Hello Nat and welcome:)
Depending on how complete your profile is, a phone call can be very short or a tiny bit longer if a specific detail (for me it would be a role play for example) is involved. Bear in mind that a phone call for an Outcall will always be longer (different screening).
Your guts were right. Plus as you're a newbie you'll have dozens of time wasters jump on you.
I don't clock my phone calls but I don't think they last longer than 2-3 minutes. That's because I'll cut it short right at the beginning (and block) with whoever I feel does not match my screening criteria. So I only engage into conversation with men who sound ok at the beginning of the conversation.
I expect the conversation to be short, friendly and to the point.
I don't "introduce" myself. That's because I already did all that in details on my profile. I took my time to put my services, rates, age, height, size etc. And my screening is about making sure that the man I talk to knows who I am, what I look like, what I offer and how much I charge. I'm not interested in seeing someone who calls me and needs me to tell them that nope, I'm not brunette, I'm blonde.
Basically when I pick up I expect to hear a greeting and my name.
Most men tell me they got my number off xxx website. And ask how my day is going. I keep it short but very nice.
Next I expect them to ask me if I am available on such and such day, such and such time. I check this and ask them if there's anything they would like to doublecheck with me while we are on the phone.
This is when I like to hear that they checked my services, would just like to confirm such or such service (say DFK) or my rate. Or could I wear red lingerie instead of black. Or they tell me which of my role plays they like.
All this being sorted out we agree on day and time. I then explain to them where I'm based and talk them through my confirmation procedure.
Thank you and hang up.
I follow this with a text, post code to my landmark and reminder by when I need them to confirm the booking.
Most guys will reply with a polite thank you.
A guy who suddenly starts texting every 5 minutes gets cancelled.
A guy who suddenly starts texting with questions or requests gets cancelled as well: he had every chance to ask his questions when we were on the phone.
A guy who suddenly wants more pictures or any crazy stuff just gets blocked.
All this takes a lot of practice. And the best way to practice is pick up your phone, even if you train on time wasters which is frustrating then at least you are clearly good at spotting them ! Xx