Invokes the OpenVMS Phone utility (PHONE). The Phone utility is
    designed to simulate some of the features of actual telephone
    communications. You can use the Phone utility to communicate with
    other users on your system or with any other system connected
    to your system by DECnet-Plus or DECnet for OpenVMS. To invoke
    the Phone utility, enter the PHONE command at the DCL prompt and
    press RETURN.

    When entering the DCL command PHONE, you can supply qualifiers
    that modify the characteristics of the simulated telephone.

    Format

      PHONE  [phone-command]

1  –  Parameter

 phone command

    Specifies an optional Phone utility command that enables you to
    control your phone conversation. You can specify a PHONE command
    parameter as part of the PHONE command line, or you can enter one
    at any time during the phone conversation by typing the switch
    hook character (%) and the desired command. The following list
    summarizes the functions of each Phone utility command:

    ANSWER      Answers the phone when you receive a call.
    DIAL        Places a call to another user.
    DIRECTORY   Displays a list of the users you can call.
    EXIT        Exits from the Phone utility.
    FACSIMILE   Includes the contents of a file in your conversation.
    HANGUP      Cancels the current phone call.
    HELP        Displays information on how to use the Phone utility.
    HOLD        Places the other users in a call on hold.
    MAIL        Sends a message to another user.
    PHONE       Places a call to another user.
    REJECT      Rejects a call from another user.
    UNHOLD      Reverses the previous HOLD command.

    For a detailed description of each Phone utility command, invoke
    the Phone utilty and type HELP at the switch-hook prompt.

2  –  Qualifiers

2.1    /SCROLL

       /SCROLL
       /NOSCROLL

    Determines how new lines of text are displayed on the screen
    when the viewport becomes full. If /NOSCROLL is specified, the
    text lines are wrapped and new text appears on the top line of
    the viewport. /NOSCROLL improves the response time for terminals
    operating at slow speeds.

    If /SCROLL is specified, the text is scrolled up one line each
    time a new line of text is entered. The new line appears at the
    bottom of the viewport. /SCROLL is the default.

2.2    /SWITCH_HOOK

       /SWITCH_HOOK="character"

    Specifies the Phone Utility switch-hook character (%).  The
    switch-hook character must be entered before each Phone utility
    command that is entered during a conversation.

    PHONE commands are terminated by pressing RETURN or by entering
    the switch-hook character. Text typed without the switch-hook
    character is considered part of the conversation. You can use
    any nonalphanumeric character as the switch-hook character.
    Enclose the character in quotation marks. The default switch-hook
    character is the percent sign (%).

2.3    /VIEWPORT_SIZE

       /VIEWPORT_SIZE=n

    Specifies the maximum number of lines in a viewport, including
    the heading line and the bottom line of dashes. The valid range
    is 3 to 10 lines. Smaller viewports will improve the response
    time on terminals operating at slow speeds. The default viewport
    size is automatically reduced as more participants enter the
    conversation.

3  –  Examples

    1.$ PHONE

      The DCL command PHONE invokes the Phone utility. If you issue
      the PHONE command without qualifiers or parameters, the Phone
      utility prompts you for the name of the person you want to
      call (or any other PHONE command) with the default switch hook
      character, the percent sign. The Phone utility also displays
      the title "VMS Phone Facility", and the date, and sets up your
      viewport.

    2.$ PHONE ANSWER

      Use this command to answer a call.

    3.$ PHONE DIRECTORY TAMPA::

      The PHONE command causes the Phone utility to display a
      directory of users available on node TAMPA.

    4.$ PHONE /SWITCH_HOOK="\" /VIEWPORT_SIZE=5  EUGENE::MALCOLM

      The PHONE command defines the SWITCH_HOOK character to be the
      backslash (\), restricts the VIEWPORT_SIZE to five lines, and
      places a call to user MALCOLM on node EUGENE.