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Swap
When the first call is held, and you are answering a second call:
You can press the Send key to select “Swap” to switch them.
You can press the End key to end the current call, after you end a call,
you can press the Send key to select “Retrieve single call” to retrieve the
first call.
You can press the Send key to select “End all calls” to end the all calls.
Mute
This function can turn off or on the phone's microphone and other
microphone connected. The “Mute” function can prevent the person
whom you are talking to from hearing your voice.
During a call, press the Send key to enter the Option list to select “Mute”
and turn it on. You can press the Send key again to select “Mute” and
turn if off.
Hands-Free
This function can turn off or on the phone's loudspeaker. During a call,
press the Send key to enter the potion list, select “Loudspeaker on”. To
turn on the loudspeaker. When the loudspeaker is on, press the Send key
again to enter the option list and select “Loudspeaker off” to turn off the
loudspeaker, and go back to the normal talking status.
Conference
If the network supports the function, you can make a conference call.
When you are answering a call and another call is held, you can press the
Send key to enter the option list to select “Conference” to build a
conference call. When the conference call is on, you can press the Send
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