Basic  Call  Features 
115 
1.  Press OK to redial the number. 
Note 
Call Mute 
You can mute the microphone during an active call so that the other party cannot hear you. You 
can also mute the microphone while dialing or ringing so that the other party cannot hear you 
when the call is set up. It helps prevent the other party from hearing the informal discussion 
when auto answer is enabled on his/her phone. 
Call mute applies to all modes (Handset, Headset and Speakerphone). 
Keep Mute 
Keep mute feature enables you to make the mute state of your phone persist across calls. When 
keep mute is enabled and you press the MUTE key, the phone stays in the mute state until you 
unmute the microphone or until the phone restarts. When you mute the phone in an idle state 
or initiate a new call with mute on, the mute key LED glows red on all IP phones, and the mute 
icon appears on the Idle screen of all IP phones. 
 
Note 
Muting and Unmuting a Call 
Procedure: 
1.  Press the MUTE key during an active call. 
   
Call completion is not available on all servers. For more information, contact your system 
administrator. 
Keep Mute should be pre-configured by your system administrator.