General Telephony Course
Master PSTN, VoIP, SIP, dial plans, QoS, and E911 in one General Telephony Course. Design resilient voice networks, plan migrations, secure SIP trunks, and deliver reliable, user-friendly telephony for modern telecommunications environments.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
The General Telephony Course gives you a practical, fast-paced overview of modern voice systems, from PSTN and TDM PBXs to VoIP, SIP, and RTP. Learn to design dialplans, call flows, and numbering, plan migrations, handle analog devices, and integrate IP or cloud PBXs. You also cover QoS, security, redundancy, E911, and real-world testing so you can deploy stable, high-quality calling environments with confidence.
Elevify advantages
Develop skills
- Design VoIP architectures: plan codecs, call flows, and IP PBX or cloud PBX.
- Build dialplans: configure DIDs, IVR, hunt groups, and internal extensions.
- Engineer QoS and resilience: tune voice traffic, redundancy, and E911 routing.
- Implement SIP trunks and SBCs: secure, normalize, and test PSTN connectivity.
- Plan PSTN-to-VoIP migration: hybrid setups, number porting, and analog device support.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...

Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can switch chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos really help with learning.

André FelipePrompt Engineering Student
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