SIP Training for Professionals (Understanding and Troubleshooting SIP)

Practical SIP labs and a FREE SIP server. Former Understanding and Troubleshooting SIP

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SIP Training for Professionals

I have created this training for technical people working on Communication Service Providers and Contact Centers and VoIP Developers. The main bennefit for students is to improve job performance nd get better opportunites in the industry. For company owners this training can improve the quality of the technical support, retention of technical people and customer satisfaction.

This SIP course was updated in 04/2021 and includes:

  • 6+ hours on-demand video
  • 8 articles
  • 19 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
  • Labs
  • Certificate of completion

The SIP training was created for the IT staff of mobile/telecom providers, ITSPs (Internet Telephony Service Providers), Consultants, Call Centers or any other company using IP telephony. The performance of these professionals is essential to reduce the churn and the stress of the operation. SIP troubleshooting is a key skill in these scenarios.

It is a result of years in the frontline of the tech support of a softs-switch developer, troubleshooting hundreds of deployments.

I have prepared two FREE gifts for this training. The first is a Virtual Machine in open virtualization format with a SIP server running as a Proxy, B2BUA and Redirect. The second is a list of SIP responses with comments on how to troubleshoot the most common SIP error messages. I sincerely hope you enjoy this training.

There are 5 practical labs to do with your VM and softphones in this training.


SIP Training / Section 1 - Introduction to SIP

  1. Why is SIP relevant
  2. Introduction to SIP
  3. Complete SIP Proxy free download
  4. SIP Registration Process and Demo
  5. Capturing SIP Packets with wireshark and sngreo
  6. Assignment: Analyzing a SIP registration
  7. Session Setup and Management
  8. SIP trapezoid and ladder
  9. Server Architectures
  10. SIP headers and Body
  11. SIP Call Flow Demo
  12. Assignment: Analyze a SIP Call

SIP Training / Section 2 - SIP Capturing and Filtering

  1. SIP Capture Introduction
  2. Demo context
  3. Demo ngrep
  4. Demo sngrep
  5. Demo wireshark

SIP Training / Section 3 - SIP Dialogs, Transactions and Timers

  1. SIP Transactions and Timers
  2. SIP Dialogs
  3. Assignment: Transactions and Dialogs

SIP Training / Section 4 - Handling and analyzing Media

  1. Media Encoding
  2. Session Description Protocol
  3. Real Time Protocol and Real Time Control Protocol
  4. Voice Quality
  5. Assignment 4: Analyzing Session Description Protocol

SIP Training / Section 5 - Nat Traversal

  1. NAT Introduction
  2. NAT Types
  3. Manual Configuration
  4. Symmetric Response Routing RFC3581
  5. Application Layer Gateway
  7. STUN
  8. TURN
  9. NAT Conclusion

SIP Training / Section 6- Troubleshooting

  1. Troubleshooting Methodology
  2. Handling Signaling Issues
  3. Handling Media Issues
  4. Handling Billing Issues

SIP Training / Section 7 - Redundancy and Load Balancing using DNS

  1. SIP Load Balancing and Redundancy using DNS
  2. Redundancy Demo
  3. Redundancy and Load Balancing Summary

SIP Training / Section 8 - Labs

  1. Installing a SIP Proxy
  2. Preparing the environment
  3. Creating domains and users
  4. Download and configure softphones
  5. Capturing a SIP registration
  6. Capturing a SIP Call

Your Instructor

Flavio E. Goncalves
Flavio E. Goncalves

My name is Flavio E. Goncalves, I have been an Engineer since 1988. As any engineer we are in the world to build things. My personal mission is to have a positive impact in the life of other people and companies.

22+ years of experience in Voice over IP systems, 10000+ students on Udemy

He started as a Network and Database Administrator in 1989 and in the technical carrier got the following certificates

  • Novell Master CNE in 1993
  • Microsoft Certified Systems Engineer in 1995
  • Cisco CCNP, CCDP, CCSP and CCIE written
  • Asterisk dCAP in 2006
  • OpenSIPS Instructor and creator of the OpenSIPS Bootcamp and OpenSIPS Certified Professional

He has founded four companies:

  • V.Office, Network Systems Integrator, Since 1996
  • SipPulse, Communication Systems, Since 2010
  • Api4Com, APIs for communication, Since 2018
  • WeHostVoIP, Hosting VoIP Application, Since 2020

In the VoIP School the objective is to build a community of people related to VoIP, Instructors and Students in the same place. With the teachable interface, the teaching model can be a lot better. We hope to offer more web-conference training and coaching.

Course Curriculum

  Section 9: Optional Lectures
Available in days
days after you enroll
  Bonus Section
Available in days
days after you enroll

Frequently Asked Questions

When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.
Is there a time limit to finish the course?
The course will be available permanently, you don't have a time limit to finish.
Is there a certificate or exam for the course?
After completing the course a certificate will be automatically generated. For now, there is no exam. However an exam is being built for the future.

Get started now!