Library /sys$common/syshlp/dtehelp.hlb SET, DTE, /ERROR_ACTION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /ERROR_ACTION=CONTINUE (default)
       /ERROR_ACTION=EXIT

    Specifies the error action, either CONTINUE or EXIT.

    When an error is detected on the outgoing terminal line, the
    error is reported to the local system and an error message is
    displayed on your terminal.  If the error action is CONTINUE,
    then communication with the remote system continues
    uninterrupted.  If the error action is EXIT, then the local
    system immediately exits from the remote system.