Q-Margin defines how much operational system margin that is
available for a given circuit. Minimum margin should be
defined by one's Network Engineering Group. Q-margin is
expressed in dBQ. dBQ is a scale relative to min required
Q-Factor given by coiIfControllerQFactor.
This object gives the value of the Q-Margin represented in one
hundredths of a dBQ.
Example: The value 236 represents a Q-Margin of 2.36 dBQ.