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

       /DIAL=(NUMBER:number[,MODEM_TYPE:modem-type])

    Allows a modem attached to the outgoing terminal line to be
    autodialed using the autodial protocol of that modem.  The
    NUMBER keyword is the telephone number to be autodialed and
    is a required parameter.

    Before you can dial a new number, you must first log out of the
    current remote system.

    The MODEM_TYPE keyword is optional. It can be used to specify
    any of the following modem types:

    o  DF03 (default)

    o  DMCL (any modem that uses the DEC Command Language)

    o  DF112

    Each modem-type requires a specific modem dialer code.  Check
    with your system manager which modem dialer codes are installed
    in your system.