OK, Yea.
the photo looks like an indian ring neck though. and Indian ringnecks are more common in pet stores than african ring necks are..
Unless you see them side by side for a size comparison, African Ringnecks and Indian Ringnecks look almost identical when they're young.
@Kiwikiwi welcome to the forums!!! And congratulations on your new family member

As he ages you'll be able to tell easily whether he's an ARN or IRN - it doesn't matter as far as how to take care of him, but their size is a bit different and their normal vocalizations are different so for my parrot it has been helpful to know.
My African Ringneck was in a pet store until he was 9 months old - he was purchased by a family that felt their lifestyle was too stressful for him, so I got him from a rescue when he was 18 months old.
I fell in love with him right away and now I adore the species so much!! From what I know, ARN in general are more docile than IRN as pets, and that's definitely true for mine - I can't imagine a scenario where he would bite.
Whether your little guy is alarm calling or contact calling, you can try answering back each time with just a friendly "hello!" or "we're right here and you're safe" type of response.
I agree that having his cage in the same room as you is helpful. It can take several weeks or even longer for many ringnecks to be comfortable in a new home.
With mine, I put a little metal bowl on the inside of his cage door, and every time I walked past his cage I dropped a little piece of walnut in the bowl. I also just sat near his cage and read out loud (I read lots of threads here out loud to him! The Amazon forum in particular has some great sticky threads that apply to lots of parrots) so he'd get used to my voice.
My hunch is that he's still anxious at the move, and as he gets more comfortable he'll start using a bigger variety of sounds.
Again, congratulations and feel free to ask lots of questions - I've had Cotton home for 10 months now and he still isn't hand "tame", but he's my favorite and I could just sit and watch him all day long!