Article # 585, added by Geoworks, historical record
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SMSO_dataCodingScheme, SMSO_userDataLength, SMSO_userDataHeader
Q. What are these fields for? Is it really necessary to include them? A. These fields are for sending 8-bit SMS messages. If you want to send 8-bit data in your message you should set SMSO_dataCodingScheme to 0xF4. This tells the SMS system that the user data is 8-bit and that it can contain null bytes. Setting this field to any other value indicates that the message is 7-bit. If SMSO_dataCodingScheme is set to be 8-bit then you should set the size of the user data in SMSO_userDataLength. Setting this allows the data to contain null bytes. You should also set the SMSO_userDataHeader field to TRUE if there is a header at the beginning of the user data.