... the barrier, while placed on the vehicle, for mobile transmission, audio, video,and GPS data can be separate connect to the ... . code2. H.264 VBR, CBR compression 3. Compound packet,video,audio, GPS, Vehicle Speed ,PTZ and alarm in and outVideo input ... SD , HDD optionRecord mode: Manual , alarm ,timed Audio intercom : One channel BNC Two-way intercom, aideo code G.72X, bit code 8kbpsNetwork Protocal ...