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    Điện Thoại IP Yealink SIP-T27P
      Mã sản phẩm: SIP-T27P | Cập nhật 22:45 02/10/2017

      Điện thoại ip Yealink SIP-T27P

    Audio Features
    > HD voice: HD handset, HD speaker
    > Wideband codec: G.722
    > Narrowband codec: G.711(A/μ), G.729AB,
    G.726, iLBC
    > DTMF: In-band, Out-of-band(RFC 2833) and SIP
    > Full-duplex hands-free speakerphone with AEC



    Phone Features
    > 6 VoIP accounts
    > One-touch speed dial, redial
    > Call forward, call waiting
    > Call transfer, call hold
    > Call return, group listening
    > Mute, auto answer, DND
    > 3-way conference call
    > Direct IP call without SIP proxy
    > Ring tone selection/import/delete
    > Hotline, emergency call
    > Set date time manually or automatically
    > Dial plan
    >XML Browser, 
    >Action URL/URI
    > Integrated Screenshots
    > RTCP-XR


    > Local phonebook up to 1000 entries
    > Black list
    > XML/LDAP remote phonebook
    > Intelligent search method
    > Phonebook search/import/export
    > Call history: dialed/received/missed/forwarded


    IP-PBX Features
    > Busy Lamp Field (BLF)
    > Bridged Line Apperance(BLA)
    > Anonymous call, anonymous call rejection
    > Hot-desking
    > Message Waiting Indicator (MWI)
    > Voice mail
    > Call park, call pickup
    > Intercom, paging, 
    > Music on hold
    > Call recording


    Display and Indicator
    > 3.66" 240x120-pixel graphical LCD with backlight
    > LED for call and message waiting indication
    > Dual-color (red or green) illuminated LEDs for 
    line status information
    > Intuitive user interface with icons and soft keys
    > National language selection
    > Caller ID with name, number


    Feature keys
    > 8 line keys with LED
    > 8 line keys can be programmed up to 21
    various features (3-page view)
    > 8 features keys: message, headset, conference, mute, 
    hold, transfer, redial, hands-free speakerphone
    > 4 context-sensitive “soft” keys
    > 6 navigation keys
    > 2 volume control keys
    > Illuminated message key
    > Illuminated headset key


    > 1xRJ9 (4P4C) handset port
    > 1xRJ9 (4P4C) headset port 
    > 1XRJ12 (6P6C) EHS port

    > 1XRJ12 (6P6C) EXT port: 
    Supports up to 6 Expansion Modules
    >Power over Ethernet (IEEE 802.3af), Class 2


    Other Physical Features

    > Stand with 2 adjustable angles 
    > Wall mountable (optional)
    > External universal AC adapter (optional):
    AC 100~240V input and DC 5V/1.2A output
    > Power consumption (PSU): 1.17~3.32W
    > Power consumption (PoE): 1.60~5.94W
    > Dimension(W*D*H*T):
    265mm x 210mm x 170.5mm x 53.5mm
    > Operating humidity: 10-95%
    > Operating temperature: -10~50°C


    Package Features
    > Qty/CTN: 5 PCS
    > N.W/CTN: 
    > G.W/CTN: 
    > Giftbox size: 300mm x 225mm x 118mm
    > Carton Meas: 610mm x 310mm x 238mm


    > Configuration: browser/phone/auto-provision
    > Auto provision via FTP/TFTP/HTTP/HTTPS
    for mass deploy
    > Auto-provision with PnP
    > Zero-sp-touch TR-069
    > Reset to factory, reboot
    > Package tracing export, system log


    Network and Security
    > SIP v1 (RFC2543), v2 (RFC3261)
    > NAT transverse: STUN mode
    > Proxy mode and peer-to-peer SIP link mode
    > IP assignment: static/DHCP
    > HTTP/HTTPS web server
    > Time and date synchronization using SNTP
    > UDP/TCP/DNS-SRV(RFC 3263)
    > QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS
    > SRTP for voice 
    > Transport Layer Security (TLS)
    > HTTPS certificate manager
    > AES encryption for configuration file
    > Digest authentication using MD5/MD5-sess
    > OpenVPN, IEEE802.1X
    > IPv6

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