EXFO FTB-8510B Guia Del Usuario página 936

DSn Tabs
FDL RX
Bit-Oriented Messages
The Bit-Oriented Messages are priority messages send over the Data-Link.
These messages are mostly used for networking operation and
maintenance. A Bit-Oriented Message consists of 8 consecutive 1s
followed by a byte starting and ending by zeros.
Priority
Note: See Priority on page 281 for the list of possible Priority codeword
messages.
Current indicates the priority message detected in the last second. If
no priority message has been detected, "--" is displayed.
Previous indicates the last priority message detected excluding the
current message. If no priority message has been detected since the
beginning of the test, "--" is displayed.
Command/Response
Note: See Command/Response on page 282 for the list of possible
Command/Response codeword messages.
Current indicates the command/response message detected in the
last second. If no priority message has been detected, "--" is displayed.
Previous indicates the last command/response message detected
excluding the current message. If no command/response message has
been detected since the beginning of the test, "--" is displayed.
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