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700-701-100-02
Monitor LTU Interface Screen
At the Monitor menu
describes the fields displayed in the Monitor LTU and Monitor NTU Interface screens.
Table 25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens
Field
Errored Seconds (ES)
24 Hour Count
Severely Errored Seconds (SES)
24 Hour Count
Unavailable Seconds (UAS)
24 Hour Count
CRC Errored Seconds
(Cumulative)
Bipolar Violation Seconds
(Cumulative)
Clear 24-Hour History
UTU-701 and ETU-751 List 1
(Figure
30), type
to display the Monitor LTU Interface screen
L
Figure 31. Monitor LTU Interface Screen
Description
The number of one-second intervals in which at least one bipolar violation (BPV) or one CRC-4
error was detected at the G.703 input port during the last 24hours.
The number of one second intervals during which a Loss of Signal (LOS), an Alarm Indication
Signal (AIS), or a Loss of Frame (or CRC-4 Multiframe) Alignment (LFA) occurred at the incoming
port.
The number of seconds that G.703 input signals were unavailable during the last 24 hours. After
ten consecutive SESs, the system is deemed unavailable, and the current UAS counter begins
counting from ten. After ten consecutive non-SESs, the system returns to availability, and the ten
counts representing the non-SESs are removed from the UAS counter.
The number of CRC-4 errors that were detected at the G.703 port since error counters were last
cleared. Turning CRC-4 mode on (ENA) and off (DIS) clears the CRC-4 error counter.
The number of seconds in which bipolar violations were detected at the G.703 port since error
counters were last cleared.
The date and time that the 24-hour histories were last cleared are displayed here. Enable this
function by pressing
L
action must be confirmed by pressing
G.703 Port
or
ENTER
to clear all 24-hour history counters (including HDSL). This
Y
.
August 9, 2002
Viewing Status
(Figure
31).
Table 25
49
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