Each DSIF station had transmit and receive capability at 960 MHz in the L-band of the radio spectrum, and could process telemetry. Telephone and teletype circuits linked the stations to a mission operations room at JPL. As missions became more numerous the operations room developed into the Space Fight Operations Facility (which was designed a national historic landmark in 1985), and the personnel and equipment common to all missions were incorporated into the DSIF which was renamed the Deep Space Network in 1963.