OR leave REGEX field empty or set to ‘ *’ to allow SIM’s to connect to network without assigned numbers/keys.Compatible SIM Card Reader (What we used: ).SIM Cards (sysmoSIM-GR2) (!!! VENDOR (AT&T, VERIZON, ETC.) CARDS DO NOT WORK !!!).SSH enabled on the Pi (For ease of use, Terminal works fine too).Nuand BladeRF (We used the BladeRF x40, the smaller card offered by Nuand).Raspberry Pi (We used a 3rd Generation Model B Pi). ![]() Prerequisites To deploy the portable cell network using our instructions you’ll need the following: ![]() The Raspberry PI is instrumental to reach our goals of portability due to its size, low power usability, and cost over alternatives. This hardware is controlled by the Raspberry PI (small single-board computer) (external) using YateBTS (external) which is software that implements functions and protocols of both the radio access network and the core GSM network to allow cell phones to communicate using voice, text, and data. To broadcast the radio system, we are going to be using a Software Defined Radio (SDR) device called the BladeRF (external). The radio system that we are using for the cell phones to communicate with is the GSM protocol (Global System for Mobiles) more commonly used by cellular provider such as AT&T and T-Mobile. Having the ability to set up secure and reliable communications for civilians or law enforcement can save lives, facilitate responses, and provide confidence in decision making. ![]() In the event of an emergency, commodity cell networks can easily become severely congested and overwhelmed. The goal of this project is to create a private secure portable cell network utilizing basic technologies for mobile phones that can be easily deployable in any situation. Project Documentation Project By: Matthew May & Brendan Harlow for Champlain College SEC-440 Introduction This project is deployable on Raspberry Pi using BladeRF and allows for the creation and operation of a custom local GSM cell tower.
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