Avaya IP 500 Standard upgrade to Pro License 202959
The IP Office IP500 Pro upgrade gives: the ability to expand the system using up to eight external Expansion Modules, allowing the IP Office 500 to support a maximum of 272 phones through a mixture of analog, digital or IP handsets; Support for additional analog trunks via IP Office Analog Trunk 16 Module; Note that the Professional Edition also enables the licensing of advanced applications such as Voicemail Pro.