The two types of supported platforms for the Avaya IP Office Web Client are an Avaya IP Office 500V2 Small Community Network deployment and an Avaya IP Office Application Server with an Avaya IP Office 500V2. An Avaya IP Office 500V2 Small Community Network deployment is a deployment that includes the IP500V2 control unit, with an optional Expansion Server. An Avaya IP Office Application Server with an Avaya IP Office 500V2 is a deployment that includes the IP500V2 control unit, the Application Server, and an optional Expansion Server. An Avaya IP Office 500V2 Expansion Server and an Avaya IP Office Server Select Primary deployment are not supported platforms for the Avaya IP Office Web Client.