Applies only to asynchronous lines.  Indicates whether the connection
 between the dialin node (the local node) and the remote node is to be
 broken when the line is turned off.  Possible values are:

 	ENABLED
 	DISABLED

 For dynamic lines the value of this parameter is dependent upon whether
 the terminal characteristic in the DCL command SET TERMINAL was set to
 HANGUP or NOHANGUP.  If HANGUP was specified, the default is
 HANGUP ENABLED; if NOHANGUP was specified, the default is HANGUP DISABLED.
 For static lines the default is HANGUP DISABLED.