Deutsche Telekom has joined Orange in testing the newly open sourced OCast software, developed by the French telco. OCast is a transmission protocol for transforming smartphones and tablets into platforms for viewing and controlling content on the big screen, in much the same manner as Google Cast. Orange is eager to say that it is not positioning Ocast as a direct competitor to Google’s popular cast technology, which is pre-installed on Android phones and also compatible with iPhones, and so has become the go-to source for casting videos to TV sets. But despite claims that the OCast software is not attempting to challenge Google, the similarities are obvious. This may be yet another example of an MNO trying to go…