Support kinds of voice coding, including G.711 (alaw and u-law) G.723.1 (5.3K/6.3K) G.726 (40K/32K/24K/16K), G.729A/B, and iLBC;
Supports SIP 2.0RFC3261, TCP/UDP/IP, RTP/RTCP, HTTP,ICMP, ARP/RARP,DNS,DHCP, NTP, PPPoE, STUN,TFTP, etc
Supports inside Router/NAT, gateway and DMZ port forwarding
The powerful DSP digital audio processor to keep a wonderful audio-quality; Control the audio flutter and concealment technology anti-lost message.
Supports G.711 (alaw and u-law), G.723.1 (5.3K/6.3K), G.726 (40K/32K/24K/16K), G.729A/B and iLBC..
Supports standard voice features such as Caller ID Display or Block, Call Waiting, Hold, Transfer Forward, FLASH, in-band and out-of-band DTMF, Dial Plans.
Supports three way call
Supports passing through and T.38 fax mode.
Supports silence suppression and check VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)
Supports the normal standards of encryption and certification. (DIGEST using MD5 and MD5-sess)
Support CALL Progress free enactment function
Support the volume adjustment of gateway
Supports layer 2 (802.1Q VLAN, 802.1p) and layer 3 QoS (DiffServ, ToS)
Supports auto-crossing firewall (NAT) but without changeable to setting.
Support configuration files by inside IVR equipment, Web browser, or TFTP and HTTP Central Server ;
Support SIP encrypts mode, avoid force-out
Support upgrading and encryption to the configuration files by TFTP or HTTP;
Microminiaturize and legerity design (size as a wallet), convenience for carrying.