The latter. I actually do use a ringtone composed of three SAME headers and the attention signal; specifically, I use that ringtone for PagerDuty. It reliably

The latter. I actually do use a ringtone composed of three SAME headers and the attention signal; specifically, I use that ringtone for PagerDuty. It reliably raises me from the dead in the correct state of mind to respond to an alert, and also reliably turns heads when it goes off while I'm out and about. But I don't need to worry that the FCC's gonna come after me about it, as long as I don't have my phone plugged into a radio station when it goes off. That said, if I were doing a radio interview or something, I'd be sure to turn off my phone or at least remove PagerDuty's ability to override the silent switch.