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

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
The General Telephony Course provides a practical, fast-paced overview of modern voice systems, from PSTN and TDM PBXs to VoIP, SIP, and RTP. You will learn to design dialplans, call flows, and numbering plans, plan migrations, manage analog devices, and integrate IP or cloud PBXs. It also covers QoS, security, redundancy, E911, and real-world testing to deploy stable, high-quality calling environments confidently.
Elevify advantages
Develop skills
- Design VoIP architectures by planning codecs, call flows, and IP PBX or cloud PBX setups.
- Create dialplans by configuring DIDs, IVR, hunt groups, and internal extensions.
- Implement QoS and resilience by optimising voice traffic, redundancy, and E911 routing.
- Set up SIP trunks and SBCs to secure, normalise, and test PSTN connectivity.
- Plan PSTN-to-VoIP migrations with 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 workload.What our students say
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