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Matthieu Amiguet wrote:
> Hi,
>
> As my last posting didn't get any answer, I'll try te be more precise.
>
> I'm trying to get a ppp connection through my internal (win)modem. I tried wvdial and pppconfig. In both cases, it works sometimes, but most of the time it fails with a "no carrier" error. I don't know much about modems and ppp and chat and all, so I don't know what to do now...
>
> I really need my modem connection by the end of the week, so please somebody help me!
>
> I've got kernel 2.4.22, slmodem 2.9.10.
>
> Thank you in advance,
>
> Matthieu
>

If it works sometimes, then the problem would not seem to be your
configuration (if it was, then it would never work).

So it sounds like an intermittent hardware problem.

First idea: Is your ISP/phone line stable? Maybe the reason there's no
carrier is because there's no carrier. Check with the phone company as
to line noise. or work in the area that might be affecting your ability
to dial out.

Second idea: phone cables. Well and firmly connected on both ends? Not
damaged?

Third idea: the modem itself. Firmly seated in its slot?

Fourth idea: power. Got enough?

Hope this helps,
Holly


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> If it works sometimes, then the problem would not seem to be your
> configuration (if it was, then it would never work).

That's what I thought, too.

> First idea: Is your ISP/phone line stable? Maybe the reason there's no
> carrier is because there's no carrier. Check with the phone company as
> to line noise. or work in the area that might be affecting your ability
> to dial out.

I can connect without problem with another computer.

> Second idea: phone cables. Well and firmly connected on both ends? Not
> damaged?

Seem to be OK.

> Third idea: the modem itself. Firmly seated in its slot?

Well... internal modem in a laptop. Not so easy to check...

> Fourth idea: power. Got enough?

I guess it has... again, it's the built-in internal modem in an IBM laptop.

Thank you for your ideas... I've got another similar laptop round here. I'll try that one to see if it can be a hardware problem.

Any other ideas, folks?

Matthieu

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Matthieu Amiguet wrote:
[snip]
>
>>Third idea: the modem itself. Firmly seated in its slot?
>
>
> Well... internal modem in a laptop. Not so easy to check...
>
>
>>Fourth idea: power. Got enough?
>
>
> I guess it has... again, it's the built-in internal modem in an IBM laptop.
>
> Thank you for your ideas... I've got another similar laptop round here. I'll try that one to see if it can be a hardware problem.
>
> Any other ideas, folks?
>
My idea is, that your phone line is too noisy for those cheap modems built
into laptops. If your other computer is a desktop with an external modem, it
is likely that the external modem has a better noise reduction and therefore
can handle the bad line better. Another experiment worth trying would be to
use the modem of the other box (if that isn't also a laptop with a built-in).

If you have the possibility you should cross check at a friend's telephone
line. Maybe it is younger and not as noisy as your one is.

But this is an assumption based on experience with another laptop and
requires your other box to use an external modem or at least one that's not
as cheap as the one in your laptop ;-).

Greetings,
Felix

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> My idea is, that your phone line is too noisy for those cheap modems built
> into laptops. If your other computer is a desktop with an external modem, it
> is likely that the external modem has a better noise reduction and therefore
> can handle the bad line better.

Is there anything to do, then?

> Another experiment worth trying would be to
> use the modem of the other box (if that isn't also a laptop with a built-in).

It's a desktop, but the modem is built-in (it's an iMac, running Linux)

> But this is an assumption based on experience with another laptop and
> requires your other box to use an external modem or at least one that's not
> as cheap as the one in your laptop ;-).

Do you think a pcmcia modem would yield better results?

Matthieu

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On Fri, 08 Oct 2004 10:30:27 +0200
Felix Tiede <lists@pc-tiede.de> wrote:

> My idea is, that your phone line is too noisy for those cheap modems built
> into laptops.

Wait a minute... I've got adsl at home and that's were I'm trying to connect. Could it be the source of the noise?

That would be great, because I'm planning to really use the modem at places with no adsl, of course.

Matthieu

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Matthieu Amiguet wrote:
>>My idea is, that your phone line is too noisy for those cheap modems built
>>into laptops. If your other computer is a desktop with an external modem, it
>>is likely that the external modem has a better noise reduction and therefore
>>can handle the bad line better.
>
>
> Is there anything to do, then?
You could beg your telephone company to build you a better wire, but they're
not likely to do so. Mainly, because this often involves digging for the old
wire in walls and streets...
>
>
>>Another experiment worth trying would be to
>>use the modem of the other box (if that isn't also a laptop with a built-in).
>
>
> It's a desktop, but the modem is built-in (it's an iMac, running Linux)
I don't know about Apple's hardware, but I'm assuming, it's not as cheap as
it is when built for use with intel's x86.
>
>
>>But this is an assumption based on experience with another laptop and
>>requires your other box to use an external modem or at least one that's not
>>as cheap as the one in your laptop ;-).
>
>
> Do you think a pcmcia modem would yield better results?
It could be, but I don't know about the noise reduction chips in pcmcia
modems. Regrettably the hardware cost is the only indicator, but it could
mean nothing. Try with your shop. Tell them, you're going to return it, if
it doesn't yield better results. If they agree you can loose nothing.
I'd say: Try it out. It can only get better ;-).

Greetings,
Felix

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>
> > My idea is, that your phone line is too noisy for those cheap modems built
> > into laptops.
>
> Wait a minute... I've got adsl at home and that's were I'm trying to connect. Could it be the source of the noise?
>
> That would be great, because I'm planning to really use the modem at places with no adsl, of course.

if you have adsl enabled... you need to use a MicroFilter to conect
your modem to the line... if not the noise will be too much...

David GP


>
> Matthieu
>
>
>
> --
> gentoo-user@gentoo.org mailing list
>
>

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Matthieu Amiguet wrote:
> On Fri, 08 Oct 2004 10:30:27 +0200
> Felix Tiede <lists@pc-tiede.de> wrote:
>
>
>>My idea is, that your phone line is too noisy for those cheap modems built
>>into laptops.
>
>
> Wait a minute... I've got adsl at home and that's were I'm trying to connect. Could it be the source of the noise?
Only if you're trying to connect between your telephone connector and the
adsl-splitter. But that would cause an immediate disconnect to your
adsl-modem since the adsl signal is very fragile and breaks the instant
there's another active device on the line between your splitter and the
telephone company.
OTOH the splitter is a simple frequency splitter, dividing the high
frequency of dsl and the lower one of the normal telephone from one wire
into two and vice versa. It's very unlikely that it's causing noise on your
line.

[snip]

Greetings,
Felix


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