18 (22)3.3 Unified Communications3.3.1 Video Conference CollaborationThe S850i conference phone is equipped with balanced analog audio input/output connections facilitatingeasy integration with video conferencing systems such as the Aastra BluStar for Conference Roomsolution. This allows the S850i microphones and speaker to be used for video calls and providesexcellent acoustic echo cancellation and noise control for your video calls.3.3.2 Integration with PC ApplicationsPC applications, including the Aastra BluStar for PC, can be integrated with the S850i via the audioinput/output connections (optional USB connector kit required).