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Upgradeable
With third-generation hardware, we are introducing a new IP
platform that is precongured for further implementation of
advanced functions and features, following the natural evolution
of IP telephony.
• Supportforrmware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
Dialog 4420 IP Basic is positioned as an entry-level IP telephone,
primarily intended for use in non-communications-intensive
areassuchasocereceptionareas,generalmeeting/service
areas, manufacturing and retail shop oors.
Dialog 4422 IP Oce is a mid-range IP telephone, oering
thefunctionalityneededforusersworkinginhigh-eciency
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(sux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Oce
version2
4425IPVision
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
– –
Dialog4420IPBasic