 new location-can be delivered thanks to the sophistication of this IN infrastructure (and thanks to important legislation vociferously objected to by the telcos). With local number portability, although your physical address will be different at your new location, you may want to keep your old phone number so your friends and colleagues can easily recall it. But for calls made with your old number to reach your new physical address, there must be translation tables in the network that can identify your correct physical address and properly route incom- ing calls to you. Around the mid-1980s, Bellcore (which is now Telcordia) pioneered the second generation of INs, called AINs (see Figure 4.15). AINs move the service logic out- side the switch and onto an independent SCP. An AIN has a service-independent network architecture that allows carriers to create and uniformly support telecom services and features via a common architectural platform, with the objective of allowing for rapid creation of customizable telecommunication services. Intelligent Networks Service Control Function CCS/SS7 Network Service Administrator Service Control and Service Function Subscriber Controls Switching System SSP Service Switching Point Customer SCP Service Control Point Systems SMS Service Management System STP Signal Transfer Point Switch Adjunct Intelligenti Peripheral Operations Systems End Office Figure 4.15 AIN architecture An AIN is composed of intelligent nodes that are linked via SS7 to support a variety of services and advanced call-handling features across multiple vendor domains. With the introduction of the AIN architecture, a few additional compo- nents were needed. First, the SMS is a service-creation environment that facilitates the technical and customer service representatives' interface with the provisioning and network management systems. Second, intelligent peripherals are computing platforms that serve a very specific purpose but have a very widespread demand across the network (e.g., voice recognition and voic