“Cham is a Brahmi-derived script used by the Austronesian language Cham, spoken in the southern part of Vietnam and in Cambodia. It does not use a virama. Instead, the encoding makes use of medial consonant signs and explicitly encoded final consonants.
Cham is a Austronesian language of the Malayo-Polynesian family. The Cham language has two major dialects: Eastern Cham and Western Cham. Eastern Cham speakers live primarily in the southern part of Vietnam and number about 73,000. Western Cham is spoken mostly in Cambodia, with about 220,000 speakers there and about 25,000 in Vietnam. The Cham script is used more by the Eastern Cham community“ - The Unicode Consortium, The Unicode Standard, Version 15.0.