Abstract: A method and apparatus used by a communication system (100) to register communication system users which use service provider equipment. Multiple-user and special purpose single-user communication units (110) are provided and/or operated by service providers. MCUs (110) can be located on mobile vehicles or in fixed locations. The system along with MCUs (110) collect registration information and usage information for individual users (440) and individual MCUs (110). Service providers receive billing information concerning the usage of their MCUs (110) by communication system users. After communication system (100) registers each user whose registration information is contained within the at least one combined request message, communication system (100) provides communication services to each user and billing information services to the service provider for the communications service and the service provider furnishing the communications equipment.