When an incoming call is received, you can either answer or decline the call by clicking the appropriate option in the incoming call alert.
What do you want to do?
Answer a call
To answer an incoming call, do one of the following:
Click anywhere inside of the incoming call alert that appears in the lower-right corner of your screen.
If Microsoft Lync Online communications software is set up to use your desk phone, pick up the receiver.
Answer a call during an IM conversation
You may be having an instant messaging (IM) conversation with someone, and they decide to add audio by calling you.
In the conversation window, click Accept call.
Answer a call with an instant message
There are times when it isn’t convenient to accept a voice call, even though you want to talk to the caller. For example, you may be in an unscheduled meeting with someone in your office. If you have voice mail, letting the phone ring will send the call to voice mail. But you can also answer the call with an instant message, perhaps to indicate that you’ll call back or be available later in the day.
In the incoming call alert, click Redirect, and then click Reply with Instant Message.
Type your message, and then press Enter.
Decline a call
If you don’t want to answer an incoming call, you can choose to decline it.
In the incoming call alert, click Decline.