gsmcomm

I have searched a lot but still couldn't find exactly what am looking for. Actually i'm working on a winforms app that will allow user to send bulk sms using GSMCOMM library with the help of a GSM Modem. What i have achieved so far is that i can send text messages that are <= 160 characters but problem begins when a message gets longer that 160 characters. I don't get any error and sms seemed to have been sent but its not actually. I'm sharing my code snippet that is used to send sms. Please have a look at it and let me know where the problem is. Thanks. SmsSubmitPdu[] pdus; comm.Open(); pdus

I am trying to make a program to send a sms. I wrote the program but doesn't successfully send the message. My program send an At command to the Port COM in my computer but I do not get a response from my gsm modem. I am using COM terminal (Temp pro...) to send sms with the at command and I am able to send sms. Therefore I don't know why the program can't send a sms. import java.io.*; import java.util.*; import gnu.io.*; public class prawiefinal { static Enumeration portList; static CommPortIdentifier portId; static String messageString = "AT+CMGF=1 \r"; static String messageString2 = "AT+CMGS