1fxs VoIP ata with PSTN Passthrough port
Supports SIP 2.0, TCP/UDP/IP, RTP/RTCP, ICMP, ARP/RARP, NTP, PPPoE, TFTP, HTTP, etc
Supports G. 711 (alaw and u-law), G. 723.1 (5.3K/6.3K), G. 726 (40K/32K/24K/16K), G. 728, G. 729A/B and iLBC...
Built-in Router, NAT, Gateway and DMZ port forwarding. Can also be configured to function as a two Ethernet ports bridge (NAT function is disabled)
Powerful digital signal processing (DSP) to ensure superb audio quality; Advanced adaptive jitter control and packet loss concealment technology
Supports standard voice features such as Call keeping, Call Waiting, Hold, Transfer Forward, FLASH; Supports three way conference
Supports VAD, CNG, AGC, the echo cancellation (G. 168) and Silence suppression.
Supports layer 2 (802.1Q VLAN, 802.1p) and layer 3 QoS (ToS, iffServ, MPLS)
Powerful remote management by TFTP or HTTP mode.
To dispose through the browser or the voice hint.
Supports auto-crossing firewall (NAT);
Supports CALL Progress free enactment function.
Supports the volume adjustment of gateway
Supports SIP encrypts mode, avoid force-out
Supports remote upgrade and upgrade configuration function
Supports passing through and T. 38 fax mode.