
A
N
ETWORKING
P
RIMER
This chapter provides a description of basic networking concepts and terminology
to help you better understand the key functionality of the ISDN LAN Modem.
What is a network?
A network is a set of computers and other devices such as printers, modems, and
scanners that are connected together either directly via physical cables or indirectly
via dial-up telephone services. A network can be in the same room, the same
building covering a local area, or geographically dispersed covering a wide area.
What is a LAN?
A Local Area Network (LAN) is two or more computers linked together in a
contained location such as an office building. By linking the computer together,
and creating a LAN, users can share files and share access to printers.
To physically create a LAN, each computer must be linked together using some
type of cabling. Typically, Ethernet cabling is used. There are three main types of
Ethernet networks: 10BASE-T, 10BASE-2 and 10BASE-5. The ISDN LAN Modem
supports four 10BASE-T connections.
A 10BASE-T Ethernet network is used in small networks with only a few dozen
devices closely located. The physical connection for a 10BASE-T Ethernet network
is over a twisted pair cable. The connector used for 10BASE-T looks similar to the
connector used for your telephone. A 10BASE-5 Ethernet network is used in large
networks with many devices where transmissions occur over distant geographic
areas. A 10BASE-2 (Thin) Ethernet network is used in smaller networks with all
devices being relatively close together.
Figure 51
Example of a LAN
What is a WAN?
A Wide Area Network is the result of the connection of two or more LANs,
typically using dial up telephone services via a modem and usually over far
geographic distances.
10 Mbps Ethernet LAN
Networks That Go the Distance
3
Com
Summary of Contents for OfficeConnect 3C892A
Page 8: ......
Page 14: ......
Page 22: ...16 CHAPTER 1 INTRODUCTION ...
Page 32: ...26 CHAPTER 2 ISDN LAN MODEM FUNCTIONALITY DESCRIPTION ...
Page 42: ...36 CHAPTER 3 HARDWARE DESCRIPTION AND INSTALLATION ...
Page 52: ...46 CHAPTER 4 SETTING UP TCP IP FOR WINDOWS AND MACINTOSH ...
Page 64: ...58 CHAPTER 5 CONFIGURING THE ISDN LAN MODEM ...
Page 90: ...84 CHAPTER 7 SUPPLEMENTARY VOICE CALL SERVICES ...
Page 96: ...90 CHAPTER 8 PLACING RECEIVING AND DISCONNECTING CALLS ...
Page 114: ...108 APPENDIX A NETWORKING PRIMER ...
Page 118: ...112 APPENDIX C ISDN LAN MODEM FACTORY DEFAULTS ...
Page 122: ...116 APPENDIX D ISDN LAN MODEM SPECIFICATIONS ...
Page 126: ...120 GLOSSARY ...
Page 128: ...122 INDEX ...