Understanding and Troubleshooting SIP
4.4 (694 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
3,007 students enrolled

Understanding and Troubleshooting SIP

Be a SIP hero and help your company to thrive in the market
Bestseller
4.4 (694 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
3,007 students enrolled
Last updated 6/2020
English
Current price: $13.99 Original price: $19.99 Discount: 30% off
5 hours left at this price!
30-Day Money-Back Guarantee
This course includes
  • 6 hours on-demand video
  • 21 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
  • Assignments
  • Certificate of Completion
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What you'll learn
  • Troubleshoot SIP networks
  • Design SIP networks
  • Optimize SIP networks
Requirements
  • Computer Networks
  • Voice over IP
Description

Every single ITSP (Internet Telephony Service Provider) has a team of tech representatives. The performance of these professionals is essencial to reduce the churn and the stress of the operation. Other companies as well, such as Call Centers and PBX operators rely on SIP specialists to keep things running smoothly. Many companies also hire contractors to provide solutions and tech support. This training was created to improve the troubleshooting and design skills for these professionals.  

Content:

Section 1 - Introduction to SIP

  1. SIP devices and architecture
  2. SIP message components
  3. SIP methods
  4. SIP error messages
  5. The Registration Server
  6. Softphone Configuration
  7. Capturing SIP packets in Wireshark
  8. NAT Traversal
  9. STUN Demo
  10. TURN Demo

Section 2 - Handling and analyzing Media

  1. Media Encoding
  2. Session Description Protocol
  3. Real Time Protocol and Real Time Control Protocol

Section 3 - Advanced SIP, transactions, dialogs and routing

  1. SIP Transactions
  2. SIP Dialogs
  3. SIP Routing

Section 4- TroubleShooting

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



Who this course is for:
  • Support Analysts on Internet Telephony Service Providers (ITSPs)
  • Support Analysts on companies using IP PBXs
  • Technical Sales on ITSPs
  • IT consultants
Course content
Expand all 44 lectures 05:48:48
+ SIP Basics
13 lectures 01:37:15

The objective of this quiz is to help you to memorize concepts learned in the chapter.

Introduction to SIP
4 questions
SIP registration process
07:44
SIP registration demo
06:32
LAB 1 - Installing a SIP proxy
03:53
LAB 2 - Creating a domain and users for the training
02:15
LAB 3 - Softphones configuration
06:41
In this assignment you are going to unregister and register a phone. You will use sngrep to capture and analyze a registration process and answer the following questions. Alternative: If you don´t want to build your own Lab environment, use the file registration.pcap from the resources.
Capture a registration using sngrep
5 questions
Solution to Capture a registration using sngrep
05:20

This quiz will help you to memorize important concepts in registrations.

SIP registrations
5 questions
SIP Call Flow
11:14
SIP headers and body
09:30
SIP Headers and Body
3 questions

This video is a replacement for the old SIP Headers in Action

SIP Call Flow Demo
08:43
Capture a SIP call and answer the following questions. (Alternative) If you don't want to create the lab environment you may also use wireshark in your workstation. Dowload the call.pcap from the resources of the Call Flow Demo and ue it to answer the questions below.
Capture a SIP call
9 questions
Solution to the assignment "Capture a SIP call"
11:19
+ SIP Capture and Filtering
5 lectures 25:32
SIP capture introduction
03:26
DEMO context
04:13
NGREP DEMO
03:56
SNGREP DEMO
05:11
WIRESHARK DEMO
08:46
+ SIP Dialogs Transactions and Timers
2 lectures 23:15
SIP Transactions and Timers
13:32
SIP Dialogs
09:43
Load with wireshark or sngrep the file call_with_rtp and answer the following questions.
Transactions and Dialogs
10 questions
+ Media handling and voice quality
5 lectures 36:50
How the media is encoded
11:34
Bandwidth Calculator
03:23
Session Description Protocol
06:35
Real Time Protocol
05:27
Voice Quality
09:51
In this assignment you are going to analyze a call using Wireshark or SNGREP.
Find information in an SDP and RTP exchange
6 questions
+ SIP NAT TRAVERSAL
9 lectures 54:10
NAT Introduction
03:26
NAT Types
06:19
Manual configuration
05:31
Symmetric Response Routing - RFC3581
07:16
Application Layer Gateway
03:45
Comedia
05:04
STUN
06:18
TURN
11:23
NAT conclusion
05:08
+ TroubleShooting
4 lectures 51:32
Troubleshooting Methodology
08:43
Troubleshooting SIP Signaling
19:18
Troubleshooting Audio Problems
12:49
Troubleshooting Billing
10:42
+ Redundancy and Load Balancing using DNS
3 lectures 30:11
SIP Redundancy and Load Balancing using DNS
05:56
Redundancy Demo
21:26
Redundancy and Load Balancing Summary
02:49
+ Optional Lectures
2 lectures 22:30
SIP Methods
10:14
SIP Error Messages
12:16