NOTA: A partir de la version de firmware 73, se incluyen las siguientes funcionalidades y mejoras:

 

1)    Incremento del nº de lineas en la serie SIP-T4X

2)    Proteccion de configuracion personalizada con autoprovisioning

3)    RTCP-XR y VQ-RTCPXR

4)    Capturas de pantalla

5)    Exportar/importar archivos de configuracion locales

6)    Autenticación SIP para XSI (Broadsoft)

7)    Hybrid Key System (Broadsoft)

8)    Añadido soporte para que el usuario pueda seleccionar tonos de llamada diferenciados, en cada cuenta registrada en el teléfono.

9)    Encriptación de archivos de configuración.

Puede comprobar el resto de novedades y optimizaciones en el siguiente enlace:

Yealink SIP phones Relese Note of Version 73

SIP T21 Entry-level IP Phone with 2 Lines & HD voice

-132 x 64-pixel graphical LCD
-2 VoIP accounts
-HD Voice: HD Codec, HD speaker, HD handset
-Headset, wall-mountable
-XML/LDAP remote phonebook


Yealink’s new SIP-T21 takes entry-level IP phones to a level never achieved before. Making full-use of high-quality materials, plus an extra-large 132 x 64-pixel graphical LCD showing a clear 5-line data display, it offers a smoother user experience, much more visual information at a glance, plus HD Voice characteristics. The T21 supports two VoIP account, simple, flexible and secure installation options, plus support
for IPv6, Open VPN and a redundancy server. It also operates with SRTP/ HTTPS/ TLS, 802.1x. As a very cost-effective and powerful IP solution, the T21 maximizing productivity in both small and large office environments.

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, AJ B, AGC

DIRECTORY

> Local phonebook up to 1000 entries
> Black list
> XML/LDAP remote phonebo ok
> Intelligent search method
> Phonebook search/import/export

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
> Call history: dialed/received/missed/forwarded
> Local 3-way conferencing
> Direct IP call without SIP proxy
> Ring tone selectio n/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
> HTTP/HTTPS web server
> Time and date synchronization usin g SNTP
> UDP/TCP/DNS-SRV(RFC 3263)
> QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS, DSCP
> SRTP for voice
> Transport Layer Security (T LS)
> HTTPS certificate manager
> AES encryption for configuration file
> Digest authentication using MD5/MD5-sess
> IEEE802.1X

MANAGEMENT

> 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 suppor ted
> Reset to factory, reboot
> Package tracing expo rt, 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
> Wall-mountable
> Power adapter: AC 100~240V input and DC 5V/600mA Output
> Power consumption: 1.4-2.6W
> Net weight: 0.81kg
> Dimension: 209mm*188mm*150mm*41mm
> Operating humidity: 10~95%
> Storage temperature: -10~50°C