
RTD Embedded Technologies, Inc. | www.rtd.com 12 COM16155ER/COM16155RER User’s Manual
Table 5: CN6 SIM Pin Assignment
The figure below shows a picture of the external SIM card interface board.
CN7: GSM Headset Connector
The COM16155 Headset connector is used to connect a headset to the GSM module for voice operation. The pin-out of the
external connector CN5 is shown below.
Table 6: CN7 GSM Headset Pin Assignment
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