There should be a “send to voicemail” option for telepathy.
@LoganFive Prof. X 💭: Thank you for thinking. I am unable to come to this plane of consciousness right now, but if you project mental imagery after the idea of the beep, I will get back to you when I am transcendent.

Logan 💭: Damn it, Chuck, pick up. I know you’re there.

Prof. X 💭: I’m really not, I—ahem, I mean, BEEP.