Place of Origin
Hunan, China
Network Protocol
SIP 2.0 (RFC 3261), FTP, HTTP, DHCP, TCP/IP, UDP, ARP, ICMP, IGMP
Audio Codec
G.711 A-law, G.711 μ-law, G.729, PCM/L16
S/N (Signal-to-Noise) Ratio
≥86dB
Audio Sampling & Bit Rate
8kHz-44.1kHz, 16bit, 8kbps-320kbps
Frequency Response
50Hz-20kHz