Reverse ordered control information transmission
Reversible device for the demultiplexing of several light signal
RF frequency multiplexed fiber optic data bus
RF signal distribution scheme
Ring back tone transmission system
Ring bus hub for a star local area network
Ring bus station having dual oscillators
Ring communication network node apparatus with buffers and metho
Ring communication network station
Ring communication network system and a method for controlling s
Ring communication system
Ring communication system
Ring communication system data packets reusable a variable numbe
Ring communication system using ISDN
Ring communications system
Ring configurator for system interconnection using fully covered
Ring interworking between a bidirectional line-switched ring tra
Ring interworking between bidirectional line-switched ring trans
Ring interworking between bidirectional line-switched ring trans
Ring interworking between path-switched ring transmission system