Multiline concentrator apparatus

SINCE February 1949, the Western Union Telegraph Company has installed main office facsimile concentrator apparatus and associated patrons' telefax equipment in eight cities: Atlanta, Cincinnati, Dallas, Houston, Los Angeles, New York, Philadelphia, and San Francisco. Some 1,900 patrons, using the new Desk-Fax transceivers,^1,2 are connected to the nearest telegraph office. The multiline concentrator apparatus designed for this service consists of one or more concentrator operating tables (Figure 1) each with a 50-line turret, and one apparatus cabinet, located in a less busy section of the floor, for every two operating tables.