Quectel UMTS Module Series User Manual page 38

4 RXD_3.0V
5 TXD_1.8V_UART
6 TXD_3.0
7 DTR_1.8V
8 DTR_3.0V
9 RI_1.8V
10 GND
UMTS&LTE_EVB_User_Guide
Connected directly to voltage translator
Connected directly to voltage translator
Connected directly to voltage translator
Connected directly to DTR of UMTS&LTE modules
Connected directly to voltage translator
Connected directly to RI of UMTS&LTE modules
Ground
UMTS/HSPA/LTE Module Series
UMTS&LTE EVB User Guide
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