Description
The Yealink SIP-T21P-E2 Entry-Level IP Phone features:
• 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
— VAD, CNG, AEC, PLC, AJB, AGC
• Directory features:
— Local phonebook up to 1000 entries
— 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
— 4 LEDs: 1xpower, 2xline, 1xmessage
— 1 x RJ9 handset port
— 1 x RJ9 headset port
• 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 features:
— 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
• Network and Security features:
— 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
— 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
• Management features:
— Configuration: browser/phone/auto-provision
— Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
— Auto-provision with PnP
— Zero-sp-touch
— Provisioning server redundancy supported
— Reset to factory, reboot
— Package tracing export, system log
• Power options:
— Power over Ethernet (IEEE 802.3af)
— Power adapter: AC 100~240V input and DC 5V/1.2A output (sold separately)
• Stand with 2 adjustable angles
• Wall mountable
• Color: Black
• Condition: New
• One Year Warranty