Kemezung (Dumbo, Dumbu, Dzumbo, Kumaju) is a Southern Bantoid (Eastern Beboid) language of Cameroon. According to Ethnologue, it's 85% lexically similar to Bebe.
Kemezung has 19 "unmodified" consonants. Cox also claims Kemezung has labialized, palatalized, and prenasalized consonants but does not list all of them.
Kemezung has 9 phonemic vowels.
Kemezung also has 7 (or possibly 8) tones. There are three level tones (high, mid, and low), three falling tones (high-low, mid-low, and long mid-low), and one or two rising tones (low-mid and possibly mid-high).