Voip gateway Product characteristics: 1. Standard sip 2. 0 terminal product, powerful applicability, and best for global popularizing; support sip 2. 0, tcp / udp / ip, rtp / rtcp, icmp, arp / rarp, ntp, pppoe, tftp, http, etc; support g. 711 (alaw and u-law) , g. 723. 1 (5. 3k / 6. 3k) , g. 723 (40k / 32k / 24k / 16k) , g. 728, g. 729a / b, ilbc; 2. The powerful dsp digital audio processor to keep a wonderful audio-quality; inside dns, router, nat, dmz, the gateway and dhcp (the client end and the server end) ; jitter control adn packet loss concealment technology; 3. Support incoming call on show, restricting, and holding, disconnection, call transfer, call divert, dialing project, etc. Support conference call; 4. Supports vad, cng, agc, the echo eliminates (g. 168) and the static sound suppression; 5. Support layer 2 (802. 1q vlan, 802. 1p) and layer 3 (qos, , tos diffserv, mpls) 6. Powerful long-distance tftp or http manages; to dispose through the browser or the voice hint; 7. Nat automatic penetration; 8. Support passing through and t. 38 fax; 9. Good for the environment, according to the international electromagnetism radicalizations standard; 10. Select high quality material, original electrocircuit design, and no electric current noise, work steadily; 11. Porcelain and legerity design, let you feel the full-bodied appetency of the product besides expediency schlepping. Ata (sip2. 0) yes Router / bridge / dhcp yes Ethernet port 1wan / 1lan (rj45) Fxs 1fxs Fxo pstn pass-through Exit yes Weight 0. 38kg Active status temperature 0~40 Power source adapter ac in: 100v-240v dc out: + 9v / 600ma Use power: