can't send SMS using GSM modem

[S.P.S]

hi,

I am using Fargo maestro 20 gsm/gprs modem with bands 900/1800.

When i communicated with it using hyper terminal i got responses for all the at commands normally.when a message is received new message indication is obtained and i could read the message from that location.i can also dial a number.

but my problem is when i try to send an sms, it always gives error. after i gave the command 0x1a the modem waits for some time and gives the error message. is it damaged?

i checked two of the same modem and got one working properly and other one got the same problem as in first.

What could be wrong?


thanks in advance..

 

[jayanth.devarayanadurga]

Post code.

 

[themask]

Post code.

He is just testing gsm modem using a terminal program. There is no source code yet.

@S.P.S.

If you are testing the AT+CMGS command to send a text message, you should input the CNTL+Z character after you type the text message and not the 0x1A character or the carriage return or the line feed character

- - - Updated - - -

ah my bad... 0x1A is the control+z character...

Ignore my previous post.

@SPS

Maybe you can post here the response of the GSM modem, the one showing in the terminal program