Linux IMS / SIP / SDP Training

Linux Networking & Security Essentials cover the fundamentals of managing network connectivity and protecting systems. This includes IP addressing, DNS, routing, firewalls, and common network tools. Security essentials involve user permissions, SSH access, and system hardening practices. Together, they help ensure secure, stable, and well-connected Linux environments.

Introduction to SIP & SDP explains the core protocols used in real-time communication systems. SIP (Session Initiation Protocol) is used to initiate, manage, and terminate voice or video calls. SDP (Session Description Protocol) defines media details such as codecs, ports, and formats. Together, they enable call setup and media negotiation in VoIP and multimedia applications.

IMS Architecture & Call Flows describe the framework used to deliver IP-based multimedia services. IMS architecture consists of core components like CSCF, HSS, and application servers that manage signaling and authentication. Call flows explain how SIP messages move between these components during call setup, modification, and termination. This ensures standardized, secure, and scalable communication services.

VoIP Troubleshooting with Wireshark involves analyzing network packets to diagnose voice and call-quality issues. Wireshark captures SIP signaling and RTP media streams to identify problems like call drops, latency, jitter, or packet loss. It helps trace call flows, codec negotiation, and network errors. This makes it an essential tool for resolving VoIP performance and connectivity issues efficiently.

High Availability Clustering (Pacemaker/Corosync) ensures critical services remain online during failures. Corosync handles cluster communication and node membership, while Pacemaker manages resources and failover. If a node goes down, services automatically move to a healthy node. This setup minimizes downtime and improves system reliability.