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.

4 to 360 hours of flexible workload
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 Differentials
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 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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