14 CHAPTER 1: INTRODUCTIONApplications 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 aremote corporate office LAN (this can include indirect Internet access throughthe private network’s Internet connection) Local networking with shared, simultaneous dial-out access to the Internet anda 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 withShared Internet AccessUsers can share access to the Internet while they continue to network locally, asshown in Figure 1.Figure 1 Local Networking with Shared Internet AccessLocal Networking withShared Private NetworkAccessUsers can share access to a remote private network, such as a corporate officeLAN, while they continue to network locally. This can include indirect access to theInternet through the private network’s Internet connection, as shown in Figure 2.Figure 2 Local Networking with Remote Private Network AccessOfficeConnectDual 56K LAN ModemPublic telephonenetworkTwo analog POTs linesInternetAlert PowerMessageRDAA CD SD OH RDAA CD SD OHOfficeConnect Dual 56k LAN Modem1TX COLL 2 3 4LAN StatusMODEM 2MODEM 1OfficeConnectDual 56K LAN ModemPrivate networkPublic telephonenetworkTwo analog POTS linesDedicated orleased lineconnection More connected3 ComStatusResetTXDD1 212431/23/4 3 4RXTXLKRXLANRemote Access System 1500WAN COPowerBRI ISDN UANALOGSLOT 1SLOT 2STACKNETCONSOLESUPERSTACK3ComAlert PowerMessageRDAA CD SD OH RDAA CD SD OHOfficeConnect Dual 56k LAN Modem1TX COLL 2 3 4LAN StatusMODEM 2MODEM 1Internet
