Before revision: In telecommunications and data communication systems, an errored second is an interval of a second during which any 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 telecommunications and data communication systems; the type of error an errored second is an interval of a second during which any 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.