I would go to another room, especially if my daughter was watching tv or something. I would tell her that she had to be quiet or momma would have to work outside the home! That usually worked.
This is your opportunity to pick and choose what you want to do and how you do it. You still need to be professional, but if you can't take calls at anytime, you have to make that known to your clients. I know I don't want to hear kids screaming in the background, so I wouldn't let my girls do it.
My youngest starts school this year

, but I'm also going to be outside the home working during those hours. So, I'll be back to working around the girls schedules again.