Magazine article Information Today

EUSIDIC's 1993 Data Network Reliability Survey

Magazine article Information Today

EUSIDIC's 1993 Data Network Reliability Survey

Article excerpt

EUSIDIC, the European Association of Information Services, and EUROLUG, the European Online User Groups association, have released the details of their 1993 survey of the reliability of data communications networks.

The survey, which has been carried out regularly since 1986, was undertaken during March 1993 by members of national Online User Groups through Europe. Over 4,000 calls on data communications networks were recorded during one week and the causes of communication failure were identified, from the users perception.

The EUSIDIC/EUROLUG surveys have proved controversial in the past, as the Telecommunications Operators have accused them of providing misleading data because the survey measures the whole data call and not just the data network part. The response from EUSIDIC/ EUROLUG has always been that users see the calls "end to end" - from their terminal to the server and back, not as a series of data communications switches. Since its inception in 1986 the survey had graded the quality of communications as the user sees it.

The 1993 survey reveals a failure rate, which can be attributed to telecommunications, of 10.34 percent. The overall failure rate, due to all causes, including server and user errors, was 12.75 percent.

This figure of 10.34 percent compares directly with 13.67 percent in 1991; 14.29 percent in 1990; and 17.96 percent in 1989.

The overall rate of failures of 12.75 percent compares with 19.5 percent in 1991; 19 percent in 1990; and 24. …

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