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Yealink SIP-T21 with Power Supply Entry level IP phone with HD voice quality and extra large display for 2 SIP accounts See full product information Key features
2 IP accounts
132 x 64 pixel 5-line display
Power supply included
RJ9 headset port
HD voice
Compatible with leading IP PBX providers
This product is no longer manufactured
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Internal ref: YEALINKT21PPS Manufacturer part #: XXX
Yealink SIP-T21 with Power Supply
Top Product description Product Specs. Product Reviews Product FAQ Product description The Yealink SIP-T21 is an entry level IP desktop phone supporting 2 VoIP accounts with advanced features such as HD audio and a large 5-line LCD. The SIP-T21 supports IPv&, Open VPM and a redundancy server, plus SRTP, HTTPS.
It also provides a variety of features such as dual Ethernet ports, headset port, phonebook for 1000 entries, SMS, 4 soft keys and 3-way conferencing. PoE and PnP ports and compatibility with the leading IP-PBX and soft switch developments.
Features:
2 VoIP accounts, hotline, emergency call
Call waiting, call transfer, call forward
Hold, mute, flash, auto-answer, redial
3-way conference, DND, speed dial
Full duplex speakerphone
Phonebook for 1000 entries
Import/export, call history
Volume adjustment, ring tone selection
Tone scheme, System log
Multi-language (more than 20)
Dial plan, dial-now
Voicemail, MWI
Intercom, Paging
Call park, call pickup
Distinctive ringtone
Wideband codec: G.722
Narrowband codec: G.711, G.723.1, G.726, G.729AB, VAD, CNG, AEC, PLC, AJB, AGC
Full-duplex hands-free speakerphone with AEC
SIP v1 (RFC2543), v2 (RFC3261)
NAT Traversal: STUN mode
DTMF: In-Band, RFC2833, SIP Info
Proxy mode and peer-to-peer SIP link mode
IP Assignment: Static/DHCP/PPPoE
TFTP/DHCP/PPPoE client
Telnet/HTTP/HTTPS server
DNS client
NAT/DHCP server
FTP/TFTP/HTTP/PnP auto-provision
Configuration: browser/phone/auto-provision
Direct IP call without SIP proxy
Dial number via SIP server
Dial URL via SIP server
HTTPS (server/client)
SRTP (RFC3711)
Transport Layer Security (TLS)
VLAN (802.1 pq), QoS
Digest authentication using MD5/MD5-sess
Secure configuration file via AES encryption
Phone lock for personal privacy protection
Admin/user configuration mode
TI TITAN chipset
5-line LCD
31 keys
4 LEDs: 1xpower, 2xline, 1xmessage
1xRJ9 handset port
1xRJ9 headset port
Wall-mounted
Power adapter: AC 100~240V input and DC 5V/1.2A Output
Power consumption: 1.4-2.6W
Net weight: 0.81kg
Dimension: 209 x 188 x 41mm
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Product Specs. More Information Manufacturer part # XXX EAN 6938818300736 Warranty 1 year
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