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General Telephony Course

General Telephony Course
4 to 360 hours flexible workload
valid certificate in your country

What will I learn?

This General Telephony Course provides a practical overview of modern voice systems, including PSTN, TDM PBXs, VoIP, SIP, and RTP. Participants learn to design dialplans, call flows, and numbering schemes, plan migrations, manage analogue devices, and integrate IP or cloud PBXs. Key topics include QoS, security, redundancy, E911, and real-world testing to deploy stable, high-quality calling environments confidently.

Elevify advantages

Develop skills

  • Design VoIP systems: plan codecs, call flows, and IP PBX or cloud PBX setups.
  • 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, normalise, and test PSTN connectivity.
  • Plan PSTN-to-VoIP migration: hybrid setups, number porting, and analogue 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 workload.
Workload: between 4 and 360 hours

What our students say

Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of interest without needing to change platforms... I'm grateful for everything you do, I've already recommended you to other people...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
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Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!
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Luciana AlvarengaNail Design Student
The platform is fast and simple to use. The diversity of content and complementary videos really help with learning.
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André FelipePrompt Engineering Student

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