In SIP-based multipoint video conferences, the Binary Floor Control Protocol (BFCP) is used to manage the sharing of presentation content. BFCP is a signaling protocol that controls which participant has the "floor," or the right to transmit a media stream, such as a presentation or screen share, to the other participants. While the actual presentation media is encapsulated and transported using RTP (Real-time Transport Protocol), BFCP is the specific protocol responsible for arbitrating and controlling access to this shared resource, ensuring that only one participant sends the presentation at a time.

1. Huawei Certified ICT Associate - Video Conference V4.0 Training Material. (Internal Huawei Documentation). The official courseware for the H11-861 V4.0 exam details the protocol stacks used in video conferencing. In the module covering SIP-based conferencing

it specifies BFCP as the protocol for presentation and data sharing control. (e.g.

HCIA-Video Conference V4.0 Training Material

Chapter 3: Video Conferencing Protocols

Section: SIP Protocol Family).

2. IETF RFC 4582: Binary Floor Control Protocol (BFCP). This is the primary standards document defining the protocol.

Section 1

Introduction: "This document specifies the Binary Floor Control Protocol (BFCP). BFCP is a protocol for coordinating access to shared resources in a conference... Another example is the right to send video in a video conference

where the conference policy only allows a single participant to send video at a time." This directly establishes BFCP's role in managing presentation streams.

3. Schulzrinne

H.

& Wolisz

A. (Eds.). (2010). Protocols and Architectures for Next-Generation Networks. John Wiley & Sons.

Chapter 10: Voice and Video over IP

Section 10.5.3: Conferencing: This academic text discusses protocols for multimedia conferencing

explaining that "For floor control in SIP-based conferences

the IETF has standardized the Binary Floor Control Protocol (BFCP) [RFC4582]." This confirms its use in the context described.