@incollection{Behan17, author = {Ladislav Behan and Lukas Orcik and Filip Rezac and Ivan Baronak and Jerry Chun Wei Lin}, title = {Prepaid Voice Services Based on OpenBTS Platform}, booktitle = {Proceedings of the 3rd Czech-China Scientific Conference 2017}, publisher = {IntechOpen}, address = {Rijeka}, year = {2017}, editor = {Jaromir Gottvald and Petr Praus}, chapter = {2}, doi = {10.5772/intechopen.71099}, url = {https://doi.org/10.5772/intechopen.71099} }