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An advanced intelligent communication system that pro vides subscriber-requested, advanced communication ser vices through existing communication switches even in those circumstances in which the hardware communication switch is not con? gured to provide such communication services. The system supports the use of personal identi? cation number access cards for use in? xed and mobile markets from any communication device located anywhere in the world and provides? exible call processing and switching services that deliver enhanced computer tele phony capabilities utilizing standard communication equip ment and operating systems.