Numpty router question!
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Discussion

mongoose

Original Poster:

4,360 posts

285 months

Monday 27th March 2006
quotequote all
Hi all,i'd just like to ask if you can use a wireless router on a dial up connection?Or is there a similar device to routers which is specificaly for dial up?
Many thanks,Mike

annodomini2

6,971 posts

281 months

Monday 27th March 2006
quotequote all
Nope, you'd need to dial in on a pc, and network the other pc's and share the connection.

Why, would be my only question?

Routers act as an interface to a built in ADSL modem in integrated units, you may be able to get an ISDN interface to a router, but probably for the cost you may aswell pay for DSL.

zumbruk

7,848 posts

290 months

Monday 27th March 2006
quotequote all
Contrary to what the previous poster has said, most of which was wrong ...

A router routes packets between different networks, based on routing information, which may be statically or dynamically updated. A router can have multiple interfaces, although domestic ADSL ones tend only to have 2 - the ADSl itself and either an Ethernet, USB or wireless hub. How it connects to those networks is an implementation issue. High end professional routers have the ability to have many different kinds of interface plugged into them and route between them.

One of the kinds of interface a router can have is called "dial on demand" (DoD), where the router establishes a connection when it is required and knocks it down when it isn't. The "users" of the router think that the connection is permanent, even though it isn't. It is entirely possible for a DoD connection to be established over analogue dialup, although the setup times and poor bandwidth make this unusual. Usually, these links are used as contingency over ISDN when a leased line has failed. Before I got broadband, I had a DoD ISDN link using the builtin ISDN on a Sun SPARCstation 20, before that using a Cisco 1003 ISDN router and before I had ISDN, I used DoD software on a Unix box to drive an analogue modem. None of this nonsense of having to manually establish links before you could use them - just fire up the browser (or whatever), the modem dials, and there you are connected.

I know of no domestic wireless router that implements DoD, although you could easily build one using a Linux box, DoD software to drive an analogue modem and an appropriate wireless card/access point. Run a firewall on the Linux machine, and you've a nice little DoD router/firewall.