I have been on call in places that were so noisy that the only place that was halfway quiet where I could answer a page and call a patient were the public restrooms. Examples: any type of sports or school event. stadiums. theaters. restaurants. Usually, I either go outside or into the restroom. Many places, like stadiums, don't allow one to go ourside, and then come back inside. Now, I am not using the toilet, but, I am in the entry area. Sorry if it offends anybody's sensibilities, but, otherwise, I would need to stay home and do nothing for the weekends I am on call.
One time, a patient was upset because I was at home starting a load of laundry while they were talking to me. Actually, it doesn't take that much of my brain capacity to do the wash. I can talk on the phone and start the washer at the same time. If I could train patients not to call at mealtime, I wouldn't answer the phone mid-bite, either.