Single channel D1 video server H.264 compression G.722 audio compression Model NoDS8001-D1Audio Compression StandardISO-MPEG Audio Layer-3Video Stream Bandwidth Usage Average200 kbps(Resolution 352×288 and 25Frames)SupportedResolutionPAL: 704×576,704×288,352×288NTSC: 704×480,704×240,352×240IO and Control InterfaceRS485 Transparent ChannelAudio Input (Optional)BNC Interface, and Microphone Input ...