So your broadband comes into your building to a router. It's that router that lets you on the Internet. If you have VOIP phones, they also need an internet connection to work.
𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "Hi there, I was told to reboot our router, but I don't know what that is?"
𝗠𝗲: "It will be a white box with Draytek on it."
𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "I found it!"
𝗠𝗲: "OK, on the back is a small black switch.........."
brrrrrrrrrrrrrrrrrrr
🤦‍♂️