In your opinion, which way of studying VoIP is more effective and interesting for students (laboratory work, practical tasks)?

Question

Asterisk

How would you suggest equipping the laboratory? What skills and abilities should students acquire after completing the course?
Thank you Viktor for your comment.
UPD: what equipment would you recommend for conducting a lab work (pros / cons according to work experience)? Does anyone know if there are any specialized stands? (Google gave me only a couple of options)

Answer 1

I am not an expert in VoIP, the following points would be of interest to me when studying the topic:
1) application of theory to practice. How the signal is compressed and digitized, with spectra, quantization noise graphs and other visual materials. Roughly speaking, they changed the codec - they saw and heard the result.
2) solving basic problems. Raising a small call center. Also with a theoretical justification (RTP, SIP, encapsulation, other buzzwords, etc.). Perhaps writing your own, slow and crooked, nano-clone of the asterisk.
3) the impact of the network (delay, jitter, packet loss) on the quality of service. Troubleshooting.
4) security in the sense of unauthorized access.

Answer 2

External exam, by 5-minute communication with the "professor" through his own raised VoIP-channel, a detailed description in 5 minutes by the student of the details of the work done + answers to questions.

Answer 3

Undoubtedly, to begin with, there must be a theory. After mastering it, there is a desire to test your knowledge in practice. Practical and laboratory work simulating real life tasks. Without a solid knowledge of theory, practice is usually meaningless.