| 摘要 |
<p>At a video-telephony station control signals are generated e.g. by a mouse (104) or keyboard (103) and are sent to a remote audio-video exchange (AVX) together with video signals from a camera (105) and telephony traffic from a microphone (107) or telephone handset (108) for example. The AVX includes a control device, e.g. a microcontroller (116), which responds to the control signals to control telephony and video switching networks (117 and 118) to ensure parallel routing of the audio and video traffic.</p> |
