In 2007 Bjørn Birkedal phoned me. That was not in itself unexpected since we spend a lot of time in his basement in Faxe, Denmark, developing a system for our employer “Powerline”. Powerline was a small ISP that needed a system that could integrate with the National Number Portability facility “OCH”. All operators on the Read more about Dateltek – Telephone Number Portability[…]