General SIP Overview
  • What is SIP and where is it used?
  • What is SIP?
SIP Clients and Server
  • What is the difference between a SIP Client and SIP Server?
SIP Messages
  • What does a SIP message look like?
  • Let's look at the SIP INVITE
  • Wireshark review - Examine a SIP message
  • What is a SIP response code?
  • 1XX Response Codes
  • 2xx - 3xx Response Codes
  • Wireshark Review - Examine a 2xx response
  • 200 OK Capture quiz
  • 4xx Response Codes
  • 5xx Response Codes
  • 6xx Response Codes
  • What is a SIP URI and how is it structured?
  • How is a SIP header structured?
  • What is an SDP and how does it affect media?
  • How does SIP allow user mobility?
SIP Authentication
  • How SIP authentication works.
SIP Routing and Responses
  • Why are SIP transactions and dialogs important?
  • How does SIP Route calls?
  • The SIP trapezoid model.
Registration
  • How does SIP registration work?
The problem with NAT
  • What challenges does SIP face with NAT?
Media and RTP
  • Overview of the Real Time Protocol
Using Wireshark to Capture and Troubleshoot SIP
  • Overview of capturing SIP traffic
  • Installing Wireshark
  • General Wireshark options and starting your first capture.
Appendix
  • SIP Defintions