User guide

4-6 Encore Multi-port DSU/CSU User GuideÑJuly, 1997
4
Table 4-5 DATA DTE Status
Parameter Setting Description
Alarm Input
Status
Normal or 20-
character user-
deÞned
description
DefaultÑNormal. NormalÑSelect Normal
Error Free
Seconds
0 to 100% Gives the percentage of seconds that are error free.
CRC Errors
(Cyclic
Redundancy
Check)
ESF Mode An error checking scheme used to check the received
data. The CRC bits within the framing are calculated
using the contents of the frame. The calculation is
performed again when the frame is received and the
CRC values are compared. If they do not match, the
frame is considered bad and the CRC statistic is
incremented.
Bipolar
Violations
An error checking scheme. This violation occurs when
the ones bit is not represented with the opposite signal
of the previous ones bit.
Out Of Frame
Events
ESF Mode An error checking scheme. An OOF occurs when two
out of four consecutive framing bits are in error.
Seconds in
Current 15
Minute
Gives the number of seconds that have occurred since
in the current 15 minute interval. To reset to the
beginning of the interval, press C.