History of SS7

Overview

The SS7 Architecture

Service Switching Point (SSP) -- The Service Switching Point (SSP) is the local exchange in the telephone network.

Service Control Point (SCP) -- The Service Control Point (SCP) serves as an interface to telephone company databases.
Components of the SCP
• CMSDB - Call Management Services Database
• LNP - Local Number Portability
• LIDB - Line Information Database
• BSDB - Business Services Database
• HLR - Home Location Register
• VLR - Visitor Location Register

Signal Transfer Point (STP) -- All SS7 packets travel from one SSP to another through the services of a Signal Transfer Point (STP).

SS7 Standards

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