FAQ » History » Version 4
laforge, 02/19/2016 10:52 PM
add tetrapol faq
1 | 1 | laforge | [[PageOutline]] |
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2 | = OsmocomTETRA Frequently Asked Questions = |
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4 | == Can I use OsmocomTETRA to listen to police radio? == |
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6 | No, you cannot. We expect any decent police radio installation to use at least Tetra Air Encryption (TEA1/2/3/4) |
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7 | or end-to-end encryption. |
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9 | Also, if this is your interest in this project: Please simply go away, we don't want to talk to you. |
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11 | 4 | laforge | == What about TETRAPOL? == |
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13 | Despite the similarity in name, they have nothing in common on the technical side, neither on the physical layer nor the protocol stack. |
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15 | As such, OsmocomTETRA has no relation with or use case in the context of TETRAPOL. |
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17 | See [http://www.bakom.admin.ch/themen/technologie/01220/index.html?lang=en this TETRAPOL fact sheet] for details |
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19 | 1 | laforge | == What can I do using your software? == |
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21 | You can learn more about how TETRA works on its lowest level! |
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23 | == How can I actually receive TETRA RF signals? == |
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25 | You can use any radio that is suitable for your target frequency range. |
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27 | 2 | laforge | We have so far used the Ettus USRP and USRP2 radios with a variety of different daughter boards, as |
28 | well as the [wiki:Funcube_Dongle] Pro. |
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29 | 1 | laforge | |
30 | == Can your software actually play the voice signal? == |
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32 | 2 | laforge | Currently we have no support for that. However, a yet unreleased proof-of-concept version exists. |
33 | 1 | laforge | |
34 | == You are sending GSMTAP messages. Where do I get the TETRA wireshark dissector? == |
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36 | 3 | laforge | We have not written any TETRA wireshark dissector. Researchers in China have done this and |
37 | we have convinced them to release their code under GNU GPL, rather than replicating unnecessary work. |
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39 | This code has since been merged into the official wireshark source code repository, as released by |
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40 | wireshark.org. However, we are not sure if any release was made after it had been merged, so you are |
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41 | advised to use the latest svn repository from wireshark.org. |