No, it is not necessary for all of your participants to join via video in order to access your conference. If some of your participants don't have a webcam or don't have access to a computer with Internet, they can still join your conference.

Those joining your conference from their computer can access the call in exactly the same way. The only difference will be that there will be no video available for that participant. Download the 'Participant Guide' here for more details.

Callers using their phone can call in with your regular Dial-In Number and Access Code. Their full number will be visible to moderators only. All other participants will only see part of their number (excluding the last 4 digits) on their tile via your dashboard.