Either Phone Mode or Computer Mode need to be selected in your audio settings to connect you to the audio conference.

• If you're using the desktop app, open the Options pane > Audio tabfrom your Control Panel to change your settings. See Switch Audio Modes in Session for more details.
• If you're using a mobile app, open the Audio settings (either under the Audio tab or Settings tab).
• If you're using the Web App, select the Setting icon in the toolbar and check the Audio tab.

If this doesn't resolve your issue, see Why can't I hear anyone?.