| User Interface Features | Voicemail support | 
	| 2.5″ graphical backlit monochrome LCD (132 x 64 pixel resolution) | 
	| Unicode UTF-8 character support | 
	| Reversible deskstand/wallmount | 
	| Feature Keys | 4 context-sensitive “soft” keys | 
	| 2 line keys with bi-color (red/green) LED “Home” feature key | 
	| 4-way navigation key cluster with center “Select” key | 
	| Audio Features | Poly HD Voice delivers lifelike voice quality for each audio path: handset, hands-free speakerphone, and optional headset | 
	Poly Acoustic Clarity™  technology 
providing full duplex conversations, acoustic echo cancellation, and background noise suppression | 
	Poly Acoustic Fence technology 
removes background office noise 
heard by far end when using handset 
or wired headset | 
	| Frequency response — 150 Hz–7 kHz for handset, optional headset, and handsfree speakerphone modes | 
	| Headset and Handset Compatibility | Dedicated RJ-9 headset port | 
	| Compliant with ADA Section 508 Subpart B 1194.23 (all) | 
	| Hearing aid compatible (HAC) handset for magnetic coupling to hearing aids | 
	| Compatible with commercially-available TTY adapter equipment | 
	| Hearing aid compatibility to ITU-T P.370 and TIA 504A standards | 
	| Network and Provisioning  | SIP Protocol Support | 
	| SDP | 
	| IETF SIP (RFC 3261 and companion RFCs) | 
	Two-port gigabit Ethernet switch 
10/100 Base-TX across LAN and PC ports | 
	| UDP | 
	| Power | Built-in auto sensing IEEE 802.3af Power over Ethernet (Class 2) 5.0W (Max) | 
	External universal AC/DC adapter 
(optional), 5 VDC @ 3A (15 W) | 
	| Operating Conditions | Temperature: 0 to 40 °C (+32 to 104 °F) | 
	Relative humidity: 5% to 95% 
(non-condensing) | 
	| Storage Temperature | -40 to +70 °C (-40 to +160 °F) | 
	| Comes With | Console | 
	| Handset with handset cord | 
	| Network (LAN) cable – CAT 5E | 
	| Setup sheet | 
	| Size (W x H x D) | 234 x 231 x 55mm (9.1″ x 9.2″ x 2.2″) | 
	| Weight (Carton) | 0.890kg (1.962 lbs) |