The SIP-T27P is a feature-rich sip phone for business. It has been designed by pursuing ease of use in even the tiniest details.Delivering a superb sound quality as well as rich visual experience. The T27P also offers a wide range of functions, like SCA, BLF List, call forward, call transfer, 3-way conference,and up to support various features.Using standard encryption protocols to perform highly secure remote provisioning and software upgrades.

Yealink Optima HD voice 
• 3.66" 240x120-pixel graphical LCD with backlight
• Up to 6 SIP accounts
• Paper label free design 
• PoE support
• Headset, EHS support
• Supports expansion modules
• Integrated stand with 2 adjustable angles
• Wall mountable (optional)
• Simple, flexible and secure provisioning options

Specification

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 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

 

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
• 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

 

Interface
• 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

 

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
• 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 DSCP
• 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