Vdsl2 Line Profile Setup > Rate Adaptive - ZyXEL Communications MSC1024G Series User Manual

Chapter 13 Profile Screens
13.7.2 VDSL2 Line Profile Setup > Rate Adaptive
Click the Modify link next to the Rate Adaptive field in the VDSL2 Line Profile Setup
screen to open the screen as shown next. Use the screen to configure detailed rate adaption
settings.
Figure 212 Profile > VDSL2 > LineProfile > Rate Adaptive
The following table describes the labels in this screen.
Table 146 Profile > VDSL2 > LineProfile > Rate Adaptive
LABEL
DownStream
UpStream
Rate Adaptive
Up-Shift SNR
Up-Shift Time
Down-Shift SNR
Down-Shift Time
Apply
Cancel
Clear
338
DESCRIPTION
Configure the following settings for the MSC-to-CPEs direction.
Configure the following settings for the CPEs-to-the-MSC direction.
Select the rate adaptive modes for downstream and upstream transmissions.
Select Manual to fix the transmit rate as the minimum net data rate and disable
transmission rate adjustment. If the attainable speeds cannot match configured
speeds, then the link may go down or communications may be sporadic due to
line errors and consequent retransmissions.
Select AdaptInit to keep the transmit rate negotiated between CO and CPE
devices. It ranges from the configured minimum to the maximum net data rate
based on the initial line condition.
Select DynamicRa to dynamically change the transmission rate negotiated
between the system and CPE devices during initialization as well as during
SHOWTIME status.
Enter the number of decibels (in 0.1 dB) for the line's up-shift SNR margin
threshold. When the line's signal-to-noise margin goes above this number, the
system attempts to use a higher transmission rate.
Enter the number of seconds to wait before using a higher transmission rate
when the line's SNR margin is over the up-shift SNR margin threshold.
Enter the number of decibels (dB) for the line's down-shift SNR margin
threshold. When the line's signal-to-noise margin goes below this number, the
system attempts to use a lower transmission rate.
Enter the number of seconds to wait before using a lower transmission rate
when the line's SNR margin is less the down-shift SNR margin threshold.
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
Click Cancel to reset the fields to your previous configuration.
Click Clear to return to the previous screen.
MSC1000G/1024G/1224G Series User's Guide