Digital switching exchange for telephone systems
Digital switching network
Digital switching network
Digital switching network for switching signals of different bit
Digital switching network for telecommunications exchange
Digital switching over PAM bus system
Digital switching system
Digital switching system
Digital switching system
Digital switching system connecting buses with incompatible prot
Digital switching system interconnecting buses with imcompatible
Digital switching system with host and remote duplicated transmi
Digital switching system with two-directional addressing rams
Digital switching systems employing multi-channel frame associat
Digital system error correction arrangement
Digital tandem channel unit interface for telecommunications net
Digital tandem channel unit interface for telecommunications net
Digital TDM switching exchange wherein switching is effected by
Digital telecommunication link for efficiently transporting mixe
Digital telecommunication system