1.1. Hardware ADM5120 MIPS CPU working 175MHz 8MB SDRAM 2MB Flash Memory Five RJ-45 10/100baseT Network Interfaces with Built-in-5-port 10/100M Switch WAN: 1*RJ-45, 10/100Mbps autosensing LAN: 4*RJ-45, 10/100Mbps autosensing 1.2. Functions Status Indication ?ower & Line Status & Networking Status Call Transfer -Attended & Blind Call Forwarding -Unconditional & No Answer & on Busy Shard Lines Multiple Lines Multiple Proxies Music on Hold Backup Setting Provision Dialplan Web based configuration 3-party conference 1.3. Networking DHCP- Dynamic Host Configuration Protocol PPPoE-Point-to-Point Protocol over Ethernet Bridge (Switch Mode) NAT - Network Address Translation NAT/FW Traversal TCP/IP - Transmission Control Protocol/Internet Protocol SIP - Session Initiation Protocol RTP - Real-time Transport Protocol RTCP - Real-time Transport Control Protocol DNS - Domain Name Service FTP - File Transfer Protocol HTTP - Hyper Text Transfer Protocol DTMF - Dual Tone Multi-Frequency SNMP - Simple Network Management Protocol PSTN - Public Switched Telephone Network VLAN - Virtual Local Area Networks 1.4. Security Password Protected for Configuration MD5 for SIP Authentication 1.5. Voice Quality VAD- Voice Activity Detection CNG- Comfort-Noise Generation AEC- Acoustic Echo Chancellor QoS- Quality of Service Jitter Buffer Codec Support - G.711 & GSM 6.10 & G.729 & iLBC 1.6. Maintenance and Provisioning Web Browser Administration via Built-in Web Server Provisioning via FTP/HTTP Upgradable via HTTP 1.7. Environment Operating Temperature - 0 to 50? (32?o 122?F) Storage Temperature - -10?o 60? (-14?o 140 ?) Relative Humidity - 10% to 90%, Non-condensing 1.8. Power Power Adapter -Input 100-230V, Output 12V DC, 500mA 1.9. REGULATORY COMPLIANCE Safety North America Listed, cULus or cCSAus 60950-1 EU EN 60950-1 Global IEC 60950-1 EMC FCC Part 15 Class B EU EN55022 Class B EN55024 Environmental RoHS