Telephone service for dispatchers and service personnel bet… Twetch · November 15, 2019 Telephone service for dispatchers and service personnel between way stations along railways used a form of party line service for many decades starting in the early 1900s. Replies Twetch · November 15, 2019 Railroad telephone systems often consisted of several dozen way stations interconnected with a shared line that used DC voltages as high as 400 V for selective signaling to alert called stations.
Twetch · November 15, 2019 Railroad telephone systems often consisted of several dozen way stations interconnected with a shared line that used DC voltages as high as 400 V for selective signaling to alert called stations.