ADTRAN 1248 - Manual (Page 180)

Total Access 1248 Octal T1 IMA DSLAM with Modem Installation and Maintenance Practice
5-128 61179641AL4-5B
Usable Usable 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.
Active Active 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.
Near End Rx States
NotInGr Not In Group, Unassigned This condition indicates that no information about the
link exists.
Deleted Not In Group, Deleted 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.
Blocked Unusable, Blocked This condition allows for a graceful transition to
Unusable from the Active state without loss of ATM layer
cells.
Fault Unusable, Fault This condition indicates that a fault has been detected
either on the link or in the link protocol.
Usable Usable 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.
Active Active 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.
Far End Tx States
NotInGr Not In Group, Unassigned This condition indicates that no information about the
link exists.
Table 5-90. IMA Link Failure Monitoring Status Screen
States and Failure Conditions (Continued)
State Definition Failure Condition