Sub Committee TR-45.3 is assigned the authority to develop performance, compatibility, and interoperability standards for equipment that makes use of Time Division Multiple Access (TDMA) technology for radio access in a system that supports any combination of international, public, non-public, or residential mobile and personal communications.

Sub Committee TR-45.5 has the authority to develop performance, compatibility, and interoperability standards for Spread Spectrum Digital wireless access systems that support any combination of international, public, non-public, or residential mobile and personal communications.

Mobile and Personal Communications Standards Subcommittee TR-45.8 is assigned the authority to develop performance, compatibility, and interoperability standards for equipment that supports Wireless Packet Data.