Nation-wide switching of intertoll trunks - Transmission considerations

@article{Wallman1958NationwideSO,
  title={Nation-wide switching of intertoll trunks - Transmission considerations},
  author={O. F. Wallman},
  journal={Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics},
  year={1958},
  volume={77},
  pages={223-230}
}
  • O. F. Wallman
  • Published 1958 in
    Transactions of the American Institute of…
The successful planning, installation, and operation of a nation-wide switching plan to interconnect more than 62 million telephones in the United States requires a high degree of teamwork between various groups of people. This involves the development, design, transmission, equipment, and building engineers to provide the system and the operating and… CONTINUE READING