I have been reading this list and surfing the web for some info on controlling a GSM phone from a stamp. So far I have managed to find various links etc on various cables. I have even went and bought a commercial 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 out on a stamp 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. I am not however trying to use the phone as a modem. Simply send and recieve SMS messages 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 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.