Deployment Scenarios
Two basic deployment scenarios exist for the
routing and policy management.
- running exclusively on a server.
- co-hosted with other virtualized applications on a server.
Routing and Policy Management
The two basic configurations for routing and policy management are:
Centralized Ribbon Policy Server (PSX)
Centralized PSX
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The centralized PSX server combines call routing functionality with exceptional capacity of storing tens of millions of call routes in a single database. This SBC-Centralized PSX deployment distributes that routing intelligence to every PSX server in the network and simplifies the provisioning process.
The below figure depicts the SBC deployed with an external PSX and an EMS.
SBC with External PSX and EMS
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Embedded Routing Engine (ERE)
The ERE provides less routing and policy management functionality and is intended for smaller networks with no complex routing needs.
SBC with ERE
![SBC with ERE.png](/plugins/servlet/confluence/placeholder/unknown-attachment?locale=en_GB&version=2)