Transcription of PROPOSAL FOR SERIAL DATA INTERFACE FOR …
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ESPA Nov 1984. PROPOSAL FOR SERIAL DATA INTERFACE FOR PAGING EQUIPMENT. CONTENTS. 1. INTRODUCTION. 2. CHARACTER DESCRIPTION. CHARACTER STRUCTURE. THE CHARACTER SET. control CHARACTERS. Transmission control characters Information separator characters TRANSMISSION control PREFIXES. 3. THE PROTOCOL. POLLING. SELECTING. TERMINATION. EXAMPLES OF POLL & SELECT SEQUENCE. TRANSFER OF DATA BLOCKS. EXAMPLE OF TRANSMISSION OF BLOCKS OF DATA. 4. DATA BLOCK DESCRIPTION. BLOCK STRUCTURE. HEADERS. RECORDS. EXAMPLES OF TRANSACTIONS. 5. HARDWARE SPECIFICATION. DEFINITION OF INTERCHANGE CIRCUITS. ELECTRICAL CHARACTERISTICS. CONNECTOR SPECIFICATION. AUDIO SIGNALS. BAUD RATES.
ESPA 4.4.4 Nov 1984 3. THE PROTOCOL The protocol used conforms to International Standard ISO 1745 “Information processing- Basic mode control procedures for data communication systems”.
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