ADTRAN Express L768 - Manual (Page 45)

Chapter 3. Terminal Menu Operation and Structure
61203192L1-20 Express L768 User Manual 3-11
HDSL/Channel Rate
Write security: 2; Read security: 5
Determines the rate at which data is transferred over the HDSL link.
Possible rates are 128K, 192K, 256K, 320K, 384K, 448K, 512K, 576K,
640K, 704K, 768K, and AUTO. AUTO is selected if the rate is to be de-
termined automatically.
HDSL/NEBEs
Read security: 5
This contains the number of Near-End-Block-Errors (NEBEs) that
have been detected by the Express L768’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 detected by the HDSL circuitry on the other end of the link. Con-
tinuous 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 selected as
PPP , the Express L768 will negotiate PPP over the
HDSL interface. This is used mainly for campus wiring applications.
Parameters for controlling the PPP negotiation are in the
Configura-
tion/PPP Profile menu. Frame Relay should be selected when the
Express L768 is connected to a Frame Relay switch. The Configura-
tion/WAN/Frame Relay menu is used for controlling the Frame Relay
parameters. When Auto Detect (def) is selected, the Express L768 will
look at the incoming packets in order to determine what layer 2 pro-
tocol to use.