Could is the DSC1800 KO?
The device is NOT new, but it comes after more experiments from a
university...
Is there a possibility to check, if the DSC1800 has a problem?
Did you do a full factory reset with a reset dongle ?
You can try the ipaccess-telnet utility (search the ml or the wiki for
details) and see what the console says (if anything).
Sylvain