3.5.11 Using Mute 
With Mute enabled, you can hear other parties on a call but they cannot hear you. You can use 
mute in conjunction with the handset, speakerphone, or a headset. 
Press C button, a MUTE icon   will appear at the top left of the 
screen 
Press C button again, the MUTE icon disappears 
3.5.12 Do Not Disturb 
You can use the Do Not Disturb (DND) feature to block incoming calls on your phone with a 
busy tone (can also be set to voice mail or other extension numbers etc.). 
-- 1) Press DND; 
-- 2) All enabled lines on the phone change to  status and the icon 
is  . 
Enable DND on a 
single line 
Press MENU or OK button > "Function setting" > "DND" > (select 
line) "Enable" 
-- Global DND enabled, press   to disable global DND; 
-- Line DND enabled, press twice  , 
- or press MENU or OK button > "Function setting" > "DND" > (select 
line) "Disable" 
3.5.13 3-way Conference 
You can enable a three-party conference: during the conversation, the three phone parties can 
communicate with every other party. 
Invite the transfer 
recipient into a 
conference 
-- 1) When the transfer recipient answers the call, press the 
CONFERENCE button or "CONF" on your phone; 
-- 2) Then the held one, the transfer recipient and yourself will be 
entered into a conference, and the LCD will display 
 status. 
Invite the third party 
into a conference in an 
active call 
-- 1) Press the "CONFERENCE" button or "CONF" in an active call; 
-- 2) Enter the third party’s number; 
-- 3) After connection with the third party, press the "CONFERENCE" 
button or "CONF" again