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Re: Virgins Infrastructure
That doesn't quite answer his question - your description only covers between the home and the distribution hub (CMTS) and not beyond, which is what the OP was asking.
There is no real distance limitation between the headend and the distribution hub(s), it could theoretically be hundreds or thousands of miles. The cabling is all fibre, though in some special cases can be satellite. On modern networks your data connection gets split off at the CMTS anyway so the rest is primarily only used for TV these days.
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