SIP protocol in VoIP Training in London

SIP protocol in VoIP Training in London, United Kingdom

Participants will explore the structure, operations, and functionalities of SIP in real-world VoIP applications.

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SIP protocol in VoIP Training is a professional training program delivered by ProgNXT in London, United Kingdom. ProgNXT, a globally recognized corporate training provider in 55+ countries, offers this SIP protocol in VoIP Training course with hands-on, instructor-led sessions. This course provides an in-depth understanding of the Session Initiation Protocol (SIP), which is the backbone signaling protocol for managing voice,...

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Designed and delivered by the ProgNXT Cyber Security Expert Panel — a vetted team of industry professionals with 17+ years of hands-on experience in ethical hacking, penetration testing, Kali Linux, and network security

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Course Code: BRO81
21 Hrs
Last Updated: April 2026

Course Rating5/5

This course provides an in-depth understanding of the Session Initiation Protocol (SIP), which is the backbone signaling protocol for managing voice, video, and messaging sessions in VoIP networks. Participants will explore the structure, operations, and functionalities of SIP in real-world VoIP applications. The course includes theoretical explanations, call flow scenarios, and hands-on labs using SIP tools and analyzers.

Welcome to the official SIP protocol in VoIP Training certification program in London, United Kingdom. This comprehensive training is designed to elevate your professional skills and provide you with practical, industry-relevant knowledge locally. As a globally recognized corporate training provider operating in 55+ countries, ProgNXT ensures that our curriculum meets the highest standards of excellence.

Whether you are looking to upskill your team or advance your personal career, our expert-led sessions will guide you through the core concepts of this domain. Upon successful completion of the 21 Hrs program, participants will receive a globally accepted certification, demonstrating their proficiency and readiness to tackle complex challenges in the field.

Basic understanding of networking concepts (TCP/IP, DNS)
Familiarity with telecommunication systems or VoIP is helpful
No prior SIP experience is required

Participants will be able to:

Understand the role of SIP in VoIP and multimedia communication
Analyze and design SIP messages and call flows
Configure and troubleshoot SIP endpoints and proxies
Understand SIP interoperability with other protocols (RTP, SDP)
Capture and interpret SIP messages using tools like Wireshark
Apply SIP knowledge in designing or maintaining VoIP infrastructure

Protocol-level understanding of SIP and SDP
VoIP signaling and call flow analysis
Hands-on experience with SIP softphones and SIP servers
Troubleshooting and debugging SIP call issues
Familiarity with SIP proxies, B2BUA, and registration processes

SIP message types and header analysis
SIP call flow construction (INVITE, REGISTER, BYE, etc.)
Call setup, teardown, and mid-session modification
SIP with NAT, firewall traversal, and troubleshooting scenarios
Security aspects: SIP over TLS, authentication mechanisms
Practical packet capture and analysis

Participants who complete the training and actively engage in exercises will receive a ProgNXT Certificate of Completion.

Course Agenda

Introduction to VoIP and SIP

VoIP Overview and Architecture
SIP's role in VoIP vs. H.323/MGCP
Components: User Agents, Proxy, Registrar, Redirect Servers

SIP Protocol Essentials

SIP Methods (INVITE, ACK, BYE, CANCEL, OPTIONS, REGISTER)
SIP Message structure (Request/Response, Headers, Body)
SIP URI and Addressing

SIP Call Flows

Registration flow
Basic call setup and teardown
Call forwarding and transfer
Forking and redirection

SDP and Media Negotiation

Understanding SDP in SIP
Codec negotiation
Media stream handling with RTP
SIP and QoS overview

SIP Tools and Lab Work

Wireshark SIP filtering and packet analysis
Using softphones (Zoiper, X-Lite)
Setting up and testing calls with Asterisk or FreeSWITCH
Scripting test calls with SIPp

SIP in NAT and Firewall Environments

SIP NAT traversal problems
STUN, TURN, ICE protocols
SIP ALG issues

SIP Security

Authentication and authorization
TLS and SIP encryption
SRTP and secure media
Common vulnerabilities and countermeasures

Troubleshooting and Real-World Scenarios

SIP call trace analysis
Common errors (4xx, 5xx, 6xx responses)
Debugging registration and media issues
End-to-end scenario diagnosis

Hands-on Exercises

Course presentation slides
Sample SIP call flow diagrams
Access to lab setup with SIP clients and servers
Practice lab exercises and scenario-based challenges

Quizzes
Hands-on labs and exercises
Troubleshooting scenarios
ProgNXT Certificate of Completion will be awarded to participants who successfully complete the course and assessments.

SIP protocol in VoIP Training Events in london

Online Events

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More Upcoming Session Dates

November 2026

🌐 Online Instructor-Led

1st Nov 2026→3rd Nov 2026

📍 London, United Kingdom

2nd Nov 2026→4th Nov 2026

🌐 Online Instructor-Led

19th Nov 2026→21st Nov 2026

📍 London, United Kingdom

23rd Nov 2026→25th Nov 2026

December 2026

🌐 Online Instructor-Led

10th Dec 2026→12th Dec 2026

📍 London, United Kingdom

11th Dec 2026→13th Dec 2026

🌐 Online Instructor-Led

24th Dec 2026→26th Dec 2026

📍 London, United Kingdom

28th Dec 2026→30th Dec 2026

Events for other courses in London, United Kingdom

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SIP protocol in VoIP Training in London