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lagu2653 Posts: 8

I'm trying to send SMSes using AT commands to a K700i phone but I keep getting the same error mesage no matter what PDU I enter
Code:
at+cmgs=14
> 0001000a81708340918500000161
at+cmgs=14
> 0001000a81708340918500000161
+CMS ERROR: 304

304 is "Invalid PDU mode parameter" according to the AT command reference.

Thankful for any help, Lars
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Posted: 2004-11-08 12:35:30
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Krubach Posts: > 500

Don't know what's wrong but maybe the problem is that K700i doesn't suppport the command or needs different params.

Try it out with a different phone...
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Posted: 2004-11-08 12:41:24
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lagu2653 Posts: 8

It's strange because the application PDUSPY

PDUSPY.zip

PDUSPY site

manages to send SMSes using the K700i phone. The other phones, which I have are: Sony Ericsson P900 (this phone cannot send SMSes by throught AT commands), Sony Ericsson T310 and a Sony Ericsson T300. I had the company where I'm doing my master's thesis buy the K700i just to use as a GSM-modem, so I really need to make it send SMSes through AT commands.

Lars

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Posted: 2004-11-08 16:08:31
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Krubach Posts: > 500

Can't you get what that PDUSPY is using as pdu parameter?
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Posted: 2004-11-08 16:09:48
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lagu2653 Posts: 8

I don't know how to figure out what PDUSPY sends to the serial port it's just one .exe file with six tabs. I'll see if I can listen to what's written to the serial port. There are not much settings in PDUSPY. Just download it and double-click on the .exe file and you can see what it looks like.

Lars
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Posted: 2004-11-08 18:31:18
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Krubach Posts: > 500

You can try and use BusHound to spy on what's going on on the port.
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Posted: 2004-11-08 18:34:39
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lagu2653 Posts: 8

Thanks for the tip about Bus Hound! I finally figured out what was wrong. I didn't know you were supposed to exclude the SMSC bytes and the SMSC-length bytes when entering the length of the PDU.

Lars
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Posted: 2004-11-09 00:00:25
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Krubach Posts: > 500

Always glad to help out!

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Posted: 2004-11-09 01:06:28
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