ɪz nˈaɪnti fˈaɪv vˈɛɹɪəbəl ɹˈeɪt vˈɔɪs kˈoʊdɚz ɹᵻdˈuːs ðə ɹˈeɪt bˌiːɪŋ tɹænsmˈɪɾᵻd wɛn spˈiːkɚɹ ɪz nˌɑːt tˈɔːkɪŋ, wˌɪtʃ ɐlˈaʊz ðə tʃˈænəl təbi pˈækt mˈoːɹ ɪfˈɪʃəntli.
IS-95's variable rate voice coders reduce the rate being transmitted when speaker is not talking, which allows the channel to be packed more efficiently.