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 Enterprise HD IP Phone---Gigabit Color IP Phone UC842  UC842 is an innovative enterprise-level Color IP Phone that features 4 Line keys, 3.5” TFT-LCD with 480*320 pixel. It supports up to 5-way conference. UC842 is optimized for executive use for major decision makers, administrative assistants and those working with bandwidth-intensive application on collocated PCs. Line keys could be also configured as IP PBX features like BLF, SCA, Intercom, Call Pickup, Call Park and many other features. The high-resolution TFT-LCD and HD Voice bring you the lifelike visual and hearing experience. Feature  - 3.5”TFT-LCD, 480 x 320 pixel, 262K colors
  -  Dual-port Gigabit Ethernet ports
  -  3 VoIP accounts
  -  Multi-language
  -  37 keys including 4 Line keys
  -  Support Power over Ethernet(PoE)
  -  Support Auto-provision via TFTP / FTP / HTTP /HTTPS
      Physical Feature  - 3.5”TFT-LCD, 480 x 320 pixel, 262K colors
 -  Ethernet: Dual-port Gigabit Ethernet ports
 -  Keys: 37 keys including 4 programmable keys
 -  WAN Port: 10/100/1000 RJ-45 for Internet
 - LAN Port: 10/100/1000 RJ-45 for PC
  -  Handset: 1 RJ9(4P4C)
  -  Headset: 1 RJ9(4P4C)
 - CPU: 600M
 -  Adapter output: 5V/1.2A
 - Adapter input: 100-240V
 - Power consumption: standby - 2.6W / working - 2.8W
  -  Power over Ethernet(PoE): IEEE 802.3af (Optional)
 -  Operation temperature: -10 ~ 50℃
 - Relative Humidity: 10 ~ 95%
 - Weight - Phone: 0.72kg
 - Dimension: 240*210*120mm
   VoIP Protocol  - SIPv2, SDP(RFC 2327), RTP(RFC 1889,1890), RTCP
 -  RFC 2833 X-NSE Tone Events for SIP/RTP, AVT Tone
 -  Events for SIP/RTP
     Voice Codecs  - HD wideband codec:
 -  G.722. HD Codec, HD speaker, HD handset
 -  Full-duplex speakerphone with AEC
 -  G.711 µ-law/A-law, G.723.1, G.726, G.729A/B.
 -  DTMF(In-Band, RFC2833, SIP Info)
 -  Acoustic Echo Cancelation(AEC),
 -  Acoustic Gain Control(AGC)
 -  Voice Activity Detection(VAD), Comfort Noise insertion
     Security  - HTTPS Server/Client
 -  Transport Layer Security (TLS)
 -  SRTP (RFC3711), SIPS
 -  VLAN QoS (802.1pq)
     Telephone Interfaces  - 3 VoIP Accounts
 -  Menu-driven user interface, XML Idle Screen, Theme,
 -  Screen Sleep
 -  Call hold, Call waiting, Call forward, Call return,
 -  Redial,Call transfer
 -  Caller ID display, DND, Auto-answer, 5-Way Conference
 -  Mute, Speed dial, SMS, Voicemail, Message Waiting
 -  Indication (MWI) LED, Call history
 -  BLF/BLA
 -  Hot-desking, Tone scheme, Volume control
 -  Ring tone selection/Import/Delete
 -  Broad and Deep Interoperability
 -  Soft keys programmable
 -  Phonebook, Black list XML/LDAP phonebook
     Network Protocol  - TCP, UDP, ICMP, RARP, ARP, DNS, NTP,SNTP, STUN, UPnP,SNMP
 -  Static/DHCP/PPPoE
 -  TFTP/DHCP/PPPoE client
 -  HTTP/HTTPS server
     QoS  - Layer 2(802.1Q, 802.1P) QoS
 -  Layer 3 (ToS, DiffServ, MPLS) QoS
      
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