get on the phone

get on the phone

1. To begin talking to someone on the telephone. The boss just got on the phone, but I can tell her you stopped by. Holly gets on the phone with her boyfriend as soon as she comes home from school every day—it's so annoying.
2. To ask someone else to speak to the caller or join in on the current phone conversation. In this usage, a noun or pronoun is used between "get" and "on." Get Ryan on the phone—he's the only one that can sort out this mess. OK, well, this irate customer is demanding that I get the CEO on the phone.
See also: get, on, phone
Farlex Dictionary of Idioms.

get on(to) the (tele)phone

 and get on(to) the (telephone) extension
to pick up a telephone receiver to talk to someone or make a telephone call. I'll get onto the extension and talk with Fred. I'll get on the phone and call Fran right away.
See also: get, on, phone
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • telephone
  • be on the phone
  • be on the telephone/phone
  • on the phone
  • be a great one for (doing something)
  • be a great one for something/for doing something
  • call (one) on (something)
  • call on
  • mail (something) to (one)
  • mail to