Network Intelligence Research Center (NIRC)

Jun 1, 2025 · Fundamentals

5G New Calls: SIP Protocol Explained and Hands‑On Implementation

This article introduces the SIP (Session Initiation Protocol) as the flexible signaling backbone for 5G voice and video services, explains its place in the OSI model, details message structure and common methods, outlines real‑world use cases, and provides step‑by‑step setup and code examples using eXosip and pjsip.