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•
FPSW Settings
: What the front panel switches are set to (if the unit is
populated with them).
•
Configuration Mode
: Whether the 3088 is configured by DIP switches
or software.
•
DSL Link State
: In Progress, Success, Deactivated, or Idle.
•
DSL Sync State
: Out of Sync, Acquiring Sync, In Sync, or Losing
Sync.
Note DSL Link State vs. DSL Sync State
—The DSL link state
describes whether the DSL is training (in progress), linked (suc-
cess), deactivated (we don’t have an option to deactivate the
modem, so the user should not see this), or idle.
The DSL sync state describes whether no sync words have
been found (out of sync), there are no sync word errors (in
sync), or whether we are transitioning from out of sync to in sync
(acquiring sync) or vice versa (losing sync). Typically, when the
link is training, the sync state goes from out of sync to acquiring
sync to in sync.
•
DSL Actual Rate
: The actual rate at which the DSL link is running
(minus DSL overhead).
•
DSL Line Condition
: Good or Poor.
•
Noise Margin Ratio
: the maximum tolerable increase in external
noise power that still allows for BER of less than 1x 10–
7
.
•
DSL Error Counters
: The following error counters are available:
– CRC
– LOSW (Loss of Sync Word)
– TX FIFO Full
– TX FIFO Empty
– TX FIFO Slip
– TX Stuff
– RX FIFO Full
– RX FIFO Empty
– RX FIFO Slip