TY - BOOK AU - Held, Gilbert TI - Understanding data communications SN - 672305011 AV - TK 5105 .H45 1994 PY - 1994/// CY - Indianapolis, Indiana PB - Sams Publishing KW - DATA TRANSMISSION SYSTEMS N1 - Includes bibliographical references and index; 1. An Overview of Data Communications -- 2. Terminal Devices -- 3. Messages and Transmission Channels -- 4. Asynchronous Modems and Interfaces -- 5. Synchronous Modems, Digital Transmission, and Service Units -- 6. Multiplexing Techniques -- 7. Fiber-Optic and Satellite Communications -- 8. Protocols and Error Control -- 9. Personal Computer Communications Software -- 10. Alternatives in Local Area Networks -- 11. Architectures and Packet Networks -- 12. Network Design and Management -- 13. ISDN N2 - This text teaches digital communications, the inner workings of data terminals, modems, fibre optics and satellites. It covers the fundamentals, the functions of data terminals and their components and the latest network architecture and design techniques ER -