Zhone 6211, User Manual

Page: 76 / 104

Advanced Setup
76
6211-I1 ADSL2+ Router User’s Guide 6211-A2-ZB21-40
Tone Selection
To view the ADSL Tone Settings screen, click on the Tone Selection button of
the DSL Advanced Settings screen (see
Figure 65 ).
The frequency band of ADSL is split up into 256 separate tones, each spaced
4.3125 kHz apart. With each tone carrying separate data, the technique
operates as if 256 separate modems were running in parallel. The tone range is
from 0 to 31 for upstream and from 32 to 255 for downstream.
Do not change these settings unless so directed by your ISP.
Figure 66: Tone Settings