Let AtlasPhones supply the Control Unit and you build your system around it by adding the Avaya phones, cards, and software edition of your choice. The IP Office Digital Package comes with documentation on DVD and the SD card with integrated voicemail and automated attendant.
The Control Unit Includes
 Avaya IP500 V2 Control Unit (700476005)
 IP Office Documentation DVD
 Avaya IP500 V2 System SD Card IP Office Version (700479728)