[oclug] [FWD: RE: null modem cable]

[Jean-Francois Messier]

Well, in order to see whether the problem is in configuring Linux for
the serial port, can you temporarily try to connect your modem to a
Windows PC, where you can perhaps have a better configuration of the
serial port ? Also, some devices will auto-configure to the actual speed
of the port. I know that a USRobotics 56K modem  was auto-configurnig
with connected to the serial port of the PC. 

Can you get the same router on a serial port working on another computer
? If so, this might be a port issue on your computer, or a software
config issue. 

Is your device's serial port working with some known commands and
expected replies ? is this a console port for a straight login ? 


Moi, je suis Linux,
Et Windows 7, c'était pas mon idée !.......
JF



-------- Original Message --------
Subject: Re: [oclug] [FWD: RE: null modem cable]
From: James <bjlockie at lockie.ca>
Date: Wed, October 20, 2010 9:54 pm
To: General Membership Discussion List <oclug at lists.oclug.on.ca>

On 10/20/10 21:38, Piotr R. Sidorowicz wrote:
> It appears that you need a straight male-to-female serial cable, and not 
> a null modem cable.
"Straight cable" refers to a normal serial cable, right?
I tried different baud rates (I assumed I'd at least get junk on on of
them :-() but nothing happened.
Is there a program that will try every combination of baud rate, start
and stop bits, parity?

> What is crucial though, is to verify the default 
> connection details for your router, i.e., baud rate, number of start 
> bits and of stop bits, parity, etc., and to match those parameters 
> exactly in your terminal emulator. Otherwise you are likely not to see 
> any interaction.
>
> Hth,
>
> Piotr
>
> On 10-10-20 08:34 PM, James wrote:
>> On 10/20/10 19:51, Jean-Francois Messier wrote:
>>> Usually, serial ports on computers have a male port on the back. If this
>>> is a female port, you would likely meed a simple male-to-female cable.
>> The computer is male and the router is female.
>> I tried a normal serial cable.
>> It is 'possible' that my serial port doesn't work (I upgraded the kernel
>> many times since I last used it).
>> The port on my computer should work. :-)
>>> Question is about the number of pins. On a PC, this is usually 9 pins.
>>> What is it on your Netgear router ? Do you have a PC with a serial port
>>> that you can actually operate and use under linux ?
>> It is labelled rs-232 on the router and it looks normal. :-)
>>>
>>> Moi, je suis Linux,
>>> Et Windows 7, c'était pas mon idée !.......
>>> JF
>>>
>>>
>>>
>>> -------- Original Message --------
>>> Subject: [oclug] null modem cable
>>> From: James<bjlockie at lockie.ca>
>>> Date: Wed, October 20, 2010 5:13 pm
>>> To: OCLUG Mailing List<oclug at lists.oclug.on.ca>
>>>
>>> I have a Netgear WGR615V router that has a female rs-232 (labelled)
>>> port.
>>> I want to connect to it but I have no idea what kind of cable I need.
>>> I'm looking for someone with a cable to try it for me.
>>> I don't want to buy a cable unless I know it will work.
>>> I think it's broadcom based.
>>> The eventual goal is to get it working with dd-wrt.
>>> I want to see what it shows. :-)
>

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