Verilink DCSU 2911 (880-502647-001) Product Manual - Manual (Page 58)

DCSU 2911 E1 Craft Interface
4-12 Verilink DCSU 2911 User Manual
Figure 4-8 DCSU 2911 Performance/Status Menu
Counter Submenu From the Performance/Status Menu, the Counter Menu is
displayed by typing the command C.
Figure 4-9 DCSU 2911 Counter Menu
This menu displays counts for the following:
• FE—Frame Bit Error: An error in the received framing bit
pattern counts and the number of whole seconds in which a
framing bit error has occurred.
• CRC—Cyclic Redundancy Check: An error-checking algorithm
performed on data transmissions. On a frame-by-frame basis,
a numerical value is derived from the data in the bit stream at
one end of transmission. When each frame reaches the receive
end, the cyclic redundancy check is calculated again and
compared with the value generated by the transmit-side data.
Discrepancies usually indicate one or more transmission
errors.
• FEBE—Far End Block Errors: Counts the CRC errors reported by
the far-end node.
• HDB3V—High Density Bipolar (order of 3) Violation indicates
an HDB3 line decoding error.
Choose Rn (where n is the port number) to reset the counters. This
command will return the values of the FE, CRC, FEBE, and HDB3V
counters to zero.
-- DUAL CSU 2911 PERFORMANCE/STATUS MENU --
PORT 1 PORT 2 PORT 3 PORT 4
LOS NO YES YES YES
LOF NO YES YES YES
AIS Rx/Tx NO/NO NO/NO NO/NO NO/NO
RAI Rx/Tx NO/NO NO/YES NO/YES NO/YES
SLIP NO NO NO NO
CRC4 NO NO NO NO
BER NO NO NO NO
RMAS NO YES YES YES
C) display counters P) display performance data
T) threshold status X) exit this screen
[1,1] DUAL CSU 2911 >
-- DCSU 2911 COUNTER MENU --
FE CRC FEBE HDB3V
PORT 1 0 0 0 0
PORT 2 0 0 451 0
PORT 3 0 0 209 0
PORT 4 0 0 50 0
Rn) Reset counters X) exit this screen
[1,1] DCSU 2911 >