Two DSL Modems At Home

**mbaldridge** · May 2nd, 2002, 12:59 PM

Here is the situation: I have one dsl line at my house. The way I understand it is that I should be able to connect my dsl modem to any phone jack throughout my house. My wife wants to connect her laptop to the dsl as well. I do not have the ability to run network cable & hook up jacks throughout the house & am looking for the quickest solution. I have two dsl modems, one is usb and the other has an ethernet port. I am wondering if I can not hook up both modems (the usb is already hooked up), and hook the usb to my laptop in one room, and then take my wifes laptop to the other part of the house and connect the other usb modem to the phone jack there, and then connect my wifes laptop to the ethernet jack on the 2nd dsl modem. Will this work???

**DiR[ëctory]** · May 2nd, 2002, 01:12 PM

<blockquote>quote:<hr />Originally posted by mbaldridge:
Here is the situation: I have one dsl line at my house. The way I understand it is that I should be able to connect my dsl modem to any phone jack throughout my house. My wife wants to connect her laptop to the dsl as well. I do not have the ability to run network cable & hook up jacks throughout the house & am looking for the quickest solution. I have two dsl modems, one is usb and the other has an ethernet port. I am wondering if I can not hook up both modems (the usb is already hooked up), and hook the usb to my laptop in one room, and then take my wifes laptop to the other part of the house and connect the other usb modem to the phone jack there, and then connect my wifes laptop to the ethernet jack on the 2nd dsl modem. Will this work???<hr /></blockquote>I am not sure exactly how DSL works, never used it before or know anyone who does, (just cable around here)

If you have to dial up to make a connection this will not work (as far as I know)

If there is no need to dial i can't see why this wouldn't work.

Heck just go try it!

P.S.

You might want to wait for expert advice

**Stalemate** · May 2nd, 2002, 01:19 PM

That's an interesting premise.

I'd be curious to try the same thing (I have ADSL at home), but the technical aspect of it eludes me too.

I can guess there will be some adaptation to be made in regards to the way the connection is initiated to the ISP, but I can't see how yet as that is still a mystery to me (OK, I was just too lazy to care about it

).

**Matridom** · May 2nd, 2002, 01:38 PM

It depends on your service provider.

For example.. I could do it(see below for exception). My service provider allows my username/password to access up to 3 IP address. HOW i access those should not matter. Now the only complication i could see is that the signals from one modem conflict with the other modem (kinda like dialup). If i where you, I'd call your ISP and ask them. They will be the best qualified to answer that.

I know that multiple cable modems can share a media, DSL, i've never actualy tried.

**silencio** · May 2nd, 2002, 01:55 PM

I don't how DSL is working exactly (I think it's running two downstream and one upstream frequency) but, I know this for sure, you can't run the same frequency over the same line in multiple instances. In order to accomplish something like that you need to do time or frequency division multiplexing.

Frequency division means that you have one signal running at 100hz, one at 1000hz and one at 10000hz. You may also have guardband frequencies running between those (at 500hz, 5000hz) for example. Time division muxing means that you put a concenetrator or MUX on both ends of the line and you turn both bitstreams into one. A T1 is just a 24 channel circuit.

Or, you run another line into your house. Is it worth the cost compared to running some cable or a wireless hub and NICs?

**WebHead** · May 2nd, 2002, 03:38 PM

You can only have one connection at a time. In fact, while DSL is connected, you can't even dialup with a 56K connection through that line. Instead, you need to share that connection with a router and a switch. Tis the only way my friend.

**Matridom** · May 2nd, 2002, 06:12 PM

<blockquote>quote:<hr />Originally posted by WebHawg:
You can only have one connection at a time. In fact, while DSL is connected, you can't even dialup with a 56K connection through that line. <hr /></blockquote>DSL connected, i can't dial out with a voice modem? Are you sure? I know i've DONE it. I was redoing the OS on the girlfriends computer the other day and needed to update some software, so i used dial up(no nic) i even got the full 56k...

**Stalemate** · May 2nd, 2002, 08:10 PM

If I hadn't sold my USR 56K external I'd try it out - but it left my house the day after I got DSL

**Matridom** · May 2nd, 2002, 08:11 PM

<blockquote>quote:<hr />Originally posted by a d e p t:
If I hadn't sold my USR 56K external I'd try it out - but it left my house the day after I got DSL

<hr /></blockquote>my computer does not have a modem either.. but i have a nice hardware based PCI 56k USR modem siting on my desk...

**WebHead** · May 2nd, 2002, 10:31 PM

<blockquote>quote:<hr />Originally posted by Matridom:
 <blockquote>quote:<hr />Originally posted by WebHawg:
You can only have one connection at a time. In fact, while DSL is connected, you can't even dialup with a 56K connection through that line. <hr /></blockquote>DSL connected, i can't dial out with a voice modem? Are you sure? I know i've DONE it. I was redoing the OS on the girlfriends computer the other day and needed to update some software, so i used dial up(no nic) i even got the full 56k...<hr /></blockquote>Ok,.. It probably can be done, but good luck having any DSL connectivity while your dialed up on 56k. And I've tried that too, but then you also get real low connection speeds on 56k while dialing up during DSL connectivity. Or something.

**DocPC** · May 3rd, 2002, 08:46 AM

Why not go wireless? Doesn't cost much any more. Linksys WAP and the attending cards can be had for around $300.00 USD.

I've played with this setup and have had very good luck with it.

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