Thanks for the info. I wish to point out I am not trying to use the phone a
sa modem. Simply to sens and recieve SMS messages. Thats it. No data....

Regards, Peter.

-----Original Message-----
From: dr. Imre Bartfai [mailto:root@PROF.PMMF.HU]
Sent: Wednesday, October 31, 2001 20:34
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: A cable for SMS phones etc


I changed the subject tag. As your question, I have bad news for
you. AFAIK Nokie does it the dirtiest way: they hide the communication on
the physical layer completely so there is no chance to tell with the phone
using the PIC. U will recognize it so as Nokia s/w install a fake serial
port on the Windoze PC which virtually does not exist (COM3 or so). I
heard there is a Linux project willing to do the same emulation, but I
have no further information at this time.

I had the same problem and ceased Nokia. I will try Siemens as they
promise they provide a true Hayes modem in their phones for the
user. Maybe I will get a cable on the weekend and I will report of it.

Regards,
Imre

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On Tue, 30 Oct 2001, Peter May wrote:

> I have been reading this list and surfing the web for some info on
> controlling a GSM phone from a pic. So far I have managed to find various
> links etc on various cables. I have even went and bought a commersial
cable
> that seems to work with my phone with various bits of software but I am
> unable to get it to work with a terminal package. the reason for the
> terminal package is if I can do this with AT commands I should be able to
> get it to do it using a serial port on a PIC with basically the same
> commands. I realise there is another format of talking to the phone but my
> research (and I would love to be corrected on this) has shown that you can
> apparently use simple AT commands.
>
> For the record I am using a Nokia 5110 as my test phone
>
> Hence:
>
> I have found a couple of sites with home made data cables etc and have
> intentions of building one using a MAx3232 chip. I was wondering if some
of
> you would like to provide a link with a build it yourself data-cable type
> web page that you have used to build a succesful design....
>
> And I am confused as to the format of communications to the phone. Is it 7
> or 8 bit at 9600 or what?
>
> I would love to hear from anyone (on or off the list) about any of the
above
> of if you can offer any further links or info.
>
> Warmest regards, Peter
>
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>
>
>

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