John Gunn wrote:
--- Ralph Shumaker <[EMAIL PROTECTED]> wrote:
James G. Sack (jim) wrote:
MacNean Tyrrell wrote:
.. they forgot to mention that
i'm too far from the switch to get 3mb, i'm only
get 1.5mb, which is great,
but i pay the same amout as people getting 3mb,
sux.
Unfortunately, I don't know of any way to test a
line beforehand to see
how it will work. Well, actually I do but the
phone company wouldn't let
me do it :) I guess a primitive test would be
to see if a 56k dial-up
modem will give you full speed. If it can't,
then I doubt DSL will
either.
Hey Gus, maybe your idea of measuring 56K dial-up
throughput could be
developed into a simple test to see if there
really is a correlation?
Regards,
..jim
I'm currently connected at 45333, and frequently get
46666.
Occasionally I get better, but these two seem to be
the norm for me.
The max allowed by the FCC (or somesuch) is 53K,
IIRC.
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I'd like to follow up on Jim's suggestion by
contributing the speeds I have been getting lately
using my Best Data V.92 external serial modem (Smart
One, Model: 56SX-2), the fastest serial modem I have
ever found in many years of searching, and asking Gus,
since he has a solid connection which delivers DSL at
full speed, what speeds he was able to obtain over
those lines using a serial modem.
Unfortunately, I don't remember what my connection speeds were. For most
of my time on dial-up I used a Hayes 28.8 modem because it gave me the
most reliably connection and was good enough for e-mail. The last months
before I switched to DSL I actually would take my laptop to either the
Installfests or the library, get my updates with their high speed
connection, then when I got home would synchronize the yum cache to my
home system and then do the updates on my home system.
Here are the connect speeds I found in my currently
available syslogs.
Jun 15 22:34:03 m700 chat[21160]: +MRR: 26400,49333^M
Jun 16 19:44:19 m700 chat[6982]: +MRR: 26400,48000^M
Jun 17 10:14:34 m700 chat[5317]: +MRR: 26400,49333^M
Jun 17 23:05:01 m700 chat[5625]: +MRR: 26400,49333^M
Jun 18 13:55:09 m700 chat[5688]: +MRR: 26400,49333^M
Jun 18 13:59:27 m700 chat[5859]: +MRR: 26400,49333^M
Jun 18 15:52:58 m700 chat[8661]: +MRR: 26400,49333^M
Jun 18 22:36:45 m700 chat[18758]: +MRR: 26400,49333^M
Jun 19 10:00:59 m700 chat[5309]: +MRR: 24000,49333^M
Jun 20 15:46:25 m700 chat[5353]: +MRR: 26400,48000^M
Anyone else able to correlate their 56K modem speeds
with speeds obtained using DSL?
If I had someplace to call I'd give it a try. I have to check my DSL
Extreme account, because I thought it came with a dial-up account.
Does the fact that these two modes of transmission
utilize different bandwidths invalidate this effort?
In other words, should a line capable of clean voice
frequency transmission also be capable of clean DSL
frequency transmission?
The DSL connection uses a higher frequency, which attenuates more
quickly on the phone lines. The dial-up modem pushes the upper frequency
limit for voice (~3000 Hz), so if that works OK it's probably a good
indicator the DSL should be OK also. Of course, this is just conjecture
without doing actual testing.
Or, put a slightly different way, would a line
incapable of providing clean voice frequency
transmission, necessarily be incapable of clean DSL
transmission?
If you can't get good voice transmission I think there is no way you
will get good DSL transmission, given that the demands of DSL are more
stringent than those of voice.
Gus
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