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You cannot use the BT socket - the end of the ISP line needs to have one, and only one, modem on the end of it, so you cannot "just" plug another router into the phone line on n extension socket.
Contrary to other opinions here, I have a 23 quid TPLink Wi-Fi repeater and it works just fine - but then I'm prepared to accept the speed clobbering such devices effect as I don't need huge speeds for a bit of light web surfing and the occasional download.
So-called "mesh" systems (such as BT's discs and other "whole home" systems) are Wi-Fi repeaters, with a bit of a rebranding and some software extras to aid roaming hand offs, establishment of the backhaul links, set up and so on.
There's actually no such thing as "Wi-Fi Signal" as it is popularly imagined and thusly there's nothing to "boost" (not withstanding that it's physically impossible to "boost" any radio signal.) Wi-Fi is not some kind of ethereal energy field like "The Force." I submit that the best analogy is sound - just as there's no "audio signal" there's no "Wi-Fi signal." Communication devices need to make noises that can the heard by the intended recipient, and for two way communication (which all Wi-Fi is) both sides of the conversation need to be able to "hear each other."
All Wi-Fi is facilitates by "Access Points" whether they are stand alone devices or built into other things like router, HomePlugs, repeaters "mesh" systems or whatever. If a single AP cannot provide the required coverage and/or service quality, then the only alternative is to put up more AP's and create a "cellular" coverage pattern: On big sites we put up hundreds.
The "trick" is how we establish the "backhaul" link between AP's and the rest of the (wired) network. The most reliable and fastest backhaul is usually to be found over "proper" wired data networking links such as ethernet over UTP. Next best is (probably) using HomePlugs. (Check out some of Greg's reviews of such devices in this site.) Least good is using Wi-Fi for the backhaul as well as the client access. This could be repeaters, mesh systems, "whole home" systems and so on. Some of the newer ones are employing a few tricks such as "tri-band" to mitigate some of the bandwidth (speed) clobbering inherent in Wi-FI repeaters, but fundamentally repeaters suffer because the backhaul transmissions and client transmissions all have to compete with each other for some "air time." (In Wi-Fi "only one thing at a time can transmit" and there are "rules" that determine who's turn it is and how to get along with the "neighbours.") Repeaters have there uses but if speed is important and you can find better alternatives, it's best to do so. |
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