| Lines (Directory Numbers) |
- Up to 3 lines with up to 2 concurrent calls per line
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| Display |
- 171 x 73 pixel backlit grayscale graphical LCD
- LED backlight with custom intensity control
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| Feature Keys |
- 4 context-sensitive “soft” keys
- 17 dedicated “hard” keys
- 3 line keys with bi-color (red/green) LED
- 3 feature keys
- 5 display/menu navigation keys
- 2 volume control keys
- Mute, headset and hands-free speakerphone keys
- Dedicated hold key
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| Headset and Hearing Aid Compatibility |
- Dedicated RJ-9 headset port
- Amplified headsets are recommended
- Compliant with ADA Section 508 Recommendations: Subpart B 1194.23 (all)
- Hearing Aid Compatible (HAC) handset for magnetic coupling to approved HAC hearing aids
- Compatible with commercially-available TTY adapter equipment
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| Audio Features |
- Polycom HD Voice technology delivers life-like voice quality for each audio path – the handset, the hands-free speakerphone, and the optional headset
- Full-duplex hands-free speakerphone
- Type 1 compliant with IEEE 1329 full duplex standards
- Frequency response – 150Hz – 7kHz for handset, optional headset1 and hands-free speakerphone modes
- Codecs: G.722 (wideband), G.711 ?/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
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| Call Handling Features |
- 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
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| Other Features |
- Integration with Microsoft LCS 2005 for telephone and presence3
- Compatibility with Microsoft Office Communicator and Windows® Messenger 5.1 Clients
- Enabled for Polycom Productivity Suite
- 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
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| Protocol Support |
- IETF SIP (RFC 3261 and companion RFCs)
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| Network and Provisioning |
- Two-port Ethernet Switch
- 10/100Base-TX across LAN and PC ports
- Manual or dynamic host configuration protocol (DHCP) network setup
- Time and date synchronization using SNTP
- FTP/TFTP/HTTP/HTTPS4 server-based central provisioning for mass deployments
- Provisioning and call server redundancy supported
- Web portal for individual unit configuration
- QoS Support – IEEE 802.1p/Q tagging (VLAN), Layer 3 TOS, and DSCP
- Network Address Translation (NAT) support – static
- RTCP support (RFC 1889)
- Event logging
- Local digit map
- Hardware diagnostics
- Status and statistics
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| Security |
- Transport Layer Security (TLS)
- Encrypted configuration files
- Digest authentication
- Password login
- Support for URL syntax with password for boot server
- HTTPS secure provisioning
- Support for signed software executables
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| Power |
- Built-in, auto-sensing IEEE 802.3af Power over Ethernet (Class 2)
- External Universal AC adapter (24VDC/12W)
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| Size |
- 8.5 x 6 x 6.5 in x 2.5 in
- (21.5 x 15 x 16.5 x 6.5 cm) (W x H x D x T)
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