Which feature provides users the ability to join Webex meetings directly from a call interface?

The feature that allows users to join Webex meetings directly from a call interface is Webex Meetings integration. This integration facilitates a seamless experience for users by allowing them to access and participate in meetings without needing to navigate away from their current call interface.

With Webex Meetings integration, users can initiate or join meetings directly from their phone or calling application, enhancing productivity and reducing the friction that may come from switching between different applications. This streamlined process encourages greater use of Webex meetings, as users can easily connect to their scheduled meetings while remaining in an environment they are already familiar with for calls.

Conversely, the other options do not provide the same functionality. Call forwarding is a feature that redirects calls to another number, voicemail access pertains to managing voicemail messages, and audio conferencing typically relates to phone-based audio connections for conference calls, none of which enable the capability to join meetings directly from the call interface like Webex Meetings integration does.