IP phone Yealink SIP-T27G 6 lines, PoE, GigE

Phone functions

• 6 SIP accounts with independent configuration
• Speed Dial
• Call forwarding, waiting mode
• Transfer, maintenance
• Call return, group listening
• Mute, Auto Answer, DND (Do Not Disturb)
• 3-way conference
• Select melody/download/delete
• Hotline, emergency calls
• Manual/automatic time setting
• Recruitment rules
• XML Browser
• Action URL/URI
• Embedded screenshots
• RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
• Customizing DSS buttons
• The USB port is intended for:

- connecting Bluetooth headsets via the Yealink BT40 adapter;
- connection to wireless WiFi networks using the Yealink WF40 adapter.

Codecs and voice settings

• HD voice: HD handset, HD speakerphone
• Wideband codec: G.722
• Codecs: G.711 (A/u), G.723.1, G.729AB, G.726, iLBC, Opus (8 kHz and 16 kHz)
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex speakerphone with AEC (echo cancellation)
• VAD (Voice Activity Detection), CNG (Comfort Noise Generator), AEC (Acoustic Echo Cancellation), PLC (Media Loss Marking), AJB (Adaptive Voice Packet Buffer), AGC (Automatic Gain Control)

Notebooks

• Local address book up to 1000 contacts
• Blacklist
• Remote XML and LDAP Address Book
• Intelligent search
• Search by notebooks, import/export local notebook
• Call history: dialed/received/missed/forwarded

Integration with IP-PBX

• BLF (subscriber state monitoring), BLA
• Anonymous call, reject anonymous calls
• Hot-desking
• MWI
• Voicemail, Call Park, Call Pickup
• Music on hold
• Reminder
• Centralized call recording

Screen and indicators

• 3.66" LCD screen with 240x120 resolution and backlight.
• LED power indicator and MWI
• Line keys with programmable two-color LEDs. Subscriber status display (BLF)
• Support multiple languages
• Caller ID with name and number
• Power saving mode

Function buttons

• Keyboard with Russian and English letters
• 8 line keys with two-color LEDs with programmability (up to 21 values on 3 screen pages)
• 6 navigation keys with programmability
• 4 context-sensitive dynamically programmable XML keys
• Volume control keys
• 4 function keys with reprogrammability: conference, content, transfer, microphone mute.
• 2 function keys without reprogramming: redial
• 2 function keys with LED without reprogrammability: access to voicemail, headset

Physical characteristics

• Adjustable tilt angle (2 positions).
• Possibility of wall mounting
• Power supply: Input AC 100-240V, Output DC 5V/1.2A
• Power consumption via power supply: 1.44 – 3.47 W
• Power consumption via PoE: 1.72 – 7.07 W
• Dimensions (W*D*H*T): 265mm*210mm*171mm*54mm
• Color: black
• Working humidity: 10~95%
• Operating temperature: -10~50˚C

Interfaces

• 2xRJ45 Ethernet ports 10/100/1000 Mbps
• 1xRJ9 for connecting the handset
• 1xRJ9 for connecting a headset
• 1xRJ12 for connecting the adapter to wireless headsets (EHS36) additional expansion modules ( EXP20 ). Connection to 6 expansion modules is possible.
• Supports PoE (IEEE 802.3af) Class 2
• 1xUSB 2.0 port

Control

• Phone setup: web interface/phone screen/Autoprovision
• Autoprovision: FTP/TFTP/HTTP/HTTPS/PnP Autoprovision
• Zero-sp-touch, TR-069
• Keypad lock
• Reset to default settings, reboot
• Logs: PCAP Trace, system log
• 3 levels of access to the web interface: admin/user/VAR

Network Features and Security

• SIPv1 (RFC2543), SIPv2 (RFC3261)
• SIP server backup support
• STUN server support
• Call methods: Proxy and peer-to-peer (by IP address)
• Network modes: Static/DHCP/PPPoE
• HTTP/HTTPS web server
• Time and date synchronization via SNTP
• UDP/TCP/DNS-SRV(RFC3263)
• QoS: 802.1p/Q tagging(VLAN), Layer 3 ToS DSCP
• OpenVPN (Attention! This functionality is not available in products intended for the member countries of the Customs Union)
• TLS
• Managing HTTPS certificates
• AES encryption of configuration files
• Support for encryption and identification standards (MD5 and MD5-sess)
• SRTP (Attention! This functionality is not available in products intended for the member countries of the Customs Union)
• IEEE802.1X
• IPv6
• LLDP/CDP/DHCP VLAN
• ICE