Telephone Switching Course
Master telephone switching through practical expertise in PSTN, VoIP, SIP, SS7, QoS, and network design. Acquire skills to plan capacity effectively, secure voice traffic robustly, troubleshoot using professional tools, and spearhead dependable PSTN-to-IP migrations within contemporary telecom infrastructures.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
This Telephone Switching Course offers a targeted, hands-on route to mastering circuit and packet voice technologies, spanning TDM basics and SS7/ISUP through to VoIP, SIP, RTP, and media gateways. Delve into QoS, capacity planning, codec choices, and high availability measures, followed by migration approaches, interworking solutions, and diagnostic tools essential for designing, refining, and sustaining robust, superior-quality voice networks.
Elevify advantages
Develop skills
- Design VoIP capacity: dimension trunks, concurrent calls, and QoS budgets.
- Configure SIP, RTP, and codecs for reliable, high-quality packet voice transport.
- Implement secure voice: SRTP, SIP TLS, NAT traversal, and firewall policies.
- Integrate PSTN and IP: SS7–SIP interworking, media gateways, and call flows.
- Troubleshoot voice networks using Wireshark, CDRs, MOS tools, and RTP analysis.
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
Your lessons are perfect. I purchased the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... thank you for everything you do, I've already recommended you to others...

Giulio CarloDigital Marketing Student
I like how the lessons get straight to the point and how I can switch chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way the videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast and easy to use. The variety of content and the supplementary videos really help with learning.

Giulio CarloPrompt Engineering Student
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