Exfo FTB-800 Series for FTB-1 Manuel d'utilisateur télécharger pdf (Page 301)

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Test Results

NetBlazer 291

Alarms/Errors

WIS

Note: Available under the WIS sub tab for 10G WAN interface only.

Alarms

 WIS Link Down

RX: At least one of the following errors is present: AIS-P, LOF, PLM-P,

SEF, LOP, or AIS-L.

 SEF (Severely Errored Framing)

RX: A minimum of four consecutive errored framing patterns.

TX: Generates more than four consecutive errored framing patterns.

 LOF (Loss Of Frame)

RX: A Severely Error Framing (SEF) defect on the incoming SONET

signal persists for at least 3 milliseconds.

TX: Generates a non-valid framing pattern.

 AIS-L (Alarm Indication Signal - Line)

RX: Bits 6, 7 and 8 of the K2 byte contain the “111" pattern in five

consecutive frames.

TX: Generates a “111” pattern for the bits 6, 7 and 8 of the K2 byte.

 RDI-L (Remote Defect Indication - Line)

RX: Bits 6, 7, and 8 of the K2 byte contain the “110" pattern in five

consecutive frames.

TX: Generates a “110” pattern for the bits 6, 7 and 8 of the K2 byte.

 AIS-P (Alarm Indication Signal - Path)

RX: The H1 and H2 bytes for a STS path contain an all-ones pattern in

three consecutive frames or more.

TX: Generates an all-ones pattern for H1 and H2 bytes.

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Exfo FTB-800 Series for FTB-1 Manuel d'utilisateur Page 301

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