Telephone Switching Course
This course builds strong skills in telephone switching for PSTN and VoIP networks. You will learn to handle SS7, SIP, RTP, QoS planning, secure communications, advanced troubleshooting, and smooth shifts from traditional to IP-based telecom systems for dependable voice services.

flexible workload from 4 to 360h
valid certificate in your country
What will I learn?
Gain hands-on expertise in telephone switching, covering TDM basics, SS7/ISUP protocols, VoIP with SIP, RTP, media gateways, QoS management, capacity planning, codec choices, high availability setups, migration plans, interworking solutions, and key troubleshooting methods to build and sustain robust voice networks.
Elevify advantages
Develop skills
- Design VoIP capacity by sizing trunks, calls, and QoS needs.
- Set up SIP, RTP, and codecs for top-notch packet voice.
- Secure voice calls with SRTP, SIP TLS, NAT, and firewall rules.
- Link PSTN and IP networks via SS7-SIP gateways and call flows.
- Troubleshoot voice issues using Wireshark, CDRs, MOS, and RTP tools.
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
Your classes are perfect. I got the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... I appreciate everything you do, I've already recommended you to others...

Giulio CarloDigital Marketing Student
I like how the lessons are 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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