... .5M,1.75M,2Madjustable (unit:bps)Audio input1linear PWL, impedance:1kΩ)Audio output1channel, BNC(linear PWL, impedance:600Ω)Audio compression standardOggVorbis ... compression code rate 16KbpsSpeech talk input1channel, BNC(linear PWL, impedance:1kΩ)Communication interfaceOne RJ45 10M/100M self-adapting ethernet interface, one ...