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Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice
Table 5-90. IMA Link Failure Monitoring Status Screen
State
Definition
Usable
Usable
Active
Active
Near End Rx States
NotInGr
Not In Group, Unassigned
Deleted
Not In Group, Deleted
Blocked
Unusable, Blocked
Fault
Unusable, Fault
Usable
Usable
Active
Active
Far End Tx States
NotInGr
Not In Group, Unassigned
5-128
States and Failure Conditions (Continued)
Failure Condition
This condition indicates that the link is ready to be used
and is awaiting the FE to activate its receiver before
sending any ATM layer cells.
IMA frames containing only filler cells are being
transmitted; but the link is not in a data round-robin
state.
This condition indicates that the link is capable of
passing cells from the ATM layer.
The IMA transmitter considers the link to be in a data
round-robin state.
This condition indicates that no information about the
link exists.
This condition indicates that the link has been removed
from the group.
This transitional state ensures that the other end is still
not receiving ATM layer cells before it moves to the
Unassigned state.
This condition allows for a graceful transition to
Unusable from the Active state without loss of ATM layer
cells.
This condition indicates that a fault has been detected
either on the link or in the link protocol.
This condition indicates that the link is ready to be used
for receiving ATM layer cells and it is awaiting the FE Tx
to be Usable or Active before moving into the Active
state.
The link has been synchronized with the other receive
links already in the Usable or Active state.
The IMA receiver considers the link to not be in a data
round-robin state.
This condition indicates that the link is capable of
passing cells to the ATM layer.
The IMA receiver considers this link to be in a data
round-robin state.
This condition indicates that no information about the
link exists.
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