Abstract: Dynamically distributing portions of process functionality among plural functional blocks. A plurality of service point functions are interspersed throughout each function block. Each service point function performs a portion of processing. A service point function may correspond to processing associated with a protocol layer. A service point function may be implemented in hardware, software or firmware with any of the multiple function blocks. After completion of each service point function, a sub-path is called to connect the completed service point function with a next service point function to be performed. The sub-path invokes a pointer which provides the next routine (e.g., the service point functionality) to be performed. If any one functional block is becoming overloaded, the system can simply change one sub-path, to route process functionality associated with a particular service point functionality to be performed in another functional block with the same capability programmed or hardwired therein.