3Com Dual 56K manual Applications, Local Networking with

14CHAPTER 1: INTRODUCTION

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	Users can share access to the Internet while they continue to network locally, as
Shared Internet Access	shown in Figure 1.

OfficeConnect

Dual 56K LAN Modem

		Public telephone	Internet
MODEM 1MODEM 2	LAN Status	network
		Two analog POTs lines

Figure 1 Local Networking with Shared Internet Access

Local Networking with Users can share access to a remote private network, such as a corporate office Shared Private Network LAN, while they continue to network locally. This can include indirect access to the

Access Internet through the private network’s Internet connection, as shown in Figure 2.

Internet

OfficeConnect
Dual 56K LAN Modem
		Public telephone
MODEM 1MODEM 2	LAN Status	network
			Dedicated or
			leased line
			connection
	Two analog POTS lines		Private network

Figure 2 Local Networking with Remote Private Network Access