Specifications of IAD 2 FXS 4-port IP voice gateway, 1. SIP protocol,H323 protocol 2. Physical Size 150mm (L) * 98mm (W) * 30mm (H) 3. Power supply AC/DC power adapter, 12V DC 4. DC input: 12V DC/0.8A 5. Power consumption < 10W 6. Weight About 0.5 kg 7. Reliability System availability > 99.999%, MTBF > 100,000 hours, MTTR < 5 min 8. Ambient requirements 9. Working temperature 0' C ~ 50' C 10. Storage temperature -10' C ~ 50' C 11. Relative humidity 5% ~ 95%, non-condensing 12. Technical Specifications for the interface attribute gateway Supporting MGCP call control protocol Mute processing/four wave processing RTP/RTCP voice channel 13. Voice compression algorithm G.729, G.723 and G.726 14. Analog voice port (FXS), 4 ports 15. Signal format: DTMF 16. Echo suppression: G.165/G.168 17. DTMF signal detection/generation 18. Compatible to the Internet protocols, such as TCP/IP, UDP, ARP, TFTP and ICMP 19. Supporting SNMP Version II Compatible to IEEE 802.3 10BASE-TX Ethernet Compatible to IEEE 802.3u 100BASE-TX fast Ethernet