Ringtone
Ringtone means a phonorecord of a partial musical work distributed as a digital phonorecord delivery in a format to be made resident on a telecommunications device for use to announce the reception of an incoming telephone call or other communication or message or to alert the receiver to the fact that there is a communication or message.
Source
37 CFR § 385.2
Scoping language
For purposes of this subpart, the following definitions apply: