switch through

switch (someone or something) through (to someone or something)

To connect or transfer someone's telephone call (to someone or something else). He's in a meeting right now, but I can switch you through to the board room if it's an emergency. Please hold—I'll switch your call through in a moment. They've been trying to switch us through to him, but he's not picking up.
See also: someone, switch, through
Farlex Dictionary of Idioms.

switch someone or something through

to connect someone or something with something else. I will switch you through the priority network. The operator switched the call through.
See also: switch, through
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • cover
  • grab (someone or something) by the throat
  • grab someone by the throat
  • grab someone/something by the throat
  • in (someone's) wheelhouse
  • in wheelhouse
  • wheelhouse
  • get someone's dander up, to
  • help (someone) along
  • help along