At a minimum, you need equipment with a microphone, speaker, and stable internet connection to host or join a conference call. A camera is optional, but it’s needed if you’re joining a video conference.  Most people can use their smartphones and computers for conference calls, as these devices contain built-in cameras and microphones. But you can always get external hardware, like headsets or higher-quality cameras, to improve the conference call experience. If you’re joining conference calls in a traditional conference room with other people, you’ll also want to get a dedicated conference speakerphone for the center of the table.