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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.