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IP Media Server (Global Call) Demo Guide — August 2005 31
Demo Details
Figure 2. IP Media Server (Global Call) Demo Architecture
Each module is composed of four elements:
• Board
• Device
• State Machine (call control)
• Wrapper
The Wrapper acts like a manager, receiving requests from the EventRouter and distributing the
request to the boards or devices. A device can have one or multiple state machines attached to it.
Each state machine represents one call.
5.2.2 EventRouter
The EventRouter is responsible for communicating with the modules. It does the following:
• Maintains routing tables
• Retrieves event data from the SRL and routes it to a module for processing
• Forwards event process result to another module if so requested.
EventRouter
Board Device
State Machine
IP Module
Board Device
State Machine
Voice Module
Board Device
State Machine
User
Module