Sending sms with only predefined melody

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SMS & MMS Technical Forum » NowSMS Support - SMS Issues (Product Support Only) » Archive through March 09, 2004 » Sending sms with only predefined melody « Previous || Next »
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Anonymous
 
Posted on Thursday, February 12, 2004 - 12:54 pm:   

Hi
Had a problem regarding sending sms with predefined melody and no text with GSM7 bit encoding. I hv connected the fone via serial cable and it is unable to send the message but if i change the encoding to UCS2 it allows me to send the same message.
I checked the PDU -
00 55 0B 0C 91 19 89 09 03 45 54 00 00 FF 06 04 0B 02 00 05
Can anyone please tell me what might be wrong.
Bryce Norwood - NowSMS Support
Board Administrator
Username: Bryce

Post Number: 1868
Registered: 10-2002
Posted on Thursday, February 12, 2004 - 01:46 pm:   

The inbuilt GSM modems in some phones don't like to send a message with only UDH, but no text.

A trick that usually works is to set the DCS to 8 (Unicode/UCS2), and add 00 20 (a space character) on to the end.

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