The Foundations of SIP

Learn the fundamentals of SIP to advance your VoIP career.

4.48 (1667 reviews)

Udemy

platform

English

language

Network & Security

What you will learn

Pass SIP related questions in a job interview

Troubleshoot SIP issues

Explain how calls flow in a SIP network

Why take this course?

SIP is the standard in Voice Over IP communications. Large telecom carriers are switching away from their legacy platforms into highly scalable next generation SIP networks. Even cellular phones are migrating to Voice Over LTE, which also relies on the SIP protocol.

By taking this course you will learn the fundamentals of the SIP protocol. Knowledge of SIP has enabled me to land secure positions with world wide telecommunication companies. Are you ready for the same opportunities?

In this course you will learn:

What is SIP and the RFCs that it is defined in.
The different types of SIP clients and servers
The structure of SIP messages
Overview of SIP response codes
The structure of the SIP URI
Overview of SIP headers and their purpose
How the Session Description Protocol (SDP) works
How SIP allows mobility through call forking, REFER requests and Diversions
The details of SIP transactions and Dialogs
How SIP proxies route requests (We discuss stateful and sateless proxies)
The SIP Trapezoid model
How SIP Registration works.
How SIP Authentication works. We dive into how the MD5 hash is created.
What challenges SIP faces with NAT and how to overcome them.
An overview of the Real Time Protocol - AKA RTP

This course is created for:

IT Generalists wanting to learn a specialized skill.
Technical support staff working for a VOIP provider
Service Delivery staff that deploys VOIP networks for customers.
Voice Engineers that want to increase their knowledge on SIP.
Central Office Engineers that need to learn SIP while they transition away from circuit switched networks.
Sales Engineers that want to close more deals.

About the Instructor :

Keith Croxford has been involved in VOIP and networking technologies for over 14 years. He has received accolades from VOIP industry experts. Here are a few examples :

"Keith is one of those rare engineering breeds that is exceptional in knowledge and communicating that knowledge. It is a great team player and has assisted in resolving hard issues that no one else can fix. Keith is intelligent, detailed, self disciplined, works well with others, and great at documentation. When it comes to voice engineering, there has never been a better one." - CTO

"Keith is the Swiss Army of knife of VOIP and Data networking technologies with a healthy dose of great Programming skills and Customer Experience management. It is very tough to find a Jack of All Trades and a Master of a Few and Keith is one of them. I've interacted with him in deeply technical and business related circumstances and he hits the ball out of the park in both. His work ethic is second to none. He also demonstrates a very high entrepreneur mindset." - Director of Service Delivery

Start Learning Now!

This same material is presented in live conferences that cost $400 per seat to attend. Through Udemy you are able to receive this course at an incredible value.

Click on "Take this course" and start learning now.

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Reviews

José

March 30, 2024

I think it is excessive to go through all the response codes one by one, sections 10,11 and 12 could be summarise in 1 minute.

Walfrido

February 16, 2024

I suppose for a non-beginner learning SIP, this is ideal. Nonetheless, I felt the content was well presented, and in at least one chapter it explained in excellent detail about some of the challenges we actually encounter in my own work day, and also explained how to solve those challenges!

Sham

February 12, 2024

Very easy to follow and great explanations. I'd prefer more examples instead of reading slides verbatim. Inserting mini multiple choice quizzes between sections would greatly improve course learning as there is little to no student engagement in the current course structure. Move Section 10 to the beginning of course instead of the end. Overall, I found this course valuable.

Dan

February 7, 2024

The content of the course is useful and informative. The presentation leaves something to be desired. Multiple typos in the slides and some generally broken ordering of concepts (authentication with or without QoP has functions are backwards in the slides) causes note taking frustration as you go through the course. Also, the appendix at the end should be a beginning lesson and it is even presented in a manner that indicates it would normally be at the beginning.

Jason

October 20, 2023

A lot of good info. Could have used some more practical examples and less reading directly from the RFC, but overall was very informative. Will be useful for me going forward.

Anthony

August 28, 2023

Section 10 should be up in chapter 1 or direct new students to check out Section 10 from the start. Would of been more helpful.

Andron

August 24, 2023

The instructor makes learning these concepts fun. He really breaks sip down and the architecture. I already had experience with sip but purchased this course to just go more in-depth knowledge.

Yannick

August 17, 2023

I recently completed a course on SIP basics, and I'm truly impressed. The course's simplified approach made SIP's intricate concepts understandable, even for those new to technical jargon. The instructors' use of relatable examples aided comprehension, while the well-structured modules facilitated smooth learning progression. The practical demonstrations effectively illustrated SIP's real-world application. Inclusion of supplementary resources added immense value. Overall, this course exceeded my expectations, rendering complex SIP principles accessible. If you seek a solid foundation in SIP, I highly recommend this course.

Santanu

May 21, 2023

As a beginner this course is very useful as the trainer gives good analogy to explain the concept. This Course is also great for a memory refresher. The Language is easy to understand and very beautifully designed so as not to include very difficult concept in the beginning.

Michael

May 18, 2023

Out of all the other courses I have taken these examples/presentations have been the most clear to understand.

Sérgio

January 30, 2023

This is a course that teaches many basics of VOIP. However the course is practically reading power points. For me, it should have idealized explanations that can be practiced in the working world to show the situations mentioned (in some cases there were, but not in the more complex ones). In my opinion, section 10 should be at the beginning of the course.

Jude

January 30, 2023

Easy to understand. Animations are fun. Course it presented with enthusiasm. Would give 10 stars if I could,

Bachar

January 22, 2023

I expect a definition of SIP with more details like real example before go deep into SIP messages...there are a lot of sip videos on YouTube can explain more usefully…thank you

Fabian

January 12, 2023

I agree with many of the other students that it would be very valuable if more examples are added and explained in deep, for example a basic call from a UAC to a UAS, then putting the call on hold, making a REFER and so on.

Eric

December 29, 2022

This course is great!! The way that the information is simplified is great and easy to understand!!!! Great Teacher, Great way to teach!!!!

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