Telephone Switching Course
Gain expertise in telephone switching through hands-on training in PSTN, VoIP, SIP, SS7, QoS, and network design. Develop skills in capacity planning, securing voice communications, professional troubleshooting, and managing seamless PSTN-to-IP transitions for robust telecom infrastructures in today's networks.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
This course provides a practical guide to mastering circuit and packet voice technologies, covering TDM basics, SS7/ISUP protocols, VoIP, SIP, RTP, and media gateways. Participants will learn QoS management, capacity planning, codec choices, high availability setups, migration approaches, interworking methods, and troubleshooting techniques to build and sustain top-notch voice networks.
Elevify advantages
Develop skills
- Design VoIP capacity by sizing trunks, concurrent calls, and QoS allocations.
- Configure SIP, RTP, and codecs to ensure reliable high-quality packet voice delivery.
- Implement secure voice solutions including SRTP, SIP TLS, NAT traversal, and firewall rules.
- Integrate PSTN with IP networks via SS7-SIP interworking, media gateways, and call flows.
- Troubleshoot voice networks with 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 classes are perfect. I got the one-year package and finally have the chance to follow a range of 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 extra videos really help with learning.

Giulio CarloPrompt Engineering Student
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