MEP can be deployed in two different ways, in a mobile provider managed scenario and in an enterprise managed scenario.
In a mobile provider managed scenario, such as the one shown in Figure 1–1, the Gateway engine and its associated sync database form the Gateway tier in the carrier's network. The corporate network includes the MEP Enterprise tier components and the EIS/EAI system.
In an enterprise managed scenario, such as the one shown in Figure 1–2, all of the MEP components and the database or EIS/EAI system are in the corporate network.
The carrier's network includes no MEP components. The corporate network, in essence, controls all of the MEP components as well as the database or EIS/EAI system. In the corporate network, the MEP components can be configured in a single-tier or two-tier configuration. These configurations are described in MEP Architecture.