The state of the line signals required to indicate that the external
equipment is in a good state (that is, data transfer can proceed).
Note that both DTE and DCE signals are specified in this attribute.
The appropriate set of specified signals will be turned on or checked
according to the actualLinkMode. The value of this attribute must
be a superset of that of the readyLineState attribute.
See also linkMode.
Description of bits:
indication(0)
control(1)