VoIP Gateway one fxs ATA

Product Characteristics Supports SIP2.0 (RFC3261), TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP, NTP, STUN, and TFTP etc; Use the DSP CNOS chip to keep a wonderful audio-quality,Jitter control and packet loss concealment technology; Supports kinds of voice codes, including G.711 (a-law and u-law) G.723.1 (5.3K/6.3K) G.726 (40K/32K/24K/16K), G.729A/B, and iLBC; Supports incoming call on show, restricting, and holding, disconnection, call transfer, call divert, DTMF, dialing plan, etc; Supports conference call; Supports NAT auto- penetrating, no need to modify the setting of the NAT; Supports passing through and T38 fax, voice restrain and jerquers, CNG, echo restrains (G.168), AGC; Supports remote upgrade and upgrade configuration function; Supports layer 2(802.1Q VLAN, 802.1p) and layer 3 (QoS, DiffServ, ToS); Supports SIP encrypts mode, avoid force-out; Supports upgrading encrypts configuration files by HTTP; Supports configuration files by inside IVR equipment, Web browser, HTTP Center Server; Supports the volume adjustment of gateway;