"To join the conference" means to participate or be part of a gathering or meeting where people come together to discuss and exchange ideas or information typically through audio or video communication. Full definition
Additionally, you can call your contacts with audio, join conference calls, and call phone numbers abroad from the comfort of your living room couch! (mommyniri.com)
We asked you to join this conference because we needed the whole diversity thing but we never expected so many people to actually like your session so much! (sarahbessey.com)
Everyone joining our conferences should feel welcome and safe. (thenextweb.com)