1. | Telecommunications traffic, tariffs and costs : an introduction for managers / R. E. FarrAutor: FARR, R. E. Data Publicação: cop. 1988 Tema: Comunicações Eletrónicas | ||
2. | MPT 1343 : performance specification: system interface specification for radio units to be used with commercial trunked networks operating in band III sub-bands 1 and 2 / Radiocommunications AgencyData Publicação: 1988 Tema: Normas |