General Telephony Course
Master PSTN, VoIP, SIP, dial plans, QoS, and E911 in this comprehensive General Telephony Course. Design resilient voice networks, plan migrations, secure SIP trunks, and deliver reliable, user-friendly telephony solutions for modern telecommunications environments in a practical, fast-paced overview.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
This General Telephony Course provides a practical, fast-paced overview of modern voice systems, from PSTN and TDM PBXs to VoIP, SIP, and RTP. Learners design dialplans, call flows, and numbering schemes, plan migrations, manage analogue devices, and integrate IP or cloud PBXs. The course also addresses QoS, security, redundancy, E911, and real-world testing to enable confident deployment of stable, high-quality calling environments.
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, 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.What our students say
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