Who is on the line?

Who is on the line?

Who is on the other end of the telephone? A: "Who was that on the line, John?" B: "Oh, it was just some solicitor trying to sell me life insurance." A: "Who's on the line, Mommy?" B: "It's Mommy's doctor, so it's very important that I hear what she's trying to say."
See also: on, who
Farlex Dictionary of Idioms.
See also:
  • Who is on the phone?
  • Who's on the phone?
  • hold an eel by the tail
  • extension
  • get on the (phone) extension
  • on the telephone
  • get onto the phone
  • solicitor
  • strike (one) from the roll (of solicitors/attorneys)
  • strike someone off the rolls