The following table describes what action the browser takes if you join a Lifesize meeting through the join url, https://call.lifesizecloud.com/extension.
Lifesize desktop app launcher
The Lifesize desktop app launcher automatically detects if you have the Lifesize desktop app installed. If the app is installed, the meeting automatically opens in the desktop app. If the desktop app is not yet installed, you will be prompted to download and install the desktop app.