1wan 1fxs voip ata:GW120

Support SIP2.0,TCP/IP,RTP/RTCP,HTTP,ICMP,ARP,DHCP,NTP/SNTP,TETP protocols Support STUN and symmetric RTP for NAT Interoperable with various 3rd party SIP end user device , Proxy / Registrar / Server , and gateway products. Advanced 32bit embed MCU + DSP technology to ensure superior audio quality. Advanced adaptive jitter buffer control, packet delay and loss concealment technology Support popular vocoders including G.723, G.729A/B, G.711(a-law and u-law), G.726 Line Echo Cancellation?G.168 Support standard voice feature such as Caller ID Display or Block, Call Waiting, Hold, Transfer, Forward, in-band and out-of-band DTMF, Dial Plans CNG (Comfort noise generation) Support Silence Suppression, VAD(Voice Activity Detection), CNG(Comfort Noise Generation), Line Echo Cancellation(G.168), and AGC(Automatic Gain Control) LAN Interface?10Base-T RJ11 interface:1 RJ11 for telephone Universal Switching Power Adaptor: Input AC 220V/110V,Output DC 5V,1000mA Unit Dimensions?110mm × 100 mm × 30mm (4.7in × 4.1in × 1.6 in) Box Dimensions?110mm × 100mm × 66mm (4.7in × 4.1in × 3.0in) Weight:0.4Kg