I’m using EG-25G modem. I’m trying to send SMS with PDU mode. But i always got “CMS ERROR: 304” after entering
+CMS ERROR: 304
I can send the SMS with text mode successfully. Could you please advise ?
Problem solved after using a Linux-based terminal. It seems Putty added another character before the ‘ctrl-z’ character when I press Ctrl-Z, causing the modem to return error.
Ok, got it. Thanks for your updating. Thanks!
hello dear, I have the same problem may I know which terminal did you use ?
I’m using ‘minicom’ in Linux to get this working.
Your Ctrl-Z character needs to be on the same line as the PDU. There must be no new-line character between them.
Alternately, you can use ‘TeraTerm’