Are there any lessons in nature on voip, tdm, automatic telephone exchange and similar technologies?

Question

Books

Good day! Could you tell me if there are any lessons in nature on voip, tdm, automatic telephone exchange and similar technologies. In general, I am interested in translation or at least subtitles for this material - rutracker.org/forum/viewtopic.php?t=1015869
I would be grateful for any information, be it books or audio-video lessons!

Answer 1

In such cases, I use Wikipedia, the easiest, fastest and most understandable way to enter the structure of a new topic and begin to more or less clearly formulate my tasks. Under them, you can already find deeper sources.

Answer 2

Oh. It's you who mixed everything into a mess.
Automatic telephone exchange - vendor-dependent - each vendor of "ordinary" automatic telephone exchanges is perverted very much and very much in its own way. To work and maintain with each PBX, you need to take your own courses, sometimes for more than one year, not counting a general understanding of how it all works.
voip is also a very broad concept - MS Lync, avaya, SIP, rtp/rtsp, asterisk - these are all individually very thick directions that take a very long time to deal with. and if you take all this, you need to deal with the full stack of tcp / ip, QoS, security and protection of voice traffic.
Separately, there are still issues of crossing different animals among themselves, such as making Lync and Asterisk friends with each other, for example.

Answer 3

This is exactly what interests me. General, superficial, knowledge of voice transmission