Specialized mobile radio networks have incorporate frequency reuse and digital technology to increase their capacity and to provide service over very large coverage areas. An ESMR network is designed not only for the dispatch service associated with SMR, but also for mobile telephony and short messaging services as well as circuit-switched and packet data services. See also iDEN.
nhanced pecialized obile adio: Digital SMR networks, usually referring to Nextel Communications Inc., which provide dispatch, voice, messaging and data services.
See Enhanced Specialized Mobile Radio.