EdgeAccess
®
Universal Chassis System
2346 T3 Modem
3-12
Monitor Modem Performance
You can monitor the performance of both the local and remote modems at the Link Errors report.
The report includes timers and checks for signal errors. In addition, the 2346 uses the Bit Error Rate
Test (BERT), which sends a continuous 127-bit sequence within the optical data stream to check for
bit errors while the optical signal remains in sync. The link Errors screen monitors these conditions:
•
Timer: Number of days, hours, minutes, and seconds since the last reset
•
Composite LOS Errors (CLS): Number of optical loss of signal errors
•
Electrical LOS Errors: Number of electrical loss of signal errors
•
Errored Seconds (BPVs): Number of seconds with at least one BiPolar Violation (BPV)
•
SQL Rx Errors: Number of received squelch occurrences
•
BERT Sync Status: Reports loss if CLS occurs or OK if signal is good
•
BERT Sync Count: Number of good to faulty patterns
•
BERT Bit Errors: Number of bits with errors in the received pattern
•
BERT BER (1E-9): Number of bit errors during this BERT up time
•
BERT Up Time: How long BERT is available and running
To view the modem performance, follow these steps:
1. At the Main Menu, type
4
, "Link Error Counters," and press <Enter>.
2. At the Link Error Counters screen, press <Tab> to reset all counters, press <Tab>.
3. To return to the Main Menu, press <Esc>.
