The steps
- 1Sign in to the Zoom web portal as an admin.
- 2Go to Phone System Management → Assets Library, click Add, then the Upload tab.
- 3Name the asset, set Category to “Music on hold / Music on park,” pick a language, upload your MP3 or WAV, set Visibility to Asset Library (Public), then Add.
- 4Assign it: Phone → Settings → Others → Hold Music → Edit → Choose from Asset Library. (Call queues have their own separate Music on Hold setting.)
Format gotcha
You can't upload straight from the Hold Music screen — the file has to exist in the Assets Library first. Files must be MP3 or WAV under 10 MB, and parked calls can't be customized.