1. DSL works by using line frequencies outside the audible range. Normally, DSL installations involve putting some sort of splitter on the line to separate the voice and DSL frequencies. (Currently, for example, here in California, SBC gives you a little kit with a bunch of filters, and you place on on each telephone connection to the line.) Since modems use audible frequencies, they coexist nicely with DSL.
2. Remember that you will need on the router a modem that works with Linux. Most cheap modems for PCs are so-called Winmodems and do not work with Linux. Check before you buy that you are getting either an internal modem with a real UART, one of the few WInmodem-type modems that have Linux support, or an external modem that works properly with a serial port.
3. I am currently editing an "PPP Server HowTo" being written by one of the LEAF developers (leaf.sourceforge.net). It should be available soon and will help you with the PPP part of your requirements (particularly if you use LEAF, but even somewhat if you do not and run into trouble). Check for it at the LEAF Website in a week or so.
At 08:48 AM 6/5/2003 -0500, James Miller wrote:
I suppose this is as much a telecommunications question as it is a Linux question. But there is at least a Linux component to it, so here goes. My dial-up ISP contract expires soon so I'm looking at other ISP options. One thing I'm considering is getting DSL to share with the neighbor downstairs - both cost and bandwidth. I think I would want to use an old machine with Freesco or some other Linux gateway/router distro to share the connection. One thing I'd also want to do though is to make the gateway/router accept incoming calls so I could log in from my office across town and use the 'net connection. From all I've gathered thus far, Freesco - and likely other Linux routers - can handle this (accepting incoming calls, establishing ppp communications and sharing a 'net connection). But my question really has to do with more fundamental aspects of how this all would work. Essentially, I'm talking about calling my own phone from another location, having the computer answer the call, then logging me on to that same line so that I can use it to surf the 'net. Sounds a bit self-serving, doesn't it? (har har) Anyway, the little I know about DSL tells me that this scheme should work. But before proceeding any further in it, I just want to check with others and see if they see any reason why it should not work. So, finally, my question: is there any reason I could not dial into a computer that is hooked up to a DSL line, using the same phone line through which the DSL signal is travelling, and have that computer then allow me to share its DSL connection to do things on the 'net?
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