Hi,
We have just completed a pic to GSM phone using SMS (short message service)
to send and receive information. Forget about controlling a ericsson or
nokia or similar phone.
First of all they use an almost impossible type of 232 the nokia uses a
single wire for tx and rx and the protocol is a nightmare with checksums
checking the checksums checking the checksums and timing is extremely
critical.
Our Millennium Control uses a simple Falcom module http://www.falcom.com or
you could even use a Falcom Modem or a GCOM modem http://www.wasp.co.za
 There is a punt for tjaart ) all are controlled via RS232 with very simple
commands. BUT a few tricks are needed to stop them running away and sending
a few thousand messages over a weekend HA HA.
Go to the Falcom Webpage and if I remember correctly all the info is
downloadable. With all the AT commands you need and how to do them.
Just by the way our unit has 12 inputs that can send 24 signals (hi one low
one) and two relay outputs all the inputs are programmable via SMS at to
what signal is sent such as input 1 hi = Alarm on  input 1 low = Alarm off
and the signals can be sent to up to 4 cellphones within 10 seconds. The
relay outputs are set or cleared also by sending an SMS to the controller
from your cellphone. The unit also has a battery low detector just in case.

Just by the way certain countries do not have a good SMS service and only
the data service works well in this case ericsson have a super Data modem
for less then $200.00 that can be used.

Regards
************* Julian Fine ***********
********** julian@fine.co.za ********
******* http://www.fine.co.za *******
** http://www.eagle-wireless.co.za **


-----Original Message-----
From: Mik Kim <derive@JPS.NET>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: 13 May 1999 08:18
Subject: Re: PIC and GSM Movil Phone


Hi,

I have Ericsson CH388 (probably same as other D or G 3xx series). All I
want to do for now is to send/receive bits to the modem in my PC and
detect/simulate the keypad. In short, this would be EMMI and modem
functions access. I would like to know what's required to do that.

Here's a simple idea. I have various sensors and the PC monitors them.
Once the sensor is tripped, it lets me know which one was tripped to my
GSM mobile. It would be nice if I can press the keypad and have the
signal sent to the PC; that way, I can turn on the super-soakers (water
guns) near appropriate sensor.  :)

Data doesn't have to be more than 9600 bps, so I'm guessing the phase I
stuff is fine. But how???

Thanks for any help.

Sebastian Dols wrote:
>
> >Dear all :
>
> >I need interface a PIC with a GSM movil phone. Any help and information
are
> >welcome.
>
> >Sincerely yours
>
> >Eugenio Martin
> -----------
>
> Mmmm.. to do what? With what kind of gsm phone? Maybe if you are more
> explicit you will receive more info..