👉 SIP (Session Initiation Protocol) engineering is a specialized field focused on the design, implementation, and optimization of SIP-based communication systems, particularly for voice, video, and messaging services over IP networks. It involves configuring and managing SIP gateways, routers, and firewalls to ensure seamless call setup, maintenance, and teardown, as well as handling complex interactions like call forwarding, session migration, and multimedia streaming. Engineers also address challenges such as network latency, packet loss, and security (e.g., encryption and authentication) to maintain reliable, high-quality voice and data services. By tailoring SIP protocols to specific use cases—like VoIP, video conferencing, or hybrid systems—SIP engineering bridges the gap between traditional telephony and modern IP-based communication, enabling scalable, flexible, and efficient network infrastructures.