4 line IP desktop phones with HD voice , Da , Da , Da , 320 x 160 backlit grayscale graphical LCD , White LED backlight with custom intensity control , Message Waiting Indicator (MWI) LED , DTMF tone generation/DTMF event RTP payload , Event logging , QoS Support – IEEE 802.1p/Q tagging (VLAN), Q Layer 3 TOS, and DSCP , Support for signed software executables , Individual volume settings with visual feedback I for each audio path , FTP/TFTP/HTTP/HTTPS server-based central provisioning for mass deployments. , Password login ,  Type 1 compliant with IEEE 1329 full duplex standards , Network and Provisioning : Two-port 10/100 Mbps Ethernet switch , Shipped with X. 509 certificate installed , Compatibility with commercially-available TTY C adapter equipment , Acoustic echo cancellation , Status and statistics , Lines (Direct Numbers) : up to 4 lines with up to 24 concurrent calls , Low-delay audio packet transmission , Syslog , Voice activity detection , Network Address Translation (NAT) support – static , Provisioning server redundancy supported , S upport for URL syntax with password for boot server , Frequency response - 150Hz - 7kHz for handset, F headset1 and hands-free speakerphone modes ,  Manual or dynamic host configuration protocol M (DHCP) network setup , Encrypted configuration files , Audio Features : Polycom HD Voice technology delivers life like voice quality for each audio path - the handset, the hands-free speakerphone, and the headset , Background noise suppression , Security : Transport Layer Security (TLS) , Headset and Hearing Aid Compatibility : Compliant with ADA Section 508 Recommendations: Subpart B 1 194.23 (all) , Adaptive jitter buffers , Local digit map , Comfort noise fill , RTCP support (RFC 1889) , Web portal for individual unit configuration , HTTPS secure provisioning , Codecs: G. 722 (wideband), G. 71 μ/A, G. 729A C 1 (Annex B), and iLBC , Time and date synchronization using SNTP , Digest authentication , Full-duplex hands-free speakerphone , Protocol Support : IETF SIP (RFC 3261 and companion RFCs) , Secure Real-time Transport Protocol (SRTP) , Hearing Aid Compatible (HAC) handset for H magnetic coupling to approved HAC hearing aids , Packet loss concealment , Hardware diagnostics , Remote missed call notification , Local three-way conferencing , Call timer , Flexible line appearance (one or more line keys F 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 , Illuminated hands-free speakerphone key , 2 volume control keys , 6 line keys with bi-color (red/green) LED , Wave file support for call progress tones , Time and date display , Dedicated hold key , Illuminated mute key , 8 feature keys , Feature Keys : 4 context-sensitive soft keys , Unicode UTF-8 character support. Multilingual user U 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 U history (missed, placed, and received) , Other Features : Integration with Microsoft LCS 2005 for I telephone and presence , Illuminated headset key , 6 display/menu navigation keys , 26 dedicated hard keys , Customizable call progress tones - 1000001658


Denumiri similare la Telefon VOIP HP Poly SoundPoint IP 550 2200-12550-122: Poly SoundPoint IP 550 2200 12550 122, PolySoundPointIP550220012550122, PolySoundPointIP5502200-12550-122, Poly SoundPoint IP 550 2200-12550 122

Galerie