Product Description (Yealink SIP-T21P-E2)
Yealink SIP-T21P-E2 offers HD Voice, PoE, or a VoIP phone.
Audio Features
> HD voice: HD handset, HD speaker
> Wideband codec: G.722
> Narrowband codec: G.711(A/?), 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
Phone Features
> 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
Directory
> Local phonebook up to 1000 entries
> Blacklist
> XML/LDAP remote phonebook
> Intelligent search method
> Phonebook search/import/export
> Call history: dialed/received/missed/forwarded
IP-PBX Features
> 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
Display and Indicator
> 132x64-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
Feature keys
> 2 line keys with LED
> 6 features keys: message, headset, redial, tran, mute, hands-free speakerphone
> 6 navigation keys
> Volume control keys
Interface
> 2xRJ45 10/100M Ethernet ports
> Power over Ethernet (IEEE 802.3af), class 2
> 1xRJ9 (4P4C) handset port
> 1xRJ9 (4P4C) headset port
Other Physical Features
> Wall mountable
> External universal AC adapter (optional): AC 100~240V 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: -10~50?C
Package Features
> Qty/CTN: 10PCS
> N.W/CTN: 11.7kg
> G.W/CTN: 12.5kg
> Giftbox size: 215mm*200mm*118 mm
> Carton Meas: 615mm*436mm*208mm
Management
> 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
Network and Security
> 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
To know more about the product, you can visit the datasheet.
To find other products under the category, you can visit this link.
