When not running C-Bit Parity mode, this attribute displays whether
the far-end SEF/AIS defect indicator is transmitted over the
outgoing line when the DS3 component has been unlocked or used
in operational testing. When running in C-Bit Parity mode, this
attribute displays whether a far-end alarm is sent over the Far-End
Alarm and Control (FEAC) channel when the DS3 component has
been unlocked or used in operational testing. When the DS3
component is locked and not used in operational testing, this
attribute is always set to off.