My H never calls the kids on my nights. He was out of town last weekend and called zero times. My kids don't seem to care, though.
I only occasionally call when they are with H, but (for now) he only has them two nights a week, and rarely consecutively.
I imagine once we are D, it will be closer to 50/50, and I will expect that I can speak with my kids on the phone each night that I don't have them. I can't imagine H will want to speak to them more on my nights when he will have them himself more nights then, but who knows.
me: 44 XH: 42 M 11 years D10 and S8 Bomb drop 9/27/13 D final 7/1/14