... , audio: G711A coding, tunable3. Support ADSL PPPOE, wireless WIFI, wireless TD-SCDMA/CDMA 1X/EVDO/WCDMA, DNS, DDNS4. ... rate: 32Kbps NetworkInterface1pcRJ45, 10/100M adaptation, 1outlay USB, support WIFI, 3GProtocolTCP/IP, UDP/IP, multicast, HTTP, ICMP, FTP ... video lostCommunicationRS422/RS4851pc, fro PTZ control or serial port transmissionSafetyUser management Built-in dongleSystem resetLong distance ...