The blue OfficeLink call screen provides access to the following features during an active call:
mute - Prevents the other party from hearing your voice and any background noise.
dialpad - Enter a phone number using the dialpad.
speaker - Play audio using the speaker on your mobile device.
hold - Place the caller on hold.
transfer - Transfer an active call to one of your contacts or another phone number.
park - Place a call on hold and retrieve the call yourself or have a coworker pick up the call.
end call - Tap the red phone icon to end the call.
chat - Tap the chat icon in the top-right corner of the call screen (if caller's phone supports chat).
back - Tap the back arrow in the top-left corner of the call screen to navigate back to the previous screen.