KR970032213A - How to maintain the data link of the exchange - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Exchange system

2. The technical problem to be solved by the invention

A method for selecting and monitoring a communication channel to maintain a smaller number of communication channels than a communication line in an exchange network composed of multiple exchanges.

3. Summary of the Solution of the Invention

A method of maintaining a data link in an exchange having a common channel signaling method and having communication units that form a link of signaling data therein is a method of designating a normal and After checking the abnormal state, the process of storing in the line state area of these memories, and selecting the communication units in order to check the holding time of the data link, and if the holding time of the data link exceeds the set time, the line conversion request signal is A process of setting, a process of setting a line conversion request signal, and sequentially selecting communication lines when the line conversion request signal is set, and inspecting information on the line usage and line status area corresponding to the selected communication line. This process consists of establishing communication line and data link when it is in an unused state and normal state. It is broken.

4. Important uses of the invention

In the exchange, the number of communication units can be relatively reduced, and the connection between the communication unit and the communication line can be changed to improve the transmission efficiency.

Description

How to maintain the data link of the exchange

Since this is an open matter, no full text was included.

3 is a diagram illustrating a connection state between exchanges in a switching network according to the present invention.

4 shows the internal configuration of an exchange for forming a data link between exchanges in accordance with the invention in a switching network.

FIG. 5 is a diagram showing an internal configuration of a transmission line matching section in FIG.

6 is a diagram showing an internal configuration of a communication unit in FIG.

Claims (6)

A method for maintaining a data link in an exchange having a communication channel forming a link of signaling data therein using a common channel signaling method, the method comprising: designating communication lines connected to other exchanges in sequence to normalize a communication line. And checking an abnormal state and storing the same in a line state area of a memory, and sequentially selecting the communication units to check a holding time of a data link, and when the holding time of the data link exceeds a set time. A process of setting a conversion request signal, and sequentially selecting communication lines when the line conversion request signal is set, and checking the information on the line usage and line status area corresponding to the selected communication line, the line is in an unused state. It is a process of establishing a data link with the corresponding communication line in the normal state. A method of maintaining a data link of an exchange characterized by a flaw. The method of claim 1, wherein the set time is a maximum allowable time for transmitting and receiving data at least once when the data link is established. a first exchanger having m communication units and using a common channel signaling method, and a second exchanger having n (n> m) communication units and using a common signaling method. In a method of maintaining a data link of a first exchange in a switching network in which two exchanges are connected to k communication lines, the normal and abnormal states of the communication lines are checked while sequentially designating k communication lines connected to the second exchange. After that, the process of storing the data link in the line status area of the memory and selecting the m communication units sequentially checks the retention time of the data link, and when the retention time of the data link exceeds a preset time, the line conversion request signal. And setting the m communication units sequentially and checking whether or not the line conversion request signal is set. When the signal is set, the k communication lines are sequentially selected and the information on the line state and line use area of the selected communication line is checked, and when the corresponding communication line is in an unused state and is in a normal state, the corresponding communication line is selected. And maintaining a data link of the communication unit. The method of claim 3, wherein the checking of the communication line state comprises: checking a synchronization signal, slip occurrence, and alarm occurrence in the selected communication line; And a process of setting a communication line to a normal state, and a process of abnormally setting a corresponding communication line to the line state area when an abnormal state occurs in the inspection process. 4. The method of claim 3, wherein the maintaining of the data link comprises: controlling the selected communication unit to maintain the data link; inspecting whether the data link holding time elapses from the set time; And generating the line conversion request signal when the holding time exceeds the set time. The method of claim 3, wherein the converting of the data link comprises: checking whether the line conversion request signal is set in the selected communication unit; and when the line conversion request signal is set in the checking process, sequentially selecting communication lines. And a step of forming a data link of the changed communication line with the selected communication unit when the communication signal is not in use and is in a normal state in the state checking process. ※ Note: The disclosure is based on the initial application.