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--	Copyright 
 1994 The Saratoga Group
--	Portions 
 1991 Asymetrix Corporation
--	Authors:
Debra Savage, Steve Randesi
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Click on a topic to select it.  Then click the forward arrow.the forward arrow.rrow.......
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 Topic Indexxdexxxxxxxxxxx
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1.0  A Tour of the Internet
       1.1  What is the Internet?
       1.2  How Do I Connect to the Internet?
       1.3  Why Should I Use the Internet?
2.0  Touring with Internet In A Box
       2.1  Using SPRY Mosaic
       2.2  Using SPRY Mail
       2.3  Using SPRY News
       2.4  Using Network File Manager
       2.5  Using SPRY Gopher
       2.6  Using SPRY Telnet
       et In A Box Wizard
              2.1.5  Using Hotlists
              2.1.6  What is a URL?
              2.1.7  How Can I Find URL's?
              2.1.8  Basic Internet Services
              2.1.9  Viewers
       2.2  Using SPRY Mail
                ERV
        5.8    Usenet
        5.9    Finger
        5.10  Whois   5.10  Whois 
        5.12 
               5.12.4  Connections
                5.12.5  Beyond Software Packages - AT Configuration 
                5.12.6  Setting Up Modems for Other Devices
        5.13 Connecting a PC Modem to a Wide Area Network
        5.14 Connecting a Router to a Wide Area Network
        5.15 Installing a DSU/CSU
                5.15.1  DTE to DCE Interface Cable
                5.15.2  Rack-mount or Freestanding
                5.15.3  Telephone Line Connection
                5.15.4  Configuration Switches
                5.15.5  Data Rate
                5.15.6  Timing Options
                5.15.7  Interface Options
                5.15.8  Carrier and CTS Options
                5.15.9  DSR Options
                5.15.10 Test Options
                5.15.11 Power Up
                5.15.12 Check-Out Test
        5.16 Summary
6.0  Troubleshooting Modems and DSU/CSUs
       6.1  Typical Communications Problems
       6.2  Modem Front Panel Indicators
              6.2.1  Modem Ready (MR)
              6.2.2  Terminal Ready (TR)
              6.2.3  Send Data (SD)
              6.2.4  Receive Data (RD)
              6.2.5  Off Hook (OH)
              6.2.6  Carrier Detect (CD)
              6.2.7  Auto Answer (AA)
              6.2.8  High Speed (HS)
              6.2.9  Test Indicators
              6.2.10 Other Indicators
       6.3  Modem Self-Test
       6.4  Loopback Tests
              6.4.1  Local Digital Loopback
              6.4.2  Local Analog Loopback
              6.4.3  Local Analog Loopback With Pattern
              6.4.4  Remote Digital Loopback
              6.4.5  Remote Digital Loopback With Pattern
       6.5  Loopback Tests for DSU/CSUs
              6.5.1  Local Digital Loopback (DSU/CSU)
              6.5.2  Local Analog Loopback (DSU/CSU)
              6.5.3  Remote Digital Loopback (DSU/CSU)
       6.6  Data Communications Test Equipment
              6.6.1  The Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
Null Modem)
       6.9  Summary
he Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
     6.9  Summary
6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
uit (Null Modem)
       6.9  Summary
7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
odem)
       6.9  Summary
9  Summary
   6.9  Summary
    6.9  Summary
mmary
    6.9  Summary
 A Typical Crossover Circuit (Null Modem)
       6.9  Summary
       6.9  Summary
       6.9  Summary
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
 Modem)
       6.9  Summary
e Packages - AT Configuration 
                5.12.6  Setting Up Modems for Other Devices
        5.13 Connecting a PC Modem to a Wide Area Network
        5.14 Connecting a Router to a Wide Area Network
        5.15 Installing a DSU/CSU
                5.15.1  DTE to DCE Interface Cable
                5.15.2  Rack-mount or Freestanding
                5.15.3  Telephone Line Connection
                5.15.4  Configuration Switches
                5.15.5  Data Rate
                5.15.6  Timing Options
