Support Protocol SIP 2.0 (RFC 3261), TCP / UDP / IP, RTP / RTCP, HTTP, ICMP, ARP / RARP,

DNS, DHCP (client and server), NTP, PPPoE, STUN, TFTP, etc.;

Built-in routing capabilities to support NAT, DMZ port forwarding;

Through the escape port, PSTN network can initiate the call;

High-quality voice quality;

Supports multiple codecs, including G.711 (a law and u law), G.723.1 (5.3K/6.3K), G.726

(40K/32K/24K/16K), G.728, G.729A / B and LBC;

Support caller display, prohibited; call waiting, to keep; call forwarding; call forwarding; support the band-band DTMF signals;

Support for custom dialing rules;

T.30 and T.38 fax support means;

Support VAD (Voice Activity Detection), CNG (Comfort Noise), G.168 (echo suppression), and AGC (automatic gain control);

Support Layer 2 802.1Q VLAN, 802.1p and Layer 3 QoS (ToS, DiffServ, MPLS);

Support NAT through;

Support TFTP or HTTP configuration;

Supported by a software upgrade TFTP or HTTP;

Product design beautiful, compact;

Specifications

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