Re: [Q] 56K US Robotics?
Vladislav Papayan x285 <vlpa@EXCHANGE1.Daleen.com> writes:
> Would anyone know how to verify that I am connecting to
> Internet at 56K. I run Debian hamm + 2.1.78 kernel.
> What else do I need to do to get it going at 56K. And may be I am
> connecting at 56K -- but how do I verify it for sure (my modem
> is US Robatics external).
Quick solution:
use ncftp to download a binary file from your ISP's ftp server. It will tell
you the transfer rate after finishing the download.
Some thoughts about connectspeed:
You can't relay on the speed negotiated during connect. Here in germany, a
stable connect is at most 46.000 Bytes/s. And some tests (www.cnet.com) say
the same for the US.
Most modems have some AT commands which tell them how risky(=fast) they
should connect. If the modem chooses a too high connectspeed, errors will
occur during transfer. This is no problem. The modem will decrease its
speed. But you won't notice this as you can't ask a modem about it's current
speed. The opposite case is possible as well. The modem will increase its
speed on good connects.
My guess about why you get "56k" on WinNT:
You use a USR modemdriver for NT. This driver sets the above mentioned
"risksetting" very high. So you get a "56k connect". But the modem will
decrease its speed very soon as errors during transfer will occur often.
On Linux you use AT&F to initialise your Modem. The &F settings have a
rather conservativ risksetting and you get a minor connectspeed.
You could do a test:
Download a somewhat big file form your ISP's FTP Server, one time using NT
and one time using Linux. Then you can see if I am right.
Ciao,
Martin
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