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  Aastra Dialog 4422 Ip Office 
Hardware > Comunicaciones > VoiP > Terminales-VoIP-fijos > Aastra > Dialog 4422 Ip Office
LCD 2 lineas, 2xRJ45, puerto auriculares
Garantía del fabricante: 2 años SAT (Servicio Técnico)
Hoja de Datos
Disponibilidad: Producto con reposición alta, 24/72h
   Características
Remote upgrading of configurations or software from a central
location simplifies operation and maintenance. Regardless of
location, the IP telephones are kept constantly up to date with
the most current software and ready to receive new technical
enhancements.

Dialog 4000 IP telephones comply with all existing standard
requirements, as well as the latest environmental and safety
regulations.

Dialog 4000 IP telephones have a number of advanced security
and safety features. Ease-of-use and ease-of-maintenance are
focus areas for new IP platform development and will continue to
be so in future feature enhancements.

• Easy migration to IP telephony
• Elegant design and superior ergonomics
• Compliance with environmental standards
• Easy operation and maintenance
• User mobility (free seating)

Excellent Voice Quality and Telephony Services
• Support for Aastra MX-ONE™, BusinessPhone, and MD
Evolution telephony systems
• Speaker for monitoring calls and listening to telephony services (for example, interactive voice systems, news and weather forecasts)
• Equipped with hearing aid support and acoustic shock protection
• Quality of service (QoS): Packet prioritization for speech and
signaling according to DiffServ. Layer 2 QoS

Up-to-Date
• SIP can be used with the MX-ONE™ Telephony Server. Features
(such as callback and conference calls) are initiated in the same
way as with analog telephones (suffix dialing).
• Media encrypted with SRTP (Secure Real-Time Transport
Protocol) and signaling with TLS (Transport Layer Security)
• Security authentication with RADIUS servers using EAP
(Extension Authentication Protocol), IEEE 802.1x.
• PoE (Power over Ethernet), IEEE 802.3af, Power Class 1, which
means less than 4W required. This enables centralized power
supply with the associated capability for power supply backup.
• Compliant with the EU directive for RoHS (Restriction of
Hazardous Substances).
   Especificaciones
Features a two- row graphical display
13 keys with LEDs
Call list (local)
Monitor speaker
2-port Ethernet switch (to share a LAN cable/port with a PC)
Headset port (with dedicated headset switching key)
Power over LAN support (according to IEEE 802.3af)
User mobility (log-on and call)
User settings via web browser
Multi-codec support
Multi-language support
QoS support (incl.QoS statistics available via WEB browser)
Branch office survivability support – i.e. automatic backup gatekeeper registration/deregistration
Hearing-impaired support with amplification (+6dB)
Acoustic shock protection
 
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