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Carrier Sensitive Routing User Guide
Chapter1 Overview of Cisco Carrier Sensitive Routing
CSR Components
CSR Components
The three major components of CSR are as follows.
• postgreSQL Database
• CSR application
• CSR GUI
The CSR GUI and the CSR application are not directly connected. They are both connected to the
database. Figure1-1 illustrates these components.
Figure1-1 CSR Components
CSR Basics
This section describes the basic operation of CSR.
After CSR is started, it registers with the gatekeeper connected to a network. Any one or a combination
of the following registration messages are used:
• ARQ
• LRQ
• DRQ
• BRQ
• URQ
• RAI
• LCF
• LRJ
• IRR
The gatekeeper responds with any of the following messages:
• ANI
• DNIS
• Source carrier
• Destination carrier