ADTRAN 3060 specifications LP1 and LP2 Guidellines, No Alarm Conditions LTU REG NTU, NET Cust

Predicting performance based upon signal quality varies with each loop. Generally, a noise margin of 0 or higher will support a bit error rate (BER) of better than 10-7. The following guidelines correspond to the operation of the LTU faceplate LEDs labeled LP1 and LP2. See Table 3.

Table 3. LP1 and LP2 Guidellines

Margin	Color	Quality
Margin < 0	Red	Poor Loop Quality
0 < Margin < 2	Yellow	Marginal Loop Quality
Margin > 2	Green	Good Loop Quality

Figure 15 and Figure 16 depict the HDSL Alarms and Test Screens. Current alarm conditions are displayed on the Alarms Screen, while a self test or loopbacks may be initiated or terminated using the Test Screen.

Shelf: 1 Slot: 5		Total Access System					04/07/01 09:16
Unacknowledged Alarms:			MAJOR MINOR
Circuit ID:
				Alarms
		NO ALARM CONDITIONS
_____			_____		_____		_____
LTU		REG 1		REG 2		NTU
--->	<===>		<===>		<===>		<—-
NET							CUST
<---	<===>		<===>		<===>		—>
_____		_____		_____		_____

‘?’ - System Help Screen

Figure 15. Alarms Screen

12 Section 61182007L1-5, Issue 1 61182007L1-5A