Peter May wrote: >However if I use a terminal package (tried Hyperterminal,CRT, etc etc >etc plus a few more) I don't seem to get a response as in an error or >anything I would call usuable info. You need to use "AT" commands (like with a PSTN modem) to talk to the mobile. Any other lines of input text that don't start with an AT will probably be ignored. Try typing AT and pressing (or ) - you should see an OK response. If you don't get this response then one possibility is that your serial port parameters are not set up correctly. Try setting Hyperterminal up for 8 data bits, no parity bits and 1 stop bit. Sometimes, the mobile detects the baud rate automatically (try sending a couple of characters at the start). If this doesn't work, then start by setting Hyperterminal for 9600 bps and work up through the speeds (19200 bps, 28800 bps, 38400 bps, 57600 bps etc.) until you find the correct one. It is also possible but unlikely that a lower baud rate or a different format has been set - check the menus on your mobile to see if there is a configuration option for these. >I have found info around the net that suggest that you can talk to a mobile >phone using PDU or TEXT. There is a way of telling the phone which is being >used. The relevant command is AT+CMGF=0 for PDU mode or AT+CMGF=1 for text mode. You can check the current setting using an AT+CMGF? command. A complete list of SMS commands can be found in the standards document GSM 07.05 which is available from the ETSI Web site at http://www.etsi.org >In the PDU format info someone provided it said it was a 7 bit format. Does >that mean I should set the port to 7 bit and one stop bit or that is no >where near the ball park. You will probably find text mode simpler to use to start with. In this mode, you can send an SMS by entering AT+CMGS="" and pressing , which should respond with a '>' prompt. At this point, you can type your text message. To send the message, type a character (or if you have made a mistake, send an character to abort). The mobile should respond with an OK message. Note that the destination number does need to be enclosed in double quote marks as shown above, and can be in "world" format (e.g. "+44" prefix for the UK). I hope this gets you started! -- Ian Chapman Chapmip Technology, UK -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body