Alright, I may kill one of your puppies right here, okay?
Calling her back is NOT AFC. It's all in HOW you call her back. Make sure you're using game techniques while on the phone, keep the conversation casual (show you're not nervous) and make sure it's going in whichever direction you're steering it (show you're in control), if you get the opportunity, try and take the conversation to a slightly sexual place (show that you want her). Be careful that you don't take the conversation on the phone any further than you'd be willing to take it in person, otherwise you might come off as inconsistent and that'll confuse her and Gods do you not want to confuse a woman.

Now, not acting interested and asking to meet as friends, that may seem a little off to her. Especially asking to meet just as friends. You may inadvertently friend-zone yourself.

Sending mixed signals is in the same boat as escalating the conversation on the phone. You have to be careful. The 'mixed signals' you'll want to be sending are the 'I think you're sexy' and the 'I'm not needy' signals. These don't need to be mixed, you can desire someone without needing them. It's hard to do, but it can be done. Again, sending mixed signals is NOT a good idea. They make you seem inconsistent, fake and confusing, not something you want to show.

Now as for your relationship options, it's perfectly fine to not want to get committed right away. Your options here are MLTRs, Casual dating, Open Relationships or FWB. Each one of these has it's own downfalls and restrictions. Which one are you thinking of?

Cinnamon