Have you talked to her about it in person, not just when you are on the phone and you don’t want to be? You need to bring this up when the two of you are snuggled up in bed together, you’ve just had wonderful intimate sex, you’re feeling totally in sync with each other and totally confident in each other and in the relationship. Then, in this cozy, safe atmosphere you say this:
"You know, it really worries me sometimes that I hurt your feelings when I want to get off the phone. You know I’d rather talk to you than anyone else in the world, and I hate the idea of you thinking I have any sort of problem with you or that I don’t like to talk to you–I do. I’m just weird about phones. I don’t know if it’s because I rely so much on body language to comunicate, or because the stupid thing hurts my ear, or what, but sometimes when we are talking on the phone my irritaiton at the stupid phone–not at you, babe, never at you–just builds up and takes over and I’m not even paying attention to you anymore, I’m just irrated by the damn phone. When that happens I try to get off the phone as quickly as possible before I end up taking all that irritaiton out on you. "
Second, whenever you do get off the phone with her, make definite arrangements about when you will talk to her again–this just takes a second: “I’ll see you tonight around 7, right?” or “Call me back at 6, ok?” or “What time are you coming over tonight?”. This will help with a lot of her anxiety–it’s a way of showing that you are looking forward to seeing her later.
Third, every once in a while, call her. Do it at a time when oyu only have a minute, and say you were just calliung to say Hi. Remember, you want her to accept that you hate the phone even if she dosen’t understand why you hate the phone. In the same way, you need to accept that phone contact is important to her even if you don’t understand why. A short “I just wanted to say hi” call every other day will establish this.
Last, don’t do the “we guys” thing: it doesn’t matter what “guys” like or how “guys” are wired: what matters is what you like, how you are wired. When you talk about what “guys” are like you sort of imply that it is something she should have already known, like you are chiding her for a breach in etiquitte. It’s ok to have your own preferences–whether or not you share them with other men is irrelevant and potentially distracting.