The threshold value that if EcIo goes above the threshold and
the service bit in c3gEcIoAbateNotifFlag is set, the
c3gEcIoAbateNotif notification for that service will be sent.
The absolute value of c3gEcIoAbateNotifThreshold
should be less than or equal to the absolute value of
c3gEcIoOnsetNotifThreshold (|c3gEcIoAbateNotifThreshold| <=
|c3gEcIoOnsetNotifThreshold|). e.g. setting
c3gEcIoOnsetNotifThreshold to -15 dB and then setting
c3gEcIoAbateNotifThreshold to -10 dB is not allowed and will
be rejected.