May I call in or on?

I don't sense that either one is correct as it stands.
What is the complete sentence in a complete context?

CJ

I am confused as to which phrase is correct if you call a person to give a talk.....May I call in or call on Mr.________ for the Welcome address.

AnonymousI am confused as to which phrase is correct if you call a person to give a talk.....May I call in or call on Mr.______ for the Welcome address.

Then, you don't need to use any preposition at all.

What is the right phrase when you call a person. May i call in or may i call on mr blank? Kindly answer if you know. Thanks!

Anonymousthe right phrase when you call a person.

You just used it. 'to call a person' (by phone).

Mr. Smith called you and left a message. Please call him back. (No 'in' or 'on'.)

If the teacher asks a question and students raise their hands to offer an answer, the teacher "calls on" Tom, or "calls on" Linda, o

Which is correct: May i call IN Mr. Doe for the welcome remarks
Or
May i call ON Mr. Doe....

AnonymousMay i call ON Mr. Doe....

May I call on Mr. Doe to present the award. (speaking to an audience)

CJ

May I call on Mr. Smith as the next speaker" is correct only if the speaker is asking permission from someone else. If the speaker is a chairman or other recognized leader of a meeting, the speaker should simply say, "I call on Mr.

Call on is correct.

Call in is only to be used in very specific cases, e.g. you are in a different room or building from the person you are calling.

anonymous Hi what is really really right to say..May I call in or may I call on?
Thanks