. Two-way RS422/485 serial data channel for PTZ or other data

. 3 contact closure inputs for alarm/telemetry connections

. Each MPEG-2 encoder is able to simultaneously stream two separate copies of the video at different frame rates

. Transmit a few pictures per seconds for recording and the other can transmit at 25/30 fps for live viewing

. Web-based interface of the C-23 offers intuitive access for configuration and control