Import Voip Gateway — Buy in Bulk from Supplier in China

Voip gateway 1, Not need to register SIP PROXY, supports Point-to-Point communication (call the other partyí»s IP address directly); 2, Not need to connect any network cable, supports mutual communication between two FXS ports; 3, Three SIP PROXY and accounts registered at the same time for each FXS port (so total is 6 user names), one SIP PROXY offline, other one can replace it to work timely; 4, Built-in Router;

5. With reverse-polarity signal, billing function supported;

6. Support Voice-announcing IP address and operating by hand or by web page; 7, Support SIP 2.0 (RFC3261), TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP (both client and server), NTP, PPPoE, STUN, TFTP; 8, Powerful digital signal processing (DSP) to ensure superb audio quality; 9, Advanced adaptive jitter control and packet loss concealment technology; 10, Support various vocoders including G.711 (a-law and u-law), G.723.1 (5.3K/6.3K), G.726, G.729A/B and iLBC; 11, Support Caller ID/Name display or block, Hold, Call Waiting, Flash, Call Transfer (blind/consultative ); 12, Call forward, in-band DTMF, Dial Plans; 13, Support call waiting caller ID; 14, Support fax pass through and T.38 (pending); 15, Support silence suppression, VAD (Voice Activity Detection), CNG (Comfort Nois Generation); 16, Line echo cancellation (G.168), and AGC (Automatic Gain Control); 17, Support standard encryption and autherntication (DIGEST using Md5 andMD5-sess); 18, Support for Layer 2 (802.1q VLAN, 82.1P) and Layer 3 Qos (Tos, Diffserv, MPLS); 19, Support automated NAT traversal without manual manipulaton of firewall/NAT; 20, Support device configuration via built-in IVR, web browser or downloading encrypted configuration file through TFTP or HTTP; 21, Support firmware upgrade via TFTP or HTTP; 22, Ultra compact (wallet size) and lightweight design, great companion for travelers; 23, Desk/Wall mounts. Interface: WAN: 1 unit, connect to XDSL/Cable Modem or Network Switch or Router LAN: 1 unit, connect to PC or other network equipment FXS: 2 units, connect to Normal phone, DECT/Cordless phone, Electrograph, Switch etc Power: 1unit, connect to Power adapter: 12V DC---1A Products