Library /sys$common/syshlp/tcpip$telnet_help.hlb ENABLE, BINARY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Enables the transmission of data in binary mode.

    o  Enabled - The EOL (end-of-line) character is not mapped to
       Return LF (the carriage return / line feed combination).

       Use ENABLE BINARY when the remote host expects each line to
       end with a carriage return / line feed combination.

       Binary mode provides interaction when the remote host:

       -  Expects special characters

       -  Does not support automatic negotiation of the TELNET binary
          option

    o  Disabled - EOL is sent as Return LF (the carriage return /
       line feed combination).

    Default: DISABLE BINARY.

    DCL-Style Format

      ENABLE BINARY

    UNIX Style Format

      toggle binary