Data Communications Pocket Book

Abbreviations Commonly Used in Data CommunicationsAbbreviations Used for Advisory Bodies and Other OrganizationsManufacturers' Prefixes for Semiconductor DevicesCCITT RecommendationsCCITT G-Series RecommendationsCCITT I-Series RecommendationsCCITT V-Series RecommendationsCCITT X-Series RecommendationsInternational Alphabet No. 2 (IA2)Extended Binary Coded Decimal Interchange Code (EBCDIC)EBCDIC Standard Code TableEBCDIC Control CharactersInternational Alphabet No. 5 (IA5)IA5 Standard Code TableIA5 Control CharactersRepresentative Teletype Keyboard Layout (IA2)Representative Personal Computer Keyboard LayoutTerminal Control CodesCommonly Used Control Characters (with Keyboard Entry)Decimal, Binary, Hexadecimal and ASCII Conversion TablePowers of 2Powers of 16Parallel I/O DevicesInternal Architecture of a Representative Parallel I/OInternal Registers of a Programmable Parallel I/O DeviceCPU Interface to a Programmable Parallel I/O DeviceIEEE-488 Interface StandardIEEE-488 Bus SignalsMultiline CommandsIEEE-488 Bus ConfigurationIEEE-488 SoftwareIEEE-488 ProgrammingSerial I/O DevicesParallel to Serial Data ConversionSerial to Parallel Data ConversionInternal Architecture of a Representative Serial I/OCPU Interface to a Programmable Serial I/O DevicePopular VLSI Support DevicesPin Connections for Popular Programmable Parallel I/O DevicesCentronics Printer InterfaceCentronics Interface Pin ConnectionsSerial Data TransmissionPin Connections for Popular Programmable Serial I/O DevicesRS-232RS-232D Signals and FunctionsSubset of the Most Commonly Used RS-232 SignalsRS-232 WaveformsRS-232 Electrical CharacteristicsRS-232 Logic and Voltage LevelsSimplified Arrangement of a Microcomputer RS-232 InterfaceRS-232 EnhancementsRS-422RS-422 Logic and Voltage LevelsRS-423RS-449RS-423 Logic and Voltage LevelsElectrical Characteristics of Popular Interface SpecificationsRS-232 Data CablesMale and Female 25-Way D-connectors for RS-232RS-232 Pin ConnectionsRS-449 Pin ConnectionsRS-232 Signals and Pin ConnectionsS5/8 Interface StandardLine Drivers and Line ReceiversLine Driver and Line Receiver Pin ConnectionsBasic Logic GatesLogic Circuit EquivalentsMixed Logic EquivalentsTypical Links between ComputersTypical Null Modem ArrangementsModemsSimplified Block Schematic of a ModemModem Signal FrequenciesV21 Frequency Spectrum (300/300 Baud)V21 Channels for 300/300 BaudPermitted Frequency Spectrum (BS 6305)Modem Connecting MethodsDTMF Digits and Tone PairsTransmitter Carrier and Signaling Frequency SpecificationsLine Signal Encoding (V26A and V26B)Differential Two-phase Encoding (V26bis)Differential Four-phase Encoding (V26A and V26B/Bell 201)Typical Bit Error Rate Performance for a ModemData Communications Test EquipmentFault finding on RS-232 SystemsCommunication ProtocolsThe ISO Model for Open Systems InterconnectionFlow ControlX-ON/X-OFF Flow ControlXMODEM ProtocolXMODEM/CRC ProtocolKermitKermit TransactionsKermit Packet formatKermit CommandsCCITT X.25X.