Rich Phone Features - 6 SIP account profiles ; Support Caller ID display or block ; Call waiting, hold, mute, transfer, forward, etc. ; 3-way full duplex hands-free conferencing ; Built in buttons - hold, speakerphone, transfer, conference, headset, mute, messages, volume ; 4 softkey buttons.

Voice Quality - IR307 is built on a full-duplex hands-free high-definition voice engine. The GIPS® voice engine processes Net Package Jitter Buffer, AEC and many voice codecs and supports high quality full-duplex hands-free calls.

Performance & Stability - IR307's SIP Stack and the 400MHz Analog Devices BlackFin® BF531 Processor provide efficient performance with low CPU & memory resource requirement. Platform expandibility enables users to customize and add innovative applications to the phone.

Call Control Basic Call (Voice) Caller ID Display Redial , Speed Dial, Hotline Call From History & Address Book Call Hold & Consultation Hold Call Transfer (Blind & Attend) Call Waiting Call Forward (On Busy / No Answer, Unconditional, Offline) 3-Way Talk Automatic Accept Call / Do Not Disturb Other Functions Mute, Volume Adjust & Ring Tone Profile Management Presence Instant Message DTMF (Inbound / Outbound / SIP-Info) MWI for Voice Mail Call History (Missed, Received & Dialed) Phone Book (LCD Menu & Web) Voice Recording & Voice Mail Session Timer Dial Plan & Speed Key Multi-Account Management Alarm (Once & Repeat) SIP Stack and Call Control Logging Syslog , Telnet, Ping & Trace route Function 4 Softkeys Voice Engine Full Duplex Hands-free Talking Acoustic Echo Cancellation (AEC), Voice Activation Detection (VAD), Comfort Noise Generation (CNG) Volume Adjustment for Ringing, Speaker & Handset Individually Hands-free and Headset Mode Support for G.711 u/a, G.729ab & iLBC Codec Adaptive Jitter Buffers and Packet Loss Concealment 3 Ways Talk Mixing

Physical Specifications H x L x W:108 mm x 210 mm x 185 mm Power Adapter: AC Input 100~240V, 50-60Hz, DC Output 5V, 1.2A Network Interface: IEEE 802.3 10/100 Base-T Power Consumption: 1.8W ~ 2.1W Interface Speed Dial Keys High resolution 64*128 dot LCD Handset and Hands-free Speaker Two 10/100 Base-T Ethernet Ports with Bridge / Router Function Web Management Load Profile and Menu from XML Protocol Features SIP RFC3261 and most RFC Extensions DNS (A, SRV, NAPTR) STUN SNMP v2 or TR069 Network Manual Configuration / DHCP / PPPoE Time and Date Synchronization Using NTP / Register XML-Based Auto-Provision and Auto-Update Support for IEEE802.1p/Q tagging (VLAN) Work on Router / Bridge Mode NAT Keep Alive 3 layers DSCP Interoperability Testing ZTE Soft-switch and IMS Server Ericsson IMS Server Nokia IMS Server Asterisk SIP Server SER SIP Server More than 30 Servers and Terminals...