The OSI (Open System Interconnection) reference model is the basis of modern data network design, but it underlines the public switched telephone network (PSTN) as well. For voice engineers learning how to send services over data networks, and for Internet engineers learning how to tap into the PSTN, the OSI model is an ideal point of reference. This book covers roles, functions, definitions and the fundamentals that are required of entry-level personnel.
Acknowledgments
Chapter 1: Overview
Chapter 2: Numbering Systems and Character Code Sets
Chapter 3: Physical Layer (Level 1) Protocols
Chapter 4: Physical Layer (Level 1) Topologies
Chapter 5: Physical Layer (Level 1) Signaling
Chapter 6: Data Link Layer (Level 2)
Chapter 7: Network Layer (Level 3)
Chapter 8: Network Layer (Level 3) Protocols
Chapter 9: X.25 Protocol Networks
Chapter 10: Packet-Switching Network Protocols
Chapter 11: Frame Relay
Chapter 12: Transport Layer (Level 4)
Chapter 13: Integrated Circuits Digital Network (ISDN)
Chapter 14: Asynchronous Transfer Mode (ATM)
Chapter 15: Digital Subscriber Line (DSL)
Chapter 16: Synchronous Optical Network (SONET)
Chapter 17: Transmission Control Protocol/Internet Protocol (TCP/IP) Index
Debbra Wetteroth (Saint Louis MO) is security manager for SBC Telecom's Information Services Department. Before joining the IS group, she spent 15 years in Central Office Engineering for a major telephone company. Debbra holds seven certifications in telecom engineering.
