1
Emanuel R Hafner: Method for building-up of routing addresses in a digital telecommunication network. Hasler, Brady O Boyle & Gates, March 28, 1978: US04081612 (190 worldwide citation)

In a digital telecommunication network containing bearer channels between switching nodes, the method of building-up a routing address consisting of routing words that are associated with the switching nodes and via which the transmission of information packets is effected in accordance with the rou ...


2
Emanuel R Hafner, Zdenek Nenadal: Data transmission system. Hasler, Brady O Boyle & Gates, September 13, 1977: US04048446 (36 worldwide citation)

A plurality of subscriber stations and a plurality of switching points are connected in series in a loop circuit transmitting signals in one direction, parallel line sections disposed in parallel with the loop circuit are each connected with two switching points and each switching point contains a s ...