ICP DAS USA SI-002 Quick Start Quide page 8

Step 4: Answer call
Press "Answer with video" button of MicroSIP to answer call.
At this time, the PC will show local video and remote video and hear
voice from SI-002, it means the connection between PC and SI-002
module is established.
SI-002 Quick Start (Version 1.00, Jun/2016) PAGE: 8