Dusner is highly endangered, and has been reported to have just three remaining speakers.

[4][5] The project outputs were a vocabulary, a published grammar,[2] and a website documenting the language.

The phoneme inventory of Dusner consists of five vowels and 19 consonants (five of which are only attested in loanwords from Indonesian/Papuan Malay).

[2] (Phonemes in parentheses in the table are only attested in loanwords from Papuan Malay) There is no tone in the language.

The phonology of the language has a high number of complex syllable onsets, some of them contravening the Sonority Sequencing Principle.