SMS-PDU with 8 Bits

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  1. Q:

    In my application I need to send ‘8bits’ SMS (UCS2). How can we do it?

     

    A:

    You can send PDU at 8 bits or ucs2 when you use SMS in PDU mode.
    The IRA set (and so the limitation to 7 bit) is only for SMS in text mode.

    In order to send SMS in PDU you don’t have to set the +CSMP because all data is included in the PDU.
    Just set the PDU mode AT+CMGF=0 and send directly the PDU with the AT+CMGS=

    >…….PDU..here…….. CTRL-Z (CTRL-Z is hex char 0x1A or 1AH )