The short message distribution data application is very wide, and the recent project is to send a single tone ringtone, a picture, and WAP Push to the other party with GSM MODEM. The short message sends the data key at two: 1. TP fill the key in TP_FO, TP_MR, TP_PID, TP_DCS. These values affect whether the other party can identify this data message. Second, data fill single soundtables picture generally can provide encoding by special CPs, of course, you can also write with NOKIA's information, huh, just trouble. WAP Push's content as long as the URL and Title are available, followed by the WAP XML rule, and after a few days of fighting, it will finally send short messages through GSM MODEM, single tone ringtone, Monochrome pictures, WAP Push, etc.
