ADTRAN T200 H2TU-R Installation And Maintenance Manual page 7

Operation
For abbreviations used in the screen diagrams, see
Table 3.
Abbreviation
ES ..............................................Errored Seconds
SES ............................................Severely Errored Seconds
UAS ...........................................Unavailable Seconds
SF ...............................................Superframe Format
ESF ............................................Extended Superframe Format
B8ZS ..........................................Bipolar with 8 Zero Substitution
AMI ...........................................Alternate Mark Inversion
LBO ...........................................Line Buildout
BPV ...........................................Bipolar Violation
NIU ............................................T1 Network Interface Unit
S/N .............................................Serial Number
15M ............................................Fifteen-Minute period
24H ............................................Twenty-Four-Hour period
61222026L7-5B
Table 3. Screen Abbreviations
Definition
DSX/DS1 ........ (SF) Second in which a BPV or frame bit error occurs
(ESF) Second in which a BPV or CRC error occurs
HDSL2 ............ Second in which a CRC error occurs
DSX/DS1 ........ (SF) Second in which 1544 BPVs or 8 frame bit errors occur
(ESF) Second in which 1544 BPVs or 320 CRC errors occur
HDSL2 ............ Second in which 165 CRC errors occur
DSX/DS1 ........ Second in which there is a loss of signal or sync
HDSL2 ............ Second in which there is a loss of signal or sync
DSX/DS1 ........ Second in which a bipolar violation occurs
Section 61222026L7-5, Issue 2
The screens illustrated in Figures 6 through 21 apply
to an HDSL2 circuit deployed with ADTRAN's
HDSL2 technology. The circuit includes an H2TU-C
and an H2TU-R. Other configurations are possible
(i.e., HDSL2 repeater, other vendor's equipment) and
their displays will vary slightly from those shown in
this section.
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