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On 26/10/2018 19.45, James Knott wrote:
On 10/26/2018 01:29 PM, Knurpht-openSUSE wrote:
This was at a conference where we just heard that 1Mbit/sec accross copper telephony cables was not technically impossible ( where the market said it was ).
????
A T1 line could carry 1.544 Mb over 2 pairs, back in 1962, well before there was such a thing as Unix.
https://en.wikipedia.org/wiki/T-carrier#Transmission_System_1
Yes, but a T1 was a coaxial cable, designed to carry that speed, whereas a telephone copper pair was designed, if it was at all designed, to carry voice. What almost everybody thought, was that it was impossible to carry 1 Mb/s on those POT lines as they were. -- Cheers / Saludos, Carlos E. R. (from 42.3 x86_64 "Malachite" (Minas Tirith))