Skype launched in 2003 and became the default way many people made free video calls online, so its incoming ringtone was heard in homes, offices and classrooms for years. As clips, streams and memes moved to other platforms, creators kept using the sound as shorthand for an incoming call, often comparing it to the newer discord call tone that younger audiences know better. The ring survived Skype's decline because it is instantly readable without any visual cue or explanation needed.