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4. Configuration Options
9700-A2-GB20-20 December 2002 4-27
Configuring ATM for the Network Interface (9783, 9788)
Select ATM from the Network menu to display or change ATM option settings (see
Table 4-12, Network ATM Options).
Main Menu Configuration Network ATM
Table 4-12. Network ATM Options
Cell Payload Scrambling
Possible Settings: Enable, Disable
Default Setting:
–
9783 – If DSLAM Type is set to Paradyne:
Enable
–
9783 – If DSLAM Type is set to a non-Paradyne DSLAM:
Disable
–
9788:
Enable
Specifies whether the 48-byte information field of ATM cells is scrambled/descrambled per
ANSI T1.646 on this ATM link.
NOTE: For the 9783 CSU/DSU, the default setting is changed based upon the DSLAM
Type setting. See
DSLAM Type (9783)
on page 4-4 for more information.
Enable – Activates scrambling/descrambling of transmitted or received ATM cells.
Disable – No scrambling/descrambling is performed.
Cell Delineation Error Event Threshold
Possible Settings: 1 – 1000
Default Setting: 10
Specifies the number of OCD (Out of Cell Delineation) events that must occur in a
one-minute interval for an LCD (Loss of Cell Delineation) alarm to be declared.
1 – 1000 – Specifies the LCD alarm threshold.
FRF.8 Encapsulation Mode
Possible Settings: Translational, Transparent
Default Setting: Transparent
Specifies the type of FRF.8 upper-layer protocol encapsulation used on the link for each
pair of interoperable Frame Relay and ATM PVCs.
Translational – Encapsulated data is translated (RFC 1490 to RFC 1483). FrameSaver
multiplexing and SLV communications are not supported in this mode.
Transparent – Encapsulated data is forwarded without being translated.
ILMI
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies the state of the Integrated Local Management Interface (ILMI). ILMI can be used
in support of hybrid management, allowing access to the endpoint from a DSL provider’s
Network Operation Center using the same management PVC that is used to manage the
DSLAM.
Enable – The ILMI channel is enabled. SNMP traffic, embedded in the ATM cells, is
supported.
Disable – The ILMI channel is disabled.