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.
Enhanced specialized mobile radio. Digital mobile telephone services offered to the public over channels previously used only for analog two-way dispatch.
Enhanced or Extended Specialized Mobile Radio
Digital SMR networks that provide dispatch, voice, and messaging and data services.
Digital, specialized mobile radio (SMR) networks that provide voice, messaging, dispatch and data services to customers. ESMR most commonly refers to Nextel Communications.
A single wireless device which combines a two-way radio, phone, mobile dispatch, radio paging and Mobile data capabilities, and operates on digital networks. Usually refers to Nextel Communications.
Using frequency bands originally allocated for two-way dispatch services, companies such as Nextel and Southern LINC have built digital mobile phone services similar to cellular and PCS systems.
