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Điện thoại IP Yealink SIP-T27G

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> Yealink Optima HD voice
> 3.66″ 240×120-pixel graphical LCD with backlight
> Gigabit
> USB 2.0
> Opus* codec support
> Up to 6 SIP accounts
> Paper label free design
> PoE support
> Headset, EHS support
> Supports expansion modules

Audio Features
> HD voice: HD handset, HD speaker
> Wideband codec: AMR-WB (optional), Opus*, G.722
> Narrowband codec: AMR-NB (optional), Opus*,
G.711(A/µ), G.723.1, G.729, G.729AB, G.726, iLBC
> DTMF: In-band, Out-of-band(RFC 2833) and SIP
INFO
> Full-duplex hands-free speakerphone with AEC
> VAD, CNG, AEC, PLC, AJB, AGC
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, VQ-RTCPXR
> USB port (2.0 compliant)
Bluetooth earphone through BT40,
Contact synchronization through BT40,
Wi-Fi through WF40,
USB call recording through USB flash drive
> Enhanced DSS key
Directory
> 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, voice mail
> Flexible seating
> Call park, call pickup
> Executive and Assistant
> Centralized call recording
> Visual voice mail

Display and Indicator
> 3.66″ 240×120-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
> Multilingual user interface
> Caller ID with name and number
> Power saving
Feature keys
> 8 line keys with LED
> 8 line keys can be programmed up to 21
paperless DSS keys (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
Interface
> Dual-port Gigabit Ethernet
> Power over Ethernet (IEEE 802.3af), Class 3
> 1 x USB port (2.0 compliant)
> 1 x RJ9 (4P4C) handset port
> 1 x RJ9 (4P4C) headset port
> 1 x RJ12 (6P6C) EHS port
> 1 x RJ12 (6P6C) EXT port:
Supports up to 6 Expansion Modules
Other Physical Features
> Color: Black
> Stand with 2 adjustable angles
> Wall mountable
> External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/1.2A output
> Power consumption (PSU): 1.4-3.0W
> Power consumption (PoE): 1.7-7.0W
> Dimension (W*D*H*T):
265mm x 210mm x 170.5mm x 53.5mm
> Operating humidity: 10-95%
> Operating temperature: -10~50°C (+14~122°F)
Management
> Configuration: browser/phone/auto-provision
> Auto provision via FTP/TFTP/HTTP/HTTPS
for mass deploy

Auto-provision with PnP
> Zero-sp-touch, TR-069
> Phone lock for personal privacy protection
> Reset to factory, reboot
> Package tracing export, system log

Network and Security
> SIP v1 (RFC2543), v2 (RFC3261)
> Call server redundancy supported
> NAT traversal: 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
DSCP
> SRTP for voice
> Transport Layer Security (TLS)
> HTTPS certificate manager
> AES encryption for configuration file
> Digest authentication
> OpenVPN, IEEE802.1X
> IPv6
> LLDP/CDP/DHCP VLAN
> ICE
Package Features
> Package content:
– Yealink SIP-T27G IP phone
– Handset with handset cord
– Ethernet Cable (1.5m CAT5E UTP Cable)
– Stand
– Quick Start Guide
– Power Adapter (Optional)
– Wall Mount Bracket (Optional)
> Qty/CTN: 5 PCS
> N.W/CTN: 6.6 kg
> G.W/CTN: 7.4 kg
> Giftbox size: 295mm x 224mm x 115mm
> Carton Meas: 602mm x 308mm x 236mm

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