Vanguard 342 Manuel d'installation télécharger pdf (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 1LAN 2

HR and

Finance

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Vanguard 342 Manuel d'installation Page 36