Telephone Switching Course
Gain expertise in telephone switching through hands-on training in PSTN, VoIP, SIP, SS7, QoS, and network design. Develop skills to plan capacity, secure communications, troubleshoot using professional tools, and manage seamless PSTN-to-IP transitions in contemporary telecom environments.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course provides a practical guide to mastering telephone switching, covering TDM basics, SS7/ISUP, VoIP protocols like SIP and RTP, media gateways, QoS management, capacity planning, codec choices, high availability setups, migration paths, interworking solutions, and troubleshooting for robust voice networks.
Elevify advantages
Develop skills
- Design VoIP capacity by sizing trunks, calls, and QoS.
- Configure SIP, RTP, codecs for quality packet voice.
- Implement secure voice with SRTP, SIP TLS, NAT, firewalls.
- Integrate PSTN-IP via SS7-SIP, gateways, call flows.
- Troubleshoot networks with Wireshark, CDRs, MOS, RTP tools.
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 purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...

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 videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos really help with learning.

André FelipePrompt Engineering Student
FAQ
Who is Elevify? How does it work?
Do the courses have certificates?
Are the courses free?
What is the course workload?
What are the courses like?
How do the courses work?
What is the duration of the courses?
What is the cost or price of the courses?
What is an EAD or online course and how does it work?
PDF Course