Dialing using ATD command, Why I can't make a call using ATD for my SIM card?

Hi all,

When I use ATD98765432 to make a call with my SIM card, I receive NO CARRIER. However, when I use my friend's SIM card, it works! Can anyone tell me why? Would it be the difference in versions of the SIM card? What kind of SIM card should I use in order to make a call for data?

Thanks and regards,
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The SIM card shouldn't make a difference.  Looks like the way you are issuing the ATD command is wrong. Try


I don't see a semi-colon at the end of your ATD.

Also, not sure where you are calling from, but your number is 8 digits long (unless this is just a sample number).

Finally, not sure about your test environment, but the phone/modem may be locked to a particular carrier.

You can use any SIM card to make a data call - just would be better if the phone supported data call mode and appropriate error corrections (see wavecom, ericsson)


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Hi All,
   I use Siemens TC35 GSM Module. I have to use this as an modem to dial up an ISP, then connect to an Internet connection & then transmit data to an particular website. These datas are then manipulated using the IIS server.
   Now tell me, How to I dialup an ISP & provide the Username & password & rest other acknowledgements.
   Also is that possible of sending the direct data calls to an other GSM Module & read the datas from them, If so How to do the data calls & how to recive them.
   If using the GPRS can we directly connect to the website(IP address), as soon as the GPRS mopdule is switched ON. If so what are the steps to do so??
   Pls help me with the source code available or with the Hints or steps to be done.
   Its very urgent so pls help me out.
Thanks in advance.
You can contact me at my mail ID somu@softcrylic.com
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