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 specification, 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 usually 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 terminal 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 identify and subsequently isolate and eliminate the source of noise.

Generally speaking, the higher SNR value gets better line quality, but lower performance.

31