Hey! Yeah, we want it to work in all languages. In practice though, English is going to do better. Unfortunately - I'm the one who actually built the feature, and I only speak English, so that's kinda hard to test 🤷‍♂️ So the expected voicemail length is a parameter you can tune. We don't really have solid opinions on what it should be - 20 seconds is probably close to right, but we really value the opinion of people in the discord who've actually used it. It controls the length of time at the start of the call that Gemini listens in order to make a prediction about whether we got sent to voicemail or not. In theory, that lets you control the tradeoff between worse predictions (shorter durations) and higher costs (longer audio samples sent to gemini). In practice - Gemini is insanely cheap, and so we'd encourage people to tend to pick longer durations