Aastra Dialog 4420 IP Basic Specification page 3

Upgradeable
With third-generation hardware, we are introducing a new IP
platform that is preconfigured for further implementation of
advanced functions and features, following the natural evolution
of IP telephony.
• Support for firmware downloads from web servers
– enabling new functionality with future telephony system
software releases – making the telephone future-proof
• Support for all major voice compression codecs for bandwidth
savings
Product features
Aastra Dialog IP telephones
Dimensions (HxWxL)
Function keys with LEDs
Programmable keys
Support for extra key panel with 17 keys
User mobility: Logon and calls
Hands-free speaker, full duplex/AEC
Headset port and key
Programmable ringtones
Option unit with support for extra bell or busy signals
Call list
Contacts (up to 1000)
Graphic display, LCD
Adjustable viewing angle
Adjustable contrast
Backlit display
Internet browser
Corporate directory
Dialog 4420 IP Basic
Dialog 4420 IP Basic is positioned as an entry-level IP telephone,
primarily intended for use in non-communications-intensive
areas such as office reception areas, general meeting/service
areas, manufacturing and retail shop floors.
Dialog 4422 IP Office is a mid-range IP telephone, offering
the functionality needed for users working in high-efficiency
business environments. It is also well-suited as a convenience
phone in public/service areas.
Dialog 4425 IP Vision is a high-end IP telephone with advanced
features, including multiple line handling and graphical display
built to handle all user needs. It can also be used in small
conference rooms.
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 back-
up.
• Compliant with the EU directive for RoHS (Restriction of
Hazardous Substances).
4420 IP Basic 4422 IP Office
version 2
92x159x230 mm 92x159x230 mm
12
7
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4425 IP Vision
version 2
102x240x234 mm
13 23
7 17
1 Call list
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320x80 pixel
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