dial up

/D AY1 AH0 L AH0 P/
verb
  1. 1

    To telephone, to call on the telephone.

  2. 2

    To connect a computer to a modem.

  3. 3

    To increase the level (of something) by turning a dial, or (figuratively) as if by turning a dial.

    โ€œThese comments are guaranteed to dial up the animosity.โ€

Source: https://en.wiktionary.org/wiki/dial%20up