Before revision: In data communication , an errored second is an interval of a second during which any bit error whatsoever has occurred, regardless of whether that error was a single bit error, or a complete loss of communication for that entire second, is not important for the purpose of counting errored seconds.
After revision: In data communication , an errored second is an interval of a second during which any systems error whatsoever has occurred, regardless of whether that error was a single bit error, or a complete loss of communication for that entire second, is not important for the purpose of counting errored seconds.