The facts remain that the DGN1000 clearly supports telnet, and that without a telnet client your test suggestion would fail. Given the non-techie nature of the OP, that would be construed as the DGN1000 not supporting telnet.
Stop wriggling

. Rather than quibble with me, why not try harder to help the OP?
My broadband basic info/help site - www.robertos.me.uk |
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"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.