Chapter 6 Basic Setting
Table 14 VDSL Profile Setup (continued)
LABEL | DESCRIPTION |
Rate Adaptive | Rate adaption is the ability of a device to adjust from the configured transmission |
| rate to the attainable transmission rate automatically depending on the line quality. |
| The VDSL transmission rate then stays at the new rate or adjusts if line quality |
| improves or deteriorates. |
| Select a rate adaptive mode. Select Manual to disable transmission rate |
| adjustment. Select AdaptAtInit to enable the switch to adjust to a new lower rate |
| when the line quality deteriorates until the connection is broken. |
|
|
Max SNR | Select the maximum SNR (Signal to Noise Ratio) margin allowed on the channel. |
|
|
Target SNR | Select the target SNR (Signal to Noise Ratio) margin for the channel. |
|
|
Min SNR | Select the minimum SNR (Signal to Noise Ratio) margin allowed on the channel. |
|
|
MaxInterleave | Specify maximum interleave delay for the slow channel. It is recommended that |
Delay | you configure the same latency delay for both downstream and upstream. |
|
|
Max Aggregate | Specify the maximum aggregate power level for upstream and downstream |
Power | transmission. |
|
|
Rate Ratio | Select to use the data rate allocated for the fast or slow channel. Valid values are |
| 0 and 100. |
| Enter 0 to use slow channel (at the rate you specified in the Slow Channel |
| Payload Rate field) which is best suited for data transmission. |
| Enter 100 to use fast channel (at the rate you specified in the Fast Channel |
| Payload Rate field) for |
|
|
Impulse Noise | Specify the level of impulse noise (burst) protection (in microseconds) for a slow |
Protection | (or interleaved) channel. Enter a number between 0 and 1275. |
|
|
FEC Redundancy | This field displays the Forward Error Correction (FEC) redundancy overhead for a |
| fast channel. |
| This field is neither configurable nor applicable at the time of writing. |
|
|
Template PSD | Select a PSD mask for the upstream and downstream traffic. |
Mask |
|
|
|
PBO Control | Set the upstream PBO control. PBO (Power Back Off) allows the switch to provide |
| better service in a network environment with telephone wiring of varying lengths. |
| Select Disable to disable this feature. |
| Select Auto to set the switch to automatically adjust the power backoff. |
| Select Manual to specify a power backoff level in the PBO Level field. |
|
|
PBO Level | If you select Manual in the PBO Control field, select a PBO level. |
|
|
Band Plan | Specify a VDSL band plan to use for the line. |
| Select BandPlan998 for |
|
|
Band Plan FX | This field displays the band frequency range (3750 to 12000) between the D2 and |
| U2 bands. |
| This field is neither configurable nor applicable at the time of writing. |
|
|
Applicable | Your switch automatically selects a standard to use for VDSL services. |
Standard |
|
|
|
Deployment | Specify a VDSL deployment scenario. |
Scenario | Select FTTCab if the switch is located in a street cabinet. |
| Select FTTEx if the switch is located at the central office (CO). |
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