2) If you are on an active call, click the button to answer it, or to refuse it,
or to forward the incoming call.
3) During a conversation, you can alternate between Headset, Handset and Speaker
phone by pressing the corresponding buttons, picking up the handset or inset the
headset.
Refuse a call
Press to refuse the incoming call directly.
DND
Press to active DND Mode when the phone is idle. The display will show the icon
and further incoming calls will be rejected. Press it again to deactivate DND mode.
During an Active Call
Audio/Video Switch
There are several ways to operate the current audio/video conversation:
1) Shift between audio and video: During a call, click 【Voice Call】or 【Video Call】 to
shift between Voice call and Video call;
2) Close local video: press to close the local video, press it again to reopen the
local video;