform a controlling function, a V5.2 subscriber control unit 160 to process, operate and maintain a call of a V5.2 matching subscriber, and a V5.2 subscriber data The V5.2 data processor 170, the V5.2 data processor 170, and the I / O unit 180 which receives an operator's command and receives and displays information from the exchange, through V5.2 matching. A switch 190 is configured to allow a connection with the matching network 110 and to freely transmit and receive a signal with the matching network 110.

Referring to Figure 1 in detail with respect to a preferred embodiment of a system suitable for processing the protection protocol using V5.2 in accordance with the present invention, the line control unit (not shown) controls the connection of the received signal, the subscriber When the call is inputted, it transmits the setup message from the subscriber, information message such as digit information and device number, call connection request, call termination request, and so on, and signals between the stations are connected. Do it.

The matching network 110 is a module that performs matching with external devices through control of the line controller. The matching network 110 includes an analog subscriber unit, a basic rate interface (BRI) and a primary rate interface (PRI), 23B + D or A digital subscriber, an analog relay line, a digital relay line, and a remote switching device including 30B + D) may be simultaneously connected through the V5.2 matching controller 120 to control a connection with a corresponding protocol.

The V5.2 matching controller 120 performs a function of separating and controlling a protocol of V5.2 matching. When a signal is received from the matching network 110, the V5.2 matching controller 120 transmits the received signal to the V5.2 subscriber controller 160. When the signal is received from the exchange 190, the received signal is matched with the matching network 110 through the V5.2 data processor 170.

The V5.2 subscriber control unit 160 receives call processing and other control signals from the matching network 110 or the V5.2 matching control unit 120 and performs a function of call processing, operation, and maintenance of the V5.2 matching subscriber. do.

The V5.2 data processor 120 performs a function of processing V5.2 subscriber data, and a signal received through the V5.2 matching controller 120 and the V5.2 subscriber controller 160 in the matching network 110. And process the data, and process the data received from the exchange 190.

The input / output unit 180 is connected to the V5.2 data processing unit to receive the operator's command to perform the received command, to inform the operator of the alarm information and the sleep count of the exchange, and to periodically inform the operator of the operating state of the exchange. At the request of the operator, other operating state of the exchange is displayed to the subscriber so that the operator can easily know the information of the exchange.

The exchange 190 matches the V5.2 through the V5.2 data processing unit 170, the V5.2 subscriber control unit 160, and the V5.2 matching control unit 120 to allow access to the matching network 110 to match. Transmit / receive signals and data with the network 110.

Referring to Figure 2 in detail with respect to the step of processing the protection protocol using the V5.2 in accordance with the present invention, by generating the system boot data to the matching network (110) and the switch 190 with the previously determined data normal It is determined whether an error has occurred on the link while the call processing is in progress (step 202).

If an error occurs on the link as a result of the determination in step 202, a request to switch the communication path from the matching network 110 to the switch 190, that is, request to change the link communication path for each current protocol. (Step 204).

That is, when the matching network 110 requests the V5.2 matching control unit 120 to switch the communication path, the V5.2 matching control unit 120, the V5.2 subscriber control unit 160, and the V5.2 data processing unit 170. Request a change of the communication path to the exchange 190 through

The V5.2 subscriber control unit 160 and the V5.2 data processing unit 170 transfer information through IPC (Inter Processor Communication).

The exchange 190 discards the failed link and reestablishes the communication path over the spare link (step 206).

When the exchange 190 transmits to the V5.2 data processor 170 that the communication path has been reset, the V5.2 data processor 170 corrects the communication path setting data and the procedure from the V5.2 subscriber controller 160. The communication path information reset by the request is transmitted to the V5.2 subscriber control unit 160 (step 208).

When the V5.2 subscriber control unit 160 sends a communication path of each protocol to the V5.2 matching control unit 120 through the V5.2 data processing unit 170, the V5.2 matching control unit 120 matches the matching network 110. Communication path information is transmitted (step 210).

The matching network 110 resets the communication path according to the communication path information received from the V5.2 matching controller 120 (step 212).

The above operation continues call processing unless an error occurs in the changed link. If an error occurs in the link again, the communication path is changed by a switchover, that is, a communication path reset.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

As described above, in the present invention, when an error occurs in a link constituting a call path between the matching network 110 and the switch 190, the switch 190 resets the path to a spare link and resets the information that is reset. By transmitting to 110, there is an effect of eliminating errors that may occur due to unified and inconsistent paths between the matching network 110 and the exchange.

Claims (1)

The matching network 110 performs a matching function with the external devices of the system through the control of a line controller (not shown), and the V5.2 matching controller 120 performs a function of separating and controlling the V5.2 matching protocol. ), A V5.2 subscriber control unit 160 that handles, operates, and maintains a call of a V5.2 matched subscriber, and a V5.2 data processing unit 170 that performs a function of processing V5.2 subscriber data. In exchanger 190, A determination step of generating system boot data to the matching network 110 and the switch 190 to determine whether an error has occurred on the link; Requesting switching of a communication path from the matching network (110) to the switch (190) when an error occurs on the link as a result of the determination in the determining step; The switch (190) discarding the failed link and reestablishing a communication path through the spare link; The switch (190) transmitting communication path information to the matching network (110) indicating that the communication path has been reset; The matching network (110) is a protection protocol processing method using V5.2, comprising the step of reconfiguring the communication path according to the communication path information received from the switch (190).