Aastra Telecom Dialog 4000 Product features Aastra Dialog IP telephones, Upgradeable Up-to-Date

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.

Dialog 4420 IP Basic

Upgradeable Up-to-Date

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

•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).

Product features

Aastra Dialog IP telephones

4420 IP Basic	4422 IP Office	4425 IP Vision
	version 2	version 2

Dimensions (HxWxL)	92x159x230 mm	92x159x230 mm	102x240x234 mm
Function keys with LEDs	12	13	23
Programmable keys	7	7	17
Support for extra key panel with 17 keys	–	1	Call list
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	–	128x25 pixel	320x80 pixel
Adjustable viewing angle	–		
Adjustable contrast	–		
Backlit display	–	–	
Internet browser	–	–	
Corporate directory	–	–	