In the second half of the 1890s a bigger effort was made to connect the town of Teltow with a fully developed railway. Applications were sent to the "Königliche Eisenbahn-Direktion Halle" (Royal Railway Division of Halle), which was responsible for the Anhalt Railway. Once part of the required land was handed over by the town and of the surrounding landowners to the railway company free of charge, construction work could begin. Teltow station was opened for all traffic on 1 October 1901. The volume of traffic developed well with freight rising especially quickly. The station was served from the beginning by all passenger trains operating on the line, which amounted to ten to twelve trains in each direction in 1904. The "Teltower Industriebahn" (Teltow Industrial Railway, later the "Teltower Eisenbahn"—Teltow Railway) was opened in 1909, connecting the station to various industrial companies in the town and to the port opened in 1906 on the Teltow Canal. In the early 1910s, the station trackwork and the station building were extended. In 1923, responsibility for the railway facilities in Teltow was transferred from the Reichsbahn railway division ("Reichsbahndirektion") of Halle to the railway division of Berlin. Moreover, there were plans for the quadruplication of the Anhalt Railway in the Teltow area in order to create separate suburban tracks. The town of Teltow gradually developed towards Teltow station, which it reached by the 1930s. Berlin suburb fares were extended to Teltow in 1938. As part of the Nazis' Welthauptstadt Germania plan, which was partly based on earlier plans, there were a variety of plans in the 1930s to transform the railway yards in the Berlin area, some affecting the Teltow area. Some of these projects were approved for construction. A new marshalling yard was planned in Großbeeren, which would extend between Großbeeren station and Teltow station on the east side of the tracks of the Anhalt Railway. Instead of implementing old plans for a bypass railway south of Berlin, it was planned to build the Outer Freight Ring ("Güteraußenring") on a route that ran further north than the Outer Ring ("Außenring") that was built later. The provisional Outer Freight Ring between Teltow station and Biesenhorst (west of Kaulsdorf station on the Eastern Railway) was opened on 16 December 1940.