MaxTester DSL Test Results
32
³
Interleave Depth
defines the number of bits (or bytes) in each block of
data.
³
Bitswap
specifies the status of the bit swapping mechanism - Active, Not
Active or Unknown - swapping bits from tone m to tone n to prevent
modem retraining.
³
Trellis
or Trellis Coded Modulation (TCM) is a type of convolutional code
which utilizes parity bits on each symbol within a continuous data stream.
When the line is connected, Trellis displays either
On
or
Off
.
³
Phy-R
is Broadcom proprietary Physical Layer Retransmit technology which
is used to overcome impulse noise.
DSL Statistics
The
DSL Statistics
tab allows you to view transfer mode statistics and DSL counters.
³
DSL Counters
lists the
Local
and
Remote
results for
the following counters:
³
CRC
is the cyclical redundancy check
Interleaved/Fast counter.
³
FEC
is the Reed Solomon forward error
correction.
³
FEC Seconds
is the number of seconds when FEC
is detected.
³
Error Seconds
is the number of seconds when
code violation is detected.
³
HEC
is the header error check (HEC)
Interleaved/Fast counter. Available only in ATM
connection mode.
³
Parameter - Received/Transmitted
³
Bytes
records the number of active (non-idle) PTM/ATM cells or frames on
a channel.
³
Packets
displays the number of packets.
³
Transport Type
options include PTM (packet transfer mode) and ATM
(asynchronous transfer mode).
³
Sync Loss Count
is the number of times the unit lost synchronization.
³
PTMCRC
is the number of CRC (cyclical redundancy check) errors of the PTM.
³
PTMCV
is the number of CV (code violation) errors of the PTM.
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