What is P25?
Project 25 (P25) defines a suite of standards for a digital wireless radio communications system to be used by the emergency response community. To allow multiple vendors to supply the products and services to the communications system users, the Project 25 system has eight interfaces for which standards are or will be developed. Each interface allows the products of one manufacturer to interoperate with products of other manufacturers by defining the signaling and messages that cross the interface. For example, an agency could purchase P25 portable radios from one or more vendors, mobile radios from other vendors, the base stations from others, and dispatch consoles from still other vendors; all would have the features the agency needs to accomplish its mission, and all would interoperate under the P25 standards.
