Screen Abbreviations - ADTRAN HTU-C NB Installation And Maintenance Practice

Screen Abbreviations

For abbreviations used in the screen diagrams, see
Abbreviation Definition
ES Errored Seconds
• DSX/DS1
• HDSL
SES Severely Errored Seconds
• DSX/DS1
• HDSL
UAS Unavailable Seconds
• DSX/DS1
• HDSL
SF Superframe Format
ESF Extended Superframe Format
B8ZS Binary 8 Zero Substitution
AMI Alternate Mark Inversion
LBO Line Build Out
BPV Bipolar Violation
• DSX/DS1
NIU T1 Network Interface Unit
S/N Serial Number
15M Fifteen-minute period
24H Twenty-four-hour period
61247002L1-5A
Table 5. Screen Abbreviations
– SF: Second in which a BPV or frame bit error occurs
– ESF: Second in which a BPV or CRC error occurs
– Second in which a CRC error occurs
– SF: Second in which 1544 BPVs or 8 frame bit errors occurs
– ESF: Second in which 1544 BPVs or 320 CRC errors occur
– Second in which 165 CRC errors occurs
– Second in which there is a loss of signal or sync
– Second in which there is a loss of signal or sync
– Second in which a bipolar violation occurs
Table 5.
User Interface
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