How will I know if I missed a call? Can an inmate leave a message?
If you have caller ID, you will see a missed call listed, but it most likely will only show an "Unavailable" or "Unknown" call. He can not leave a message on voicemail or an answering machine either, but often, the machines will pick up a portion of the recording at the beginning of the call.
I use PCO. When I miss a call, my voice mail picks up. I save each and every message because he will say things like "Have a nice day" or "I have something important to tell you" when he's supposed to say his name.