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Re: modem RX rate is considerable slower than RX rate



aphro [nate@firetrail.com] wrote:
> the subject is a little misleading :)

	sorry...

> 
> is the server you are testing from a local server? within your ISP's
> network? 

	Neither. 

> what speed do you connect at(see /var/log/messages) and what kind
> of file are you trying to transfer?(text? compressed? highly
> compressed?) and what mode?(ascii/binary) 

	It connects at 33600. It is a binary file. 

> and what client are you
> using?(ftp/ncftp/lftp/wxftp..etc) have you tried other sites? which ones?

	lftp. I have also tried to use ftp, the same resutls.

> 
> lots of questions to ask before i can help more.  give more information!

	I think it is the modem's problem. I have a US Robotics V90
	modem, which I think the remote isp does not support it.

	In the chat script, if I use the initialise command ATZ, I am
	able to connect, but only at 33600.

	If I use the US Robotics V90's initialise command AT&F, I am
	able to get the line speed 46600, but then failed to
	authentificate with the remote end.

	What does not make sense is that, the TX rate is so much slower
	than RX rate.

	Thanks.

Shao.

> On Wed, 5 Jan 2000, Shao Zhang wrote:
> 
> shao >Hi,
> shao >	when I ftp to a server, if I use the get command, I can get
> shao >	around about 4K/s. But with the same server, if I use the put
> shao >	command, I only get about 600bytes/s.
> shao >
> shao >	I have checked /etc/ppp/options, and tried to set both mtu and mru
> shao >	to 1500, but did not solve the problem.
> shao >
> shao >	Thanks for the help.
> shao >
> shao >Shao.
> shao >

-- 
____________________________________________________________________________
Shao Zhang - Running Debian 2.1  ___ _               _____
Department of Communications    / __| |_  __ _ ___  |_  / |_  __ _ _ _  __ _ 
University of New South Wales   \__ \ ' \/ _` / _ \  / /| ' \/ _` | ' \/ _` |
Sydney, Australia               |___/_||_\__,_\___/ /___|_||_\__,_|_||_\__, |
Email: shao@cia.com.au                                                  |___/ 
_____________________________________________________________________________


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