SIP Essentials Training
In this course, students learn Session Initiation Protocol and important protocols related to SIP implementations. This course thoroughly explains what SIP is, how it works, and provides a practical guide on how to use it.
Course Overview
The lessons in this course are clear and very technical. In this course, students will examine how SIP interoperates in the current telecommunications network, going beyond the basics of the protocol and getting a big picture understanding of how it all fits together. This course is a vendor-agnostic study of Session Initiation Protocol designed for the person that must make SIP work. Attending students also receive access to the Alta3 Research SIP certification exam; passing it earns the Alta3 SIP certificate.
Learning Objectives
- Learn SIP and the protocols around it, including RTP, RTCP and DNS
- Understand the differences between RFC 2543 and RFC 3261, and the other relevant RFCs
- Use Wireshark to read and troubleshoot SIP
- Deploy a SIP proxy and a SIP user agent
- Troubleshoot SIP signalling failures
- Troubleshoot audio and media problems
- Use AI prompting to produce configuration snippets and solutions
Course Outline
- Module 1: VoIP Fundamentals
- Introduction to VoIP
- Module 2: Packet Captures
- Uploading PCAPs for analysis (optional)
- Introduction to Wireshark
- Termshark
- Module 3: SIP Registrars
- SIP architecture
- Successful REGISTER by a user agent
- REGISTER fails authentication
- deREGISTER and log out
- Module 4: The SIP INVITE
- Regular expressions
- Building a dial plan with RegEx
- Routing the INVITE The SIP INVITE
- SIP INVITE packet analysis with Wireshark
- Module 5: Establishing Calls The SIP dialog
- Troubleshooting common SIP failures with Wireshark
- SIP entities
- Module 6: Call Flows
- Basic SIP call flows
- SIP 3xx redirection
- Call forwarding and 3xx responses
- SIP REFER
- SIP REFER for call transfer
- SIP PRACK and 100rel
- Call forking
- Module 7: SIP Proxies
- Call routing
- INVITE relay by SIP proxies
- No record routes
- SIP URIs
- Cancelled SIP calls
- Global failures and 6xx responses
- Module 8: Supporting Systems
- SIP and the DNS
- ENUM
- Interoperating with the PSTN
- Module 9: SIP Tools
- Installing Asterisk
- Linux fundamentals
- Using vim
- Making pcaps with tcpdump
- Making pcaps with tshark
- SIPp and the SIPp SIP tester The SIP Swiss Army Knife
- Module 10: SIP Headers
- Common SIP headers
- Module 11: Session Description Protocol
- Session Description Protocol (SDP)
- SDP video call setup
- Diagnosing failed SDP video call setup
- Module 12: Real-Time Transport Protocol
- Real-time Transport Protocol (RTP)
- One-way media
- Module 13: Dual-Tone Multi-Frequency
- Transmitting DTMF
- Methods for transport of DTMF
- Module 14: Fax
- Fax handling
- Module 15: Presence
- Presence
- SIP PUBLISH
- Presence and IM exchange
- Module 16: SIP Timers
- SIP timers
- Module 17: SIP Security
- SIP security
- Module 18: NAT
- NAT and NAT traversal issues
- Module 19: Optional Case Studies
- Avaya Aura Session Manager
- Building a virtual home lab
- Module 20: Certification The Alta3 Research SIP certification exam (optional)
Intended Audience
Any company or individual who wants to advance their comprehension of VoIP and SIP.
Prerequisites
None required
Related training topics
Justify your training
Use this sample request letter — copy it into an email to your manager and personalize the bracketed details to make the case for the time and budget.
Sample training request letter
Subject: Request for Networking & Wireless training from Applied Technology Academy
[Decision Maker Name],
I'm writing to request time and budget approval to complete Applied Technology Academy's course, SIP Essentials Training. The information below outlines how this training benefits our organization, the tasks I'll be able to perform after completing it, and relevant cost and funding details.
Course Description
In this course, students learn Session Initiation Protocol and important protocols related to SIP implementations. This course thoroughly explains what SIP is, how it works, and provides a practical guide on how to use it. Applied Technology Academy is an award-winning, SBA-certified woman-owned training provider (est. 2019) whose instructors are active practitioners. The course combines instructor-led training with practical exercises, real-world examples, and computer-based activities designed to reinforce job-relevant skills. It also includes formal hands-on labs for applied, learn-by-doing practice in a live environment.
Course Objectives
Once I've completed the course, I'll be able to:
- Learn SIP and the protocols around it, including RTP, RTCP and DNS
- Understand the differences between RFC 2543 and RFC 3261, and the other relevant RFCs
- Use Wireshark to read and troubleshoot SIP
- Deploy a SIP proxy and a SIP user agent
- Troubleshoot SIP signalling failures
- Troubleshoot audio and media problems
- Use AI prompting to produce configuration snippets and solutions
Expected Organizational Benefits
After completing this course, I will be better equipped to apply these skills directly to our projects, reduce our reliance on outside expertise, strengthen our team's capabilities, and share what I learn with colleagues.
Expected Cost & Funding
Course fee: [request an itemized quote at the link below]. Applied Technology Academy supports multiple funding paths that may reduce or cover this cost: GSA MAS purchasing and government purchase orders, military credentialing funding (Army CA, AF COOL, CG COOL), VA GI Bill and VR&E, ATA Flexible Spending, and student financing. Private team cohorts are available if colleagues should attend with me.
Conclusion
This training provides practical, hands-on experience I can apply immediately to strengthen our work in Networking & Wireless. Additional course information is available at https://appliedtechnologyacademy.com/alta3-research-training/sip-essentials-training/.
Thank you for your consideration,
[Your Name]
Design training around your team, not the other way around.
Talk to a training advisor about private cohorts, funding paths and program management.