14
C
HAPTER
1: I
NTRODUCTION
Applications
The primary applications for the Dual 56K LAN Modem are:
■
Local networking with shared, dial-out access to the Internet
■
Local networking with shared, dial-out access to a private network, such as a
remote corporate office LAN (this can include indirect Internet access through
the private network’s Internet connection)
■
Local networking with shared, simultaneous dial-out access to the Internet and
a private network
■
Combined dial-in and dial-out access for several possible networking scenarios
(refer to Chapter 8 for specific dial-in applications).
The following diagrams illustrate the primary Dual 56K LAN Modem applications:
Local Networking with
Shared Internet Access
Users can share access to the Internet while they continue to network locally, as
shown in Figure 1.
Figure 1
Local Networking with Shared Internet Access
Local Networking with
Shared Private Network
Access
Users can share access to a remote private network, such as a corporate office
LAN, while they continue to network locally. This can include indirect access to the
Internet through the private network’s Internet connection, as shown in Figure 2.
Figure 2
Local Networking with Remote Private Network Access
OfficeConnect
Dual 56K LAN Modem
Public telephone
network
Two analog POTs lines
Internet
Alert
Power
Message
RD
AA
CD
SD
OH
RD
AA
CD
SD
OH
OfficeConnect Dual 56k LAN Modem
1
TX
COLL
2
3
4
LAN Status
MODEM 2
MODEM 1
OfficeConnect
Dual 56K LAN Modem
Private network
Public telephone
network
Two analog POTS lines
Dedicated or
leased line
connection
Mor
e c
onnec
ted
3
Com
Sta
tus
Re
set
TX
D
D
1 2
1
2
4
3
1/2
3/4
3 4
RX
TX
LK
RX
LA
N
Re
mo
te
Ac
ces
s S
yst
em
15
00
WA
N
CO
Po
we
r
BR
I IS
DN
U
AN
AL
OG
SL
OT
1
SL
OT
2
ST
AC
KN
ET
CO
NS
OL
E
SU
PE
R
ST
AC
K
3
Com
Alert
Power
Message
RD
AA
CD
SD
OH
RD
AA
CD
SD
OH
OfficeConnect Dual 56k LAN Modem
1
TX
COLL
2
3
4
LAN Status
MODEM 2
MODEM 1
Internet
Summary of Contents for U.S. Robotics 56K Voice
Page 10: ...GLOSSARY 3COM CORPORATION LIMITED LIFETIME WARRANTY REGULATORY AND APROVAL INFORMATION...
Page 30: ...30 CHAPTER 2 DUAL 56K LAN MODEM FUNCTIONALITY DESCRIPTION...
Page 46: ...46 CHAPTER 4 INSTALLING THE DUAL 56K LAN MODEM...
Page 58: ...58 CHAPTER 5 CONFIGURING THE DUAL 56K LAN MODEM FOR INTERNET ACCESS...
Page 124: ...124 CHAPTER 9 PLACING RECEIVING AND DISCONNECTING CALLS...
Page 136: ...136 CHAPTER 10 TROUBLESHOOTING AND MAINTENANCE...
Page 146: ...146 APPENDIX A NETWORKING PRIMER...
Page 154: ...154 APPENDIX D FACTORY DEFAULTS...
Page 156: ...156 APPENDIX E SPECIFICATIONS...
Page 166: ......