ADTRAN L768 user manual HDSL/NEBEs, HDSL/FEBEs, WAN/L2 Protocol

Chapter 3: Terminal Menu Operation and Structure

HDSL/NEBEs

Read security: 5

This contains the number of Near-End-Block-Errors (NEBEs) that have been detected by the Express L768/L1.5’s HDSL circuitry. Continuous errors can indicate a line problem, but a burst at one time is normal.

HDSL/FEBEs

Read security: 5

This contains the number of Far-End-Block-Errors (FEBEs) that have been de- tected by the HDSL circuitry on the other end of the link. Continuous errors can indicate a line problem, but a burst at one time is normal.

WAN/L2 Protocol

Write security: 3, Read security: 5

This parameter specifies the layer 2 data link layer transport used. When se- lected as PPP (def), the Express L768/L1.5 will negotiate PPP over the HDSL interface. This would be used mainly for campus wiring applications. Param- eters for controlling the PPP negotiation are in the Configuration/PPP Profile menu. Frame Relay should be selected when the Express L768/L1.5 is con- nected to a Frame Relay switch. The Configuration/WAN/Frame Relay menu is used for controlling the Frame Relay parameters.

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