Is there an echo in here?

ME: Okay, and what's your router plugged into?
CALLER: Uh, my home computer
ME: Ah, is that the only thing it's plugged into?
CALLER: Um, it's plugged into the.. uh...
ME: Modem?
CALLER: ... uh... the...
ME: Modem?
CALLER: ...Modem? Modem.