1
Arthur H Rosbury, Judson T Gilbert, Donald C O Connor, Grant A Newland: Modem diagnostic and control system. Racal Data Communications, Jackson Jones & Price, May 24, 1983: US04385384 (174 worldwide citation)

A system for diagnosing and controlling operation of a plurality of modems, some located at a central site and others at various remote sites. A processor located at the central site selectively addresses microprocessor test and control units at each modem over a secondary channel. The microprocesso ...


2
Donald C O Connor, Juan E Farias, Raul F Fernandez: Data modem with adaptive synchronized speed change. Racal Data Communications, Jerry A Miller, October 25, 1988: US04780883 (58 worldwide citation)

A method for changing the data transmission rates in a synchronous data communication system including a first modem and a second modem coupled together through a transmission channel, the transmission channel including a first path for transmissions from the first modem to the second modem and a se ...


3
Donald C O Connor: Facilitating Protection Of A Maintenance Entity Group. Fujitsu Network Communications, Baker Botts, November 5, 2009: US20090276830-A1

According to one embodiment, maintenance points of a maintenance entity group are identified. The maintenance points comprise end points and intermediate points. A secure connectivity association set is established for the maintenance points. The following is performed for each frame of a number of ...