GSM MODEM SMS SENDING

[ABHAYM]

hi,i m interfacing gsm modem to my microcontroller.i need to send sms
through it.i am using AT commands for that.the command to send sms (AT+ CMGS)terminates withctrl-Z.now in my program i hav tried all ways to send ctrl-Z at end ofmy sms.
but it takes this as a character or string only.also i tried with ascii value of ctrl-Z but of no use.

i am able to see the transmitted commands on hyper-terminal through
serial interface & also on serail window while debugging.
the commands are as follows with 2ms delay between each of them.

AT , AT+CMGF = 1, AT+CMGS = mobile no. , "message to be sent " ctrl-Z /
26 / ^Z

plz suggest some way.suggestions are also invited if you suspect some
other problem .

[dappulaprashanth]

Hello,
Try to send "\r" character which is carriage return. This may solve ur problem. I have done a similar kind of application for sending sms using GSM phone as a modem by sending AT Commands.

//First Send
outputStream.write("AT+CMGS=29");//PDU MODE MSG
outputStream.write('\r');
outputStream.flush();

//Second Send
outputStream.write("0001000C91199994904427000012C8329BFD06D1CB783AC82C7FB741D021")//PDU MODE MSG
outputStream.write('\r');
outputStream.flush();