ADC ETU-751C User Manual
Page 57
700-701-100-02
Viewing
Status
UTU-701 and ETU-751 List 1
August 9, 2002
47
describes the fields displayed on the Main console screen.
Table 24.
Fields Displayed in Main Console Screen
Field
Description
Circuit Configuration
G.703
Indicates the interface standard for G.703 data port.
n TS
Indicates the number of time slots (n) mapped to the G.703 interface.
Timing
Indicates the primary source the unit uses for clock synchronization:
EXT
External 2.048 MHz clock.
G.703
G.703 port receive clock.
Application mode
Indicates that the Single Pair (SINGLE) application mode is in effect.
Performance
MAR1
Displays the Margin value for each HDSL interface or displays link status (SIG, ACQ, etc.) if the link
is not up.
MAR2
Reserved
ES1
Displays the Errored Seconds (ES) counts for each HDSL interface. The counts are for the latest
24-hour period, calculated as the sum of the counts in the previous 95 15-minute intervals, plus
the count in the current 15-minute interval.
ES2
Reserved
Alarms
The Alarms field displays a list of all active alarms at each LTU/NTU and HDSL interface.
Possible LTU/NTU Interface Alarms
Loss of Signal (LOS)
Loss of signal at the G.703 input.
Loss of Frame Alignment (LFA) Loss of frame alignment at the G.703 input.
Receive Alarm Indication
Signal (AIS)
Alarm indication signal (unframed all ones) received at the G.703 input.
Remote Alarm Indication
Signal (RAI)
Remote alarm indication signal received at the G.703 input (through A-bit).
Loss of Clock (LOC)
Applies to loss of external clock when EXT timing is used. The external clock was lost for the
previous second. This alarm is reset when the clock is active again.
Possible HDSL alarms
Margin (MAR)
Margin has fallen below threshold set for the HDSL interface.
Errored Seconds (ES)
Errored seconds count has exceeded threshold set for the HDSL interface.
Loss of Sync Word (LOSW)
Loss of sync word at the HDSL interface. Remains active during restart, but not a cold start.