Lines (Direct Numbers)

• Up to 4 lines with up to 24 concurrent calls

Display

• 320 x 160 backlit grayscale graphical LCD • White LED backlight with custom intensity control
• Message Waiting Indicator (MWI) LED 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 headset 1.5
• 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, G.729A (Annex B), and iLBC
• 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 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

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

Protocol Support

• IETF SIP (RFC 3261 and companion RFCs)

Network and Provisioning

• Two-port 10/100 Mbps Ethernet switch
• Manual or dynamic host configuration protocol (DHCP) network setup
• Time and date synchronization using SNTP • FTP/TFTP/HTTP/HTTPS 3 server-based central provisioning for mass deployments.
• Provisioning 4 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
• Syslog
• Local digit map
• Hardware diagnostics
• Status and statistics

Security

• Transport Layer Security (TLS) 3
• Secure Real-time Transport Protocol (SRTP) • Shipped with X.509 certificate installed
• Encrypted configuration files 3
• Digest authentication
• Password login
• Support for URL syntax with password for boot server
• HTTPS secure provisioning 3
• Support for signed software executables 3

Power

• Built-in, auto-sensing IEEE 802.3afPower over Ethernet • External Universal AC adapter (included 48V DC) Approvals • FCC Part 15 (CFR 47) Class B • ICES-003 Class B • EN55022 Class B • CISPR22 Class B • AS/NZS CISPR 22 Class B • VCCI Class B • EN55024 • EN61000-3-2; EN61000-3-3 • ROHS compliant • Anatel • GOST • C-tick • CCC

Safety

• UL/C-UL
• CE Mark
• EN 60950-1
• IEC 60950-1
• AS/NZS 60950