Cisco WebEx Telepresence devices do not support the Multiway feature. Instead, each WebEx Telepresence device includes the personal bridge feature as part of the device subscription. All WebEx Telepresence devices also support the optional WebEx Telepresence bridge service, and some devices support the optional MultiSite feature (both sold separately).
For a description of the personal bridge feature, see WebEx Telepresence: Use your personal bridge. For a comparison between the MultiSIte feature and the WebEx Telepresence bridge feature, see Bridge: WebEx Telepresence bridge vs. MultiSite.