Advanced Intelligent Network (AIN) - A type of Intelligent Network developed by Bellcore (now Telcordia).
http://en.wikipedia.org/wiki/Intelligent_network

Intelligent Network (IN, I.N.)
Intelligent Network services or architecture can include: Service Switching Function (SSF) or Service Switching Point (SSP), Service Control Function (SCF) or Service Control Point (SCP), Service Data Function (SDF) or Service Data Point (SDP), Service Creation Environment (SCE) and Specialized Resource Function (SRF) or Intelligent Peripheral (IP). - Intelligent Networks are network architectures for telecommunication networks. 
http://en.wikipedia.org/wiki/Intelligent_network