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15 • SDH
Model 6511RC Switch Matrix Administrators’ Reference Guide
136
Alarm Status
Figure 71. SDH Overview window—Alarm Status section
Sections, Lines, and Paths
. Between a pair of SDH multiplexers, an SDH circuit may comprise multiple cable
segments connected by intermediate devices such as signal repeaters and add-drop multiplexers (See figure 61).
A cable segment with a regenerator at one or both endpoints is called a Section. A set of cable segments with an
add-drop multiplexer at one or both endpoints is called a Line.An SDH circuit with full-service multiplexers at
both endpoints is called a Path.
Figure 72. Section, path, and line within an SDH circuit
Section alarm
If an alarm is present in the SDH section, the indicator will change from green to red. Clicking on the icon will
take the user to the SDH Section STATUS ALARMS page (see
figure 73
). A section alarm is activated if LOS
(loss of signal), LOF (loss of framing), or both are detected by the SDH interface.
Figure 73. SDH Section STATUS ALARMS window
Section LOS
The LOS alarm is activated when no transitions are detected on the incoming signal (before descrambling).
The LOS condition is detected upon observing 2.3 to 100 microseconds of no transitions. The LOS alarm is
cleared after a 125 microsecond interval (one frame) during which no LOS defect is detected.
SDH
Multiplexer
Regenerator
Regenerator
SDH
Multiplexer
Section
Section
Section
Section
Line
Line
Path
Add-Drop
Multiplexer
Содержание 6511RC
Страница 4: ...Summary Table of Contents Model 6511RC Matrix Switch Administrators Reference Guide 4...
Страница 8: ...Table of Contents Model 6511RC Matrix Switch Administrators Reference Guide 8...
Страница 12: ...Model 6511RC Matrix Switch Administrators Reference Guide 2...
Страница 16: ...About this guide Model 6511RC Matrix Switch Administrators Reference Guide 6...
Страница 20: ...1 Introduction Model 6511RC Matrix Switch Administrators Reference Guide 10 Saving HTTP HTML Object Changes...
Страница 38: ...4 Alarms Model 6511RC Matrix Switch Administrators Reference Guide 28 Alarms management windows...
Страница 80: ...8 IP 6511RC Matrix Switch Administrators Reference Guide 70 Address Translation Information window...
Страница 102: ...11 SNMP Model 6511RC Matrix Switch Administrators Reference Guide 92 SNMP window...
Страница 132: ...13 System Log Model 6511RC Matrix Switch Administrators Reference Guide 122 System Log Non Volatile Memory window...
Страница 142: ...14 E1 Link Model 6511RC Matrix Switch Administrators Reference Guide 132 SDH E1 test parameters...
Страница 158: ...15 SDH Model 6511RC Switch Matrix Administrators Reference Guide 148 SDH Configuration link...
Страница 159: ...149 Chapter 16 About Chapter contents Introduction 150 Patton Electronics Company contact information 150...
Страница 164: ...17 License Model 6511RC Matrix Switch Administrators Reference Guide 154 End User License Agreement...
Страница 165: ...155 Appendix A Updating the operating software Chapter contents Introduction 156 Software upgrade procedures 156...