This was the origin of the Creed High Speed Automatic Printing System, which could run at an unprecedented 200 words per minute. His system was adopted by the Daily Mail for daily transmission of the newspaper's contents. The Creed Model 7 page printing teleprinter was introduced in 1931 and was used for the inland Telex service. It worked at a speed of 50 baud, about 66 words a minute, using a code based on the Murray code. A teleprinter system was installed in the Bureau of Lighthouses, Airways Division, Flight Service Station Airway Radio Stations system in 1928, carrying administrative messages, flight information and weather reports. By 1938, the teleprinter network, handling weather traffic, extended over 20,000 miles, covering all 48 states except Maine, New Hampshire, and South Dakota. Ways in which teleprinters were used There were at least five major types of teleprinter networks: Exchange systems such as Telex and TWX created a real-time circuit between two machines, so that anything typed on one machine appeared at the other end immediately. US and UK systems had telephone dials, and prior to 1981 five North American Numbering Plan (NANPA) area codes were reserved for teleprinter use. German systems did "dialing" via the keyboard. Typed "chat" was possible, but because billing was by connect time, it was common to prepare messages in advance on paper tape and transmit them without pauses for typing. Leased line and radioteletype networks arranged in point-to-point and / or multipoint configurations supported data processing applications for government and industry, such as integrating the accounting, billing, management, production, purchasing, sales, shipping and receiving departments within an organization to speed internal communications. Message switching systems were an early form of E-mail, using electromechanical equipment. See Telegram, Western Union, Plan 55-A. Military organizations had similar but separate systems, such as Autodin. Broadcast systems such as weather information distribution and "news wires", which were received on "wire machines". Examples were operated by Associated Press, National Weather Service, Reuters, and United Press (later UPI). Information was printed on receive-only teleprinters, without keyboards or dials. "Loop" systems, where anything typed on any machine on the loop printed on all the machines. American police departments used such systems to interconnect precincts. Teleprinter operation Most teleprinters used the 5-bit International Telegraph Alphabet No. 2 (ITA2). This limited the character set to 32 codes (25 = 32). One had to use a "FIGS" (for "figures")