Avaya IX Workplace is a Software Phone (Softphone) that allows users to enjoy the functionality of a desk phone from their computer or mobile device. See the graphic below that details the features you can utilize while in an active call in Workplace.
Descriptions:
1. Ends the current call.
2. Switches the call from a voice call to a video call (if you have a webcam enabled).
3. Opens the keypad for use during the call.
4. Puts the call on hold.
5. Opens the call menu for additional features such as Transfer Call, Add Someone to Call, etc., and to see the Call Statistics.
6. Mutes your Microphone.