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SIM800H Datasheet(PDF) 34 Page - SIMCom |
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SIM800H Datasheet(HTML) 34 Page - SIMCom |
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34 / 73 page  Smart Machine Smart Decision 4.6. RI Behaviors Table 12: RI behaviors State RI response Standby High Voice call The pin is changed to low. When any of the following events occur, the pin will be changed to high: （ 1）Establish the call （ 2）Hang up the call Data call The pin is changed to low. When any of the following events occur, the pin will be changed to high: （ 1）Establish the call （ 2）Hang up the call SMS The pin is changed to low, and kept low for 120ms when a SMS is received. Then it is changed to high. URC The pin is changed to low, and kept low for 120ms when some URCs are reported. Then it is changed to high. For more details, please refer to document [10]. The behavior of the RI pin is shown in the following figure when the module is used as a receiver. Figure 27: RI behaviour of voice calling as a receiver Figure 28: RI behaviour of data calling as a receiver SIM800H&SIM800L_Hardware Design_V2.02 34 2015-07-27 |
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