Learn Russian: talking on the telephone

We learn russian phrase and words on topic "talking on the telephone" in this lesson.
Russian vocabulary. For example: Сan I speak to Masha? Whos calling? Its Alla here. Who is that?
Who shall I say is calling? Ill see if shes in. Can you call back later? Could you tell him that Alla called. Please hold and Ill put you through.You must have the wrong number.Theres no-one of that name here.Can I check the number ? I must have dialled
the wrong number.