Archived from groups: microsoft.public.win98.gen_discussion (
More info?)
On Thu, 01 Sep 2005 10:00:25 +1000, Franc Zabkar
<fzabkar@optussnet.com.au> wrote:
>On Wed, 31 Aug 2005 10:20:11 -0500, Greg Ro <webworm12@yes.lycs.com>
>put finger to keyboard and composed:
>
>>On Wed, 31 Aug 2005 18:14:19 +1000, Franc Zabkar
>><fzabkar@optussnet.com.au> wrote:
>>
>>>On Sun, 28 Aug 2005 00:22:23 -0500, Greg Ro <webworm12@yes.lycs.com>
>>>put finger to keyboard and composed:
>>>
>>>>Another site said you could do that with two modems into one modem and
>>>>use only one phone line and your isp does not have to support it. I
>>>>think linux could only do this.
>>>
>>>That's not possible and even if it were you would not be able to
>>>exceed a combined downstream throughput of 56Kbps, FCC regulations
>>>notwithstanding.
>>>
>>>
>>>- Franc Zabkar
>>That beside the point. For your information. One time I download a
>>file that normally takes 10 minutes ...
>
>How big was the file? What was the file type? What kind of connection
>did/do you have? Were you using an external or internal modem? If
>internal modem, was it "hard" or "soft" or controllerless?
>
>> ... and it downloaded it in 2 minutes
>>Nothing was wrong with that file. I have no download managers and
>>the ie and firefox cache are always clean
>
>Dial-up modems perform V.44 or V.42bis or MNP5 data compression. You
>must have been downloading a highly compressible file. Typical
>compression ratios for text files are 2:1 for V.42bis and 3:1 (?) for
>V.44.
>
>Here are the results of a series of controlled tests:
>http://groups.google.com/group/comp.dcom.modems/msg/977f0be0d12ba0b7?dmode=source&hl=en
>
>Here's another one for V.44:
>http://groups.google.com/group/comp.dcom.modems/msg/527f06d21d0073d1?dmode=source&hl=en
>
>External serial (non-USB) modems will have a throughput which is
>limited by the port rate, eg 11.5 kBytes/sec for a 115200bps port, or
>23 KB/s for a 230400bps port. That's about 2 or 4 times the typical
>modem-to-modem speed.
>
>To see the maximum throughput that your system is capable of, create
>an "infinitely" compressible file consisting of 1 million repetitions
>of the letter "A". Then ftp it to and from your own web space.
>Alternatively, email it to yourself, but be aware that email uses MIME
>which adds some overhead.
>
>This post shows what is possible with a "synthetic" file using an
>internal controllerless modem, ie one that is not throttled by a real
>COM port:
>http://groups.google.com/group/comp.dcom.modems/msg/50bdb262d218cf2b?dmode=source&hl=en
>
>You may be able to achieve even better compression, for compressible
>files, if you enable software compression in the Server Types box in
>your DUN connectoid. Be aware that not all ISPs support it.
>
>
>- Franc Zabkar
I bet my isp was doing a test to support the compression of .exe or
..zip file in the near future. To shrink the download times. I happen
to download it at the time they were testing out the new type of
compression. Yes I know .exe and .zip can only be compressed so
much. There is always newer technology to even compress them more.
Maybe one day you could download a live cd with-in 1 hour on dial-up.
This may be far fetched. I could of got crosswired with a dsl line
using dial-up. My phone company has dsl. I don't know if that
possible. I don't use my phone company isp either.
Greg Ro