Évaluations - 3, GPA: 4
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Facilité d'utilisation
Elegant and sophisticated, the Dialog 4000 IP is the intelligent solution for simplified, cost-effective migration to the world of IP telephony. 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. Dialog4425IPVisionversion2Dialog4422IPOfficeversion2Dialog4425IPVisionversion2Dialog4422IPOfficeversion2 Features • Easy migration to IP telephony • Elegant design and superior ergonomics • Compliance with environmental standards • Easy operation and maintenance • User mobility (free seating) Models • Dialog 4420 IP Basic • Dialog 4422 IP Office • Dialog 4425 IP Vision 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 *AastraBusinessPhoneonlysupportsDialog4422andDialog4425. Telephony System Minimum Requirements AastraMX-ONE™TelephonyServer2.0orTelephonySwitchAastraBusinessPhone*Version7.0AastraMDEvolution/EBNVersion8.0cCall Features Emergency call support . Fixed number assignment . Monitorspeaker . Mutefunction . Volumecontrol . Programmableringtones(max.volume>72dBA) 10Speeddialing . Increased volume for users with impaired hearing . Acousticshockprotection:ETS300245-2 . VoIP Features DHCP* . RTP,IETFRCF3550t . QualityofService,IEEE802.1p&qandDiffServ . VLANsupportIEEE802.1p&q . SupportforcodecsG.711PLC,G.729a,G.729ab,G.723.1 . H.323V4 . Branchofficesurvivabilitysupport . SIPsupport . Supportforencryptedmediastream(SRTP) . *Dialog4420IPBasicrequiresDHCP.FixedIPaddressisnotsupportedonthisspecificmodel. Dialog4420IPBasicDialog4420IPBasic 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 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). Product features Aastra Dialog IP telephones 4420IPBasic4422IPOfficeversion24425IPVisionversion2Dimensions(HxWxL)92x159x230mm92x159x230mm102x240x234mmFunctionkeyswithLEDs121323Programmable keys 7717Supportforextrakeypanelwith17keys– 1CalllistUsermobility:Logonandcalls– .. Hands-freespeaker,fullduplex/AEC– .. Headset port and key – .. Programmable ringtones ... Optionunitwithsupportforextrabellorbusysignals– .. Calllist– .. Contacts(upto1000)– .. Graphicdisplay,LCD– 128x25pixel320x80pixelAdjustableviewingangle– .. Adjustablecontrast– .. Backlitdisplay– – . Internet browser – – . Corporatedirectory– – . Common Features Programmable keys FunctionkeyswithLEDsPower PoweroverEthernet(PoE),IEEE802.3af.PowerClass148VDCOptionalpoweradapter–input– output 100–230VAC24VACAverage consumption using PoE 2WAv...