pub const F_RAMP_BASE64: &str = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2enw==";Expand description
Spec §4.2’s F-ramp in base64: the 160 bytes 0x00, 0x01, … 0x9F.
Also the first frame of the tone this peer speaks (tone_frame), so a bridge test can
correlate what reached the media path against a literal from the spec.