METHOD OF TESTING A DATA LINK IN FULL ELECTRONIC EXCHANGE SYSTEM

摘要

transmitting message asking test preparation in the first step of data link (DL2) periodically; receiving the message asking test preparation in the second step of data link (DL2); transmitting test data in the first step of data link (DL2) periodically; receiving test data in the second step of data link (DL2) and loop backing the test data; determining the normality of data link (DL2) by comparing the received test data with the transmitted test data.