ZyXEL Communications IES-1248 VDSL-SWITCH User Manual page 107

LABEL
Name
Latency Mode
UP Stream
Max Rate (kbps) Type a maximum upstream transfer rate (32 to 3000 Kbps) for this profile. Configure the
Min Rate (kbps) Type the minimum upstream transfer rate (32 to 3000 Kbps) for this port. Configure the
Interleave Delay (ms) Configure this field when you set the Latency Mode field to Interleave. Type the number
Max SNR (db) Type the maximum upstream signal to noise margin (0-31 dB).
Min SNR (db) Type the minimum upstream signal to noise margin (0-31 dB). Configure the minimum
Target SNR (db) Type the target upstream signal to noise margin (0-31 dB). Configure the target upstream
Down Stream
Max Rate (kbps) Type a maximum downstream transfer rate (32 to 25000 Kbps) bps for this port.
Min Rate (Kbps) Type the minimum downstream transfer rate (32 to 25000 Kbps) for this port. Configure
Interleave Delay (ms) Configure this field when you set the Latency Mode field to interleave. Type the number
Max SNR (db) Type the maximum downstream signal to noise margin (0-31 dB).
ADSL Port Setup
Table 11-5 Port Profile
When editing a profile, this is the name of this profile. When adding a profile, type a name
(up to 31 characters) for the profile.
This field sets the ADSL latency mode for the ports that belong to this profile.
Select Fast mode to use no interleaving and have faster transmission (a "fast channel").
This would be suitable if you have a good line where little error correction is necessary.
Select Interleave mode to use interleave delay when transmission error correction
(Reed- Solomon) is necessary due to a less than ideal telephone line.
See section 11.4 for more on interleave delay.
The following parameters relate to upstream transmissions.
maximum upstream transfer rate to be less than the maximum downstream transfer rate.
minimum upstream transfer rate to be less than the maximum upstream transfer rate.
of milliseconds (1-255) of interleave delay to use for upstream transfers. It is
recommended that you configure the same latency delay for both upstream and
downstream.
upstream signal to noise margin to be less than or equal to the maximum upstream signal
to noise margin.
signal to noise margin to be greater than or equal to the minimum upstream signal to
noise margin and less than or equal to the maximum upstream signal to noise margin.
The following parameters relate to downstream transmissions.
Configure the maximum downstream transfer rate to be greater than the maximum
upstream transfer rate.
the minimum downstream transfer rate to be less than the maximum downstream transfer
rate.
of milliseconds (1-255) of interleave delay to use for upstream transfers. It is
recommended that you configure the same latency delay for both upstream and
downstream.
DESCRIPTION
IES-1248 User's Guide
11-13