Vanguard Managed Solutions Vanguard 342 - Manual (Page 36)

1-16 About the Vanguard 342
Target Applications
DSL/Cable Modem
Introduction The Vanguard 342 enables connectivity to high-speed broadband services such as
DSL and Cable by connecting the 10/100BaseT port on the Vanguard 342 to the
Ethernet port on the DSL or Cable modem.
Cable modem speeds vary in the downstream direction. Network speeds can reach
27 Mbps., but this is an aggregate amount of bandwidth that is shared by users. Few
computers will be capable of connecting at such high speeds, so a more realistic
number is 1 to 3 Mbps. In the upstream direction speeds can be up to 10 Mbps. Most
modem producers have selected a more optimum speed between 500 Kbps and 2.5
Mbps.
Figure 1-7. LAN Over WAN (DSL/Cable Modem)
Head Office
Remote Branches
PBX
342 6435
VANGUARD
Sales,
Marketing,
Engineering
10/100
auto-sensing
DSL/Cable
Modem
LAN 1 LAN 2
HR and
Finance