6-line IP phone with HD Voice , Da , Da , Da , Message Waiting Indicator (MWI) LED , 320 x 160 backlit grayscale graphical LCD , White LED backlight with custom intensity control , Frequency response - 150Hz - 7kHz for handset, F headset1 and hands-free speakerphone modes , Provisioning server redundancy supported , HTTPS secure provisioning , Manual or dynamic host configuration protocol (DHCP) network setup , Digest authentication , Compatibility with commercially-available TTY adapter equipment , Background noise suppression , Secure Real-time Transport Protocol (SRTP) , Headset and Hearing Aid Compatibility : Dedicated RJ-9 headset port : Amplified headsets are recommended , Adaptive jitter buffers , Hardware diagnostics , Up to 47 remote party BLF line monitors , Comfort noise fill , RTCP support (RFC 1889) , Lines (Direct Numbers) : Up to six lines (standalone mode) , Codecs: G. 722 (wideband), G. 71 μ/A, G. 729A 1 (Annex B) and iLBC , Web portal for individual unit configuration , Support for signed software executables , Audio Features : Polycom HD Voice technology delivers life-like voice quality for each audio path - the handset, the hands-free speakerphone, and the headset , Time and date synchronization using SNTP , Password login , Protocol Support: IETF SIP (RFC 3261 and companion RFCs) , Shipped with X. 509 certificate installed , Compliant with ADA Section 508 Recommendations: Subpart B 1 194.23 (all) , Packet loss concealment , Status and statistics , Up to 34 SIP registrations , DTMF tone generation/DTMF event RTP payload , Event logging , Up to 24 concurrent calls , Individual volume settings with visual feedback for each audio path , QoS Support – IEEE 802.1p/Q tagging (VLAN), Layer 3 TOS, and DSCP , Full-duplex hands-free speakerphone : Type 1 compliant with IEEE 1329 full duplex standards , FTP/TFTP/HTTP/HTTPS4 server-based central provisioning for mass deployments , Support for URL syntax with password for boot server , Network and Provisioning : Two-port 10/100 Mbps Ethernet switch , Encrypted configuration files , Hearing Aid Compatible (HAC) handset for magnetic coupling to approved HAC hearing aids , Acoustic echo cancellation , Security : Transport Layer Security (TLS) , SoundPoint IP Expansion Module Support : Supports up to three Expansion Module , Low-delay audio packet transmission , Local digit map , Expansion Module Mode: Up to 48 line keys/appearances , Voice activity detection , Network Address Translation (NAT) support – static , Remote missed call notification , Local three-way conferencing , Call timer , Flexible line appearance (one or more line keys can be assigned for each line extension) , Intercom , One-touch speed dial, redial , Call transfer, hold, divert (forward), pickup , Busy Lamp Field (BLF) , Automatic off-hook call placement , Call waiting , Called, calling, connected party information , Distinctive incoming call treatment/call waiting , Shared call/bridged line appearance , Do not disturb function , 26.5 cm x 15 cm x 19 cm x 6.5 cm , External Universal AC adapter (included 48V DC) , Built-in, auto-sensing IEEE 802.3af Power over Ethernet , Local feature-rich GUI , Dedicated hold key , Illuminated mute key , 8 feature keys , Wave file support for call progress tones , Time and date display , Integration with Microsoft LCS 2005 for telephone and presence: Compatibility with Microsoft Office Communicator and Windows Messenger 5.1 , Illuminated headset key , 6 display/menu navigation keys , Feature Keys : 4 context-sensitive soft keys , 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 , User-configurable contact directory and call history (missed, placed, and received) , Clients Universal Serial Bus (USB) : Full Host ControllerCompliant with OHCI 1.1 specificationSupport for Full-speed and Low-speed peripheralsType-A receptacle interface , Illuminated hands-free speakerphone key , 2 volume control keys , 26 dedicated hard keys :6 line keys with bi-color (red/green) LED , Customizable call progress tones - 1000005934


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