TELEDAC

Class [9]
Computer & Software Products & Electrical & Scientific Products

Apparatus for call searching and free channel selection; erasable number dial stores for storing call numbers in communications engineering networks; apparatus for producing group call signals in communications transmission networks; apparatus for liberating at least one channel when all channels of preferably wire-free priority connection communications engineering network are engaged and there is a special urgency; transition devices between radio and wire communications networks; operating apparatus for wire-free transmission and recieving apparatus in vehicles.