IAD2000SR voice gateway is a multi-function voice/fax/multimedia terminal. It supports standard SIP, PPPoE, DHCP, SNMP, RTP, and RTCP protocols and supports multiple network access means (ADSL, Cable Modem). It is able to provide operators and virtual operators with highly cost-effective VOIP solutions such as IP telephone super markets and enterprise branches. Voice features: 1) Codec: G.711A/u, G.723.1 high/low, G.726, G.729 2) G.168 echo cancel 3) VAD 4) DTMF Relay SIP features: 1) Standard SIP protocol 2) NAT, STUN 3) Free peer to peer SIP call Networks features: 1) Basic NAT and NAPT 2) PPPoE for ADSL 3) SNTP 4) DHCP server on LAN Maintenance and management: 1) HTTP WEB manager 2) HTTP/TFTP: upgrade firmware 3) Adjustable user password and super password 4) IVR for network setting by handset 5) SNMP Call Control features: 1) Flexible Dial Map 2) End with # 3) Dial Map Table 4) Dial with time out Interfaces: 1) One 10/100 Base T RJ-45 for WAN 2) One 10/100 Base T RJ-45 for PC 3) Two RJ-11 interfaces for telephone