Plain-English IT and telecoms
Jargon explained, common problems fixed, and the basics of how it all works. Written by the engineers who do this every day.
Fix It13 Oct 2026 · 2 min readFix It13 Oct 2026 · 2 min readIT Terms Explained13 Oct 2026 · 2 min read
Choppy VoIP calls? The first things to check
Robotic voices and dropouts usually come from the network, not the phone. These checks quickly narrow down where the problem is.
ONT or ONU? The box on your wall and what its lights are telling you
The small box where fibre enters your building is the ONT. Here is what it does, how it differs from an ONU, and how to read its lights before you call for help.
What is VoIP, and what does SIP have to do with it?
VoIP means making phone calls over a data network. SIP is the language that sets those calls up. Here is how the two fit together.
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