AASTRA 4187 Plus for BusinessPhone User Guide EN - Manual (Page 28)

During Calls
BusinessPhone – Dialog 4187 Plus 28
Handsfree Speaking
From handset to handsfree
You have an ongoing conversation via the handset. Â
Press to switch the loudspeaker on.
You are now in the Group Listening mode. d
Replace the handset.
Handsfree conversation.
Note: You can adjust the volume, see section “ Handset,
Loudspeaker and Headset Volume ” on page 70. Д В
Press to end the call.
From handsfree to handset
You have an ongoing handsfree conversation. u
Lift the handset.
Conversation via the handset. Â
Press to switch handsfree speaking on or off.
During handsfree speaking, you are connected to the caller via the
loudspeaker and microphone.
Mute
You have an ongoing conversation. É
Press to switch the microphone on or off.
All microphones – handset, headset and the handsfree microphone
– are deactivated. When the lamp is lit, the caller will not be able to
hear the conversation in your room.