It looks like the beep is sufficient for recording from a one-party state calling a two-party state, since federal law supercedes the other state's law. Actual

It looks like the beep is sufficient for recording from a one-party state calling a two-party state, since federal law supercedes the other state's law. Actual consent would be required if the recorder is in a two-party state, even if the other party is in a one-party state. But even if the recording is "technically legal" without consent, using it as evidence in the two-party state could still be problematic. So I guess it wouldn't be a good idea to rely on the beep alone.