If you haven't worked with
T1 before, you could be in for
an unpleasantsurprise. If you have, you'll already know
that T1, the current
network standard for business and
professional Internet access, is neither efficient, easy to
use, nor particularly well-suited to
data transmission.
T1: A Survival Guide, a practical, applied reference
on T1 data transport, is a life raft for navigating the
shoals of a 40-year-old technology originally designed for
AT&T's voice network.
Throughout T1's long life, network administrators have
mainly learned it by apprenticeship, stumbling on
troubleshooting tidbits and filing them away until they
were needed again. This book brings together in one
reference the information you need to set up, test, and
troubleshoot T1. T1: A Survival Guide covers the
following broad topics:
- What components are needed to build a T1
line, and how those components interact to transmit data
effectively
- How to use standardized link layer
protocols to adapt the T1 physical layer to work with data
networks
- How to troubleshoot problems and work with
the telephone company, equipment manufacturers, and
Internet service providers
In spite of its limitations, T1 is a proven, reliable
technology that currently meets the need for medium-speed,
high reliability Internet access by institutions of many
sizes, and it's likely to be around for a while. T1: A
Survival Guide will take the guesswork out of using T1
as a data transport.
Contents
- Preface
- 1: History of the U.S. Telephone Network
- 1876-1950: Analog Beginnings
- 1951-1970: The Birth of T-carrier
- 1970-Present: The Modern Telephone Network
- 2: T1 Architectural Overview
- Telecommunications Puzzle Pieces
- 3: Basic Digital Transmission on Telephone
Networks
- Introduction to DS0
- Alternate Mark Inversion
- B8ZS and Clear Channel Capability
- 4: Multiplexing and the T-carrier Hierarchy
- Building the T-carrier Hierarchy with Multiplexing
- The Original Superframe
- The Extended Superframe (ESF)
- Telephone Signaling on T1 Links
- 5: Timing, Clocking, and Synchronizationin the
T-carrier System
- A Timing Taxonomy
- T1 Circuit Timing
- Slips: When Timing Goes Bad
- 6: Mysteries of the CSU/DSU
- Line Build Out: Moving Between Theory and Practice
- T1 CSU/DSUs
- CSU/DSU Configuration
- Summary of Settings
- 7: Connecting the Umbilicus: Getting T1
Connectivity
- Ordering
- T1 Installation and Termination
- Pre-Connection Tasks
- Trading Packets
- Post-Connection
- 8: High-Level Data Link Control Protocol
(HDLC)
- Introduction to HDLC
- HDLC Framing
- Cisco HDLC
- 9: PPP
- Introduction to PPP
- PPP Logical Link States and State Machines
- PPP Encapsulation and Framing
- Link Control Protocol (LCP)
- PPP Network Control and the IP Control Protocol
- Configuring PPP
- 10: Frame Relay
- Frame Relay Network Overview
- The Frame Relay Link Layer
- Multiprotocol Encapsulation with RFC 1490
- The Local Management Interface
- Configuring Frame Relay
- 11: T1 Troubleshooting
- Basic Troubleshooting Tools and Techniques
- Troubleshooting Outline
- Physical Layer Problems
- Link Layer Problems
- A: Access Aggregation with cT1 and ISDN PRI
- B: Multilink PPP
- C: T1 Performance Monitoring
- D: SNMP
- E: Cable Pinouts and Serial Information
- F: Reference
- Glossary
- Index