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VoIP phones Yealink SIP-T21

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₨ 9,350

₨ 8,800 per 1

The Yealink SIP-T21P (2 VoIP Accounts w/ PoE & HD Voice) is an entry level IP phone designed for an enhanced user experience with a generously large 5-line LCD display.

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Backlit-LCD Yes
Color Screen No
Gigabit Ethernet No
Headset Interface RJ9
Protocol SIP
Touch Screen No
Power Supply PoE (IEEE 802.3af), Power Supply Available Separately
# of Ethernet Ports 2
Model SIP-T21 & SIP-T21P
High Definition Yes
EHS Support No

VoIP phones Yealink SIP-T21

Yealink SIP-T21 is replacement of SIP-T20 model, This latest IP Phone is best in breed. At this entry-level this IP Phone will delight you by most advance features.  Such as Open VPN,  SRTP/ HTTPS/ TLS, 802.1x.  Made of solid materials. A prominent easy to read wide LCD 132 X 64 pixel graphical display.  HD voice capability truly makes this phone “buy for a buck” deal. Dual 10/100 WAN LAN ports save you additional wiring cost. Intuitive easy to use web interface will help  you setup two SIP accounts. Advance security features and VPN makes this IP Phone denture and secure for any medium to large enterprise environment.


HD Voice: HD Codec, HD speaker, HD handset

132 x 64-pixel graphical LCD

2 VoIP accounts

Two-port 10/100 Ethernet Switch, integrated PoE

Headset, wall-mountable

XML/LDAP remote phonebook


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



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

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

Local 3-way conferencing

Direct IP call without SIP proxy

Ring tone selection/import/delete

Keypad lock, emergency call

Set date time manually or automatically

Dial plan, XML Browser, action URL&action URI

IP-PBX 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

132x64-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

Network and Security

SIP v1 (RFC2543), v2 (RFC3261)

IPv6, open VPN

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 synchronization using SNTP


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



Configuration: browser/phone/auto-provision

Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy

Auto-provision with PnP


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: 1xpower, 2xline, 1xmessage

1xRJ9 handset port

1xRJ9 headset port


Power adapter (optional):

AC 100~240V input and DC 5V/600mA Output

Power over Ethernet (IEEE 802.3af)

Power consumption: 1.4-2.6W

Net weight: 0.81kg

Dimension: 209mm*188mm*150mm*41mm

Operating humidity: 10~95%

Storage temperature: -10~50°C

Package Features

Qty/CTN: 10 PCS

N.W/CTN: 10.8KG

G.W/CTN: 12.3KG

Giftbox size: 215mm*200mm*118mm

Carton Meas: 615mm*436mm*208mm

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