H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/06—Receivers
H04B1/08—Constructional details, e.g. cabinet
H04B1/086—Portable receivers
G—PHYSICS
G08—SIGNALLING
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B3/00—Audible signalling systems, e.g. audible personal calling systems
G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
Poste téléphonique comportant un préamplificateur à courant porteur, un interrupteur de coupure de micro et un dispositif de signalisation de cette coupure