Starcall was an Australasian label owned and used by RCA, and later BMG after it bought RCA, for TV advertised product, indicating different terms to retailers and a different marketing team to the normal RCA / BMG staff. It existed from Aug. 1975 onwards but the label no longer seems active.
Sometimes a new catalogue number in the STAR or SCXX series was used (for Starcall generated compilations), and at other times the label simply used the existing RCA / BMG catalogue number and added an SFL prefix.