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Table 9. Span Status Fields and Descriptions
Field
Description
HLU/Ver w.x-y "w.x" = the software version number of the HLU. "y" = List # of the HLU.
HRU or
"w.x" = the software version number of the HRU or HDU. "y" = List # of
HDU/w.x-y
the HRU or HDU.
Time
Time of day when Span Status was checked.
Date
Date when Span Status was checked.
Alarms
Presence or absence of alarm conditions. See
Loopback
Indicates Off condition or identifies specific active loopback.
Margins
Indicates the excess signal to noise ratio at either the HLU or HRU,
relative to a 10
First value is current margin.
Second value is minimum margin since last cleared.
Third value is maximum margin since last cleared. NA indicates that the
margin is not available.
Pulse
Indicates the attenuation of the 2B1Q pulse from the distant end. HiGain
Attenuation
operates with pulse attenuations up to 28 dB. This value is related to the
cable pair's 196 kHz loss. The pulse attenuation is a more direct
indication of the loop attenuation to the 2B1Q signal than the 196 kHz
loss.
INS Loss *
Indicates the approximate attenuation of the HDSL loop at 196 kHz. It is
generated by multiplying the pulse attenuation by 1.25.
PPM Offset
Indicates the relative offset of the crystal oscillator in the HRU-419 from
the HLUs crystal oscillator. Any value between ± 64 is adequate.
HDSL 24 Hour
The number of one-second intervals that contained at least one CRC
ES
error. This value is a running total of the last 24 hours.
HDSL 24 Hour
The number of seconds during the last 24 hours the HDSL loop was out
UAS
of synchronization.
DS1 BPV
The number of seconds during the last 24 hours in which at least one
Seconds (ES)
bipolar violation was detected on the DS1 input.
DS1 UAS
The number of seconds during which the DS1 input signal was absent
Count
(125 or more consecutive 0s).
Frame type
Type of DS1 framing used on the input stream (SF, ESF, Unframed or No
Activity).
Code type
Type of DS1 line coding used (AMI, B8ZS, AMI: ZBTSI or B8ZS: ZBTSI).
The latter two conditions indicate the code type that is being received
when HiGain is set to its ZBTS mode. In either the AMI or B8ZS DS1 code
mode, it displays the selected code as opposed to the code type that is
actually being received.
* INS Loss displayed only in the Span Status screen for the HLU-231 List 7B and List 7D.
HRU-419 List 1
-7
Bit Error Rate.
September 25, 1998
Installation
Table
10.
Table
11.
27
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