YEALINK T21P Features and Functions

• 2 Line Appearances
• Dual-port 10/100 Ethernet
• Yealink Optima HD Voice Supported
• Up to 2 SIP accounts
• Full-duplex hands-free speakerphone
• No expansion modules supported
• RJ9 Headset Port
• 132×64-pixel graphical LCD display
• Wall mountable

YEALINK T21P Specification

Phone Features

• 2 VoIP accounts
• Call hold, mute, DND
• One-touch speed dial, hotline
• Redial, call return, auto answer
• Call forward, call waiting, call transfer
• Group listening, SMS
• Call history: dialed/received/missed/forwarded
• Local 3-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Keypad lock, emergency call
• Set time & date manually or automatically
• Dial Plan, XML Browser, action URL & action UR

Audio Features

• Full-duplex hands-free speakerphone with AEC
• Codecs: G.722(Wideband), G.711(A/μ), G.723, G.729AB, G.726
• DTMF: In-band, out-of-band (RFC 2833) and SIP INFO
• VAD, CNG, AEC, PLC, AJB, AGC

Directory

• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Intelligent search method
• Phonebook search/import/export

PBX Integration Features

• Anonymous call, anonymous call rejection
• Message waiting indicator (MWI)
• Voice mail, call park, call pickup
• Intercom, paging, music on hold
• Call completion, call recording, hot-desking

Display and Indicator

• 132×64-pixel graphical LCD
• LED for call and message waiting indication
• Intuitive user interface with icons and soft keys
• National language selection
• Caller ID with name, number

Physical Features

• 2xRJ45 10/100M Ethernet ports
• 31 keys including 4 soft keys
• 4 LEDs: 1 power, 2 line, 1 message
• 1 RJ9 handset port
• 1 RJ9 headset port
• Wall mountable
• Power adapter: AC 100~240V input and DC 5V/600mA Output
• Power over Ethernet (IEEE 802.3af)
• Power consumption: 1.24-2.62W
• Dimensions: 209mm*188mm*150mm*41mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C

Management

• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployments
• Auto-provision with PnP
• Zero-sp-touch
• Provisioning server redundancy supported
• Reset to factory, reboot
• Package tracing export, system log

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261 )
• IPv6
• NAT transverse: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP /PPPoE
• HTTP/HTTPS web server
• Time and date synchro nization 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
• IEEE802.1X

Package Features

• Qty/CTN: 10 PCS
• N.W/CTN:
• G.W/CTN:
• Giftbox size: 215MM*200MM*118MM
• Carton Meas: 615mm*436mm*208mm