360 Zhihui Cloud Developer

Apr 3, 2026 · Fundamentals

Mastering SIP, SDP, RTP, and BFCP: A Deep Dive into VoIP Call Setup and Screen Sharing

This article provides a comprehensive technical overview of SIP signaling, SDP negotiation, RTP/RTCP media transport, and the Binary Floor Control Protocol (BFCP), including their interactions, message flows, deployment models, and practical screen‑sharing implementations for video‑conference systems.