For over 25 years had to answer the phone/return messages promptly at work. This led to starting earlier than most so could get some actual work done. Was always "on call" for emergency's, but it was rare.
Am retired, have a phone that plugs into the wall. Had to give up the rotary, but still have it. All my friends/family/doctors know to let the phone ring at least 15-20 times. This is the secret pass code to get me to answer. Am not one to jump right up when the phone rings, but this takes practice, patience and attitude. If you answer a robo call right away, it seems the robo calls instantly multiply. Also do not have a messaging system. This leads to less time on the phone, and if they need to get hold of me send email.
Used to be if you waited through the automatic messaging system, they gave you option if not using push buttons. That went away, and the rotary got shelved.
People say well we get you on your carry phone, and are dismayed/non-believing when it is explained ain't got one.