Clocks & phones in Fremo
Many questions for RUT were answered in a lecture at Jahreshauptversammlung in Rheine. These are now written in a pdf sheet (German only).
Stefan Seibt has on the pages for Freundeskreis TT compiled a nice summary: TT-RUT
Article from the old FREMO website
The original article comes from Klaus Richrath, who unfortunately died. The article is stored here for archival purposes.
Requirements for operations points
For each station / operating point should be a phone. Whether they're impulse or tone regime is unimportant, telephone installations are then set.
The usual connector is a 6-pole Western plug (RJ11), where the middle 2 contacts Adern La and Lb, are taken from the phone. If your phone has a TAE socket, then there is usually achieved via an adapter connected to the RUT system.