User Guide for the SIP-T27G IP Phone 
110 
Muting a Call 
To mute a call: 
1.  Press              during an active call. 
The LCD screen indicates that the call is now muted. 
 
To un-mute a call: 
1.  Press            again to un-mute the call. 
Muting While Dialing 
To mute the microphone while dialing: 
1.  Press            on the pre-dialing, dialing or calling screen. 
The call is muted automatically when set up successfully. 
To un-mute the microphone while dialing: 
1.  Press          again on the pre-dialing, dialing or calling screen. 
Note 
Call Hold/Resume 
You can place an active call on hold. Only one active call can be in progress at any time. Other 
calls can be made and received while placing the original call on hold. When you place a call on 
hold, your IP PBX may play music to the other party while waiting. 
To place a call on hold: 
1.  Press            or the Hold soft key during a call. 
   
You can also mute the microphone when the IP phone is ringing. 
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