To turn off the ringer on your Mac, you have several effective methods depending on whether you want to mute all sounds or just disable call notifications:

Mute All Sounds (Including Ringer)

• Click the volume icon in the menu bar at the top right and drag the volume slider all the way to the left to mute all sounds

• Alternatively, press the F10 key on your keyboard to instantly mute all sounds and alerts; press it again to unmute

• You can also go to Apple menu > System Settings > Sound, then either drag the Output volume slider to zero or check the Mute box to silence all audio

Turn Off Ringer for Phone Calls (FaceTime)

• If your Mac rings for incoming calls via FaceTime or calls relayed from your iPhone, you can disable this by:
  • Going to Apple menu > System Settings > Notifications > FaceTime.
  • Toggle off Allow Notifications or disable Play sound for notification to stop the ringer for FaceTime calls

• On your iPhone, you can also disable "Calls on Other Devices" to prevent calls from ringing on your Mac

Use Do Not Disturb (Focus) Mode

• Open Control Center from the menu bar.
• Select Focus > Do Not Disturb to silence all notifications and incoming calls temporarily without muting other sounds like music or videos

• You can configure Do Not Disturb to allow calls from specific people or apps if needed

Adjust Alert Volume Separately

• In System Settings > Sound, you can adjust the Alert volume slider independently from the main output volume to reduce or mute alert sounds while keeping other audio active

Notes

• If you use external speakers or headphones, you may need to mute or adjust volume directly on those devices, as macOS may not control their volume

• Muting volume or enabling Do Not Disturb is often the quickest way to silence your Mac during meetings or quiet environments

These options let you customize how and when your Mac rings or makes alert sounds, helping you avoid interruptions while maintaining control over other audio