reading and sending sms through p300u edge modem

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Hi all,
I am trying to send SMS through p300u edge modem but it is showing an error +CMS Error :518.
Here I am changing the message format into text mode by giving the command AT+CMGF=1, and it is giving OK response.
But while reading the SMS it is showing in number format and I am unable to read and send SMS by using this modem. please help me out, its my project work, urgent.

Posted 31-May-10 20:08pm

sinaku08

Updated 31-May-10 21:29pm

Ankur^\m/

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Ankur^\m/ · Answer 1 · 2010-05-31T20:44:00

sinaku08 wrote:
it is showing an error "+cms error :518".

Error code 518 means Invalid parameter. Check the command that you are using. You must have supplied some invalid parameters.

sinaku08 wrote:
here Iam changing the message format into text mode by giving the command AT+CMGF=1, It is giving OK response . but while reading the sms it is showing in number format.

You said you got an OK response. That should mean text mode is supported. Anyways I would suggest you to check which mode(s) are supported by your modem.
Check using this command: AT+CMGF=?
If a response, +CMGF: (0,1) is received, means both Text mode and PDU mode is supported. 0 - PDU mode, 1 - Text mode
If Text mode is also supported, you are doing something wrong.

sinaku08 wrote:
please help me out,its my project work

I am providing you with a couple of links on CP which would help a lot in developing this project. I would suggest you to read the full article before using the code.
Send and Read SMS through GSM Modem using AT Commands[^]
How To Send and Receive SMS using GSM Modem[^]

Hope this helps!
Let me know if you have any queries.