The x25 protocol dte enable command starts the operation of the
    specified DTE. When the procedure completes, the status attribute
    state may be running, synchronizing, or unsynchronized.

    enable  [node node-id] x25 protocol dte dte-name

    The enable command will fail if the inbound dte class, link
    service provider, or x25 address characteristics are not set.
    The command will also fail if:

    o  There is a mismatch between the protocol profile and the link
       service provider profile.

    o  The link service provider either does not exist or is in use
       by someone else.

    o  The link service provider does not provide a maximum data size
       of the greater of 260, DTE maximum packet size +4.

    Example:

    enable x25 protocol dte dte-0