This image is a graphical representation of the Oracle Voicemail & Fax architecture stack. The first layer in the stack is the Voicemail & Fax Application. The next layer is the Computer Telephony (CT) Server which includes the Intel R4 Global Call APIs and five cards (T1/D1, D82, Analog, HMP, and Fax). The Oracle Container appears to the right of the Telephony Server.