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| | |-+  SCA in PDU. How to set string of chars?
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Author Topic: SCA in PDU. How to set string of chars?  (Read 769 times)
rickert
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« on: August 10, 2006, 06:28:52 UTC »

I'm use GSM modem that support AT commands. I'm need to send sms on some phone. And when phone of DA receive my sms he must see string of characters, that I'm typed, in the filed of OA.
Example:
AT+CMGS=28
>07D19720150110F011000B919720655701F10018AA0E00500 07200650076006500640021<CTRL+Z >
I'm telling to modem:
07 - count of next octets.
D1 - type of number: 11010001 - Alphanumeric, ISDN/telephone numbering plan.
9720150110F0 - phone number.
And so on default PDU packet formation.
Why modem return to me "+CMS ERROR: 111"?
What isn't correct in all this?
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rickert
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« Reply #1 on: August 10, 2006, 06:53:33 UTC »

How to hide sender number?
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SMS Forum Support
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« Reply #2 on: August 10, 2006, 08:29:10 UTC »

How to hide sender number?

can't be done from a phone. ESMEs can do it, albeit use alphanumeric numbers which are not replyable but most providers do not allow it.
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   Cormac Long
   Webmaster & Technical Enquiry Moderator,
   SMS Forum

rickert
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« Reply #3 on: August 14, 2006, 07:22:25 UTC »

I'm doing it not from phone. From modem. I saw example of php site page, where people can send sms and there addressee is hided.
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« Reply #4 on: August 14, 2006, 21:07:47 UTC »

I'm doing it not from phone. From modem. I saw example of php site page, where people can send sms and there addressee is hided.

modem and phone are both wireless devices.. SIM-based.. your calling address is fixed and cannot be modified.
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Regards,
   Cormac Long
   Webmaster & Technical Enquiry Moderator,
   SMS Forum

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