| 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) |