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FUNCTIONS 2 x RJ-45 10/100baseT Network Interfaces with built-in 100M Switch; 1 x FXS port (optional - 2 FXS/FXO ports); 1 x PSTN port; Redial; *Call Transfer; Call Forwarding - Unconditional / No Answer / on Busy; Do Not Disturb; Multiple Proxies; *Call Conferencing; *Music on Hold NETWORKING DHCP / PPPoE / Static IP addressing; Bridge (Switch Mode); NAT; NAT/FW Traversal; TCP/IP; SIP; RTP; RTCP; DNS; FTP; HTTP; DTMF; SNMP SECURITY Encrypted (AES/DES) Voice Communication; Password Protected for Configuration; MD5 for SIP Authentication VOICE QUALITY Support FSK/DTMF CID Standards; VAD; CNG; AEC; *QoS - TOS/DiffServ; Jitter Buffer Codec Support - G.711A & G.711� & G.722 &G.723.1 5.3/6.3 & G.729AB MAINTENANCE Web Browser Administration via Built-in Web Server; Auto-Upgradable via HTTP/ FTP *Features availability dependent on IP telephone system