Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones 
890 
Navigate to: 
http://<phoneIPAddress>/servlet?m=
mod_data&p=settings-voice&q=load 
Details of Configuration Parameter:   
Description: 
Enables or disables the Smart Noise Block feature on the IP phones. 
0-Disabled 
1-Enabled 
Note: It works only if the value of the parameter “voice.tns.enable” is set to 1 (Enabled). It 
is only applicable to CP920 IP phones. 
Web User Interface:   
Settings->Voice->Noise Proof->Smart Noise Block. 
Phone User Interface: 
None 
To configure Smart Noise Block via web user interface: 
1.  Click on Settings->Voice. 
2.  Select the desired value from the pull-down list of Smart Noise Block. 
 
3.  Click Confirm to accept the change. 
DTMF 
DTMF (Dual Tone Multi-frequency), better known as touch-tone, is used for telecommunication