Basic  Call  Features 
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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. 
The line key LED flashes green. The LCD screen indicates that the call is on hold. 
 
Note 
To resume a held call: 
1.  Press            or the Resume soft key. 
Multiple Calls on Hold: 
If multiple calls are placed on hold, do one of the following: 
-  Press          or        to switch between the calls, and then press the Resume soft key to 
retrieve the desired call. 
-  Press the corresponding line key to retrieve the call. 
If more than two calls are on hold, a numbered prompt appears on the LCD screen, for example 
“2/4”, indicating that this is the second call out of four calls. 
You can also mute the microphone when the IP phone is ringing. 
The phone will beep softly every 30 seconds to remind you that you still have a call on hold. The 
phone ignores engaged audio device (handset or headset) and switches to Speakerphone to play 
the hold tone by default. The Speakerphone key will light up for 1 second.