Figure 15: Connection Of Three Lines Uart Port - Quectel UC15 Hardware Design

UMTS/HSDPA Module Series
UC15 Hardware Design
Three lines connection is shown as below.

Figure 15: Connection of Three Lines UART Port

UART port with hardware flow control is shown as below. This connection will enhance the reliability of the
mass data communication.
Figure 16: Connection of UART Port with Hardware Flow Control
NOTE
The module disables the hardware flow control by default. AT command AT+IFC=2,2 is used to enable
hardware flow control. AT command AT+IFC=0,0 is used to disable the hardware flow control. For more
details, please refer to document [1].
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