The same softphone as iOS and Android, on your desk. Sign in with the provisioning link your admin sent you.
Apple Silicon. Unsigned build -- right-click the app and choose Open the first time.
Download for MacUnsigned installer -- Windows SmartScreen may warn on first run, choose More info > Run anyway.
Download for WindowsDeploying to a fleet of Windows machines? Download the MSI for IT/GPO installs instead of the regular installer.