true in every circumstance and hence in one embodiment the pstn isdn 16 and or 18 may include the ain functionality represented by block 14 in fig1 and discussed hereinbelow an advanced intelligent network ain is a vendor and platform independent telecommunications network that is designed with distributed network intelligence in databases called service control points scps e g the scp 22 in fig1 by separating call processing intelligence from the switch advanced intelligent networks promise reduced service provider dependence on switch generic features new services can be created on distributed platforms across the network much faster and at substantial cost savings service creation may also be distributed in workstations called service creation environments sces e g the sce 28 in fig1 the scp 22 and sce 28 are described later hereinbelow in both wireline and wireless networks the ain architecture separates call processing intelligence and feature functionality from network switches placing that intelligence and functionality in platforms spread across the network the call processing intelligence is sometimes referred to as service logic an ain infrastructure typically involves service logic on network platforms an out of band signaling system e g the signaling system 7 or ss7 and ain capable software in the network switch with this infrastructure in place service providers end users and third parties may be able to create and modify services independently of switch vendors some of the advantages of the ain architecture for wireline or wireless networks include reduced service provider dependence on switch.