General Telephony Course
This course provides a comprehensive overview of modern telephony systems, covering PSTN, TDM PBXs, VoIP, SIP, and RTP. Participants will learn to design dialplans, call flows, and numbering schemes, plan migrations from PSTN to VoIP, manage analog devices, and integrate IP or cloud PBXs. Key topics include QoS, security, redundancy, E911, and practical testing to ensure deployment of stable, high-quality voice networks in telecommunications environments.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain practical insights into modern voice systems from PSTN and TDM PBXs to VoIP, SIP, and RTP. Master designing dialplans, call flows, and numbering, planning migrations, handling analog devices, and integrating IP or cloud PBXs. Explore QoS, security, redundancy, E911, and real-world testing for confident deployment of reliable telephony solutions.
Elevify advantages
Develop skills
- Design VoIP systems: plan codecs, call flows, and IP PBX or cloud PBX setups.
- Build dialplans: set up DIDs, IVR, hunt groups, and internal extensions.
- Engineer QoS and resilience: optimise 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 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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