A system and method for servicing a call request within a telecommunications system includes and involves a client sub-system that is configured to generate a call request and to transmit the same via the Internet. The call request includes a call termination address and a service identifier. The call termination address corresponds to a call termination station that is coupled to a switching system that is coupled to the telecommunications system. Also included and involved is an intelligent services network that is coupled to the client sub-system via the Internet and which is operative to receive and validate the call request and to process the call request in accordance with the service identifier. A telephony gateway sub-system is coupled to the intelligent services network via the switching system and to the client sub-system via the Internet. The telephony gateway sub-system is operative to communicate with the intelligent services network via the switching system to cause the intelligent services network to initiate a call to the termination address via the switching system and to couple the call to the client sub-system.