... SOC clip,Linux system, built-in dongle2. Video: D1-H264 coding, audio: G711A coding, tunable3. Support ADSL PPPOE, ... InternalMax. resolutionD1:720*576(PAL),720*480(NTSC)Video compression,OSDH.264,support superposition of words/time on ... tunable AudioInput1 route RCA, microphone/lime input, mono audio channelOutput1route RCA output, mono audio channelParameterSampling frequency: 8K HZ,bit wide: 16 ...