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# [White-Rabbit](White-Rabbit) -\> Detailed information
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# Description
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White Rabbit (WR) is a solution to the generic problem of transferring
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data in a fast, deterministic and safe manner. Although its initial
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scope is mainly targeted at timing systems for experimental physics
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facilities, care has been taken to come up with a solution which is as
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generic as possible. The aim is to be able to synchronize ~1000 nodes
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with sub-ns accuracy over fiber and copper lengths of up to 10 km. The
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main technologies used are physical layer syntonization (clock recovery)
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and PTP (IEEE 1588). Compliance with established standards such as
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Ethernet and PTP is a key goal of the project.
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This OHR project is both the home of the hardware design for the White
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Rabbit switch (fully open hardware licensed under the [CERN Open
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Hardware Licence](https://www.ohwr.org/project/cernohl/wiki)) and an
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umbrella for general WR-related documents and discussion. In particular,
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the [publications](WRpublications) page contains key working documents
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such as the White Rabbit specification as well as publications,
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presentations and other useful material. [Several potential
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users](WRUsers) have expressed interest in WR, and some [commercial
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companies](WRCompanies) are collaborating in design tasks and will
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commercialize the results.
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The WR switch software is dealt with in a [separate
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subproject](https://www.ohwr.org/project/wr-switch-sw).
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Seven Solutions, one of the commercial companies involved, has prepared
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a nice [web page](http://www.sevensols.com/whiterabbitsolution/) about
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WR and other associated
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developments.
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![](/uploads/3803df0fdd038885c99abf44a22f219d/wr_switch.png)
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-----
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## Contacts
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### Commercial producers of switches
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- [White Rabbit
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Solution](http://www.sevensols.com/whiterabbitsolution/) [Seven
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Solutions](http://www.sevensols.com/), Spain
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- [WRS-3/18](http://creotech.pl/pl/oferta/white-rabbit-WRS-3/18)
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[Creotech](http://creotech.pl/), Poland
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### General question about project
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- [Erik van der Bij](mailto:Erik.van.der.Bij@cern.ch) - CERN
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# Documentation
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- [White Rabbit related papers](WRpublications)
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- [Which SFP transceiver and fibre type to use for White Rabbit](SFP)
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- [White Rabbit Node Reference design](WRReferenceDesign)
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- [White Rabbit in
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Wikipedia](http://en.wikipedia.org/wikis/The_White_Rabbit_Project#cite_note-syntonization-4)
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