Phone Features 1 VoIP account, Hotline Call waiting, Call transfer, Call forward Call hold, Mute, Redial, DND 3-way conferencing, Speed dial Direct IP call without SIP proxy Volume control, Ringtone selection Tone scheme, System log export Integrated Voice Response System IP PBX System Integration Music on hold Call park, Call pickup Dial plan, Dial now Voicemail Message Waiting Indication (MWI) Distinctive ringtone Voice Features Wideband codec: G.722 Narrowband codec: G.711u/A, G.726, G.729AB, G.723.1 VAD, CNG, PLC, AJB, AGC Network Features SIP v1 (RFC2543), v2 (RFC3261) NAT Traversal: STUN mode DTMF: In-band, out-of band (RFC2833) and SIP INFO Proxy mode and peer-to-peer SIP link mode IP Assignment: Static/DHCP TFTP/DHCP client Telnet/HTTP server DNS client Management Built-in HTTP web server Configuration: browser/phone/auto-provision/IVR Auto provision via TFTP/FTP/HTTP/PnP Auto provision for firmware, configuration, ringtone etc. Security QoS: IEEE 802.1p/q tagging (VLAN), Layer 3ToS Digest authentication using MD5/MD5-sess Secure configuration file via AES encryption Admin/user configuration mode Physical Features TI TITAN chipset 20 keys including 2 programmable keys 4 feature keys (Transfer/Hold/Mute/Redial) Phone label 1xdual-color LED 1xRJ45 10/100M Ethernet port Desktop with footstand (detachable), Wall-mountable Power adapter: AC 100~240V input and DC 5V/1.2A Output Power over Ethernet (IEEE 802.3af class 1) optional Operating humidity: 10~95% Storage temperature: up to 60°C