Configuration/Port/VDSL Near-End Help

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VDSL Near-End Profile

Maximum Power(dB)

Specifies the maximum aggregate power level in the range 0 to 14.5 dBm."

Default:

58

Maximum SNR Margin(dB)

Specifies the maximum Signal/Noise Margin in units of 0.10 dB, for a range of 0 to 31.0 dB.

Default:

127

Minimum SNR Margin(dB)

Specifies the minimum Signal/Noise Margin in units of 0.10 dB, for a range of 0 to 31.0 dB.

Default:

0

Target SNR Margin(dB)

Specifies the target Signal/Noise Margin in units of 0.10 dB, for a range of 0 to 31.0 dB.

This is the Noise Margin the transceivers must achieve with a BER of 10^-7 or better to successfully complete initialization.

Fast Maximum Data Rate(KB/s)

Specifies the maximum downstream fast channel data rate in steps of 1000 bits/second.

Fast Minimum Data Rate(KB/s)

Specifies the minimum downstream fast channel data rate in steps of 1000 bits/second.

Slow Maximum Data Rate(KB/s)

Specifies the maximum downstream slow channel data rate in steps of 1000 bits/second.

The maximum aggregate downstream transmit speed of the line can be derived from the sum of maximum downstream fast and slow channel data rates.

Slow Minimum Data Rate(KB/s)

Specifies the minimum downstream slow channel data rate in steps of 1000 bits/second.

The minimum aggregate downstream transmit speed of the line can be derived from the sum of minimum downstream fast and slow channel data rates.

Rate Ratio

For dynamic rate adaptation at startup, the allocation of data rate in excess of the minimum data rate for each channel is controlled by the object.  This object specifies the ratio of the allocation of the excess data rate between the fast and the slow channels.  This allocation represents upstream Fast Channel Allocation/Slow Channel Allocation.

Defalut:

0

Maximum Interleave Delay

Specifies the maximum interleave delay for the downstream slow channel.

Power Backoff Control

disabled

auto

manual

Downstream power backoff (PBO) control for this line. For transceivers which do not support upstream PBO control, this object MUST be fixed at disabled. If auto is selected, the transceiver will automatically adjust the power backoff. If manual is selected, then the transceiver will use the value from zhoneVdslLineConfUpPboLevel.

Deault:

Disabled

Power Backoff Level(0-160)

Specifies the downstream backoff level to be used when set to manual.

Default

0

PSD Template

The downstream PSD template to be used for the line.

Target Slow Burst

Specifies the target level of impulse noise (burst) protection for an interleaved (slow) channel.

Maximum Fast FEC

This parameter provisions the maximum level of Forward Error Correction (FEC) redundancy related overhead to be maintained for a fast channel.

Trellis

Enables/disables downstream Trellis coding.

Maximum Agg. Transmit Power

Maximum total power that is allowed to be transmitted in the downstream direction.

Maximum PSD

The maximum power spectral density level allowed on the line at the transmitter output downstream for initialization and showtime signals.

PSD Shape

custom-psd

region-a-psd

region-c-psd

region-b-m1-a-psd

region-b-m1-b-psd

region-b-m1-us0-psd

region-b-m2-a-psd,

region-b-m2-m-psd

region-b-m2-b-psd

region-b-m2-us0-psd

Maximum transmit PSD allowed in the downstream channel on a VDSL2 line.

Default

region-a-psd

Virtual Noise SNR Mode

mode1

mode2

mode3

Downstream virtual noise SNR mode on a VDSL2 line.

Default

mode1

Erasure Detection Fast

Indicates whether the erasure detection mechanism should be enabled or disabled in the downstream fast channel.

Default

enable

Erasure Detection Interleave

Indicates whether the erasure detection mechanism should be enabled or disabled in the downstream slow channel (interleave).

Default

Enable

RS Coding

Parameter to enable/disable RS Coding in upstream channel.

Default

disable

April 2, 2011