Guralp Systems CMG-DCM - Manual (Page 101)

Operator's guide
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the content of the file.
The Web interface does not check that the content of the files will be
understood. You should ensure that the file is valid before committing
any changes, referring to the Linux manual page for pppd(8) if you
are unsure.
When you have finished editing a file, clicking Save changes will
write the changes to disk. The changes will not take effect, however,
until the PPP services are restarted. You can restart all running PPP
services by clicking Restart PPP; whilst this occurs, the network will
be briefly unavailable.
options
The file /etc/ppp/options sets the default options for the PPP
daemon. These will be applied to all PPP connections and to any of the
serial ports which are running the
ppp service. The file is treated as a
list of words, each either an option or an argument to a previous
option. For a list of the available options, and a full explanation of the
format of the /etc/ppp/options file, see the Linux manual page for
pppd(8).
You can specify additional options for each serial port separately using
the serial.x.ppp configuration option, which can be found on the Serial
port configuration page for that port.
chap-secrets
The file /etc/ppp/chap-secrets contains secrets for pppd to use
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