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Tone Settings 

 

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 instructed by your ISP. 

 

 

 

Port Mapping 

 

Port mapping is a feature that allows you to open ports to allow 

certain Internet applications on the WAN side to pass through the 
firewall and enter your LAN.  To use this feature, mapping groups 

need to be created.  To do this, follow the below instructions— 

 

1.   Click on the Add button as displayed below. 

 

 
ASUS 4-Port Wireless Ethernet Router 
User Manual 

40

 

Version 1.0 

Document #:  BD-AU0014-10