Phone manner

[onepiece]

Hi guys,

I have a few questions about phone manner.
1)
How do you say "you" on the phone? Can we use あなた or is there any polite word to use?
I heard something like おたく.

1a) How to ask name on the phone.
example: May I know who is on the line, please?

2) Can we say はじめまして　on the phone?

Thank you.

[Jessi]

1) To say "you" politely on the phone, you could use そちらさま.

2) To ask who's calling, you could say どちらさまですか.

3) Yes!

I hope that helps!!