Manual of VDSL2 Mini MEG101AE-R4
Page #12
http://www.black-box.eu
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Cabling Guidelines and Rules
In general there are four rules about xDSL cabling:
1.)
The thicker the cable, the better
2.)
The weakest part of the cable makes up the quality of the whole
3.)
Watch out for EMI sources
4.)
Use twisted cabling
Rule 1 means that using an AWG24 cable is always better than an AWG28. Watch out for
stranded cables. Stranded cables are not as good as solid cables of the same AWG value.
Rule 2 means that one bad interconnect or a few meters of AWG28 cable matters very
much, even if the whole rest of the route is thick and good. That´s why you should never
use telephony ribbon cables to connect the xDSL modem. That is just like a four lane
highway ending up with one lane at the end.
Rule 3: Any device using cables is not happy with EMI and interference. Check the route
of the cables. Are they running nearby an elevator or any other device using high
power/amps?
Rule 4: Use twisted cabling if available. Twisted cables are better because with not
twisted cables the crosstalk effect from other cables and signals is remarkable. Out there
are also cables where four wires being twisted together (Quad cabling). Avoid using both
cable pairs for the same type of technology.