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4.5.2.1
E1 Input
The following alarms are displayed under E1 Input if the system is operated
as ETI switch. Next to the LEDs you can see the number of the occured alarms.
– Signal: No 2-Mbit/s signal is received.
– G.704 Sync: No 2-Mbit/s framing can be found. This alarm is only sig-
nalled if „G.704-NA" has been selected as ETI format.
– AIS (Alarm Indication Signal): Two or less „0" are received within the last
two frames. This alarm is only signalled if „G.704-NA" has been selected
as ETI format.
– NA TIST: The NA TIST is not continuous.This alarm is only signalled if
„G.704-NA" has been selected as ETI format.
– Local D Alarm (Local Deferred Alarm): The local error bit rate is higher
than 10e
anymore. This alarm is only signalled if „G.704-NA" has been selected as
ETI format.
– Local N Alarm (Local Nondeferred Alarm): The local error bit rate is
higher than 10e
alarm usually occurs, when the system is switched on and when the line
interface is connected. The alarm should not last longer than four minutes.
This alarm is only signalled if „G.704-NA" has been selected as ETI format.
– C Reed Solomon: Errors have been corrected by the Reed Solomon
code.This alarm is only signalled if „G.704-NA" has been selected as ETI
format.
– F Reed Solomon: Errors couldn't be corrected by the Reed Solomon
code (Failure). This alarm is only signalled if „G.704-NA" has been se-
lected as ETI format.
4.5.2.2
ETI
Directly below the ETI bar it is displayed if and when a reconfiguration is
pending.
In the next line the name of the Ensemble is shown followed by the detected
Format.
Additionally, the following alarms and status messages are displayed. Next
to the LEDs you can see the number of the occured alarms.
– ETI Framing: This alarm occurs if the ETI frame cannot be found.
– Error Level 0: This LED indicates that the Error Level is 0.
– Error Level 1: This LED indicates that the Error Level is 1.
– Error Level 2: This LED indicates that the Error Level is 2.
– Error Level 3: This LED indicates that the Error Level is 3.
– Header CRC: This alarm is set if the CRC header is faulty.
. If this alarm occurs, the 2-Mbit/s signal cannot be decoded
-03
. This corresponds to one bit error in four minutes. This
-06
W i n d o w s
P C
S o f t w a r e
P A G E 2 7
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