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Global Knowledge

SIP Essentials

Learn about Session Initiation Protocol (SIP) and other protocols related to SIP implementations.

GK #3251Virtual Classroom LiveClassroom Live
FormatsVirtual Classroom Live · Classroom LiveTopics5g · Collaboration And Unified Communications

What you’ll learn

  1. SIP Introduction
    • SIP Message Format
    • Legacy Call Control
    • Compare SIP
    • Packetizing Voice
    • SIP Call Flow
    • How SIP Routes Media
    • SIP Call Control
    • SIP in 4G
  2. SIP Architecture
    • SIP UA
    • SIP Requests
    • SIP Response
    • SIP URI
    • SIP Architecture
    • SIP Domain
    • SIP Registration
    • SIP Call Routing
    • Loose Routing
  3. Regular Expression
    • Metacharacters
    • Substitution
    • REGEX Modifications
  4. Routing the SIP INVITE
    • Proxy Routing
    • Via and Record-Route
  5. The SIP Dialog
    • SIP Dialog
    • The reINVITE
  6. SIP Entities
    • SIP Topology
    • SIP Proxy
    • B2BUA
    • Outbound Proxy
  7. SIP Call Flow Examples
    • Wireshark Colors
    • Wireshark Preferences
    • SIP Stack
    • REGISTER with Authentication
    • Wireshark Analysis of SIP Dialog
    • SIP Redirect
    • CFNA
    • REFER and Call Transfer
  8. SIP Call Routing
    • PRACK 100-rel
    • Call Forking
    • Loop and Spiral
    • Third Party Call Control
    • Path Minimization
    • SIP in the PLMN
    • OPTIONS Method
  9. SIP Uniform Resource Indicators (URIs)
    • URI vs. URL vs. URN
    • SIP URI Examples
    • URI Delimiters
    • SIP and SIPs
    • Tel URI
    • URI Escape Codes
  10. SIP and the DNS
    • Zone File
    • SOA and NS Records
    • A-Record
    • SRV Record
    • NAPTR Record
    • Locating SIP Servers
  11. ENUM
    • ENUM Database Example
    • ENUM Query and Response
    • ENUM REGEX
    • Post ENUM Routing
  12. SIP and the PSTN
    • Early Media
    • SIP-T and SIP-I
  13. SIPp
    • SIP QA testing
    • SIP DOS Testing
  14. SIP Message Headers
    • SIP Header Overview
    • Dialog ID Headers
    • User-Agent
    • SIPp Header Modification
    • Proxy-Authenticate
    • Allow and Supported
    • History Info
    • Join
    • Session Expires
    • PPI and PIA
    • Establish Service Path
    • IMS Hosted
    • Content-Type
  15. Session Description Protocol (SDP)
    • SDP Background
    • SDP Format
    • SIP = one way?
    • SDP Lines
    • SDP Offer/Answer
    • Call Hold
  16. RTP and Real-Time Control Protocol (RTCP)
    • RTP Headers
    • RTP Dejitter
    • Conferencing
    • RTCP
  17. DTMF Handling
    • DTMF
    • SIP INFO
    • RFC 2833
  18. Fax Handling
    • T.30
    • T.38
    • SDP RFC 3407
  19. Presence
    • Presence Overview
    • PIDF XML Example
    • Rich Presence
    • Presence Message Flow
    • Instant Messaging
  20. SIP Timers
    • Standard Timer Values
    • Session-Expires
  21. SIP Security
    • Security for Call Setup
    • Authentication
    • S/MIME
    • TLS
  22. SIP NAT Traversal
    • NAT
    • NAT Types
    • STUN & TURN

Upcoming training

Dates and availability are confirmed by Bolt when we follow up. All times are shown in the provider’s stated time zone.

2026-11-30 — 2026-12-0410:00 AM - 6:00 PM EST
Virtual Classroom LiveONLINE · English