[wellylug] DSE Serial Modem Flow Control

[Jamie Dobbs]

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.

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
>>>
>>>
>>>
>>>      
>>>

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