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ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
2-103
© 2000, ADC Telecommunications, Inc.
DLP-531
Page 5 of 7
Table 531-1. HLXC Configuration Fields, continued
FIELD TYPE OPTIONS DESCRIPTION DEFAULT
Half AIS Feature Toggle ENABLED This selection activates the Half AIS mode. An
Alarm Indication Signal (all 1s) is generated on
the outgoing DS1 path only when both HDSL
loops are in a LOSW (Loss of Synch Word) state.
In Half AIS mode when only one HDSL loop is in
a LOSW state, the transmitted DS1 signal will
continue to the payload containing transparent
data in the 12 channels related to the operating
loop. An all 1s pattern will fill the remaining 12
channels associated with the loop in the LOSW
state.
DISABLED
DISABLED This selection activates the Full AIS mode. An
AIS signal is generated on the outgoing DS1 path
whenever either one or both HDSL loops are in a
LOSW state.
HDSL Service State Toggle IS (In-Service) Allows HDSL alarms to be reported to the MPU,
and enables HDSL PM data collection. Must be set
to IS for reporting of equipment alarms.
OOS
OOS (Out-Of-
Service)
No HDSL alarms are reported to the MPU.
HDSL BER
Threshold
Toggle Enter a number from
10
-4
to 10
-9
The average Bit Error Ratios of the incoming
HDSL signals are monitored by the HLXC. By
monitoring BERs, the HLXC is capable of
triggering a minor alarm when any of the
monitored signals degrades below the BER
threshold level.
10
-7
HDSL SNR
Threshold
Toggle Enter a number from
–10 dB to
+30 dB
The lowest Signal-to-Noise Ratio allowed on the
HDSL loop before an alarm is triggered.
+5 dB
HDSL PA Threshold Toggle Enter a number from
+1 dB to
+40 dB
The highest Pulse Attenuation value allowed on
the HDSL loop before an alarm is triggered.
+33 dB
Network DS1 Source Toggle NRZ This tells the Craft that the network DS1 source is
at the backplane from the DS3 MUX.
NRZ
BIPOLAR This tells the Craft that network DS1 source is at
the Extender Card interface. If you select this
option when you are not using an Extender Card,
you will cut off the DS1 signal. See Section 4 of
this manual for information about the Extender
Card.
(continued)