ADTRAN 3060 Protection Configuration Option Settings, Protection Options Settings Description

Table 4. Protection Configuration Option Settings

Protection Options	Settings	Description
Protection Mode	Auto	System automatically switches from Main to AUX with no user intervention.
		Switch is initiated by loss of sync on Main or exceeding BER Threshold.
		Alarms and switchover notification are generated via the SCU. Auto Mode
		also allows reversion back to Main once sync is reestablished or the error
		count drops below the BER Threshold.
	Auto Hold	Auto Hold provides system protection identical to Auto Mode, except that
		reversions are not allowed to the Main without user intervention. Once
		switchover has occurred to the AUX circuit, data can only be reverted by
		modifying any option on the terminal screen or by the pushbutton on the
		faceplate of the LTU.
	Manual Main	Manual Main requires manual switchover to the AUX circuit by user
		intervention. Switchover can be accomplished via the faceplate pushbutton
		or the terminal screen. The SCU will make notification of a Main circuit
		failure, but will not report switchover until the data is manually switched to
		the AUX circuit.
	Manual AUX	Data is manually forced to the AUX circuit and will remain there until the
		mode is changed via the terminal screen or by pushbutton on the faceplate.
		All other option settings are ignored while in this mode.
		In the Manual Disable mode, the Main and AUX circuits act as two
	Manual Disable	independent units. Separate data can run on either circuit without affecting
		the operation of the other. All other option settings are ignored while in this
		mode.
Minimum Hold-in Time	1-99 minutes	Defines the minimum time that data will remain on the AUX circuit. This
		option is only valid when in Auto or Auto Hold Protection Modes.
BER Threshold	1E-4, 1E-5, 1E-6,	Allows the user to set the Bit Error Rate that will cause switchover from the
	1E-7	Main to AUX circuit when exceeded. BER Threshold can also be set from
		the Main card's protection configuration and should coincide with the
		settings used on the AUX card.
BER Interval	5, 10, 15 minutes	Defines the interval over which errors will accumulate for comparison with
		the BER Threshold setting. BER Interval can also be set from the Main card's
		protection configuration and should coincide with the settings used on the
		AUX card.
Lock-in Hours	0-99	Defines duration of locking to the AUX circuit upon reaching the Switch to
		AUX Limit.
Switch to AUX	Limit 1-9	Defines the number of times switch can occur from Main to AUX over the
		defined Locking Check Interval before the system is locked to the AUX
		circuit for the defined Locking Hours.
Lock-in Check Interval	1-99	Defines the interval over which the Switch to AUX Limit is compared before
		locking in the data to the AUX circuit for the Locking Hours duration.

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