IT-320Chapter 9 WAN Technology Slide 2 Objectives 1. Identify
the purpose, features, and functions of the CSU/DSU, Modem, and
ISDN adapters. 2. Compare and contrast packet switching and circuit
switching. 3. List the characteristics, requirements, and
appropriate situations for ISDN connection services. 4. Identify
the basic characteristics for ISDN, SONET, SDH, T1/E1, T3/E3, OCx,
DSL, and Cable Modems. 5. Given a scenario, troubleshoot the serial
line. Slide 3 FIGURE 9-1 An Example of DTEs and DCEs. Patrick Regan
Wide Area Networks Copyright 2004 by Pearson Education, Inc. Upper
Saddle River, New Jersey 07458 All rights reserved. Slide 4 FIGURE
9-2 A Virtual Circuit Depicted as a Cloud Patrick Regan Wide Area
Networks Copyright 2004 by Pearson Education, Inc. Upper Saddle
River, New Jersey 07458 All rights reserved. Slide 5 FIGURE 9-3 UNI
and NNI Interfaces Patrick Regan Wide Area Networks Copyright 2004
by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All
rights reserved. Slide 6 FIGURE 9-4 A PSTN Patrick Regan Wide Area
Networks Copyright 2004 by Pearson Education, Inc. Upper Saddle
River, New Jersey 07458 All rights reserved. Slide 7 FIGURE 9-5 AMI
Bipolar Encoding Patrick Regan Wide Area Networks Copyright 2004 by
Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All
rights reserved. Slide 8 FIGURE 9-6 B8ZS Encoding Used by T-1 Lines
Patrick Regan Wide Area Networks Copyright 2004 by Pearson
Education, Inc. Upper Saddle River, New Jersey 07458 All rights
reserved. Slide 9 FIGURE 9-7 A Multiplexer on a T-1 Line Patrick
Regan Wide Area Networks Copyright 2004 by Pearson Education, Inc.
Upper Saddle River, New Jersey 07458 All rights reserved. Slide 10
FIGURE 9-8 TB1Q Used by BRI ISDN Patrick Regan Wide Area Networks
Copyright 2004 by Pearson Education, Inc. Upper Saddle River, New
Jersey 07458 All rights reserved. Slide 11 FIGURE 9-9 ISDN Network
Patrick Regan Wide Area Networks Copyright 2004 by Pearson
Education, Inc. Upper Saddle River, New Jersey 07458 All rights
reserved. Slide 12 FIGURE 9-10 SDH/Sonet Networks Use Dual Rings to
Provide Redundant Pathways Patrick Regan Wide Area Networks
Copyright 2004 by Pearson Education, Inc. Upper Saddle River, New
Jersey 07458 All rights reserved. Slide 13 FIGURE 9-11 LANs
connected to ISDN WAN links Patrick Regan Wide Area Networks
Copyright 2004 by Pearson Education, Inc. Upper Saddle River, New
Jersey 07458 All rights reserved.
