Frequency Band Plan; Vdsl2 Profiles - ZyXEL Communications MSC1024G Series User Manual

Chapter 11 Subscriber Port Setup Screens

11.2.3 Frequency Band Plan

Each VDSL mode operates in a different frequency band allocation, resulting in different
upstream and downstream speeds. Your system automatically changes the band plan based on
the loop condition and loop length.
A band plan example is shown next. Band plans include an optional band (between 25 kHz
and 276 kHz) controlled by "limit PSD mask".
The optional band is used for upstream transmission which is to be negotiated during line
initiation. The optional band frequency (for example, x and y) varies depending on the limit
PSD mask you use.
Figure 123 A Band Plan Example
US0
x
A sample of optional band PSD masks and associated frequency bands used in the Device is
shown next.
Table 77 Optional band PSD Mask
LIMIT PSD MASK
nus0_d32
eu32_d32
eu36_d48
. . .
The "eu" number in the limit PSD mask is a tone index. A tone spacing, 4.3125 KHz, is used
for VDSL2 profile from 8a up to 17a. So "eu32" means the optional band ending at around
138 kHz. See

11.2.4 VDSL2 Profiles

The following table lists the supported Annex A VDSL2 profiles defined by the VDSL
standard. Refer to the ITU G.993.2 specifications for more information on other profiles. The
VDSL2 profiles available in an individual VDSL2 line card varies.
Table 78 Supported VDSL2 Profiles (Annex A)
PROFILE
Bandwidth (MHz)
Tone
Tone Spacing (kHz)
Line Power (dBm)
210
DS1
y
3.75
OPTIONAL BAND FREQUENCY
= No optional band
= 25 ~ 138 kHz
= 25 ~ 155.25 kHz
Section 11.8.3.1 on page 233
8A 8B
8.5 8.5
1972 1972
4.3125 4.3125
+17.5 +20.5
US1 DS2
8.5
5.2
for a list of PSD masks.
8C 8D 12A
8.5 8.5 8.5
1972 1972 1972
4.3125 4.3125 4.3125
+11.5 +14.5 +14.5
MSC1000G/1024G/1224G Series User's Guide
US2
Frequency
12
(MHz)
12B 17A 30A
8.5 17.66 30
1972 4096 4096
4.3125 4.3125 4.3125
+14.5 +14.5 +14.5