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Configuring and Monitoring through the LCD
4-14 Campus-REX RS Interface Card User Manual
HDSL Margin
You can view the current HDSL loop margin values, measured in dB, for the
local and remote HDSL loop. The listed values represent the margin relative
to a signal-to-noise ratio required for a Bit Error Rate (BER) of 10
-7
. A margin
value greater than zero indicates a performance of better than 10
-7
. The
system provides a minimum margin of 6 dB, which translates to a
performance of 10
-10
BER or better.
To view the HDSL margin:
1 Press Escape until CAMPUS RS I/F: REX displays.
2 Press Next. HDSL LINK CONFIG & STATUS displays then
press Enter.
3 Press Next until MARGIN displays.
Port Statistics
You can view the following statistics for the Ethernet and HDSL ports:
• number of frames correctly received (IN)
• number of frames correctly transmitted (OUT)
• number of frames dropped due to an overflow of the input or output
buffer on the port (DSCRD)
• number of frames received in error from both the input and output
buffers, such as CRC errors, alignment errors, and dribbling hit errors
(ERR)
To view the port statistics:
1 Press Escape until CAMPUS RS I/F: REX displays.
2 Press Next four times. DIAGNOSTICS displays.
3 Press Enter. LOOPBACK MODE displays.
4 Press Next two times. REX STATISTICS displays.
5 Press Enter. ETHERNET PORT FRAMES displays.
CAD1069i5.book Page 14 Thursday, May 30, 2002 7:32 AM