Double FXS ports Voip gateway
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digital audio processor
fxs voip gateway
Supports SIP 2.0 (RFC3261) , 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.