The detection mechanisms can actually conflict with each other and cause one side to get it wrong.
The term is being commonly misused to refer to almost any device that converts between ethernet (the digital signal) and the various ways that connectivity is delivered by ISPs.
DSL, cable and cellular modems may not actually convert to and from analog/audio tones, but between differing types of digital modem the speed is typically 10mbs.
If your computer is connected to a router A router is a computer network device that receives data through one connection and then sends (routes) it to other connections, perhaps making changes to the data as it passes it on.
Most consumer-grade routers are actually fairly simple devices, with a connection to the internet on one “side” (the “outside” or WAN connection), and connections to one or more computers on the other (“inside” or LAN connections).
Most will also monitor the speed continuously just in case it changes.
That means that if the device is going to make a mistake it could happen at any time.
Consumer and small business grade routers usually have a simple web-based interface that allows you to control various configuration options, such as IP addressing and security. :* What’s the difference between a Hub, a Switch and a Router?
DSL is an acronym for Digital Subscriber Line, a technology that transmits digital data across existing voice telephone lines.
In most cases, especially on a small business or home network, you know what your network speed is and the autodetect functionality is unnecessary.
It’s typically easy to turn off auto-speed detection on your network card and that’s often a good step to take when analyzing network problems. Click the image above for a short video showing how to turn off network auto-speed detection.
And that can look like anything from really poor network performance to a previously working network connection suddenly dropping.