Barry, I call at the same time every night. The kids schedule seems to change and I do not get any notice of the change. Generally the kids are bathed and ready for bed by the time I call but there are times when that isn't the case. I don't mind that so much but IMO if my kids need to go to bed 10 minutes past their bedtime so they can talk to their Dad a bit longer then it's well worth it.
All of that can be sorted out soon enough. Once I have 50/50 with my kids the phone stuff isn't nearly as critical.
Me-40,W-37 D7, D5, S3 Separated Oct 3/2013 T 11 YRS M 7 YRS