Yealink SIP-T21P-E2 on uusi päivitetty versio suositusta SIP-T20P puhelinmallista. T21P-E2 on edullinen ja helppo IP-puhelin, joka tuottaa HIFI-tasoista äänenlaatua tehokkaan äänenprosessoinnin, HD luurin, HD kaiuttimen ja HD kodekin (G.722) avulla.

Ominaisuudet:
• Yealink HD Voice
• 132×64-pixel graphical LCD with backlight
• Two-port 10/100M Ethernet Switch
• PoE support
• Up to 2 SIP accounts
• Headset support
• Wall mountable
• Simple, flexible and secure provisioning options

Tekniset tiedot:

Audio:
• HD voice: HD handset, HD speaker
• Wideband codec: G.722
• Narrowband codec: G.711(A/u), G.723.1, G.729AB, G.726, iLBC
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC

Puhelin:
• 2 VoIP accounts
• 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

Hakemistot:
• Loal phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Intelligent search method
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded

IP-vaihdetuki:
• Busy Lamp Field (BLF)
• Bridged Line Apperance(BLA)
• Anonymous call, anonymous call rejection
• Message Waiting Indicator (MWI)
• Voice mail, call park, call pickup
• Intercom, paging, music on hold, emergency call
• Call completion, call recording, hot-deskin Näyttö ja merkkivalot:
• 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

Toimintonäppäimet
• 2 line keys with LED
• 6 features keys: message, headset, redial, tran, mute, hands-free speakerphone
• 6 navigation keys
• Volume control keys

Liitännät:
• 2xRJ45 10/100M Ethernet ports
• Power over Ethernet (IEEE 802.3af), class 2
• 1xRJ9 (4P4C) handset port
• 1xRJ9 (4P4C) headset port

Muut mekaniikka:
• Wall mountable
• External universal AC adapter (optional):
– 100…240VAC input and DC 5V/600mA output
• Power consumption (PSU): 1.2-1.9W
• Power consumption (PoE): 1.8-2.3W
• Dimension(W*D*H*T): 209mm*188mm*150mm*41mm
• Operating humidity: 10…95%
• Operating temperature: -10…50C

Hallinta:
• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
• Auto-provision with PnP
• Zero-sp-touch TR-069
• Reset to factory, reboot
• Package tracing export, system log

Tietoliikenne ja -turva:
• SIP v1 (RFC2543), v2 (RFC3261)
• NAT transverse: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP
• 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
• OpenVPN, IEEE802.1X
• IPv6