• Set Key Touch Tone
The procedure below shows how to set the Key
Touch Tone. Key Touch Tone is a tone generated
when the digit keys are pressed while DT820 is
off-hook.
STEP 1: Display the Menu screen, select Setting.
STEP 2: Select User Setting.
Select an item by one of the following operations.
• Highlight an item by using , and press ,
or OK.
• Press .
STEP 3: Select Talk.
Select an item by one of the following operations.
• Highlight an item by using , and press ,
or OK.
•Press .
STEP 4: Select Key Touch Tone.
Select an item by one of the following operations.
• Highlight an item by using , and press ,
or OK.
•Press .