                5.15.7  Interface Options
                5.15.8  Carrier and CTS Options
                5.15.9  DSR Options
                5.15.10 Test Options
                5.15.11 Power Up
                5.15.12 Check-Out Test
        5.16 Summary
6.0  Troubleshooting Modems and DSU/CSUs
       6.1  Typical Communications Problems
       6.2  Modem Front Panel Indicators
              6.2.1  Modem Ready (MR)
              6.2.2  Terminal Ready (TR)
              6.2.3  Send Data (SD)
              6.2.4  Receive Data (RD)
              6.2.5  Off Hook (OH)
              6.2.6  Carrier Detect (CD)
              6.2.7  Auto Answer (AA)
              6.2.8  High Speed (HS)
              6.2.9  Test Indicators
              6.2.10 Other Indicators
       6.3  Modem Self-Test
       6.4  Loopback Tests
              6.4.1  Local Digital Loopback
              6.4.2  Local Analog Loopback
              6.4.3  Local Analog Loopback With Pattern
              6.4.4  Remote Digital Loopback
              6.4.5  Remote Digital Loopback With Pattern
       6.5  Loopback Tests for DSU/CSUs
              6.5.1  Local Digital Loopback (DSU/CSU)
              6.5.2  Local Analog Loopback (DSU/CSU)
              6.5.3  Remote Digital Loopback (DSU/CSU)
       6.6  Data Communications Test Equipment
              6.6.1  The Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
     6.9  Summary
.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
       6.9  Summary
ith Pattern
              6.4.4  Remote Digital Loopback
              6.4.5  Remote Digital Loopback With Pattern
       6.5  Loopback Tests for DSU/CSUs
              6.5.1  Local Digital Loopback (DSU/CSU)
              6.5.2  Local Analog Loopback (DSU/CSU)
              6.5.3  Remote Digital Loopback (DSU/CSU)
       6.6  Data Communications Test Equipment
              6.6.1  The Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
 Summary
odem)
       6.9  Summary
9  Summary
      6.9  Summary
      6.2.8  High Speed (HS)
              6.2.9  Test Indicators
              6.2.10 Other Indicators
       6.3  Modem Self-Test
       6.4  Loopback Tests
              6.4.1  Local Digital Loopback
              6.4.2  Local Analog Loopback
              6.4.3  Local Analog Loopback With Pattern
              6.4.4  Remote Digital Loopback
              6.4.5  Remote Digital Loopback With Pattern
       6.5  Loopback Tests for DSU/CSUs
              6.5.1  Local Digital Loopback (DSU/CSU)
              6.5.2  Local Analog Loopback (DSU/CSU)
              6.5.3  Remote Digital Loopback (DSU/CSU)
       6.6  Data Communications Test Equipment
              6.6.1  The Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
       6.9  Summary
 Summary
       6.9  Summary
ating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
       6.9  Summary
9  Summary
     6.9  Summary
est Equipment
              6.6.1  The Break Out Box
              6.6.2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
9  Summary
 Summary
         6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
   6.9  Summary
odem)
       6.9  Summary
       6.9  Summary
        6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
odem)
       6.9  Summary
odem)
       6.9  Summary
      6.9  Summary
Null Modem)
       6.9  Summary
       6.9  Summary
6.9  Summary
            6.7.4  Using Patch Points
              6.7.5  Using Special Cables
       6.8  Creating a Null Modem
              6.8.1  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
      6.9  Summary
2  LEDs
              6.6.3  Patch Points
              6.6.4  DIP Switches
       6.7  Break Out Box - Example
              6.7.1  Check Timing Circuits
              6.7.2  Check Data Terminal Ready
              6.7.3  Check Data Set Ready
              6.7.4  Check Received Data Circuit
              6.7.4  Using Patch Points
       6.8  Another Use of a Break Out Box
              6.8.1  Creating a Null Modem
              6.8.2  A Typical Crossover Circuit (Null Modem)
       6.9  Summary
Summary
 Circuit (Null Modem)
       6.9  Summary
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