Patent ID: 6044158
Filing Date: 2000-03-28
Classification: H04K,H04L

Abstract:
A method for communicating secured information over a telephone line with a communication device coupled between the telephone line and a telephone set, the communication device coupled to a cellular encryption apparatus, the method comprising the steps of:sensing a loop current on said telephone line;providing a visible indication that non-secure communication is taking place in response to the sensing step;notifying said cellular encryption apparatus to enter a secure communication mode in response to a go-secure signal;decoupling said telephone line directly from the telephone set in response to the notifying step;coupling said telephone line in series with said cellular encryption apparatus;providing loop current to said telephone line in response to the coupling step;receiving a notification from said cellular encryption apparatus that said cellular encryption apparatus is ready for secure information;providing an indication that secure communication is taking place in response to the step of receiving said notification; andcoupling the cellular encryption apparatus with the telephone set in response to the decoupling step when secure voice data is communicated,and when secure non-voice data is communicated, said cellular encryption apparatus providing said secure non-voice data to a clear data port, said telephone line remaining decoupled from said telephone set.