Method of transmitting terminating call signals within a restricted duration and a base station and a portable unit for use in the same

摘要: A portable unit that may be called from a base station through radio control channel by succession of terminating call signals is sent the to for first or restricted time duration (T1), selected in consideration battery saving period operation carried out unit. Within period, put into transient active and inactive states during interval second interval, respectively. Selection made so longer than receive at least one within The monitors an acknowledgement signal (T2) after lapse interrupts when not received durations. In unit, released presence detected squelch circuit.