It varies between couples, I talk with my husband who is away all week most days, but not every day and I wouldn't panic if he didn't call for a day, nor he if I didn't call him. We don't do the every night everyone say night night to daddy as it seemed to cause more upset than simply getting on with things in the week, then looking forward to seeing daddy on Friday night. I speak to him later in the evening, often on Skype, but perhaps twice a week for a proper chat, the rest of the time, it's hi and bye.
If he's in Europe, I like a phone call to say he's at the airport (as I worry he's missed the plane), a phone call once he's landed, and then after that it might b daily or even every few days.
I don't feel uncared for if he doesn't call, and I call him when I want to speak, it's more about how we are feeling at the time than a set routine.
But that's us as a couple, you may prefer the regularity of it.
However, if he's working all day and schmoozing in the evenings, surely a phone call for you to chat about the day isn't that convenient.
Or perhaps I'd just rather he get on with his job when he's there and focus on me when he's here. As I do myself.
I would just text him 'is now a good time for a chat?' and call more yourself. I think waiting for him and feeling rejected when he's at a work function is not a nice way to spend your evenings.