GSM-modem

[RMy]

I want to communicate with a GSM-modem (want to send text strings / sms to a mobile phone) and wonder if anyone else have tried this - with success. Would appreciate any hints.

[Niko]

You only have to use the serial port communication and send the AT
commands to your GSM modem. The AT commands for sending sms you should
find in the manual of the GSM modem

Niko

[RMy]

But, if there were someone that has done this already, I would be happy to receive a VI. I have not bought the modem yet. It is just an idea I have.

[Rumcajs]

Here you are.
But be carefully. It's for Nokia mobile phones, and wait gaps between AT commands are very important.
Documentation to modem compatibility you can find on nokia web site.
Rumcajs.

[RMy]

Thanks! But, I already do have some Nokia example VI's.

The attached VI: Can this be used as a basis for communication between LV and any GSM modem or phone? Or, will the AT commands (and wait gaps?) vary among the brands?

[Roberto_N.]

Three points:
1) An Sms can be managed in "Text" mode or in "Pdu" mode (more difficult), previous Vi example sends messages in "Text" mode, try with "Google" for pdu data format for Sms;
2) Some Nokia phones (but I think all) support both formats, other phones support Pdu only, see the technical documentation of the Gsm modem;
3) If your Gsm has an internal modem inside, you can send AT commands to the serial port where it is connected, If not (as for Nokia 5110 and 6110) you have to install a driver (for Nokia 5110 and 6110 is "Nokia Data Suite"), this driver creates an additive virtual serial port, so you have to send AT data to it (not to the real serial port connected).
Good luck!

[Nishant]

Hii, Rumcajs

           Can you please explain me the data flow of the vi, because i want to send the message from the modem GM29 from Sony Ericsson, please help me and if you have AT Commands for Sony ericsson then please send it to me.

            Another question i want to ask is, is it require to give the command of Message setting number? i dont know that is it stored either in the sim or in the Mobile?

Thanks,

Nishant

Message Edited by Nishant on 04-27-2006 11:31 PM

[astucieux83]

Hi, may i know what's the model of the nokia phones? Can i connect the phones through USB instead of the serial port?

[nag123]

hi all , i  developed a application using modbus protocol data frame  in labview, this data having the 8 bytes in the frame formate of modbus rtu which is come out serial port of pc Rs 232. my question is can connect this data to the Gsm modem to convet the data formate of  gsm to connect the Gsm net work?

My application name is optioning of trip unit using Gsm . my trip unit is modbus Rtu frame formate device . i want to send the optioning data through gsm network.

 converstion of data

                                       Labview modbus frame to gsm frame (pc side)------------------>gsm frame to modbus frame (device side) .\

it is possiable or not??

[Pnt]

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Nishant wrote:

Hii, Rumcajs

            i want to send the message from the modem GM29 from Sony Ericsson, please help me and if you have AT Commands for Sony ericsson then please send it to me.

---

If you want to send an SMS with GM29:

AT+CMGF=1

OK

AT+CSDH=1

OK

AT+CSMP=17,167,0,0

OK

AT+CMGS=“+447747008670”

> Test SMS

􀀓

+CMGS: 15

OK

See manual for each command's details.

---

Nishant wrote:

            Another question i want to ask is, is it require to give the command of Message setting number?

---

I don't understand what you mean.

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Nishant wrote:

 i dont know that is it stored either in the sim or in the Mobile?

---

You can do both with command

AT+CPMS