You don’t need extraordinarily fast internet.
WiFi is most commonly used for PC calls, though you can use alternatives like a hotspot or Ethernet to connect. The key to making clear calls on a laptop or computer is a stable internet connection. While the process to make calls from PCs can vary from app to app, most require you to follow three key steps: 1. When you sign up for one, calling clients and coworkers can be as simple as dialing a phone number or selecting someone from your contact list. Today, there are plenty of apps for people who want to connect from their PC to phone calls. Make calls from PCs with OpenPhone How to make a call from a PC
