3Com U.S. Robotics 56K Voice, Руководство пользователя

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Applications 15
Local Networking with
Shared Access to the
Internet and a Private
Network
Users can share simultaneous access to both the Internet and a remote private
network while they continue to network locally, as shown in Figure 3.
Figure 3 Local Networking with Shared Access to the Internet and a Remote Private
Network
Combined Dial-in and
Dial-out Access
Users can share access to the Internet or a remote private network and continue to
network locally, while a user dials in for access to a server or servers on the LAN, as
shown in Figure 4. (Other dial-in scenarios are possible. Refer to Chapter 8 for
specific applications.)
Figure 4 Local Networking and Dial-out Access with Dial-in Support
OfficeConnect
Dual 56K LAN Modem
Private network
Public telephone
network
Two analog POTS lines
Mo re co nnec 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
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
Public telephone
network
Two analog POTs lines
Dial-in modem user
Server
Workstation
Workstation
Workstation
Internet
or
private network
Alert
Power
Message
RD AA CD SD OH RD AA CD SD OH 1 TX COLL 2 3 4
OfficeConnect Dual 56k LAN Modem
LAN Status MODEM 2 MODEM 1