Yealink T21P E2

2 VoIP accounts wideband codec: G.722 Narrowband codec: G.711(A/µ), G.723.1, G.729Ab, G.726, 132 x 64-pixel graphical LCD with backlight call hold, mute, DND one-touch speed dial, hotline call forward, call waiting, call transfer group listening, SMS, emergency call redial, call return, auto answer local 3-way conferencing direct IP call without sip proxy ring tone selection/import/delete set date time manually or automatically dial plan XML browser, action URL/URI integrated screenshots RTCP-XR HD voice: HD handset, HD speaker wall mountable power over Ethernet support no power supply included (yea-PS5V600us).

Technical Specs

Core Features

  • 132 x 64-pixel graphical LCD backlit display
  • 2 VoIP accounts
  • HD Voice: HD Codec, HD speaker, HD handset
  • Two-port 10/100 Ethernet Switch, integrated PoE
  • Headset, wall-mountable
  • XML/LDAP remote phonebook

Audio Features

  • Full-duplex hands-free speakerphone with AEC
  • HD voice: HD handset, HD speaker
  • 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


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

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 URI

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 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

Network and Security

  • SIP v1 (RFC2543), v2 (RFC3261)
  • IPv6, open VPN
  • NAT transversal: STUN mode
  • Proxy mode and peer-to-peer SIP link mode
  • IP assignment: static/DHCP/PPPoE
  • HTTP/HTTPS web server
  • Time and date synchronization using SNTP
  • QoS: 802.1p/VLAN tagging, Layer 3 ToS, DSCP
  • SRTP for voice
  • Transport Layer Security (TLS)
  • HTTPS certificate manager
  • AES encryption for configuration file
  • Digest authentication using M D5/MD5-sess
  • IEEE802.1X


  • 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

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

Included In The Box

  • T21P device
  • 2-way desk stand
  • No power supply included