Re: Connection stable at only one speed (dial up)
- From: "Pop`" <nodoby@xxxxxxxxxxxxxxxxxxx>
- Date: Sat, 2 Dec 2006 21:06:30 -0500
All good points and suggestions, Jack. I've tried it a few times and never
had a separately run line to any good though; if there's an interference of
some sort in the current lines, whatever is added to the system will have
that same situation present on it. But, like I said, I did try it, "just in
case" <g> and lost.
As for connecting a modem directly to the Network Interface Device (NID),
then that connection should be the ONLY one; the others should be removed
for the duration of the test. Otherwise the results won't be very
meaningful and not likely to be any different either since it'll be no
differnt than plugging into any of the jacks. Whatever is on the wires at a
jack will still be there at the NID, so you have to disconnect all the other
wires for such a test to be meaningful.
IFF it fixed things though, then it'd be almost certain the house wiring
is a problem.
I've found it's best when talking about things like NID, etc. to explain
what they are; most people don't know the jargon. Nor do most even know
what that inferface is, in fact, or even where it is.
I really suspect his modem, after a little more thought. He's indicated
"other" modems work OK, but didn't actually say they were attached to or in
his own machine, though I think it's still indicative.
If I remember correctly, BCM is a Broadcom modem and uses a Rockwell
chipset. Back in the days when I did compliance testing, analog modems from
them weren't all that great reliability wise. But we didn't care whether
they worked or not, only that no harm was done to the telco wires <g>.
******* Hmmm, TO THE OP: *********
If you're feeling ambitious & know what your'e doing, try reversing the
red and green wires either right at the jack where they come into the house,
or at the box your modem connects into. If you know how to use a meter, the
Red lead should be negative with respect to the Green lead, right at the
jack your modem connects to!
I -think- they were one of the brands where carrier detection (and
ringing detection) became a problem if the polarity was reversed; a leakage
from their ring detector was putting a DC bias on the carrier detector
lines, causing it to be intermittant. That was a long time ago though;
surely they've fixed that by now!
As for the option 2, it doesn't sound like the OP has ADSL; Not too sure how
that would help unless I missed something there. Looks a little newbie-user
unfriendly to me, though it is sort of a neat setup.
HTH
Pop`
Jack (MVP-Networking). wrote:
Hi
User can make sure that he uses a good reputable Dialup Modem.
Some users lay a special telephone line from the NID (the Telco box
that brings the Tel. line to the house).
If you sharing Internet connection with Dialup you might, get a more
stable connection using a setting like option 2 on this page.
http://www.ezlan.net/DialUp.html
Optimizing here, http://www.ezlan.net/Internet_Speed.html
You can try to set the computer directly on the NID, if you get better
Bandwidth than lay a special line from the NID to where the computer
usually sits.
Otherwise, there is nothing else that you can do. The analog Tel.
signal that is used by Dialup is very susceptible to noise, and
quirky line connection, the miles of lines between your NID and the
ISP Modem array is beyond your control.
Many ISP provide few connection numbers in each area, try all the
numbers that are within your dialing area, might be that one would
fair better then the other.
Jack (MVP-Networking).
<boongles@xxxxxxxxx> wrote in message
news:1164997183.081252.255980@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I am unfortunate enough to live in an area that dial up is the only
sort of internet connection available (aside from satalite, which I
am not interested in). This has worked fine for me for the previous
7 years except for lately.
My connections have always been between 40.0kbps and 48.8kbps.
Obviously, I preferred the faster connections, but even if I dialed
up a slower one my connection would still be stable - just a bit
slower. Lately, I've found that the only time my connection is
stable, that is my connection is not dropping out or giving me lag
spikes, is when my connection is exactly 45.2kbps. Anything lower
or higher causes problems. This wouldn't be so bad except that it
sometimes takes me 20 to 30 minutes to get this connection after
repeated attempts. I've tried checking for line noise, plugging in to
different jacks
while having the others disabled, changing isps (twice), checking
IRQs and modem settings, and updating modem drivers. Also, I have
dialed up from 3 other computers on the same phone line (as well as
a different phone line connected to my house) and, while my
connection speeds vary in the same way, stability is fine. Through
these such tests, I think I am correct in assuming the problem lies
somewhere in my computer. The only thing I can think of relates to some
settings I had changed
in the past. For a brief period of time I tried using a wireless
broadband internet service available in my area. Supposedly due to
interference, my connection to their access point dropped out very
often, so after 2 months of service I dropped that isp and went back
to dial up. During the time I used the wireless service I attempted
gearing my internet connection towards broadband by using
TCPoptimizer. This program was supposed to improve internet
connection by tweaking such things as my MTU and receive window. Shortly
after going back to dial up, I noticed the problem I am
complaining of, and quickly assumed it was due to the settings I
changed in TCPoptimizer so I used it again to revert back to windows
defaults. Unfortunately, this did not help. So, I decided to use
the same program to gear my modem for optimal dial up speed. Strangely,
my modem is no longer available in the program's network
adapter selection so I cannot use the program to tweak it's settings.
I am only assuming this is the cause of the problem - it may have
nothing to do with it. If anyone could suggest something else to try
I'd greatly appreciate it.
Thanks
.
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