@book{1182,
  author = {Tadeus Uhl},
  title = {Voice over IP (VoIP) Technology},
  year = {2018},
  edition = {1th},
  pages = {181},
  month = {February 2018},
  publisher = {Shaker Verlag GmbH},
  address = {Aachen/Germany},
  isbn = {3844057854},
}