ADC ETU-751C - Manual (Page 59)

700-701-100-02 Viewing Status
UTU-701 and ETU-751 List 1 August 9, 2002 49
Monitor LTU Interface Screen
At the Monitor menu ( Figure 30 ), type to display the Monitor LTU Interface screen ( Figure 31 ). Table 25
describes the fields displayed in the Monitor LTU and Monitor NTU Interface screens.
Figure 31. Monitor LTU Interface Screen
Table 25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens
Field Description
G.703 Port
Errored Seconds (ES)
24 Hour Count 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.
Severely Errored Seconds (SES)
24 Hour Count 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.
Unavailable Seconds (UAS)
24 Hour Count 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.
CRC Errored Seconds
(Cumulative) 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.
Bipolar Violation Seconds
(Cumulative) The number of seconds in which bipolar violations were detected at the G.703 port since error
counters were last cleared.
Clear 24-Hour History The date and time that the 24-hour histories were last cleared are displayed here. Enable this
function by pressing
or to clear all 24-hour history counters (including HDSL). This
action must be confirmed by pressing .
L
L ENTER
Y