Abstract: In a telecommunications network, a platform is provided to perform authorization, routing, gathering, and delivery of transmissions between multiple remote units and host locations. In a controlled environment, remote units are authorized to initiate transmissions to and receive transmissions from a limited number of locations. The platform stores profile information for remote units in a database, including services authorized for remote units based on timing events. The platform determines the appropriate destination for a transmission from a remote unit based on the profile information stored in the database and identifiers associated with the remote unit and telecommunications router serving the remote unit. The platform authorizes a transmission to the destination based on the profile information, determines a routing number associated with the destination, and transmits the routing number to an appropriate point in the network to enable completion of the transmission.

Abstract: An emergency call originates from a cellular radiotelephone (20) and communicates through one of A-side and B-side cellular systems. Upon receipt of the call, the cellular radiotelephone (20) is assigned a temporary substitute Mobile Identification Number (MIN) (100) by the receiving A-side or B-side cellular system MTSO (33). Upon termination of the emergency call, a call-back to the cellular radiotelephone (20) is routed to both of the A-side and B-side MTSOs (100), using the substitute MIN (100), by the Public Switched Telecommunications Network (36). Both A-side and B-side MTSOs (100) issue a page order message to cellular radiotelephone (20) by transmitting to the MIN (74). Paging order confirmation messages (78), conveying the MIN (74), are evaluated for a match with a unique Electronic Serial Number (76).