The Yealink T29G is a gigabit VoIP phone with a 4.3" 480 x 272 -pixel color display with HD voice and the ability to handle up to 16 SIP accounts. It has boasts features such as power over ethernet support (PoE), up to 16 SIP accounts and wired as well as wireless headset support through EHS capabilities. Features: Dual-port Gigabit Ethernet Yealink Optima HD Voice Supported Full-duplex hands-free speakerphone EHS Support for Wireless Headsets 16 VoIP accounts Wall mountable 4.3" 480 x 272-pixel color display with backlight Built-in a USB port, support Bluetooth headset (Through USB Dongle) Supports expansion modules Stand with 2 adjustable angles Specification Audio Features HD voice: HD handset, HD speaker Codecs: G.722, G.711(A/μ), G.723, G.729AB, G.726, iLBC DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO Full-duplex hands-free speakerphone with AEC VAD, CNG, AEC, PLC, AJB, AGC Directory Local phonebook up to 1000 entries Black list XML/LDAP remote phonebook Intelligent search method Phonebook search/import/export Call history: dialed/received/missed/forwarded Feature keys 10 line keys with LED 10 line keys can be programmed up to 27 various features (3-page view) 8 features keys: message, headset, conference, hold, mute, transfer, redial, hands-free speakerphone 4 context-sensitive “soft” keys 6 navigation keys 2 Volume control keys Illuminated message key Illuminated headset key Package Features Qty/CTN: 5 PCS N.W/CTN: G.W/CTN: Giftbox size: 274mm*258mm*142mm Carton Meas: 732mm*286mm*266mm