adsl router and modem
Oz
Can someone explain the fundamental difference between an ADSL modem and
Router please?
When would I look to use a Router instead of a Modem and whatarethe features
and benefits of each?
Oz
Iain Dingsdale
"Oz" <O...@thelanddownunder.com> wrote in message
news:ae4dts$gl2$1...@pheidippides.axion.bt.co.uk...
An adsl MODEM is typically a USB or PCI connection, and is almost always
software based. a ROUTER is a network device that routes packets from an
external network to thier destination hosts within and internal network. An
adsl router contains an ADSL modem, and a router. Single port routers are
avaliable too.
Basically the advantages are:
1) Not software based, no slow down on the PC
2) No power drain from the PC
3) Does not require windows to work (linux, bsd, anything will work)
4) Easy sharing of the connection across the network
however, they are slightly more expensive, but are much much better than
standard modems
Slugsie
news:3d05bcd6$0$8510$cc9e...@news.dial.pipex.com...
don't have a modem, and will need to have a modem added.
--
</Slugsie> www.renold.org.uk
[paul_at_slugsie_dot_co_dot_uk]
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Oz
"Iain Dingsdale" <iain_di...@NOSPAMdsl.pipex.com> wrote in message
news:3d05bcd6$0$8510$cc9e...@news.dial.pipex.com...
>
curvy box with flashy lights on in all the marketing literature.
So is the Alcatel ADSL modem a software package with a pretty usb interface
to connect to the line?
If you had an ADSL router would it be a matter of connecting the Ethernet
card from your PC inot the ethernet interface on the router and configuring
the IP addresses?
Sounds like the router is the better option as you could get a built in
firewall bundled into some routers.
Oz
Iain Dingsdale
pretty much, yeh!
> If you had an ADSL router would it be a matter of connecting the Ethernet
> card from your PC inot the ethernet interface on the router and
configuring
> the IP addresses?
yep, just plug it in, set IP configuration to automatic, set up the user
name/password with web/telnet interface and away you go
Richard Tobin
Oz <O...@thelanddownunder.com> wrote:
>So is the Alcatel ADSL modem a software package with a pretty usb interface
>to connect to the line?
Not really. It's a fairly substantial piece of hardware with a
processor in it. Rather like an ordinary modem, it is responsible for
synchronizing with the other end of the phone line. It's certainly
much more than a "Winmodem" which may be little more than a DSP.
What it *doesn't* do is decode the ATM packets. These are passed over
the USB connection to the computer. The ATM packets contain PPP
packets. Decoding does not place much demand on a fast processor, but
there's probably a fair bit of latency in the system (most likely the
PPP packet does not start getting passed to the PPP code until it's
complete, and most likely it doesn't start passing the resulting IP
packets to the IP stack until they're complete).
-- Richard
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