＊VoIP Protocol
・SIP v1 (RFC 2543), v2 (RFC 3261)

＊Interface
・RJ-11 (FXO) port * 1, RJ-45 (WAN) port * 1, RJ-45
(LAN) port * 1
＊Networking
・Interface: 10/100Mbps Fast Ethernet
・IP Assignment: Static IP, DHCP, PPPoE
・Build-in Router: DHCP Server, DMZ, NAT
・NAT Traversal: STUN
・Protocol : TCP/IP, UDP, RTP, RTCP, ICMP, ARP,
RARP, SNTP, TFTP Client, DHCP Client, PPPoE
Client, Telnet, HTTP Server, DNS client

＊Voice Codec(optional) :
・G.711: 64k bit/s (PCM)
・G.723.1: 6.3k / 5.3k bit/s
・G.726: 16k / 24k / 32k / 40k bit/s (ADPCM)
・G.729A: 8k bit/s (CS-ACELP)
・G.729B: adds VAD & CNG to G.729

＊Voice Quality
・VAD: voice activity detection
・CNG: Comfortable noise generator
・LEC: line echo canceller
・Packet loss compensation
・Adaptive jitter buffer

＊DTMF Function
・In-Band DTMF, Out-of Band DTMF, SIP Info

＊Software Upgrade
・HTTP / TFTP / Telnet

＊Security
・HTTP 1.1 Basic / Digest authentication for Web
setup
・MD5 for SIP authentication (RFC2069 / RFC2617)

＊Call Features
・Call Hold, Call Waiting, Call Forward, Call Transfer,
Caller ID, Call Block, 3-way Conference
・Volume adjustment, Speed dial, Phone book, Mute

＊Configuration Management
・Web Browser, Telnet, Keypad
・LCD Display and LED indicators

＊General Information
・Power: Switch Adapter
・Connector: RJ-45 * 2, RJ-11 * 1
・Dimensions: 280×60.6 mm
・Weight: 760g