If you know nothing about it, I would start with Wikipedia, and then start exploring the referenced sources. Those sources will provide you with more knowledge, and more reading material. You could also ask a AI tool like GhatGPT some questions regarding the technology to get more research ideas, look for online tutorials, and web searches for any other sources you can find.
If you need more knowledge than familiarity with basic terms and concepts, I would generally expect several weeks or months of research. Saving Changes...
Most voip is learned by experience so there is not a lot out there as far as fundamentals publically. Master agents have a lot of material and certifications such as Intelisys, Avant, and Telarus. They have free fundamental programs you can train on with membership by a seller. Most telecom companies have their own training program. I would go to you tube and search voip and there are some resources there that can give you an overview. Technology is changing fast so most of the voip is in the cloud now and much easier to manage. I located https://www.youtube.com/watch?v=5qTTRkLJtLA for voip. I would also look at sdwan as that is a large part of telecom companies as well as disaster recovery. Good luck in your job search! Saving Changes...
I watched a couple of short videos that explained VoIP and SIP using real-life examples, then played around with a few online tools to see how everything connects—helped a lot. Saving Changes...
What helped was picking one thing at a time. I began with basic VoIP guides and then tested a small setup. Also, using call center software, like Active Calls, made it easier to see how SIP and cloud systems work in real life. It gave me a simple way to experiment without getting lost in jargon, and it made learning much less overwhelming. Saving Changes...
