150-319-142-01
December 22, 1997
Revision 01
HLU-319 List 4B
PairGain Engineering - Plant Series
23
System Setting Options
The following user options can be set only using an dumb terminal connected
to the Craft (RS-232) port: Circuit ID, DS0 Blocking, and Margin Alarm
Threshold.
Circuit ID Option.
This option is set by choosing H on the Main Menu.
1
Type in the alpha-numeric Circuit ID. If more than 24 characters are
entered, a Beep sounds and only the first 24 characters are accepted.
2
Type
to confirm. The ID appears in all HLU-319 List 4B screens. The
ID does not appear on HRU screens when the maintenance port is
accessed at the remote unit.
DS0 Blocking Option.
This option is selected on the System Setting Menu
by typing
. The DS0 channels are blocked or unblocked by entering each
channel number. Select multiple channels by inserting a space between each
entry. After all the settings are made, press to
to exit the blocking option
then
to confirm. The new choices are now installed. All blocked channels
are temporarily unblocked when a loopback test is running. This allows the
standard full bandwidth T1 loopback tests to be performed.
Margin Alarm Threshold.
This option is selected on the System Settings
Menu screen by typing
. Enter the desired minimum acceptable alarm
threshold by selecting a number from 0 to 15 (representing 0 to 15 dB). A
minor alarm to will occur if the margin on HDSL loop 1 (MAL1) or loop 2
(MAL2) drops below the selected threshold value. Since the margin display
can never drop below 0, choosing 0 for the margin threshold turns the margin
alarm off.
The HLU-319 List 4B processes B8ZS and AMI code inputs, regardless of
the DS1 code setting (AMI or B8ZS). When the HLU-319 List 4B is in the
AMI mode, it can receive B8ZS but can only transmit AMI.
The Self-test mode, which occurs when both HDSL loops are out of sync,
causes the Alarm Indicating Signal (AIS) pattern to exhibit occasional BPVs.
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Summary of Contents for 150-1140-42
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