User guide

• Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting
work only under the same or similar license to this one.
David Rowe for his contribution to the 2
nd
Edition of the VoIP-4D Primer with the IP04 architecture and
the role of open hardware in developing regions (Appendix B).
This work was carried out with the aid of a grant from the Acacia Initiative of the International
Development Research Centre of Canada.
Canada’s International Development Research Centre (IDRC) is one of the world’s leading
institutions in the generation and application of new knowledge to meet the challenges of
international development. For more than 30 years, IDRC has worked in close
collaboration with researchers from the developing world in their search for the means to
build healthier, more equitable, and more prosperous societies.
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