| Configuring Content Sharing | 149Procedure1. On your web user interface, go to Security > Experimental Access.2. Configure and save the following settings:Parameter Description Configuration MethodExperimental Access It is configurable only after theexperimental access is enabled.Note: the default value is Off. It takes 5consecutive confirmations to activate theexperimental access feature.Web user interfaceAuto Framing After enabled, the VC200 canautomatically adjust the camera accordingto the number of participants and theirpositions, and output all participants'images. The panorama is output when noperson is detected in the initial state or inthe camera angle.Note: the default value is Off. It isconfigurable only when the experimentalaccess feature is enabled.Web user interfaceConfiguring Content SharingContent sharing is to send a secondary stream through a dual-stream protocol or a mix sending method,so that the remote party can share your local content presentation. If the far site does not support the dual-stream protocol, you can select the Mix Sending feature to mix the video and content, and then send themto the far site in one stream.By default, the PC presentation is enabled on the system when the content is sharing. If you do not wantthe system to automatically start a PC presentation, you can disable it. You can configure the mode, theframe rate and the resolution for the shared content.For more information, refer to Yealink Meeting Server User Guide.• Configuring Dual-Stream Protocol• Configuring Mix-Sending• Configure Content SharingConfiguring Dual-Stream ProtocolThe dual-stream protocol allows the video and PC content to be transmitted to the far site simultaneously,thus meeting the requirements of different conference scenarios, such as training or medical consultation.Based on this protocol, the participants can share contents while having a video call.The Yealink video conferencing system supports the standard H.239 protocol and BFCP (Binary FloorControl Protocol). The Yealink Cloud account and YMS account support dual-stream protocol by default. Ifyou want to share contents during the call using the SIP protocol and H.323 protocol, you need to enablethe H.239 protocol and BFCP in advance.• Configuring the H.239 Protocol• Configuring BFCP (Binary Floor Control dual Protocol)