Audio Bit Rate-U: 64 Kbps (G.711 ulaw)/64 Kbps (G.711 alaw)/16 Kbps (G.722.1)/16 Kbps (G.726)/32 to 160 Kbps (MP2L2)/16 to 64 Kbps (AAC-LC)
Audio Sampling Rate-U: 8 kHz/16 kHz
Environment Noise Filtering-U: Yes
Network
SecurityPassword protection, complicated password, watermark, basic and digest authentication for HTTP, WSSE and digest authentication for Open Network Video Interface, security audit log, host authentication (MAC address)
Simultaneous Live ViewUp to 6 channels
APIOpen Network Video Interface (Profile S, Profile T, Profile G (only -U model supports)),ISAPI,SDK