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Internal Power Circuits Block Diagram
SIM Card Requirements
The gateway has an integrated (U)SIM interface compatible with the ISO7816 IC card standard. The
3GPP standard defines three operational voltages for the supply voltage of the SIM card: 1.8V, 3V and
5V. The gateway supports two voltages: 1.8V and 3V. The 5V-only SIM cards are rarely used and are not
supported by the gateway.
General requirements:
Changing of SIM cards while in operating mode, or hot-swapping, is not supported.
Detection of the SIM card removal can take up to 30 seconds.
The gateway will not be able to communicate with the SIM card after re-insertion. As a result, the
gateway needs to be reset after re-insertion of the SIM.
Learn how to install a SIM
Revision: 1.00
card.
Copyright 2015 U.S. Robotics Corporation
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