[wellylug] DSE Serial Modem Flow Control

Jethro Carr dodocaptain at paradise.net.nz
Wed Feb 9 07:28:32 NZDT 2005


woops, typo:

Must of missed that one. :-)

On Wed, 2005-02-09 at 20:24, Jethro Carr wrote:
> On Wed, 2005-02-09 at 09:05, Jamie Dobbs wrote:
> > That looks like a 'soft' modem (ie. WinModem) style of modem to me.
> > Best to get rid of it and see if you can find anyone that has a "real"
> > modem.
> 
> 
> I've never known a external winmodem before... And it can connect to the
> web - any winmodem I've ever tried can't even be talked to.
> 
> I thought that all external modems were full hardware modems. The box
> for the modem does claim to be a hardware modem too.
> 
> 
> > 
> > Jethro Carr wrote: 
> > > On Tue, 2005-02-08 at 22:06, Jamie Dobbs wrote:
> > >   
> > > > Make sure you have a fully compliant modem cable and use hardware flow
> > > > control - soft flow-control is generally crap.
> > > >     
> > > I know I have a decent modem cable. I use the one from the box & I also
> > > tried the one from my other modem.
> > > 
> > > 
> > > I've sent an email to DSE support. Maybe they can give me some info. 
> > > 
> > > Also, here's what I've found from playing around:
> > > 
> > > I can download anything okay, & upload very small amounts of data (such
> > > as a request to view a webpage),but when I want to upload something of
> > > common size - such as sending an email, the program will timeout.
> > > 
> > > I've looked this up in google & the Linux Modem & Serial Port HOWTOs,
> > > and they say this sort of program can be caused by flow control not
> > > working.
> > > 
> > > I looked up the AT command set for this modem in the PDF manual, and it
> > > says that the K3 & K4 commands should enable flow control. I tried these
> > > AT commands, but they appear to make no effect on the problem. I also
> > > tried to change the serial port settings with the stty program, but this
> > > didn't work either.
> > > 
> > > The modem lights are like:
> > > 
> > > DISCONNECTED FROM THE WEB:
> > > MR = on
> > > CTS = on
> > > 
> > > CONNECTED TO THE WEB:
> > > MR = on
> > > TR = on
> > > CD = on
> > > SD & RD = on when data transfer is occuring.
> > > RTS = on
> > > CTS = on
> > > OH = off
> > > 
> > > 
> > > 
> > > if anyone can help me, it would be great.
> > > 
> > > Does anyone else here have this particular modem? If so, I wouldn't mind
> > > seeing what AT commands you use with it.
> > > 
> > > 
> > > thanks,
> > > 
> > > 
> > > 
> > >   
> > > > > hi all,
> > > > > 
> > > > > I just got a DSE Electronics Serial 56k Modem
> > > > > (http://www.dse.co.nz/cgi-bin/dse.storefront/4207ba1c0067f898273fc0a87f9906e9/Product/View/XH1142)
> > > > > 
> > > > > 
> > > > > It works, except I can't seem to enable flow control. This is a problem,
> > > > > because when I try to upload anything, the modem gets the data sent to
> > > > > it too fast, and drops the packets. This makes it impossible to even
> > > > > send email.
> > > > > 
> > > > > 
> > > > > Can anyone give me some help here?
> > > > > 
> > > > > I've tried using the &K4 command (to enable xon/xoff), but it doesn't
> > > > > appear to do work. :-(
> > > > > 
> > > > > 
> > > > > 
> > > > > thanks,
> > > > > 
> > > > > --
> > > > > -- Jethro
> > > > > 
> > > > > dodocaptain at paradise.net.nz
> > > > > jethro.carr at jedolinux.com
> > > > > 
> > > > > http://www.jedolinux.com
> > > > > http://homepages.paradise.net.nz/jethroc
> > > > > http://homepages.paradise.net.nz/jethroc/cv.html
> > > > > 
> > > > > http://www.wellylug.org.nz
> > > > > 
> > > > > 
> > > > > --
> > > > > Wellington Linux Users Group Mailing List: wellylug at lists.wellylug.org.nz
> > > > > To Leave:  http://lists.wellylug.org.nz/mailman/listinfo/wellylug
> > > > > 
> > > > > 
> > > > > 
> > > > >       
> > 
> > 
> > 
> > ______________________________________________________________________
> > No virus found in this outgoing message.
> > Checked by AVG Anti-Virus.
> > Version: 7.0.300 / Virus Database: 265.8.5 - Release Date: 3/02/2005
> -- 
> -- Jethro
> 
> dodocaptain at paradise.net.nz
> jethro.carr at jedolinux.com
> 
> http://www.jedolinux.com
> http://homepages.paradise.net.nz/jethroc
> http://homepages.paradise.net.nz/jethroc/cv.html
> 
> http://www.wellylug.org.nz
-- 
-- Jethro

dodocaptain at paradise.net.nz
jethro.carr at jedolinux.com

http://www.jedolinux.com
http://homepages.paradise.net.nz/jethroc
http://homepages.paradise.net.nz/jethroc/cv.html

http://www.wellylug.org.nz




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