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This article focuses on the proposed USA Standard, which presents control procedures for the data communication systems. This employs the USA Standard Code (SC) for Information Interchange. It is intended for systems that are controlled through the use of the communication control characters provided in USASCII. Other standards have been adopted or are being developed which prescribe the character structure, bit sequencing, signaling speed, message format, and other parameters vital to the communication of information in a data system. In the development of this standard both historical and present data communication practices were considered. In addition, consideration was given to the requirements for future systems and to the applicable standards being developed internationally. This standard is intended for systems that are controlled through the use of the communication control characters provided in USASCII. This standard specifies a variety of data communication control procedures to meet the needs of data communication links having different configurations or complexity.

The article discusses the challenges in transmitting computer data through the electrical communication network of the United States. Because of the need to transmit the data efficiently and at high speed, there is a need to make some changes to the network. Some type of coding system was also needed in order to use the communication channels more efficiently.

This article focuses on the proposed USA Standard for synchronous signaling rates for data transmission. This proposed USA Standard provides information on the transfer of data between data processing equipment and data communications equipments, which transmit the data over media commonly referred to as voice band. Subsequent standards will prescribe signaling rates for use at greater than voice bandwidth. The rates prescribed herein include the serial speeds in USA Standard X3.1-1902 and the parallel speeds in USA Standard X3.13-1966. This standard therefore replaces both of these previous USA Standards on Signaling Speeds. Future standards will be issued to define additional electrical parameters, which are vital to the interconnection and the transfer of data between the data processing equipment and the communication equipment. This standard provides a group of specific signaling rates for synchronous serial or parallel binary data transmission. These rates exist on the received data and transmitted data circuits of the interface between data terminal equipment and data communications equipment, which operate over nominal 4kHz voice bandwidth channels.