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send sms with AT commands

807603Jan 5 2007 — edited Dec 7 2007

Hi to all,
I want to send concatenated sms in pdu mode ....
I have to use javax.comm and AT commands...
Using these I have tested the "AT \r\n" command and i get reply as OK
So i know this is working...now wen i try to send text sms .....

String line1="AT+CMGF=1\r\n";
    String line2="AT+CMGS=\""+ dest+"\"\r\n";
    String line3=messageString+"\r\n";
    String line4="\u001A";

but i dont get any output......

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Locked on Jan 4 2008

Added on Jan 5 2007

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