Lines (Direct Numbers)
• Up to 4 lines with up to 2 concurrent calls per line

Display
• 320 x 160 backlit grayscale graphical LCD
• White LED backlight with custom intensity control

Feature Keys
• 4 context-sensitive “soft” keys
• 26 dedicated “hard” keys
--6 line keys with bi-color (red/green) LED
--8 feature keys
--6 display/menu navigation keys
--2 volume control keys
--Illuminated mute key
--Illuminated headset key
--Illuminated hands-free speakerphone key
--Dedicated hold key

Headset and Hearing Aid Compatibility
• Compliant with ADA Section 508 Recommendations: Subpart B 1194.23 (all)
• Hearing Aid Compatible (HAC) handset for magnetic coupling to approved HAC hearing aids
• Compatibility with commercially-available TTY adapter equipment

Audio Features
• Polycom HD Voice technology delivers life-like voice quality for each audio path - the handset, the hands-free speakerphone, and the headset1.5
• Full-duplex hands-free speakerphone
--Type 1 compliant with IEEE 1329 full duplex standards
• Frequency response - 150Hz - 7kHz for handset, headset1 and hands-free speakerphone modes
• Codecs: G.722 (wideband), G.711 μ/A, and G.729A (Annex B)
• Individual volume settings with visual feedback for each audio path
• Voice activity detection
• Comfort noise fill
• DTMF tone generation/DTMF event RTP payload
• Low-delay audio packet transmission
• Adaptive jitter buffers
• Packet loss concealment
• Acoustic echo cancellation
• Background noise suppression

Call Handling Features1
• Shared call/bridged line appearance
• Flexible line appearance (one or more line keys can be assigned for each line extension)
• Busy Lamp Field (BLF)
• Distinctive incoming call treatment/call waiting
• Call timer
• Call transfer, hold, divert (forward), pickup
• Called, calling, connected party information
• Local three-way conferencing
• One-touch speed dial, redial
• Call waiting
• Remote missed call notification
• Intercom
• Automatic off-hook call placement
• Do not disturb function

Other Features
• Integration with Microsoft LCS 2005 for telephone and presence
• Local feature-rich GUI
• Time and date display
• User-configurable contact directory and call history (missed, placed, and received)
• Customizable call progress tones
• Wave file support for call progress tones
• Unicode UTF-8 character support. Multilingual user interface encompassing Chinese, Danish, Dutch, English (Canada/US/UK), French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Slovenian, Spanish, Swedish

Enhance your collaboration experience with these complementary products and accessories.

Power Supplies and Adapters:
SoundPoint PoE (Adapter) (Power Over Ethernet)
SoundPoint IP Universal Power Supply (North America Standard 24v 0.5a)

Complementary Products:
Polycom® SoundStation® IP 6000 (Conference Unit)
Polycom® SoundPoint® IP 650 (Executive Telephone)