User manual

CHAPTER
7
9Diagnostics & Troubleshooting
In this Chapter
 LED Test and Status Indicators ... 7-2
 Determining Performance and Status ... 7-7
 General Troubleshooting ... 7-9
 Thermal Shut-Down ... 7-10
 Self-Tests ... 7-11
 Looptests Using Built-in PRBS BERT ... 7-15
 Testing Low-Speed Interface Operation ... 7-18
 Testing DS3 Interfaces ... 7-32
 Testing DS3 Redundancy ... 7-39