ZyXEL Communications MSC1024G Series User Manual page 772

Chapter 32 profile Commands
where
<profile>
<us-max-rate>
<ds-max-rate>
[fast|delay <us-
delay> <ds-delay>]
[minrate <us-min-
rate> <ds-min-
rate>]
[usmgn <us-max-
mgn> <us-min-mgn>
<us-tgt-mgn>]
[dsmgn <ds-max-
mgn> <ds-min-mgn>
<ds-tgt-mgn>]
usra
dsra
<us-us-mgn>
<us-ds-mgn>
<ds-us-mgn>
<ds-ds-mgn>
The profile is a list of ADSL line configuration settings. After you create an ADSL profile,
you can assign it to any of the ADSL ports on any of the ADSL line cards.
Note that the default value will be used for any of the above fields that are omitted.
The ADSL up/down shift noise margins define the threshold that triggers rate adaptation. For
example:
The target SNR is 6, and the up/down shift noise margins are 9/3
If the signal becomes better and the SNR is higher than 9, rate adaptation is triggered and the
line rate becomes higher
If the signal becomes bad and the SNR is lower then 3, rate adaptation is triggered and the line
rate becomes lower.
The following example creates a premium profile (named gold) for providing subscribers with
very high connection speeds and no interleave delay. It uses the following settings.
• The maximum upstream rate is set to 2048 Kbps.
• The maximum downstream rate is set to 16000 Kbps.
• No interleave delay.
772
= The descriptive name for the profile.
The maximum ADSL upstream transmission rate, 64~4096 in Kbps.
=
The upstream rate must be less than or equal to the downstream
rate.
= The maximum ADSL downstream transmission rate, 64~32000 in
Kbps.
= The latency mode. With interleave, you must also define the
upstream and downstream delay (1-255 ms). It is recommended
that you configure the same delay for both upstream and
downstream.
= The minimum ADSL upstream transmission rate (32~4096 Kbps)
and the minimum ADSL downstream transmission rate (32~32000
Kbps).
The maximum, minimum and target acceptable ADSL upstream
=
signal to noise margins (0~310 in 0.1 dB measurements).
= The maximum, minimum and target acceptable ADSL downstream
signal to noise margins (0~310 in 0.1 dB measurements).
The upstream rate adaptation setting.
=
fixed : no rate adaptation
startup : rate adaptation at initialization
: rate adaptation any time
runtime
= The downstream rate adaptation setting.
= The upstream up shift noise margin (0~310 in 0.1 dB).
The upstream down shift noise margin (0~310 in 0.1 dB).
=
The downstream up shift noise margin (0~310 in 0.1 dB).
=
= The downstream down shift noise margin (0~310 in 0.1 dB).
MSC1000G/1024G/1224G Series User's Guide