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9.
AnnexA_R_POTS_D-32_EU-32_8c
10. AnnexA_R_POTS_D-32_EU-32_8d
11. AnnexB_997_997E17-M2x-A
12. AnnexB_997_997E30-M2x-NUS0
13. AnnexB_998_998E17-M2x-NUS0
14. AnnexB_998_998E30-M2x-NUS0
15. AnnexC_POTS_25-138_b
16. AnnexC_POTS_25-276_b
17. AnnexC_TCM-ISDN
VDSL SNR
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.
You can set your SNR is this field, default is 6.
Line Type
You can select the VDSL line type, there are three types for selection – Interleave, fast and
No Limit. Default is Interleave type for VDSL CO mode.
Fast mode: guarantees a minimum end to end latency less than 1 ms.
Interleaved mode: provides impulse noises protection for any impulse noise with a
duration less than 250 us. Interleaved mode has a maximum end to end latency of
10m sec.
Rate Limit
You can limit your Max. Data Rate for Upstream and Downstream, select the data rate
which you want for Upstream and Downstream.
Upstream Rate Limit: The value of outbound traffic limitation in Mbps, from the VDSL2
CO to the CPE. Default is No Limit. The range between 1Mbps to 100Mbps.
Downstream Rate Limit: The value of inbound traffic limitation in Mbps, from the
VDSL2 CPE to the CO. Default is No Limit. The range between 1Mbps to 100Mbps.
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