Planet VC-23 Series User Manual page 25

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, the quality
of line gets better, but with lower performance.
Q7: What is profile and what's the benefit?
A7: VDSL2 defines multiple band plans and configuration
modes (profiles) to allow asymmetric and symmetric
services in the same binder (by designated frequency
bands) for the transmission of upstream and downstream
signals. User has the ability to select fixed band plan.
Profile 17a is selected for long-distance transmission but
with average performance while Profile 30a is selected
for short-distance
performance.
transmission but with wire-speed
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