Comment by sjrd
And it's so convenient, too! No letter thus requires several syllables to be pronounced.
It's one thing I keep using from Belgian French despite having lived in Switzerland for over a decade, because it's objectively better.
(Swiss French has the objectively better names for 70-80-90, though. No quatre-vingt-dix BS like on France. :-p)
All the letters are one syllable, except w, which is three.
All the digits are one syllable, except 7 and 0, which are two.
I dislike these facts about them.