... ,SMTP,FTP,SIP,DDNS, DNSEthernet Port10/100Mbps RJ45Built-in Web ServerSupport WEB browser,remote config/update,replay,recordMax.User5 real-time users ... (Optional),USB,SD card,RS232,RS485 interfaceSDKSDK available for application development and system integrationOS RequirementMicrosoft Windows 2000/2003/XP/VisaBrowserIE 6 ...