BS 4505-2 is the second part of the multiple series that specifies the character structure to be used for serial-by-bit start/stop and synchronous data transmission systems using the 7-bit coded character set which is the subject of ISO 6461), the 8-bit coded character set which is the subject of ISO 4873 and extensions to these coded character sets which are the subject of ISO 2022.
BS 4505-2 also specifies the parity sense to be used with the 7-bit coded character set.
BS 4505-2 on character structure for start/stop and synchronous transmission is useful for:
Synchronous transmission is a data transfer method characterised by a continuous stream of data in the form of signals accompanied by regular timing signals provided by an external clocking system to ensure that the transmitter and receiver are in sync.
BS 4505-2 specifies bit sequencing, parity bit, parity sense for start/stop and synchronous operation, DTE reaction to parity error, start/stop operation, and synchronous operation. This will help you to transfer a large amount of data and reduces time timing errors.
Overall, BS 4505-2 assists you with the information transfer through the interface standardized by CCITT and IEC/ISO between the data terminal equipment, DTE, and data circuit-terminating equipment, DCE, as defined in the relevant CCITT V and X series Recommendations.
ISO 1177