/sys$common/syshlp/helplib.hlb SET, HOST, /DTE, Qualifiers, /LOG  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /LOG[=filespec]
       /NOLOG (default)

    Controls whether a log file of the session is kept.

    If you use the /LOG qualifier and omit the file specification,
    then the log information is written to the file DTEPAD.LOG.

    When used to log a modem session, the log file contains any noise
    that occurred on the phone line. For example, typing a file in
    order to get it recorded in the log file could result in noise
    being recorded along with the file data. Therefore, the use of a
    log file is not recommended for the purpose of file transfers.

    Compaq recommends that you use asynchronous DECnet to transfer
    files.