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greater number of positions (TCPAM64, TCPAM128) are preferable.
When a linear encoding is entered for a bitrate which is outside the
permissible bitrate range, a message appears informing about encodings
recommended for this specific bitrate.
3.3.4. Adjusting the auxiliary DSL parameters.
The commands
plesio, plesio-ref, sync
are used to set up the
mode of synchronizing modems.
In case the communication route is formed of modems Sg-17B<->Sg-17B,
the mode of synchronization «
sync»
is recommended. Otherwise, modes
«
plesio»
or «
plesio-ref»
are preferable, the choice being determined
for each specific communication line empirically.
For a DSL line, it is possible to set the level of signal power backoff in
decibels (dB), by use of the command
pbo-forced
with the parameter
<val>
where
<val>
is the level of power backoff within the range 0 to 30.
The command
pbo-normal
is used to establish the automatic mode of
signal power backoff in the communication line.
All the above commands can be either used separately or united
into a single line, for example:
> master annexA tcpam128 rate 14080 sync pbo-normal
3.3.5. Review of the current configuration of the SHDSL interface
The command
cfg
can be used to review the current configuration of the
modem.
> cfg
Current configuration:
master Annex A TCPAM128 sync rate=15296 pbo-normal
>
