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Q6: Can VC-201 compatible with VC-200M / VC-200S?
A6: Currently NO, although VC-201 and VC-200M/200S are
base on ITU-T G.993.2 VDSL2, but with different chip-
set specication, so far they are not compatible with
each other.
Q7: What is SNR and what’s the effect?
A7: In analog and digital communications, Signal-to-
Noise Ratio, often written SNR, is a measure of signal
strength relative to background noise. The ratio is usu-
ally measured in decibels (dB).
In digital communications, the SNR will probably cause
a reduction in data speed because of frequent errors
that require the source (transmitting) computer or ter-
minal to resend some packets of data. SNR measures
the quality of a transmission channel over a network
channel. The greater the ratio, the easier it is to iden-
tify and subsequently isolate and eliminate the source
of noise.
Generally speaking, the higher SNR value gets better
line quality, but lower performance.