ORTT System Architecture
The overall CS architecture is shown in Figure 3.
The most notable features of the system architecture is the ATM-like cell communication structure which transmits both voice and data between the panels and processing nodes of the system. This is illustrated in Figure 4.
Combined with the powerful Model Builder user interface and communication environment, this packet switching philosophy was greatly enhanced the scalability of the system. This cell-based technology allowed the separation of the control logic for all of the panels to a single central computer, allowing easy reconfiguration of the panel functionality without making any hardware or firmware changes to the panels themselves.
A set of three circuit board types was common to all the panel types. These boards provided voice and I/O digitization functions, and the third provided the signal conditioning for the various headset, handset and panel speakers. This greatly simplified the design, manufacture and testing of the custom panels. A representative diagram of the custom panel electronics is shown in Figure 5.
Figure 5 Notes
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