The
RxPr The
Sack The
RL The
RxTr The
Wt1s The
IdleP The
Off The
cTest Pattern Idle (default) Options: Idle or Sending
To send a pattern, press the ‘c’ key and press <spacebar> to send the test pattern. The “OK” message indicates the received test pattern is
Idle Indicates that
Sending Indicates that
dError Insertion Off (default) Options: On, Off
You may inject intentional errors into the test pattern by turning Error Insertion ON. The Error (ERR) LED will blink once per second.
eSelected Pattern
Options: QRSS, 511, or 2047
Use this option to select the test pattern used to test the link.
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NI STATUS
The Network interface (NI) status is shown in the middle of the Diagnostics/Statistics screen. The brackets are empty when the link is operating normally. In this example, various two or
Excessive zeros [EXZ], i.e., lack of pulses, detected. This condition may occur if the unit is not connected to the network, in which case the EXZ is displayed continuously. If EXZ comes on intermittently, there may be a frame, line code or data rate mismatch between the near and
Receiver Carrier Loss [RCL] occurs when 192 consecutive zeros have been detected at the network interface. RCL clears when a pulse is detected.
Frame Bit Error [FE] occurs when there is an error in the framing bit sequence. This may happen due to a disconnected line, mismatched framing formats or severe errors in the data stream. This error may indicate a noisy line or cable condition. This error may indicate a noisy line or cable connection if the frames appear to be set correctly.
Severe Frame Error [SE] occurs when the framing error exceeds a certain threshold of errors. This may happen due to a disconnected line, an extremely noisy connection, or mismatched framing.
Loss of Sync [LOS] occurs when the T1 framer in the unit cannot synchronize itself to the received data stream. This may happen due to a disconnected line.
Out of Frame [OOF] occurs when no valid frame structure can be found. This may happen due to a disconnected line or mismatched framing or mismatched framing.
Alarm Indication Signal [AIS] indicates that the remote unit or the central office is sending a Blue Alarm, because it is not receiving a sig- nal; the alarm is an unframed
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