North American Numbering Plan usually shown in capital letters, were dialed. Later, the third letter, where implemented, was replaced by a digit, or an extra digit was added. This generally happened after World War II, although New York City converted in 1930. The adoption of seven-digit local numbers (2L-5N) was chosen as the requirement for direct distance dialing and progressively deployed starting the late 1940s. The famous Glenn Miller tune "PEnnsylvania 6-5000" refers to telephone number PE6-5000, a number still in service at the Hotel Pennsylvania (212 736-5000) in New York. Similarly, the classic film "BUtterfield 8" is set in the East Side of
Glenn Miller discography with the Army Air Forces Training Command Band in several different versions and was recorded for release as a V-Disc. A V-Disc test pressing was made from the November 10, 1945 recording of "7-0-5". The title "7-0-5" refers to the number of the score in the Glenn Miller music library. Each score had a number in the system that Miller and his arrangers devised. It was published as "Rock and Ride". The other titles that were used for the composition included "Goofin' Off" and "Jivin' the Blues". No title was decided upon so the score number was retained. "7-0-5" was